Recovery of Cobalt from Copper Converter Slag by a Selective Reduction-Roasting Process

Wei Jiao Yang; Cheng Yan Wang; Bao Zhong Ma; Zhong Wang; Yong Qiang Chen; Fei Yin

doi:10.4028/www.scientific.net/AMR.550-553.2186

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 550-553Recovery of Cobalt from Copper Converter Slag by a...

Recovery of Cobalt from Copper Converter Slag by a Selective Reduction-Roasting Process

Abstract:

An industrial converter slag was treated by a selective reduction-roasting process to recovery cobalt and copper in this study. To maximizing the recovery of cobalt and copper, the major process parameters such as reducing agent, curing agent and roasting temperature were investigated. Under the determined conditions, 95% cobalt and 96% copper can be recovered. According to the mineralogical analysis, it is found that cobalt in the converter slag mainly distributes in the iron-bearing minerals, which migrates with iron during the reduction-roasting process. After the reduction-roasting, most cobalt distributes in the metallic iron in the form of Co-Fe alloy.