%0 Journal Article
%T TheEffectsofOxidativePretreatmentofZinc-containingDustonContentsofIronandManganeseinAmmoniacalLeachingSolutionandProductionofZincOxide
%A 王为振
%A 陈启元
%A 胡慧萍
%A 谭力铭
%A 陈辉煌
%J 过程工程学报
%D 2013
%X Thezinc-containingdustwasoxidativelypretreatedwithcalciumhypochlorite,subsequentlyleachedwithammonia/ammoniumbicarbonatesolutiontoobtaintheammoniacalleachingsolution,andzincoxidewasproducedbyammoniadistillationoftheammoniacalleachingsolutionandsubsequentcalcination.Theelementsofironandmanganesecouldnotbedetectedinammoniacalleachingsolution,andtheextractionrateofzincwas98.2%inammoniacalleachingprocess.Thezincoxidecontentintheproductis99.5%(w),andthecontentsofironandmanganeseintheproductwere0.0028‰and0.00084‰(w),respectively.Theanalysesofthevalencestatesofironandmanganeseinthezinc-containingdustwithandwithoutpretreatmentwereperformedbychemicalanalysisandXPS,andthepossibleoxidationmechanismoftheoxidativepretreatmentofthedustwasdiscussed.ItisconcludedthatFe2+-oxideandMn2+-oxideinthedustwereoxidizedtoFe3+-oxideand/oritshydrateandMn4+-oxideand/oritshydratebycalciumhypochloriteduringtheoxidativepretreatmentprocess,respectively.
%K zinc-containingdust
%K oxidativepretreatment
%K ammoniacalleaching
%K zincoxide
%K calciumhypochlorite
%U http://www.jproeng.com/qikan/Cpaper/zhaiyao.asp?bsid=16917