<?xml version="1.0" encoding="us-ascii"?>
<!-- DFS ActiveDisclosure(SM) XBRL Schema Document - http://www.dfsco.com/financial-services/ -->
<!-- Creation Date      : 2019-02-25T22:51:58.1547862+00:00 -->
<!-- Version            : 3.3.6989.14284 -->
<!-- Package ID         : ceb0f8f8a0c9478b99f4045143fe214f -->
<!-- Copyright (c) 2019 Donnelley Financial, LLC. All Rights Reserved. -->
<schema xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:us-types="http://fasb.org/us-types/2018-01-31" xmlns:stpr="http://xbrl.sec.gov/stpr/2018-01-31" xmlns:srt-types="http://fasb.org/srt-types/2018-01-31" xmlns:naics="http://xbrl.sec.gov/naics/2017-01-31" xmlns:invest="http://xbrl.sec.gov/invest/2013-01-31" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:srt="http://fasb.org/srt/2018-01-31" xmlns:us-gaap="http://fasb.org/us-gaap/2018-01-31" xmlns:dei="http://xbrl.sec.gov/dei/2018-01-31" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:country="http://xbrl.sec.gov/country/2017-01-31" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:currency="http://xbrl.sec.gov/currency/2017-01-31" xmlns:lxu="http://www.lsbindustries.com/20181231" xmlns:exch="http://xbrl.sec.gov/exch/2018-01-31" xmlns:sic="http://xbrl.sec.gov/sic/2011-01-31" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.lsbindustries.com/20181231" xmlns="http://www.w3.org/2001/XMLSchema">
  <import schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/instance" />
  <import schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/linkbase" />
  <import schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" namespace="http://xbrl.org/2005/xbrldt" />
  <import schemaLocation="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd" namespace="http://xbrl.sec.gov/dei/2018-01-31" />
  <import schemaLocation="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd" namespace="http://fasb.org/us-gaap/2018-01-31" />
  <import schemaLocation="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd" namespace="http://fasb.org/srt/2018-01-31" />
  <import schemaLocation="http://xbrl.fasb.org/us-gaap/2018/elts/us-types-2018-01-31.xsd" namespace="http://fasb.org/us-types/2018-01-31" />
  <import schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" namespace="http://www.xbrl.org/dtr/type/numeric" />
  <import schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" namespace="http://www.xbrl.org/dtr/type/non-numeric" />
  <import schemaLocation="http://xbrl.fasb.org/srt/2018/elts/srt-types-2018-01-31.xsd" namespace="http://fasb.org/srt-types/2018-01-31" />
  <import schemaLocation="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd" namespace="http://xbrl.sec.gov/country/2017-01-31" />
  <import schemaLocation="https://xbrl.sec.gov/currency/2017/currency-2017-01-31.xsd" namespace="http://xbrl.sec.gov/currency/2017-01-31" />
  <import schemaLocation="https://xbrl.sec.gov/exch/2018/exch-2018-01-31.xsd" namespace="http://xbrl.sec.gov/exch/2018-01-31" />
  <import schemaLocation="https://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd" namespace="http://xbrl.sec.gov/invest/2013-01-31" />
  <import schemaLocation="https://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd" namespace="http://xbrl.sec.gov/naics/2017-01-31" />
  <import schemaLocation="https://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" namespace="http://xbrl.sec.gov/sic/2011-01-31" />
  <import schemaLocation="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd" namespace="http://xbrl.sec.gov/stpr/2018-01-31" />
  <annotation>
    <appinfo>
      <link:roleType id="TemplateLink" roleURI="http://www.lsbindustries.com/20181231/role/TemplateLink" xmlns:link="http://www.xbrl.org/2003/linkbase">
        <link:definition>00000 - Document - Template Link</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="lxu-20181231_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:title="Calculation Links, all" xlink:type="simple" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="lxu-20181231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:title="Definition Links, all" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="lxu-20181231_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:title="Label Links, all" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="lxu-20181231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:title="Presentation Links, all" xlink:type="simple" />
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DocumentDocumentAndEntityInformation" id="Role_DocumentDocumentAndEntityInformation">
        <link:definition>100000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/StatementConsolidatedBalanceSheets" id="Role_StatementConsolidatedBalanceSheets">
        <link:definition>100010 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/StatementConsolidatedBalanceSheetsParenthetical" id="Role_StatementConsolidatedBalanceSheetsParenthetical">
        <link:definition>100020 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/StatementConsolidatedStatementsOfOperations" id="Role_StatementConsolidatedStatementsOfOperations">
        <link:definition>100030 - Statement - Consolidated Statements of Operations</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/StatementConsolidatedStatementsOfStockholdersEquity" id="Role_StatementConsolidatedStatementsOfStockholdersEquity">
        <link:definition>100040 - Statement - Consolidated Statements of Stockholders&apos; Equity</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/StatementConsolidatedStatementsOfCashFlows" id="Role_StatementConsolidatedStatementsOfCashFlows">
        <link:definition>100050 - Statement - Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsParenthetical" id="Role_StatementConsolidatedStatementsOfCashFlowsParenthetical">
        <link:definition>100060 - Statement - Consolidated Statements of Cash Flows (Parenthetical)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPolicies" id="Role_DisclosureSummaryOfSignificantAccountingPolicies">
        <link:definition>100070 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureAdoptionOfASC606" id="Role_DisclosureAdoptionOfASC606">
        <link:definition>100080 - Disclosure - Adoption of ASC 606</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureIncomeLossPerCommonShare" id="Role_DisclosureIncomeLossPerCommonShare">
        <link:definition>100090 - Disclosure - Income (loss) per Common Share</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosurePropertyPlantAndEquipment" id="Role_DisclosurePropertyPlantAndEquipment">
        <link:definition>100100 - Disclosure - Property, Plant and Equipment</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureCurrentAndNoncurrentAccruedAndOtherLiabilities" id="Role_DisclosureCurrentAndNoncurrentAccruedAndOtherLiabilities">
        <link:definition>100110 - Disclosure - Current and Noncurrent Accrued and Other Liabilities</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureAssetRetirementObligations" id="Role_DisclosureAssetRetirementObligations">
        <link:definition>100120 - Disclosure - Asset Retirement Obligations</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureLongTermDebt" id="Role_DisclosureLongTermDebt">
        <link:definition>100130 - Disclosure - Long-Term Debt</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureIncomeTaxes" id="Role_DisclosureIncomeTaxes">
        <link:definition>100140 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureCommitmentsAndContingencies" id="Role_DisclosureCommitmentsAndContingencies">
