黑钨精矿碱浸渣理化与环境特性及有价金属回收工艺（英文）-豆柴文库

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黑钨精矿碱浸渣理化与环境特性及有价金属回收工艺（英文）
Title:PhysicalandEnvironmentalCharacteristicsofAlkaliLeachingResiduefromBlackTungstenOreandProcessforRecoveryofValuableMetals
Abstract:
Theextractionofvaluablemetalsfromblacktungstenorehasgainedsignificantattentionduetoitsabundanceandhigheconomicvalue.However,theleachingprocessgeneratesalkalileachingresidue,whichrequiresproperhandlingduetoitsphysicalandenvironmentalcharacteristics.Thispaperreviewsthephysicalandenvironmentalcharacteristicsofalkalileachingresidueandexploresthepotentialfortherecoveryofvaluablemetalsthroughsuitableprocesses.
1.Introduction:
Theextractionofvaluablemetals,suchastungsten,fromblacktungstenoreinvolvesthealkalileachingprocess.Thisprocessutilizesalkalinesolutionstodissolvetungstenmineralspresentintheore.Althoughtheprocesseffectivelyextractsvaluablemetals,italsogeneratesasignificantamountofalkalileachingresidue,whichrequiresefficientmanagementduetoitsphysicalandenvironmentalcharacteristics.
2.PhysicalCharacteristics:
2.1ParticleSizeDistribution:Alkalileachingresiduetypicallyconsistsoffineparticleswithawiderangeofsizes.Theparticlesizedistributionaffectsthedisposalandreutilizationoftheresidue.
2.2ChemicalComposition:Thechemicalcompositionofalkalileachingresiduevariesdependingontheorecompositionandalkalileachingprocess.Ittypicallycontainsoxidesoftungsten,silicon,aluminum,andcalcium,alongwithsmallamountsofimpuritiessuchasiron,copper,andmanganese.
3.EnvironmentalCharacteristics:
3.1pHLevel:ThepHofalkalileachingresidueisgenerallyalkaline,whichmayposechallengesforitssafedisposalorreuse.Propermanagementisnecessarytopreventlandandwatercontamination.
3.2HeavyMetalContent:Traceamountsofheavymetals,suchascopper,iron,andmanganese,maybepresentintheresidue,whichrequirespropertreatmenttoavoidenvironmentalpollution.
4.ValorizationofAlkaliLeachingResidue:
4.1PhysicalSeparationTechniques:Variousphysicalseparationtechniques,suchasgravityseparation,magneticseparation,andsieving,canbeemployedtorecovervaluablemetalsfromalkalileachingresidu