Molten salt extraction process for the recovery of valued transi

Details Molten salt extraction process for the recovery of valued transi Molten salt extraction process for the recovery of valued transi

1987-08-21

1988-08-09

Andrews, R. L.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group viib metal

204 64R, 75 1028, 75 104, 75 1064, 75 63, 75 72, 75 62, 75 80, C01G 4500

Patent

active

047626941

ABSTRACT:
A process for extracting transition metals and particularly cobalt and manganese together with iron, copper and nickel from low grade ores (including ocean-floor nodules) by converting the metal oxides or other compositions to chlorides in a molten salt, and subsequently using a combination of selective distillation at temperatures below about 500.degree. C., electrolysis at a voltage not more negative than about -1.5 volt versus Ag/AgCl, and precipitation to separate the desired manganese and cobalt salts from other metals and provide cobalt and manganese in metallic forms or compositions from which these metals may be more easily recovered.

REFERENCES:
patent: 2425995 (1947-09-01), Christensen
patent: 3028233 (1962-04-01), Schaefer
patent: 3764493 (1973-10-01), Nicks et al.
patent: 3894927 (1975-07-01), Kane
patent: 3901775 (1975-09-01), Kane
patent: 3940470 (1976-02-01), Kane et al.
patent: 4144056 (1979-03-01), Kruesi
"Pyrochemical Solvolysis of Ore-Bound Transition Metals", 1985.
"Pyrochemical Extraction of Transition Metals from Pac. Ocean Deep Sea Nodules". (1987)

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