Recovering mineral values from ores

Details Recovering mineral values from ores Recovering mineral values from ores

1982-12-20

1989-11-14

Thexton, Matthew A.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

423 3, 4236585, 423DIG15, 241 14, 241 22, C22B 6002, C01G 4301

Patent

active

048806072

ABSTRACT:
Mineral values, particularly uranium, are recovered from mineral containing ore by separating the ore into a coarse fraction and a fines fraction, adding a diluent solid material, such as a portion of barren coarse fraction to the fines fraction and leaching the thus diluted fines fraction with a leach solution. The coarse fraction is separately leached, preferably under mild conditions of temperature and leach solution concentration. In another aspect, the total ore is leached, preferably under mild conditions, the thus leached ore is separated into a coarse fraction and a fines fraction, the fines fraction is again leached and at least a part of the leached fines fraction from the second leach step is recycled to the first leach step.

REFERENCES:
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patent: 3817457 (1974-06-01), Clark
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Editors, Chemical Engineering, vol. 64, No. 9 (1957), "How to Get Double Duty from Pebble Mill", p. 144.
Merritt, Robert C., The Extractive Metallurgy of Uranium, Colorado School of Mines Research Institute, 1971, pp. 33-34, 47-48, 59-63, 68, 70-73, 76-79, 270-273.
Tame, K. E. and J. B. Rosenbaum, Beneficiation of Uranium Ores, Bureau of Mines, RI 5884, 1961.

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