Method for producing cobalt metal powder

Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes

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75103, 75119, 423 34, B22F 900

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active

043819370

ABSTRACT:
In a process for producing fine cobalt metal powder from scrap material containing brazing compositions, the scrap is digested with hydrochloric acid to form a cobalt chloride solution which the silver is removed by precipitation with a suitable alkali metal halide at a pH of about 7 to result in a cobalt amine chloride solution which is further processed to fine cobalt powder.

REFERENCES:
patent: 3549337 (1970-12-01), Palmer
patent: 3833351 (1974-09-01), Neskova et al.
patent: 4131454 (1978-12-01), Piret et al.
patent: 4233063 (1980-11-01), Ritsko et al.
patent: 4234333 (1980-11-01), Ghandehari et al.
patent: 4256704 (1981-03-01), Howard

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