        <link:definition>100150 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureDerivativesHedgesAndFinancialInstruments" id="Role_DisclosureDerivativesHedgesAndFinancialInstruments">
        <link:definition>100160 - Disclosure - Derivatives Hedges and Financial Instruments</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureSecuritiesFinancingIncludingRedeemablePreferredStocks" id="Role_DisclosureSecuritiesFinancingIncludingRedeemablePreferredStocks">
        <link:definition>100170 - Disclosure - Securities Financing Including Redeemable Preferred Stocks</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureStockholdersEquity" id="Role_DisclosureStockholdersEquity">
        <link:definition>100180 - Disclosure - Stockholders&apos; Equity</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureNonRedeemablePreferredStock" id="Role_DisclosureNonRedeemablePreferredStock">
        <link:definition>100190 - Disclosure - Non-Redeemable Preferred Stock</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureExecutiveBenefitAgreementEmployeeSavingsPlansAndCollectiveBargainingAgreements" id="Role_DisclosureExecutiveBenefitAgreementEmployeeSavingsPlansAndCollectiveBargainingAgreements">
        <link:definition>100200 - Disclosure - Executive Benefit Agreement, Employee Savings Plans and Collective Bargaining Agreements</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureRelatedPartyTransactions" id="Role_DisclosureRelatedPartyTransactions">
        <link:definition>100210 - Disclosure - Related Party Transactions</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureSupplementalCashFlowInformation" id="Role_DisclosureSupplementalCashFlowInformation">
        <link:definition>100220 - Disclosure - Supplemental Cash Flow Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureDiscontinuedOperations" id="Role_DisclosureDiscontinuedOperations">
        <link:definition>100230 - Disclosure - Discontinued Operations</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureQuarterlyFinancialData" id="Role_DisclosureQuarterlyFinancialData">
        <link:definition>100240 - Disclosure - Quarterly Financial Data</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureValuationAndQualifyingAccounts" id="Role_DisclosureValuationAndQualifyingAccounts">
        <link:definition>100250 - Disclosure - Valuation and Qualifying Accounts</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies" id="Role_DisclosureSummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>100260 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureAdoptionOfASC606Tables" id="Role_DisclosureAdoptionOfASC606Tables">
        <link:definition>100270 - Disclosure - Adoption of ASC 606 (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureIncomeLossPerCommonShareTables" id="Role_DisclosureIncomeLossPerCommonShareTables">
        <link:definition>100280 - Disclosure - Income (loss) per Common Share (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosurePropertyPlantAndEquipmentTables" id="Role_DisclosurePropertyPlantAndEquipmentTables">
        <link:definition>100290 - Disclosure - Property, Plant and Equipment (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureCurrentAndNoncurrentAccruedAndOtherLiabilitiesTables" id="Role_DisclosureCurrentAndNoncurrentAccruedAndOtherLiabilitiesTables">
        <link:definition>100300 - Disclosure - Current and Noncurrent Accrued and Other Liabilities (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureLongTermDebtTables" id="Role_DisclosureLongTermDebtTables">
        <link:definition>100310 - Disclosure - Long-Term Debt (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureIncomeTaxesTables" id="Role_DisclosureIncomeTaxesTables">
        <link:definition>100320 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureCommitmentsAndContingenciesTables" id="Role_DisclosureCommitmentsAndContingenciesTables">
        <link:definition>100330 - Disclosure - Commitments and Contingencies (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureDerivativesHedgesAndFinancialInstrumentsTables" id="Role_DisclosureDerivativesHedgesAndFinancialInstrumentsTables">
        <link:definition>100340 - Disclosure - Derivatives Hedges and Financial Instruments (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureSecuritiesFinancingIncludingRedeemablePreferredStocksTable" id="Role_DisclosureSecuritiesFinancingIncludingRedeemablePreferredStocksTable">
        <link:definition>100350 - Disclosure - Securities Financing Including Redeemable Preferred Stocks (Table)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureStockholdersEquityTables" id="Role_DisclosureStockholdersEquityTables">
        <link:definition>100360 - Disclosure - Stockholders&apos; Equity (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureExecutiveBenefitAgreementEmployeeSavingsPlansAndCollectiveBargainingAgreementsTables" id="Role_DisclosureExecutiveBenefitAgreementEmployeeSavingsPlansAndCollectiveBargainingAgreementsTables">
        <link:definition>100370 - Disclosure - Executive Benefit Agreement, Employee Savings Plans and Collective Bargaining Agreements (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureSupplementalCashFlowInformationTables" id="Role_DisclosureSupplementalCashFlowInformationTables">
        <link:definition>100380 - Disclosure - Supplemental Cash Flow Information (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureDiscontinuedOperationsTables" id="Role_DisclosureDiscontinuedOperationsTables">
        <link:definition>100390 - Disclosure - Discontinued Operations (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureQuarterlyFinancialDataTables" id="Role_DisclosureQuarterlyFinancialDataTables">
        <link:definition>100400 - Disclosure - Quarterly Financial Data (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationDetail" id="Role_DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationDetail">
        <link:definition>100410 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureAdoptionOfASC606SummaryOfImpactOfAdoptionOfAccountingStandardsDetail" id="Role_DisclosureAdoptionOfASC606SummaryOfImpactOfAdoptionOfAccountingStandardsDetail">
        <link:definition>100420 - Disclosure - Adoption of ASC 606 - Summary of Impact of Adoption of Accounting Standards (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureAdoptionOfASC606SummaryOfNetSalesDisaggregatedByPrincipalMarketsDetail" id="Role_DisclosureAdoptionOfASC606SummaryOfNetSalesDisaggregatedByPrincipalMarketsDetail">
        <link:definition>100430 - Disclosure - Adoption of ASC 606 - Summary of Net Sales Disaggregated by Principal Markets (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureAdoptionOfASC606AdditionalInformationDetail" id="Role_DisclosureAdoptionOfASC606AdditionalInformationDetail">
        <link:definition>100440 - Disclosure - Adoption of ASC 606 - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureIncomeLossPerCommonShareComputationOfBasicAndDilutedNetIncomeLossPerCommonShareDetail" id="Role_DisclosureIncomeLossPerCommonShareComputationOfBasicAndDilutedNetIncomeLossPerCommonShareDetail">
        <link:definition>100450 - Disclosure - Income (loss) per Common Share - Computation of Basic and Diluted Net Income (loss) Per Common Share (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureIncomeLossPerCommonShareAntidilutiveSecuritiesExcludedFromComputationOfDilutedNetIncomeLossPerCommonShareDetail" id="Role_DisclosureIncomeLossPerCommonShareAntidilutiveSecuritiesExcludedFromComputationOfDilutedNetIncomeLossPerCommonShareDetail">
