Refining of manganese oxide ores

Details Refining of manganese oxide ores Refining of manganese oxide ores

1975-01-09

1977-01-11

Andrews, R. L.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 39, 423 41, 423 51, 423139, 423150, 423568, 423571, 423605, 423488, 75101R, 75114, 75115, B01D 1104, B01F 100

Patent

active

040027171

ABSTRACT:
This invention provides a method for treating manganese oxide ores in an aqueous medium, with hydrogen halide or sulfuric acid, and a hydrogen sulfide or a metal sulfide, e.g. an ore. A leach liquor containing the desirable metal halides is then separated from the solid, insoluble residue. Any iron value in either the manganese oxide ore or in any metal sulfide ore present is not dissolved or is converted to an insoluble iron oxide. Elemental sulfur is also obtained.
The metal values in the leach liquor are recovered by crystallization of the manganese halide and liquid ion exchange extraction of the other metal values present.

REFERENCES:
patent: 3510259 (1970-05-01), Everett
patent: 3809624 (1974-05-01), Kane et al.
patent: 3854851 (1974-12-01), Cardwell et al.
"Progress in Mineral Dressing," by G. Bjorling, Trans. of The International Mineral Dressing Congress, Stockholm, 1957, pp. 705-709.

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