Process for producing cobalt powder

Details Process for producing cobalt powder Process for producing cobalt powder

1979-05-14

1980-11-11

Ozaki, G.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75119, 423143, C22B 2304

Patent

active

042330637

ABSTRACT:
Cobalt is recovered from by-product streams from a basic process by heating the by-product streams containing ammonia for a sufficient period of time at a pH of about 8 to about 10 to produce an ammonia enriched vapor and an aqueous mixture comprising a solution substantially free of ammonia and another cobalt containing precipitate. The basic process is the type wherein cobalt ions in solution are complexed with ammonia in the presence of halide ions to form an ammine halide solution which is digested to form a cobalt containing precipitate. The precipitate is subsequently reduced to form a cobalt metal powder.

REFERENCES:
patent: 2826499 (1958-03-01), Schlecht et al.
patent: 2879137 (1959-03-01), Bare et al.
patent: 3928530 (1975-12-01), Bakker et al.
patent: 4093450 (1978-06-01), Doyle et al.
patent: 4108640 (1978-08-01), Wallace et al.

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