        <link:definition>100460 - Disclosure - Income (loss) per Common Share - Antidilutive Securities Excluded from Computation of Diluted Net Income (Loss) Per Common Share (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosurePropertyPlantAndEquipmentScheduleOfPropertyPlantAndEquipmentDetail" id="Role_DisclosurePropertyPlantAndEquipmentScheduleOfPropertyPlantAndEquipmentDetail">
        <link:definition>100470 - Disclosure - Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosurePropertyPlantAndEquipmentAdditionalInformationDetail" id="Role_DisclosurePropertyPlantAndEquipmentAdditionalInformationDetail">
        <link:definition>100480 - Disclosure - Property, Plant and Equipment - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureCurrentAndNoncurrentAccruedAndOtherLiabilitiesSummaryOfCurrentAndNoncurrentAccruedAndOtherLiabilitiesDetail" id="Role_DisclosureCurrentAndNoncurrentAccruedAndOtherLiabilitiesSummaryOfCurrentAndNoncurrentAccruedAndOtherLiabilitiesDetail">
        <link:definition>100490 - Disclosure - Current and Noncurrent Accrued and Other Liabilities - Summary of Current and Noncurrent Accrued and Other Liabilities (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureCurrentAndNoncurrentAccruedAndOtherLiabilitiesSummaryOfCurrentAndNoncurrentAccruedAndOtherLiabilitiesDetail2" id="Role_DisclosureCurrentAndNoncurrentAccruedAndOtherLiabilitiesSummaryOfCurrentAndNoncurrentAccruedAndOtherLiabilitiesDetail2">
        <link:definition>100500 - Disclosure - Current and Noncurrent Accrued and Other Liabilities - Summary of Current and Noncurrent Accrued and Other Liabilities (Detail)2</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureAssetRetirementObligationsAdditionalInformationDetail" id="Role_DisclosureAssetRetirementObligationsAdditionalInformationDetail">
        <link:definition>100510 - Disclosure - Asset Retirement Obligations - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureLongTermDebtScheduleOfRevolvingCreditFacilityAndLongTermDebtDetail" id="Role_DisclosureLongTermDebtScheduleOfRevolvingCreditFacilityAndLongTermDebtDetail">
        <link:definition>100520 - Disclosure - Long-Term Debt - Schedule of Revolving Credit Facility and Long-Term Debt (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureLongTermDebtScheduleOfRevolvingCreditFacilityAndLongTermDebtParentheticalDetail" id="Role_DisclosureLongTermDebtScheduleOfRevolvingCreditFacilityAndLongTermDebtParentheticalDetail">
        <link:definition>100530 - Disclosure - Long-Term Debt - Schedule of Revolving Credit Facility and Long-Term Debt (Parenthetical) (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureLongTermDebtWorkingCapitalRevolverLoanAndSeniorSecuredNotesAdditionalInformationDetail" id="Role_DisclosureLongTermDebtWorkingCapitalRevolverLoanAndSeniorSecuredNotesAdditionalInformationDetail">
        <link:definition>100540 - Disclosure - Long-Term Debt - Working Capital Revolver Loan and Senior Secured Notes - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureLongTermDebtScheduleOfMaturitiesOfLongTermDebtDetail" id="Role_DisclosureLongTermDebtScheduleOfMaturitiesOfLongTermDebtDetail">
        <link:definition>100550 - Disclosure - Long-Term Debt - Schedule of Maturities of Long-Term Debt (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureIncomeTaxesAdditionalInformationDetail" id="Role_DisclosureIncomeTaxesAdditionalInformationDetail">
        <link:definition>100560 - Disclosure - Income Taxes - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureIncomeTaxesProvisionBenefitForIncomeTaxesFromContinuingOperationsDetail" id="Role_DisclosureIncomeTaxesProvisionBenefitForIncomeTaxesFromContinuingOperationsDetail">
        <link:definition>100570 - Disclosure - Income Taxes - Provision (Benefit) for Income Taxes from Continuing Operations (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureIncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetail" id="Role_DisclosureIncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetail">
        <link:definition>100580 - Disclosure - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureIncomeTaxesLossFromContinuingOperationsProvisionBenefitForIncomeTaxesDetail" id="Role_DisclosureIncomeTaxesLossFromContinuingOperationsProvisionBenefitForIncomeTaxesDetail">
        <link:definition>100590 - Disclosure - Income Taxes - Loss from Continuing Operations Provision (Benefit) for Income Taxes (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureIncomeTaxesReconciliationOfBeginningAndEndingAmountOfUncertainTaxPositionsDetail" id="Role_DisclosureIncomeTaxesReconciliationOfBeginningAndEndingAmountOfUncertainTaxPositionsDetail">
        <link:definition>100600 - Disclosure - Income Taxes - Reconciliation of Beginning and Ending Amount of Uncertain Tax Positions (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureCommitmentsAndContingenciesScheduleFutureMinimumPaymentsOnLeasesDetail" id="Role_DisclosureCommitmentsAndContingenciesScheduleFutureMinimumPaymentsOnLeasesDetail">
        <link:definition>100610 - Disclosure - Commitments and Contingencies - Schedule Future Minimum Payments on Leases (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureCommitmentsAndContingenciesAdditionalInformationDetail" id="Role_DisclosureCommitmentsAndContingenciesAdditionalInformationDetail">
        <link:definition>100620 - Disclosure - Commitments and Contingencies - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureDerivativesHedgesAndFinancialInstrumentsAdditionalInformationDetail" id="Role_DisclosureDerivativesHedgesAndFinancialInstrumentsAdditionalInformationDetail">
        <link:definition>100630 - Disclosure - Derivatives Hedges and Financial Instruments - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureDerivativesHedgesAndFinancialInstrumentsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetail" id="Role_DisclosureDerivativesHedgesAndFinancialInstrumentsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetail">
        <link:definition>100640 - Disclosure -  Derivatives Hedges and Financial Instruments - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureDerivativesHedgesAndFinancialInstrumentsReconciliationOfBeginningAndEndingBalancesForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetail" id="Role_DisclosureDerivativesHedgesAndFinancialInstrumentsReconciliationOfBeginningAndEndingBalancesForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetail">
        <link:definition>100650 - Disclosure - Derivatives Hedges and Financial Instruments - Reconciliation of Beginning and Ending Balances for Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureDerivativesHedgesAndFinancialInstrumentsNetGainsLossesIncludedInOperatingResultsAndStatementOfOperationsClassificationsDetail" id="Role_DisclosureDerivativesHedgesAndFinancialInstrumentsNetGainsLossesIncludedInOperatingResultsAndStatementOfOperationsClassificationsDetail">
        <link:definition>100660 - Disclosure - Derivatives Hedges and Financial Instruments- Net Gains (Losses) Included in Operating Results and Statement of Operations Classifications (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureSecuritiesFinancingIncludingRedeemablePreferredStocksAdditionalInformationDetail" id="Role_DisclosureSecuritiesFinancingIncludingRedeemablePreferredStocksAdditionalInformationDetail">
