Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal
Patent
1976-03-17
1977-07-26
Carter, Herbert T.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ib metal
423100, 423101, 423 24, 423571, 423109, 423 41, 423139, 423143, 423150, 423141, 423 43, 75101BE, 204106, 204233, C01G 300, C01G 500, C01G 900, C01G 700
Patent
active
040383610
ABSTRACT:
The ore is subjected to nitric acid leaching and the leach solution is heated to a temperature at which one of the additional sulfur and iron values is selectively insolubilized with respect to the solution, while the other is maintained in solution for subsequent separation from the liquor after the insolubles have been removed and the liquor has been neutralized. In addition, in one embodiment of the invention the heating and acid neutralization steps are controlled within certain prescribed limits to make it possible to remove the metals from the liquor by solvent extraction without the problem of lasting precipitates forming in the liquor and fouling the extraction process. Where there is a sizable amount of dissolved iron in the liquor, the liquor may be subjected to autoclaving at a temperature above about 149.degree. C (300.degree. F) to precipitate the iron as the oxide thereof. This effect is possible even where the liquor is high in sulfate concentration.
REFERENCES:
patent: 1119473 (1914-12-01), Thacker
patent: 2344004 (1941-03-01), Six
patent: 2643204 (1953-06-01), Manche
patent: 2762703 (1956-09-01), Manche
patent: 2898196 (1959-08-01), Forward et al.
patent: 2916357 (1959-12-01), Schaufeberger
patent: 3034864 (1962-05-01), Noshman et al.
patent: 3637371 (1972-01-01), Mackin et al.
patent: 3656937 (1972-04-01), Gandon et al.
patent: 3793429 (1974-02-01), Queneau et al.
Bjorling et al., "Result of Papers Published from the International Mineral Congress, Technical Papers", 7th Meeting, N.Y., N.Y., 1964, published 1965.
Carter Herbert T.
Duffy Christopher
International Ore Technology, Inc.
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