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Reclamation of cobalt and copper from copper converter slags
Deng, T.; Ling, Y. H.
Conference Name5th International Symposium on Hydrometallurgy in honor of Ian M Ritchie
Conference DateAUG 24-27, 2003
PublisherMineralogical Soc Amer
AbstractClean processing of copper converter slags for reclaiming cobalt and copper could be a challenge. An innovative and environmentally benign approach for recovering metal values from such a slag was developed in the present work. Curing the slag with sulfuric acid, without re-smelting or roasting as currently practiced in the industry, made it amenable to leaching, and more than 95% of the cobalt and up to 90% of the copper was extracted, together with iron, by water leaching, leaving silica behind in a residue. Copper in the leach liquor was recovered by cementation with iron, and the dissolved iron crystallized as ferrous sulfate monohydrate. Cobalt in the pregnant solution rich in iron was recovered by either cementation or sulfide precipitation. Chemical and mineralogical characterization of the slag and its products were examined and compared to determine the nature of the changes occurring during curing and leaching. Operating variables were also investigated and optimized.
KeywordSulfuric-acid Recovery Nickel Values
Indexed ByISTP
Document Type会议论文
Recommended Citation
GB/T 7714
Deng, T.,Ling, Y. H.. Reclamation of cobalt and copper from copper converter slags[C]:Mineralogical Soc Amer,2003:1999-2012.
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