Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal
Patent
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.
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Kostol Carl O.
Thomassen Thomas
Zachariansen Hans
Falconbridge Limited
Stoll Robert L.
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