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ID:36429062
大小:8.24 MB
页数:68页
时间:2019-05-10
《赤泥浸出萃取钪的工艺研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、太原理工大学硕士学位论文赤泥浸出萃取钪的工艺研究姓名:于永波申请学位级别:硕士专业:有色金属冶金指导教师:陈津;王克勤20090501 ÷'´ø*ùJ21.2mol/kgCÕP204-R-úû$ü¶´ð!'àáJO/Aý1:1XîP204,þ3îRïÃ-1J1÷X¶´´ÃJ3mol·LX5õ10min'ö92%']öJ3.7%']ü9312'Æ9bhåæC:II STUDYONTEC
2、HNOLOGYOFLEACHINGANDEXTRACTINGSCANDIUMFROMREDMUDABSTRACTRedMudisawastematerialwhichisformedduringaluminaproductionprocess.Alotofemissionanddumpsofitincreasesthecostofalumina'anditalsohasbroughttremendousenvironmentalproblemsandsecurityrisks.Asakindoftypicalrarera
3、re-earthelementwhichcontainedinredmud,90T95%ofscandiumisoccurrencedinbauxiteXphosphoriteandironperovskite.BecauseithassomeoutstandingcharacteristicssuchashighchemicalactivityXgoodelectricalconductivityXsoftfeaturessuchaseasytobecutandsoon,madeitawiderangeofapplic
4、ationsinessentialareassuchaselectro-opticlightXastronavigationXelectronicsindustryXnucleartechnologyXsuperconductivitytechnologyandsoon.Therefore'fornon-ferrousmetallurgyofthecomprehensiveutilizationofsolidwaste'thestudyonrecoveringscandiumfromredmudhasaveryimpor
5、tantsignificance.TheobjectofthispaperisBayerredmud.ThechemicalcompositionofBayerredmudwasanalyzedcomprehensively,andusingthemethodofICP–MSXXRDXelectronprobeandsoon,thispaperstudiedthephysicalIII phaseofBayerredmudandthecontentofscandiuminthese.Studies
6、haveshowedthatduringtheprocessfromaluminitetoredmud,thecontentofscandiumincalciumnephelineXhydrationofgarnet,calcium-irongarnet,hydratedaluminumsilicateetcaluminumsilicatemineralphasewhicharenewphasesisverylow.Scandiumismainlydispersedintheisomorphismformofrutile
7、,ilmeniteandotherobjectsphase.Thronghdeterminingthecontentofscandiumwiththedistributionofredmudparticlesize,wefindthatthecontentofscandiumindifferentgrainofredmudisnotobviousregularityandspecificrichedphenomenon;Therefore,itisnotappropriatetoobtainredmudwhichcont
8、ainshighercontentofscandiumbythemethodofsieving.CombinedthebasisofstudyingphysicalandchemicalpropertiesofBayerredmud,throughorthogonalexperiment,whichstudiedth
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