Uranium extraction

Details Uranium extraction Uranium extraction

C - Chemistry, Metallurgy

22

B

53/212

C22B 60/02 (2006.01) C01D 5/00 (2006.01) C22B 1/06 (2006.01) C22B 1/10 (2006.01) C22B 3/00 (2006.01)

Patent

CA 1093831

ABSTRACT OF DISCLOSURE A process for extracting uranium values from a pyrite concentrate containing at least 20% by weight sulphur and at least 50 grams per ton of uranium, calculated at U308, including the steps of roasting the concentrate at a temperature in the range 650 to 750°C to convert the uranium to uranium sulphate, and solubilising the uranium sulphate in the roasted concentrate by means of a sulphuric acid leach of pH not exceeding 3.

296924

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