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

1983-09-15

1986-06-10

Doll, John

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75101R, 75108, 75115, 75117, 75120, 75121, 423 36, 423 45, 423 52, 423104, 423106, 423109, 423141, 423146, 423150, 204108, C22B 2300

Patent

active

045941025

ABSTRACT:
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 solution 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.degree. to about 180.degree. 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.

REFERENCES:
patent: 2020313 (1935-11-01), Holstein et al.
patent: 2755172 (1956-07-01), McGauley et al.
patent: 3168375 (1965-02-01), Barut et al.
patent: 3493365 (1970-02-01), Pickering et al.
patent: 4338200 (1982-07-01), Zeijlstra
patent: 4440569 (1984-04-01), Weir et al.
patent: 4443253 (1984-04-01), Weir et al.

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