Recovery of uranium from refractory ores
AssigneeThe United States of America as represented by the Secretary of the Interior
InventorsThomas G. Carnahan, Kenneth P. V. Lei
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Abstract
Uranium is recovered from refractory carbonaceous-sulfidic ores or concentrates by leaching with nitric acid, followed by sorption on an ion exchange resin. In addition, the nitric acid leach solution is regenerated and recycled.
Claims4
A process for recovery of uranium from a refractory ore or concentrate containing about 0.05 to 25 percent carbonaceous material and about 0.05 to 25 percent sulfidic material comprising treating the ore or concentrate with a nitric acid solution at a temperature of about 80.degree. to 140.degree. C. to provide a uranium-containing leach solution.
Dependencies are inferred from the claim text.