Separation of nickel from copper in autoclave

Details Separation of nickel from copper in autoclave Separation of nickel from copper in autoclave

1986-04-24

1989-05-09

Stoll, Robert L.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 34, 423 40, 423 43, 423 46, 423141, 423150, 75 2, 75101R, 75108, 75109, 75112, 75114, 75117, 75118R, C01G 305, C01G 5311

Patent

active

048288098

ABSTRACT:
Nickel is separated from copper contained in predominantly nickel- and copper-bearing sulphidic matte and alloys by chlorine leaching in an autoclave at over-atmospheric pressure. The leaching is conducted in an acidic solution at a redox potential range which favors the dissolution of nickel over copper. The obtained leach solution is purified in a cementation step carried out at atmospheric or over-atmospheric pressure by adding more sulphidic matte or alloy particles. The separated purified solution is treated for nickel recovery. Any cobalt present in the sulphidic matte or alloy reports with the nickel. Copper is recovered from the separated residue, which will also retain precious metals, if present.

REFERENCES:
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patent: 4337128 (1982-06-01), Haakonsen et al.
patent: 4468302 (1984-08-01), Parker et al.

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