Recovery of copper from the copper slag and copper slag flotation tailings by oxidative leaching
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Department og Minerals Processing Mining and Metallurgy Institute
Technical Faculty Bor, University of Belgrade
University of Toronto, CFIE
Publication date: 2015-01-01
Corresponding author
Mile D Dimitrijevic   

Technical Faculty Bor, University of Belgrade, V.J. 12, P.O. Box 50, 19210 Bor, Serbia, 19210 Bor, Serbia
Physicochem. Probl. Miner. Process. 2015;51(1):73-82
Copper smelter slag and copper smelter slag flotation tailings were leached using sulphuric acid solutions, without or with the addition of either ferric sulphate or hydrogen peroxide. Copper extraction from the slag was typically found to be twice as high as that from the slag flotation tailings. Hydrogen peroxide was determined to be the best lixiviant. Thus, copper and iron extractions were 63.4% and 48.6%, respectively, when leaching the slag with 3 M H2O2, after 120 minutes of reaction at room temperature. Copper dissolution was generally found to be the dominant process within the first 60 minutes of reaction, whereas iron dissolution dominated afterwards.
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