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时间:2020-03-25
《氧化锰矿泥浸出液除杂净化和产品制备试验研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第30卷第5期矿冶工程V01.3O№52010年10月MININGANDMETALLURGICALENGINEERING0ctober2010氧化锰矿泥浸出液除杂净化和产品制备试验研究①郑文军,沈慧庭,郭克非(广西大学资源与冶金学院,广西南宁530004)摘要:选取硫铁矿、玉米秆和废糖蜜作为还原剂对广西某氧化锰矿泥进行还原浸出,在锰浸出率都达到95%以上的条件下,对3种浸出液采用部分水解针铁矿法除铁、硫化法除重金属,除杂净化后液用于制备硫酸锰或碳酸锰。结果表明,以硫铁矿为还原剂的锰浸出液铁离子较易除去,玉米秆次
2、之,废糖蜜较难,3种不同还原剂的浸出液除铁率分别为99.98%,99.91%、和99.48%;在相同净化条件下,3种不同还原剂的浸出液除重金属净化效果并无明显差异,均能达到很好的除杂效果;以硫铁矿为还原剂的锰净化液可制得合格的工业级硫酸锰产品,以玉米秆和废蜜糖为还原剂难以制得合格的硫酸锰产品。3种还原剂的锰净化液都可制成合格的碳酸锰产品,产品级别硫铁矿还原时优于玉米秆、废糖蜜,最终锰的回收率分别为88。37%、82.56%和81.71%。关键词:氧化锰矿泥;硫铁矿;玉米秆;废糖蜜;除杂净化;硫酸锰;碳酸锰中图分
3、类号:TFI11文献标识码:A文章编号:0253—6099(2010)05—0o9O一06ExperimentalStudyonImpurityRemovalandPurificationofLeachingLiquidofManganeseOxideSlimeandProductPreparationZHENGWen-jun,SHENHui—ting,GUOKe—fei(SchoolofResources&Metallurgy,GuangxiUniversity,Nanning530004,Guangxi,C
4、hina)Abstract:ReductionleachingforsomemanganeseoxideslimefromGuangxiwasconductedbyselectingpyrite,cornstalkandblackstrapmolassesasreductants.Undertheconditionsthattheleachingrateofmanaganesereachedabove95%,ironremovalbypaaiallyhydrolyticgeothiteprocessandhea
5、vymetalsremovalbysulphidizingprocesswereconductedforthroeleehingliquid,andtheliquidafterimpurityremovalandpurificationwasusedtopreparemanganesesulfateandmanganesecarbonate.Theresultsshowedthatironionsinmanganeseleachingliquidusingpyriteasreductantweroeasytor
6、emove,constalkwasthesecondandblackstrapmolasseswasdifficulttoremove.Theironremovalratioofleachingliquidofthreedifferentreducrnswas99.98%,99.91%and99.48%,respectively.Theleachingliquidofthreedifferentreduc—rantscanreachgoodefectsofimpurityremovalandthepurific
7、ationeffectsofremovingheavymetalshadnosignificantdifferenceunderthesamepurificationconditions.Qualifiedindustrialgradesulfatemanganeseproductscanbeproducedfrommanganesepurifiedliquidusingpyriteasreductant,butitisdifficulttoproducequalifiedsulfatemanganesepro
8、ductsusingcornstalkandblackstrapmolassesasreductant.Qualifiedmanganesecarbonatecanbepreparedusingmanganesepurificationliquidofthreereductants,andtheproductgradewasbetterthanthatofcomstalkandblac
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