邹家山铀矿石浸出过程中铀的相态变化及稀土浸出特征分析

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1、东华理工大学硕士学位论文关键词：钛铀矿，铀相态，稀土元素，顺序提取，邹家山铀矿II万方数据Abstract东华理工大学研究生毕业论文英文摘要首页用纸THESIS:ThechangesofUranium’sphaseandCharacteristicsanalysisofREEfromZoujiashanUraniumore-depositintheprocessofacidleachingexperimentsSPECIALIZATION:HydrologyandWaterResourcesPOSTGRADUATE:WangLiME

2、NTOR:Zhangweimin(profersor)Hubaoqun(profersor)AbstractAlargenumberofBranneriteswerefoundinthedeepofZoujiashanuraniumore-depositwiththeincreasingofminingdepthandresearchingdegree.Branneritebelongstorefractoryuraniumoreandleadstothewasteofuraniumresources,thepollutionoft

3、heenvironmentandseriouslyaffectthequalityoftheproductofuranium.ThereforetogenesisthephasebehaviorofuraniuminuraniumorewhichrichinBranneritehasimportanteconomic,environmental,andoredepositgenesissignificance.Thepaperisaboutimmersiontestsoftherepresentativesampleofbonanz

4、ainZoujiashanuraniumore-deposit.Leachingagentrespectivelyweredistilledwater,sulfuricacidsolution,acidandoxidants.Uraniumcontentinleachingliquidweremeasuredintheprocessofexperiment.ThentheChemicalandmineralcomposition,themacroelementandthemicroelementwhichinoriginalores

5、amplesandresiduesamplesweremeasuredbyusingElectronicprobeandICP-MS.Theconclusionisasfollows：(1)ThemainuraniumformsarePitchblende,BranneritandCoffiniteinZoujiashanuraniumore-deposit.TheotheristheIsomorphismthatcontainsEnaliteandThorite,andsoon.(2)Theleachingrateofuraniu

6、mwasincreasedwiththeincreaseingofthesulfuricacidconcentrationandamountofoxidantintheparallelexperiments.Thelargestleachingrateis98.26%undertheconditionsof30g/Lofsulfuricacidand10mlhydrogenperoxide.(3)Theresultsofsequentiallyextractingexperimentareasfollows:Theleachingr

7、ateofuraniumis0.51%indistilledwater.Thefourcumulativeleachingratesrespectivelywere24.64%,55.37%,90.76%and93.94%whichwererespectivelyimmersedin40g/Lofsulfuricacid.Thecumulativeleachingrateincreaseto97.11%byusing20mlhydrogenperoxide.(4)Thedissolveduraniumaccountsfor0.51%

8、inthestageofusingingdistilledwater,andthispartofuraniumformmainlyisactivehexavalenturaniumsuchasPitchblende.Thedissol