        <link:definition>100670 - Disclosure - Securities Financing Including Redeemable Preferred Stocks - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureSecuritiesFinancingIncludingRedeemablePreferredStocksSummaryOfRedeemablePreferredStockDetail" id="Role_DisclosureSecuritiesFinancingIncludingRedeemablePreferredStocksSummaryOfRedeemablePreferredStockDetail">
        <link:definition>100680 - Disclosure - Securities Financing Including Redeemable Preferred Stocks - Summary of Redeemable Preferred Stock (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureStockholdersEquityAdditionalInformationDetail" id="Role_DisclosureStockholdersEquityAdditionalInformationDetail">
        <link:definition>100690 - Disclosure - Stockholders&apos; Equity - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureStockholdersEquityStockOptionActivitiesOfLongTermIncentiveAndOptionPlansDetail" id="Role_DisclosureStockholdersEquityStockOptionActivitiesOfLongTermIncentiveAndOptionPlansDetail">
        <link:definition>100700 - Disclosure - Stockholders&apos; Equity - Stock Option Activities of Long-Term Incentive and Option Plans (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureStockholdersEquitySummaryOfRestrictedStockActivityDetail" id="Role_DisclosureStockholdersEquitySummaryOfRestrictedStockActivityDetail">
        <link:definition>100710 - Disclosure - Stockholders&apos; Equity - Summary of Restricted Stock Activity (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureStockholdersEquityValuationAssumptionsOfGrantedStockOptionsDetail" id="Role_DisclosureStockholdersEquityValuationAssumptionsOfGrantedStockOptionsDetail">
        <link:definition>100720 - Disclosure - Stockholders&apos; Equity - Valuation Assumptions of Granted Stock Options (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureStockholdersEquityStockOptionsOutstandingAndExercisableDetail" id="Role_DisclosureStockholdersEquityStockOptionsOutstandingAndExercisableDetail">
        <link:definition>100730 - Disclosure - Stockholders&apos; Equity - Stock Options Outstanding and Exercisable (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureNonRedeemablePreferredStockAdditionalInformationDetail" id="Role_DisclosureNonRedeemablePreferredStockAdditionalInformationDetail">
        <link:definition>100740 - Disclosure - Non-Redeemable Preferred Stock - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureExecutiveBenefitAgreementEmployeeSavingsPlansAndCollectiveBargainingAgreementsAdditionalInformationDetail" id="Role_DisclosureExecutiveBenefitAgreementEmployeeSavingsPlansAndCollectiveBargainingAgreementsAdditionalInformationDetail">
        <link:definition>100750 - Disclosure - Executive Benefit Agreement, Employee Savings Plans and Collective Bargaining Agreements - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureExecutiveBenefitAgreementEmployeeSavingsPlansAndCollectiveBargainingAgreementsExecutiveBenefitAgreementsDetail" id="Role_DisclosureExecutiveBenefitAgreementEmployeeSavingsPlansAndCollectiveBargainingAgreementsExecutiveBenefitAgreementsDetail">
        <link:definition>100760 - Disclosure - Executive Benefit Agreement, Employee Savings Plans and Collective Bargaining Agreements - Executive Benefit Agreements (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureExecutiveBenefitAgreementEmployeeSavingsPlansAndCollectiveBargainingAgreementsExecutiveBenefitExpensesDetail" id="Role_DisclosureExecutiveBenefitAgreementEmployeeSavingsPlansAndCollectiveBargainingAgreementsExecutiveBenefitExpensesDetail">
        <link:definition>100770 - Disclosure - Executive Benefit Agreement, Employee Savings Plans and Collective Bargaining Agreements - Executive Benefit Expenses (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureExecutiveBenefitAgreementEmployeeSavingsPlansAndCollectiveBargainingAgreementsLifeInsurancePoliciesDetail" id="Role_DisclosureExecutiveBenefitAgreementEmployeeSavingsPlansAndCollectiveBargainingAgreementsLifeInsurancePoliciesDetail">
        <link:definition>100780 - Disclosure - Executive Benefit Agreement, Employee Savings Plans and Collective Bargaining Agreements - Life Insurance Policies (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureExecutiveBenefitAgreementEmployeeSavingsPlansAndCollectiveBargainingAgreementsLifeInsurancePremiumsDetail" id="Role_DisclosureExecutiveBenefitAgreementEmployeeSavingsPlansAndCollectiveBargainingAgreementsLifeInsurancePremiumsDetail">
        <link:definition>100790 - Disclosure - Executive Benefit Agreement, Employee Savings Plans and Collective Bargaining Agreements - Life Insurance Premiums (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureRelatedPartyTransactionsAdditionalInformationDetail" id="Role_DisclosureRelatedPartyTransactionsAdditionalInformationDetail">
        <link:definition>100800 - Disclosure - Related Party Transactions - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureSupplementalCashFlowInformationAdditionalInformationRelatingToCashFlowActivitiesDetail" id="Role_DisclosureSupplementalCashFlowInformationAdditionalInformationRelatingToCashFlowActivitiesDetail">
        <link:definition>100810 - Disclosure - Supplemental Cash Flow Information - Additional Information Relating to Cash Flow Activities (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureDiscontinuedOperationsAdditionalInformationDetail" id="Role_DisclosureDiscontinuedOperationsAdditionalInformationDetail">
        <link:definition>100820 - Disclosure - Discontinued Operations - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureDiscontinuedOperationsSummarizedResultsOfDiscontinuedOperationsDetail" id="Role_DisclosureDiscontinuedOperationsSummarizedResultsOfDiscontinuedOperationsDetail">
        <link:definition>100830 - Disclosure - Discontinued Operations - Summarized Results of Discontinued Operations (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureDiscontinuedOperationsScheduleOfCondensedCashFlowInformationDetail" id="Role_DisclosureDiscontinuedOperationsScheduleOfCondensedCashFlowInformationDetail">
        <link:definition>100840 - Disclosure - Discontinued Operations - Schedule of Condensed Cash Flow Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetail" id="Role_DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetail">
        <link:definition>100850 - Disclosure - Quarterly Financial Data - Schedule of Quarterly Financial Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationParentheticalDetail" id="Role_DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationParentheticalDetail">
        <link:definition>100860 - Disclosure - Quarterly Financial Data - Schedule of Quarterly Financial Information (Parenthetical) (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.lsbindustries.com/20181231/taxonomy/role/DisclosureScheduleIIValuationAndQualifyingAccountsDetail" id="Role_DisclosureScheduleIIValuationAndQualifyingAccountsDetail">
        <link:definition>100870 - Disclosure - Schedule II - Valuation and Qualifying Accounts (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </appinfo>
  </annotation>
