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基于钒、铬回收和钙循环时的含铬钒渣安全利用(英文) Safeutilizationofchromiumandvanadium-containingslagbasedonvanadiumandchromiumrecoveryandcalciumcycle Abstract: Slagisoneofthebyproductsofmetallurgicalprocesses.Intheproductionofferroalloys,chromiumandvanadium-containingslagisoftengeneratedwiththehighcontentofheavymetalsandtoxicelements.Propertreatmentanddisposalofsuchslagarenecessarytoprotecttheenvironmentandhealth.Thispaperpresentsacomprehensivereviewofthesafeutilizationofchromiumandvanadium-containingslagbasedonvanadiumandchromiumrecoveryandcalciumcycle.First,thecompositionandpropertiesoftheslagareintroduced.Then,thecurrentmethodsofslagtreatmentanddisposalarediscussed,includinglandfill,reuseinconstruction,andutilizationasfertilizers.Itisshownthatthesemethodshavelimitationsandenvironmentalconcerns.Themostsustainablemethodistorecovervaluablemetalsfromtheslagandrecyclethemintotheprocess.Vanadiumandchromiumrecoverytechnologiesarepresented,includingthesaltroastingmethod,thesodaashroastingmethod,andthecalciumroastingmethod.Advantagesanddisadvantagesofeachmethodarediscussed.Finally,thecalciumcyclemethodisproposedasasafeandeffectivewayoftreatingchromiumandvanadium-containingslag.Thecalciumcyclecanimmobilizeheavymetalsandreducetheirtoxicity.Thecalciumcarbonateproducedintheprocesscanbeusedinvariousapplications,includingconstruction,agriculture,andindustry.Itisconcludedthatthesafeutilizationofchromiumandvanadium-containingslagrequiresacomprehensiveapproach.Therecoveryofvaluablemetalsandtheimmobilizationofheavymetalsareessentialcomponentsofsuchanapproach. Introduction: Metallurgicalprocessesproduceasignificantamountofbyproducts,includingslag.Slagisamoltenbyproductthatformsduringtheproductionofmetalsandalloys.Slagcancontainahighconcentrationofheavymetalsandtoxicelements,makingitanenvironmentalconcern.Chromiumandvanadium-containingslagareparticularlyproblematicduetotheirtoxicnature.Duetothehighconcentrationofvaluablemetalsintheslag,technologieshavebeendevelopedtorecoverthem.Theaimofthispaperistopresent