Process for the oxidative dissociation of chrome-containing ores

Details Process for the oxidative dissociation of chrome-containing ores Process for the oxidative dissociation of chrome-containing ores

1980-08-27

1982-10-19

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vib metal

423 53, 75 3, 23313R, C01G 3714

Patent

active

043550061

ABSTRACT:
A process for the oxidative dissociation of chrome-containing ores comprising agglomerating a mixture of a chrome-containing ore, an alkaline substance and a moist solid residue from a preceding operation as a leaning agent, dissociating the agglomerate and then leaching to form a solution of chromate and a solid residue, and separating said solution from said solid residue still wet with said solution. Advantageously the alkaline substance comprises sodium hydroxide or sodium carbonate, the still wet residue is added in such a quantity that the agglomerates obtained have a moisture content of between about 10 and 15% by weight, and at least about 70% by weight of the agglomerates have a diameter from about 0.1 to 3 mm.

REFERENCES:
patent: 1948143 (1934-02-01), Tarr
patent: 2394793 (1946-02-01), Maier
patent: 3095266 (1963-06-01), Lauder et al.
patent: 3816094 (1974-06-01), Low et al.
patent: 3816095 (1974-06-01), Bruen et al.
patent: 4244925 (1981-01-01), Subbanna et al.

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