Roast-reductive leach process for copper recovery

Details Roast-reductive leach process for copper recovery Roast-reductive leach process for copper recovery

C - Chemistry, Metallurgy

22

B

53/286

C22B 15/00 (2006.01) C22B 23/00 (2006.01)

Patent

CA 1091036

ABSTRACT OF THE DISCLOSURE: A sulfide containing copper and one or more of iron, nickel and cobalt, is dead-roasted at a temperature of 750°C or above, then subjected to a pressure leach under reducing conditions to produce elemental copper and an aqueous solution of the other metals.

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