Recovery of cobalt values by absorption from ammoniacal solution

Details Recovery of cobalt values by absorption from ammoniacal solution Recovery of cobalt values by absorption from ammoniacal solution

1981-12-21

1983-05-03

Hearn, Brian E.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Iron group metal

C01G 5100

Patent

active

043820824

ABSTRACT:
The recovery of metal values such as cobalt may be improved in a hydrometallurgical recovery of metal values from metal-bearing sources such as ores and the like. The hydrometallurgical recovery process involves subjecting a metal-bearing source to a reductive roast in a reducing atmosphere after having treated said source with at least one additive. Thereafter, the reduced metal-bearing source is cooled and extracted by a leaching operation such as treatment with an ammoniacal ammonium salt solution. The leaching step is followed by a separation of various metal values by adding a solid adsorbent to the leach solution whereby selective metal ions are adsorbed thereon. The improvement of the process involves subjecting the solid adsorbent to a stripping operation with a stripping agent such as steam or a gas at an elevated temperature prior to recovery of the adsorbed metal ions from the solid adsorbent by conventional means such as acid-stripping.

REFERENCES:
patent: 3661564 (1972-05-01), Gandon
patent: 3772423 (1973-11-01), Stevens
patent: 3772424 (1973-11-01), Stevens
patent: 3845189 (1974-10-01), Miller
patent: 3948769 (1976-04-01), Dobbs
patent: 4187281 (1980-02-01), Stauter
Helfferich, Ion Exchange, McGraw-Hill Book Co., (1962) pp. 17, 18.

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