Process for cobalt recovery from mixed sulfides

Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal

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423 37, 423144, 423150, C01G 5100, C01G 5311, C01G 312, C22B 300

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044016301

ABSTRACT:
The metal content of nickel-cobalt mixed sulfide slurries is recovered by atmospheric oxidation leaching, thereafter removing dissolved copper by metathesis with further mixed sulfide feed, treating the filtrate after liquid-solids separation with ammonia to selectively precipitate cobalt, separating the cobalt precipitate and working up the resulting filtrate to recover nickel.

REFERENCES:
patent: 2588265 (1952-03-01), McGauley
patent: 3616331 (1971-10-01), O'Neill et al.
patent: 3652265 (1972-03-01), Marschik et al.
patent: 3751558 (1972-01-01), Crnojevich et al.
patent: 4304644 (1981-02-01), Victorovich et al.
patent: 4312841 (1982-01-01), Tolley et al.
patent: 4323541 (1982-05-01), Saarinen et al.
Plasket, R. P., Recovery of Nickel and Copper from High Grade Matte at Impala Platinum by The Sherritt Process, AIME-TMS A74-102.
"Llanos, Z. R. Atmospheric Leaching of Matte at Port Nickel Refinery" Hydrometallurgy, Oct. 1973, p. 74.

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