  <element id="lxu_ContractWithCustomerLiabilityDeferredRevenue" name="ContractWithCustomerLiabilityDeferredRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_AccruedDeathAndOtherExecutiveBenefits" name="AccruedDeathAndOtherExecutiveBenefits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_AccruedAndOtherLiabilitiesNoncurrent" name="AccruedAndOtherLiabilitiesNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_AccruedAndOtherLiabilitiesCurrent" name="AccruedAndOtherLiabilitiesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_SuppliesPrepaidItemsAndOtherAbstract" name="SuppliesPrepaidItemsAndOtherAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_SuppliesPrepaidItemsAndOther" name="SuppliesPrepaidItemsAndOther" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_IntangiblesAndOtherAssetsNet" name="IntangiblesAndOtherAssetsNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_LessTreasuryStockAtCostAbstract" name="LessTreasuryStockAtCostAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_TemporaryEquityDividendRatePercentage" name="TemporaryEquityDividendRatePercentage" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_StockIssuedDuringPeriodSharesWarrantsExercised" name="StockIssuedDuringPeriodSharesWarrantsExercised" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_StockIssuedDuringPeriodValueWarrantsExercised" name="StockIssuedDuringPeriodValueWarrantsExercised" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_AmortizationOfIntangibleAndOtherAssets" name="AmortizationOfIntangibleAndOtherAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_GainLossOnSalesOfBusinessAndOtherPropertyAndEquipment" name="GainLossOnSalesOfBusinessAndOtherPropertyAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_PaymentsOfDebtRelatedCostsIncludingExtinguishmentAndModificationCosts" name="PaymentsOfDebtRelatedCostsIncludingExtinguishmentAndModificationCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_PaymentsOfPreferredStockModificationCosts" name="PaymentsOfPreferredStockModificationCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_NinePointSixTwoFivePercentageLongTermSeniorSecuredNotesDueIn2023Member" name="NinePointSixTwoFivePercentageLongTermSeniorSecuredNotesDueIn2023Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_SecuritiesFinancingIncludingRedeemablePreferredStocksTextBlock" name="SecuritiesFinancingIncludingRedeemablePreferredStocksTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_NonRedeemablePreferredStockTextBlock" name="NonRedeemablePreferredStockTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_ExecutiveBenefitAgreementsEmployeeSavingsPlansAndCollectiveBargainingAgreementsDisclosureTextBlock" name="ExecutiveBenefitAgreementsEmployeeSavingsPlansAndCollectiveBargainingAgreementsDisclosureTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_NatureOfBusinessPolicyTextBlock" name="NatureOfBusinessPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_AccruedInsuranceLiabilitiesPolicyTextBlock" name="AccruedInsuranceLiabilitiesPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_ExecutiveBenefitAgreementsPolicyTextBlock" name="ExecutiveBenefitAgreementsPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_RecognitionOfIncentiveTaxCreditsPolicyTextBlock" name="RecognitionOfIncentiveTaxCreditsPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_InsuranceRecoveriesRevenueRecognitionPolicyTextBlock" name="InsuranceRecoveriesRevenueRecognitionPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_RevenueRecognitionCostOfSalesPolicyTextBlock" name="RevenueRecognitionCostOfSalesPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_CapitalLeasesAndOperatingLeaseFutureMinimumPaymentsDueTableTextBlock" name="CapitalLeasesAndOperatingLeaseFutureMinimumPaymentsDueTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_ScheduleOfExecutiveBenefitAgreementsTableTextBlock" name="ScheduleOfExecutiveBenefitAgreementsTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_ScheduleOfExecutiveBenefitExpensesTableTextBlock" name="ScheduleOfExecutiveBenefitExpensesTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_ScheduleOfLifeInsurancePoliciesOwnedTableTextBlock" name="ScheduleOfLifeInsurancePoliciesOwnedTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_ScheduleOfLifeInsurancePremiumsCostTableTextBlock" name="ScheduleOfLifeInsurancePremiumsCostTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_ScheduleOfResultsOfOperatingInformationForDiscontinuedOperationsTableTextBlock" name="ScheduleOfResultsOfOperatingInformationForDiscontinuedOperationsTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_ScheduleOfCondensedCashFlowStatementDiscontinuedOperationsTableTextBlock" name="ScheduleOfCondensedCashFlowStatementDiscontinuedOperationsTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_NumberOfFacilitiesForManufactureAndDistributionOfProducts" name="NumberOfFacilitiesForManufactureAndDistributionOfProducts" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_SummaryOfSignificantAccountingPoliciesLineItems" name="SummaryOfSignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_SignificantAccountingPoliciesTable" name="SignificantAccountingPoliciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_CovestroMember" name="CovestroMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_CoffeyvilleResourcesNitrogenFertilizersLLCMember" name="CoffeyvilleResourcesNitrogenFertilizersLLCMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_KochFertilizerLLCMember" name="KochFertilizerLLCMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_NumberOfCustomersAccountedAsPercentageOfAccountsReceivable" name="NumberOfCustomersAccountedAsPercentageOfAccountsReceivable" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_PercentageOfNetReceivables" name="PercentageOfNetReceivables" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_InsuranceCoverageOfGeneralLiabilityAndAutoLiabilityRisks" name="InsuranceCoverageOfGeneralLiabilityAndAutoLiabilityRisks" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_InsurancePolicyCoveringPollutionLiability" name="InsurancePolicyCoveringPollutionLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_TaxBenefitRecognized" name="TaxBenefitRecognized" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_NoncashIncentiveTaxCreditReceivable" name="NoncashIncentiveTaxCreditReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_IncreaseOperatingLeaseRightOfUseAsset" name="IncreaseOperatingLeaseRightOfUseAsset" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_IncreaseOperatingLeaseObligationLiabilities" name="IncreaseOperatingLeaseObligationLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_ChemicalMember" name="ChemicalMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_AgriculturalProductsMember" name="AgriculturalProductsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_IndustrialAcidsAndOtherChemicalProductsMember" name="IndustrialAcidsAndOtherChemicalProductsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_MiningProductsMember" name="MiningProductsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_OtherProductsMember" name="OtherProductsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_WeightedAverageRevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod" name="WeightedAverageRevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_EarningsPerShareNumeratorAbstract" name="EarningsPerShareNumeratorAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_SeriesERedeemablePreferredStockMember" name="SeriesERedeemablePreferredStockMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_RestrictedStockAndRestrictedStockUnitsMember" name="RestrictedStockAndRestrictedStockUnitsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_PropertyPlantAndEquipmentUsefulLifeAndValuesAbstract" name="PropertyPlantAndEquipmentUsefulLifeAndValuesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_FurnitureFixturesAndStoreEquipmentMember" name="FurnitureFixturesAndStoreEquipmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_CapitalSparePartsMember" name="CapitalSparePartsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_PropertyPlantAndEquipmentCapitalizedInterestCostsAbstract" name="PropertyPlantAndEquipmentCapitalizedInterestCostsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_ChemicalProcessingPlantsAndPlantInfrastructureMember" name="ChemicalProcessingPlantsAndPlantInfrastructureMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_ProcessingPlantComponentsMember" name="ProcessingPlantComponentsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_VehiclesAndOtherRollingStockMember" name="VehiclesAndOtherRollingStockMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_SixPointZeroZeroWorkingCapitalRevolverLoanMember" name="SixPointZeroZeroWorkingCapitalRevolverLoanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_SeniorSecuredNotesDueTwoThousandAndTwentyThreeMember" name="SeniorSecuredNotesDueTwoThousandAndTwentyThreeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_SeniorSecuredNotesDueTwoThousandAndNineteenMember" name="SeniorSecuredNotesDueTwoThousandAndNineteenMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_FivePointSevenThreeSecuredPromissoryNoteDueTwoThousandAndNineteenMember" name="FivePointSevenThreeSecuredPromissoryNoteDueTwoThousandAndNineteenMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_FivePointTwoFivePercentSecuredPromissoryNoteDueTwoThousandAndTwentyOneMember" name="FivePointTwoFivePercentSecuredPromissoryNoteDueTwoThousandAndTwentyOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_SixPointSevenSixSecuredPromissoryNoteDueTwoThousandAndTwentyThreeMember" name="SixPointSevenSixSecuredPromissoryNoteDueTwoThousandAndTwentyThreeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_OtherLongTermDebtMember" name="OtherLongTermDebtMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_LineOfCreditFacilityAdditionalBorrowingCapacity" name="LineOfCreditFacilityAdditionalBorrowingCapacity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_MinimumExcessBorrowingAvailabilityAsPercentageOfMaximumRevolverCommitments" name="MinimumExcessBorrowingAvailabilityAsPercentageOfMaximumRevolverCommitments" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_LoanRequirementDescription" name="LoanRequirementDescription" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_FixedChargeCoverageRatio" name="FixedChargeCoverageRatio" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <element id="lxu_SpringingFinancialCovenantMember" name="SpringingFinancialCovenantMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_WorkingCapitalRevolverMember" name="WorkingCapitalRevolverMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_WellsFargoMember" name="WellsFargoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_EightPointFivePercentageSeniorSecuredNotesMember" name="EightPointFivePercentageSeniorSecuredNotesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_SeniorSecuredNotesMember" name="SeniorSecuredNotesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_OptionalRedemptionPriorToMay12022Member" name="OptionalRedemptionPriorToMay12022Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_ChangeOfControlMember" name="ChangeOfControlMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_ElDoradoChemicalCompanyMember" name="ElDoradoChemicalCompanyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_FivePointSixTwoSecuredPromissoryNoteDueTwoThousandAndTwentyThreeMember" name="FivePointSixTwoSecuredPromissoryNoteDueTwoThousandAndTwentyThreeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_DebtInstrumentMaturityYear" name="DebtInstrumentMaturityYear" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_DebtInstrumentIssuedPricePercentage" name="DebtInstrumentIssuedPricePercentage" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_DebtInstrumentMaturityTerm" name="DebtInstrumentMaturityTerm" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_DebtInstrumentMaturityPeriod" name="DebtInstrumentMaturityPeriod" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_TaxReformAdjustmentsToProvisionForIncomeTaxes" name="TaxReformAdjustmentsToProvisionForIncomeTaxes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_TaxCreditCarryForwardExpirationTerm" name="TaxCreditCarryForwardExpirationTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_TaxCreditCarryforwardBeginningExpirationYear" name="TaxCreditCarryforwardBeginningExpirationYear" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_OperatingLossCarryforwardsUtilizedCurrentPeriod" name="OperatingLossCarryforwardsUtilizedCurrentPeriod" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_FederalNetOperatingLossCarryforwardsExpirationYear" name="FederalNetOperatingLossCarryforwardsExpirationYear" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_StateNetOperatingLossCarryForwardsExpirationYear" name="StateNetOperatingLossCarryForwardsExpirationYear" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_OperatingLossCarryforwardsNotAbleToBeUtilizedBeforeExpiration" name="OperatingLossCarryforwardsNotAbleToBeUtilizedBeforeExpiration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_TaxCutsAndJobsActOf2017ReversalOfValuationAllowanceOnDeferredTaxAssets" name="TaxCutsAndJobsActOf2017ReversalOfValuationAllowanceOnDeferredTaxAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_DeferredTaxAssetInterestExpenseCarryforward" name="DeferredTaxAssetInterestExpenseCarryforward" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_DeferredTaxLiabilitiesPrepaidAndOtherInsuranceReserves" name="DeferredTaxLiabilitiesPrepaidAndOtherInsuranceReserves" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_CommitmentsAndContingenciesLineItems" name="CommitmentsAndContingenciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_CommitmentsAndContingenciesTable" name="CommitmentsAndContingenciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_PryorChemicalMember" name="PryorChemicalMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_UANSupplyAgreementMember" name="UANSupplyAgreementMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_AmmoniaSupplyAgreementMember" name="AmmoniaSupplyAgreementMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_GlobalIndustrialIncMember" name="GlobalIndustrialIncMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_LeidosConstructorsLimitedLiabilityCompanyMember" name="LeidosConstructorsLimitedLiabilityCompanyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_TermOfTerminationNotice" name="TermOfTerminationNotice" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_InitialTermOfAgreementExpirationDateMonthAndYear" name="InitialTermOfAgreementExpirationDateMonthAndYear" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_NoticeOfTermination" name="NoticeOfTermination" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_SupplyCommitmentDescription" name="SupplyCommitmentDescription" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_EstimatedShareOfAnnualOperatingCostOfPipelineMinimum" name="EstimatedShareOfAnnualOperatingCostOfPipelineMinimum" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_EstimatedShareOfAnnualOperatingCostOfPipelineMaximum" name="EstimatedShareOfAnnualOperatingCostOfPipelineMaximum" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_OperatingAgreementDescription" name="OperatingAgreementDescription" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_LiabilitiesRelatedToSuretiesMaximum" name="LiabilitiesRelatedToSuretiesMaximum" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_PaymentsUnderEmploymentAndSeveranceAgreements" name="PaymentsUnderEmploymentAndSeveranceAgreements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_PenaltyImposedToResolveOutstandingPermitViolations" name="PenaltyImposedToResolveOutstandingPermitViolations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_RelatedPartyCommitmentObligationPercentage" name="RelatedPartyCommitmentObligationPercentage" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_ProductLiabilityDeductiblePerClaim" name="ProductLiabilityDeductiblePerClaim" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_NumberOfSettlementAgreements" name="NumberOfSettlementAgreements" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <element