氧化锰矿泥浸出液除杂净化和产品制备试验研究.pdf

《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