Hydrometallurgical recovery of metal values

Details Hydrometallurgical recovery of metal values Hydrometallurgical recovery of metal values

1976-04-21

1978-01-17

Vertiz, O. R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 49, 423150, 423240, C01G 314, C01G 4500, C01G 5112, C01G 5312

Patent

active

040692949

ABSTRACT:
In the hydrometallurgical recovery of metal values from ores and the like in which a metal bearing source is reduced in the presence of at least one additive at temperatures ranging from about 500.degree. to about 900.degree. C. and thereafter extracted, the improvement of said process comprises pretreating a portion of process tails from a preceding run with the additive prior to the reducing roast. The additive which is used to pretreat the minor portion of the feed stock may comprise that which is recovered from the roaster offgas and admixed with a portion of the tail stream from the extraction step.

REFERENCES:
patent: 2045092 (1936-06-01), Mitchell
patent: 2074013 (1937-03-01), Bradley
patent: 2094277 (1937-09-01), Mitchell
patent: 3492083 (1970-01-01), Lowicki
patent: 3655364 (1972-04-01), Evans
patent: 3661564 (1972-05-01), Gandon et al.
patent: 3845189 (1974-10-01), Miller et al.

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