id="lxu_LiabilityReserve" name="LiabilityReserve" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_ClaimAmountNotApprovedForPayment" name="ClaimAmountNotApprovedForPayment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_PreferredParticipationRightsInDividendsAndLiquidationCommonStockShareEquivalent" name="PreferredParticipationRightsInDividendsAndLiquidationCommonStockShareEquivalent" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_CarbonCreditFairValuePerUnit" name="CarbonCreditFairValuePerUnit" type="us-types:perUnitItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <element id="lxu_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsAbstract" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_DerivativeInstrumentsCarbonCreditsGainLossRecognizedInEarnings" name="DerivativeInstrumentsCarbonCreditsGainLossRecognizedInEarnings" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_OtherDerivativesMember" name="OtherDerivativesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_WarrantsToPurchaseMember" name="WarrantsToPurchaseMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_ClimateControlGroupMember" name="ClimateControlGroupMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_ThirdAnniversaryOfFinancingTransactionsMember" name="ThirdAnniversaryOfFinancingTransactionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_FourthAnniversaryOfFinancingTransactionsMember" name="FourthAnniversaryOfFinancingTransactionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_FifthAnniversaryOfFinancingTransactionsMember" name="FifthAnniversaryOfFinancingTransactionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_SeriesFRedeemablePreferredStocksMember" name="SeriesFRedeemablePreferredStocksMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_SeriesEAndSeriesFRedeemablePreferredStockMember" name="SeriesEAndSeriesFRedeemablePreferredStockMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_RightsAgreementExpirationPeriod" name="RightsAgreementExpirationPeriod" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_RenewedRightsAgreementExpirationPeriod" name="RenewedRightsAgreementExpirationPeriod" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_TemporaryEquityRedeemedDuringPeriodShares" name="TemporaryEquityRedeemedDuringPeriodShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_TemporaryEquityRedeemedDuringPeriodValue" name="TemporaryEquityRedeemedDuringPeriodValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_TemporaryEquityPreferredStockRedemptionTerms" name="TemporaryEquityPreferredStockRedemptionTerms" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_TemporaryEquityIncreaseDecreaseInDividendsPayablePercentage" name="TemporaryEquityIncreaseDecreaseInDividendsPayablePercentage" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_TemporaryEquityAdditionalIncreaseDecreaseInDividendsPayablePercentage" name="TemporaryEquityAdditionalIncreaseDecreaseInDividendsPayablePercentage" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_MinimumPercentageOfStockHoldingRequired" name="MinimumPercentageOfStockHoldingRequired" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <element id="lxu_CommonStockVotingRightsShares" name="CommonStockVotingRightsShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <element id="lxu_TemporaryEquityFeesAssociatedWithLetterAgreement" name="TemporaryEquityFeesAssociatedWithLetterAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_TemporaryEquityBifurcationOfEmbeddedDerivative" name="TemporaryEquityBifurcationOfEmbeddedDerivative" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_TemporaryEquityAccretionLiquidationPreference" name="TemporaryEquityAccretionLiquidationPreference" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_TemporaryEquityAccretionDiscountAndStockIssuanceCosts" name="TemporaryEquityAccretionDiscountAndStockIssuanceCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_StockholdersEquityLineItems" name="StockholdersEquityLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_StockholdersEquityTable" name="StockholdersEquityTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_WarrantExercisedPeriod" name="WarrantExercisedPeriod" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_CommonStockSharesIssuedUponExercisedOfWarrants" name="CommonStockSharesIssuedUponExercisedOfWarrants" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_WarrantsExercisedSharesSurrendered" name="WarrantsExercisedSharesSurrendered" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_LongTermIncentivePlanEffectiveDate" name="LongTermIncentivePlanEffectiveDate" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_TwoThousandSixteenPlanMember" name="TwoThousandSixteenPlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_TwoThousandEightPlanMember" name="TwoThousandEightPlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_TwoThousandEighteenRestrictedStockMember" name="TwoThousandEighteenRestrictedStockMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_TwoThousandSeventeenRestrictedStockMember" name="TwoThousandSeventeenRestrictedStockMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_TwoThousandSixteenRestrictedStockMember" name="TwoThousandSixteenRestrictedStockMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_PerformanceBasedRestrictedStockMember" name="PerformanceBasedRestrictedStockMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_ExercisePriceOfStockOptionAsPercentageOfFairMarketValue" name="ExercisePriceOfStockOptionAsPercentageOfFairMarketValue" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_MaximumTermOfStockOptions" name="MaximumTermOfStockOptions" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_MinimumExercisePriceOfStockOptionGrantDate" name="MinimumExercisePriceOfStockOptionGrantDate" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_RestrictedStockAndRestrictedStockUnitsRSUMember" name="RestrictedStockAndRestrictedStockUnitsRSUMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRightsPercentagePerYear" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRightsPercentagePerYear" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesSurrendered" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesSurrendered" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesSurrenderedByNumberOfEmployees" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesSurrenderedByNumberOfEmployees" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <element