Recovery of cobalt and nickel from sulphidic material

Details Recovery of cobalt and nickel from sulphidic material Recovery of cobalt and nickel from sulphidic material

C - Chemistry, Metallurgy

22

B

53/304

C22B 23/00 (2006.01)

Patent

CA 1206339

ABSTRACT OF THE DISCLOSURE A process for recovering cobalt and nickel values from cobalt and nickel containing sulphidic material also containing iron includes roasting the sulphidic material to produce a calcine containing water soluble cobalt and nickel sulphate, and leaching the calcine in aqueous sulphate solu- tion under oxidizing conditions at an oxygen overpressure in the range of from about 50 kPa to about 1500 kPa and at a temperature in the range of from about 100 to about 180°C to produce an iron-containing residue and a cobalt and nickel containing solution. The residue is separated from the solution, and cobalt and nickel values are recovered from the solution.

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