赤泥洗液合成4A沸石的研究

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1、中南大学硕士学位论文赤泥洗液合成4A沸石的研究姓名：李广战申请学位级别：硕士专业：化学工程指导教师：黄可龙;刘昌俊20051123硕士学位论文ABSTRACTThisthesisintroducesthestructure．usesanddevelopmentaltrendof4Azeolite．whichsubstitutesforphosphoriccleaningadditives．Itexploredthehydrothermalsyntheticmechanismof4Azeolite，bymeans

2、ofXRDandSEMinthehydrationprocess．Italsopresentesthedetailsoftheexperiment．inwhichredmudsolutioninthesinteringprocessiSusedasthemajormaterialsupplyingaluminumtosynthesize4Azeolite．A1lthecontrollingconditions，includingslurrying，crystallizationandmaturing，which

3、workonthespecificationsof4Azeolite，aretestedduringthesynthesis．Asshowedintheexperiment，Thecontrollingconditionsofthehydrothermalsynthesisoftheredmudsolutionbypurifiedandthesolubleglassis，thetemperatureofslurryingshouldbecontrolledbetween50and55℃．thetemperatu

4、reofcrystallizationshouldbecontrolledbetween70and80℃．thetemperatureofmaturingshouldbecontrolledatabout95℃．Thus．itCanproduce4AzeolitewhichiSeligible．TheindexnumberofCa2十>295mg／g，white兰_95％，whichcomestothefirstclassofthemerchandise．Thehi曲concentrationsynthesis

5、，thethree—componentscocurrentflowslurryingandsomenewtechnologyincreasetheproductivityofthesingleslot．nesolidcontentoftheoriginalartis90～100kg／m3．Aftertheartisimproved，thesolidcontentisincreasedto120～140kg／m3。whichiSincreasedabout30％．ItCanproduce4Azeoliteofex

6、cellentperformance，usedascleaningadditiveinthedetergentindustry,bycontrollingthehydrothermalsynthesisofpurifiedredmudsolutionandsodiumsilicate．A1203andNa20astheavailablecomponentsintheredmudsolutioncouldberecovered，butnolongerrecycledintothealuminaprocess，th

7、erebyoptimizedthesinteringprocessofaluminaproduction．Thistextputforwardmanypracticalandapplicablemeasuresoncontrollingtheproduction，includingoptimizingthehydrothermalsynthesis，makinguseofcocurrentflowslurryingandrecyclingfeedingcrystallizedmotherliquid，toens

8、uretheproductspecification，increasethebatchproductivity,lowthecostandeconomizethewaterresource．Approvedbytheindustrializedtest，thetechnology硕士学位论文ABSTRACTsupposedisreasonableandpractical,whichpr