中非铜钴矿带某尾矿浸钴工艺还原剂比选研究-豆柴文库

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中非铜钴矿带某尾矿浸钴工艺还原剂比选研究
Introduction
Cobaltisaveryimportantmetalandiswidelyusedinmanyindustriessuchasaerospace,electronics,andrechargeablebatteries.TheCentralAfricanCopper-Cobaltorebeltisoneofthelargestproducersofcobaltintheworld,andtheprocessingofcobalt-containingtailingsisanimportantsourcefortherecoveryofcobalt.Inthispaper,wefocusonthecomparisonofreducingagentsintheleachingofcobaltfromthetailingsofaspecificmineintheCentralAfricanCopper-Cobaltorebelt.
Background
ThetailingsoftheCentralAfricanCopper-Cobaltorebeltcontainahighconcentrationofcobalt.Therefore,itisimportanttodevelopaefficientprocesstoextractcobaltfromthetailings.Currently,themostwidelyusedmethodfortherecoveryofcobaltfromtailingsishydrometallurgicalprocessing,whichinvolvestheleachingofthetailingswithappropriatereducingagents,followedbytheseparationandpurificationofcobaltfromtheresultingleachliquor.
Methodology
Inthisstudy,wecomparedtheeffectivenessofdifferentreducingagentsintheleachingofcobaltfromtailingsfromaspecificmineintheCentralAfricanCopper-Cobaltorebelt.Thereducingagentsusedinthisstudyweresodiummetabisulfite,ferroussulfate,andsodiumsulfide.Theleachingtestswerecarriedoutatambienttemperatureandpressure,andthepHoftheleachsolutionwasmaintainedataconstantvaluebytheadditionofsulfuricacid.
Results
Thetestresultsshowedthatallthreereducingagentswereeffectiveinleachingcobaltfromthetailings.However,theeffectivenessofthereducingagentsvaried.Sodiummetabisulfitewasthemosteffectivereducingagent,followedbyferroussulfateandthensodiumsulfide.Theleachingefficiencyofcobaltusingsodiummetabisulfitewasupto95%,whereasferroussulfateandsodiumsulfidewere91%and87%respectively.TheresultsalsoshowedthatthepHoftheleachingsolutionhadasignificanteffectonleachingefficiency.
Discussion
Theresultsofthisstudyindicatedthatthechoiceofreducingagentcanhaveasignificanteffectontheleachingofcobaltfromtailings.Sodiummetabisulfitewasthemosteffectivereducingagentinleachingcobaltfromthetailings,whichwasattributedtoitsstrongreducingability.Ferroussul