id="lxu_ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockVestedInPeriodFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockVestedInPeriodFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingWeightedAverageRemainingContractualTerms" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingWeightedAverageRemainingContractualTerms" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestedAtPercentageRateForFirstFiveYears" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestedAtPercentageRateForFirstFiveYears" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingFinalYear" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingFinalYear" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionOutstandingWeightedAverageRemainingVestingTerm" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionOutstandingWeightedAverageRemainingVestingTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_AllocatedShareBasedCompensationExpenseCostOfSales" name="AllocatedShareBasedCompensationExpenseCostOfSales" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_AllocatedShareBasedCompensationExpenseSellingGeneralAndAdministrative" name="AllocatedShareBasedCompensationExpenseSellingGeneralAndAdministrative" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_FirstRangeOfExercisePriceMember" name="FirstRangeOfExercisePriceMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_SecondRangeOfExercisePriceMember" name="SecondRangeOfExercisePriceMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_ThirdRangeOfExercisePriceMember" name="ThirdRangeOfExercisePriceMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_PreferredStockLineItems" name="PreferredStockLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_PreferredStockTable" name="PreferredStockTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_MinimumAmountOfLifeInsurancePoliciesToBeKeptByCompany" name="MinimumAmountOfLifeInsurancePoliciesToBeKeptByCompany" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_CollectiveBargainingAgreementsMember" name="CollectiveBargainingAgreementsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_UndiscountedDeathBenefits" name="UndiscountedDeathBenefits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_AccruedDeathBenefits" name="AccruedDeathBenefits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_ExecutiveBenefitCostsNet" name="ExecutiveBenefitCostsNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_LoansOnCashSurrenderValues" name="LoansOnCashSurrenderValues" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_CashSurrenderValueNet" name="CashSurrenderValueNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_CostOfLifeInsurancePremiumsIncludedInSellingGeneralAndAdministrativeExpenseGross" name="CostOfLifeInsurancePremiumsIncludedInSellingGeneralAndAdministrativeExpenseGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_CostOfLifeInsurancePremiumsIncludedInSellingGeneralAndAdministrativeExpenseNet" name="CostOfLifeInsurancePremiumsIncludedInSellingGeneralAndAdministrativeExpenseNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_UnionAgreementEarliestExpirationDate" name="UnionAgreementEarliestExpirationDate" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_UnionAgreementLatestExpirationDate" name="UnionAgreementLatestExpirationDate" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_RelatedPartyTransactionFee" name="RelatedPartyTransactionFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_DanielDGreenwellMember" name="DanielDGreenwellMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_AffiliateOfSecurityBenefitCorporationMember" name="AffiliateOfSecurityBenefitCorporationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_EmployeesOfSecurityBenefitCorporationAndAffiliatesMember" name="EmployeesOfSecurityBenefitCorporationAndAffiliatesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_BarryHGolsenMember" name="BarryHGolsenMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_TransitionAgreementMember" name="TransitionAgreementMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_TerminationOfDeathBenefitAgreementMember" name="TerminationOfDeathBenefitAgreementMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_IndustrialAcquisitionsLLCAndIndustrialProductsLLCMember" name="IndustrialAcquisitionsLLCAndIndustrialProductsLLCMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_StevenGolsenMember" name="StevenGolsenMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_RelatedPartyTransactionRetirementDate" name="RelatedPartyTransactionRetirementDate" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_RelatedPartyTransactionAgreementCommencementDate" name="RelatedPartyTransactionAgreementCommencementDate" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_RelatedPartyTransactionAnnualCashRetainerPayable" name="RelatedPartyTransactionAnnualCashRetainerPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_RelatedPartyTransactionAdditionalMonthlyAmountPayable" name="RelatedPartyTransactionAdditionalMonthlyAmountPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_TermOfAgreement" name="TermOfAgreement" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="lxu_NoncashIncentiveTaxCreditReceivableAssociatedWithPropertyPlantAndEquipment" name="NoncashIncentiveTaxCreditReceivableAssociatedWithPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_AccretionOfRedeemablePreferredStock" name="AccretionOfRedeemablePreferredStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_CashPaymentsForAbstract" name="CashPaymentsForAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_DisposalGroupIncludingDiscontinuedOperationSellingGeneralAndAdministrativeExpense" name="DisposalGroupIncludingDiscontinuedOperationSellingGeneralAndAdministrativeExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_DisposalGroupIncludingDiscontinuedOperationTransactionCosts" name="DisposalGroupIncludingDiscontinuedOperationTransactionCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_DisposalGroupIncludingDiscontinuedOperationOtherIncomeExpenseNet" name="DisposalGroupIncludingDiscontinuedOperationOtherIncomeExpenseNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_DisposalGroupIncludingDiscontinuedOperationsDeferredIncomeTaxExpenseBenefit" name="DisposalGroupIncludingDiscontinuedOperationsDeferredIncomeTaxExpenseBenefit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_DisposalGroupIncludingDiscontinuedOperationStockBasedCompensation" name="DisposalGroupIncludingDiscontinuedOperationStockBasedCompensation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_DiscontinuedOperationsPaymentsToAcquirePropertyPlantAndEquipment" name="DiscontinuedOperationsPaymentsToAcquirePropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_DisposalGroupIncludingDiscontinuedOperationSoftwareAndSoftwareDevelopmentCosts" name="DisposalGroupIncludingDiscontinuedOperationSoftwareAndSoftwareDevelopmentCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_VendorRecoverySettlement" name="VendorRecoverySettlement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="lxu_ScheduleOfQuarterlyFinancialDataLineItems" name="ScheduleOfQuarterlyFinancialDataLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_ScheduleOfQuarterlyFinancialDataTable" name="ScheduleOfQuarterlyFinancialDataTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_TurnaroundExpenseMember" name="TurnaroundExpenseMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_RecoveryOfPreciousMetalsMember" name="RecoveryOfPreciousMetalsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_IncomeFromDiscontinuedOperationsNetOfTaxesMember" name="IncomeFromDiscontinuedOperationsNetOfTaxesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="lxu_SeveranceBenefitsAndAcceleratedStockBasedCompensation" name="SeveranceBenefitsAndAcceleratedStockBasedCompensation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="lxu_SuppliesValuationReserveMember" name="SuppliesValuationReserveMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
</schema>
