Uranium ore processing

Details Uranium ore processing Uranium ore processing

C - Chemistry, Metallurgy

22

B

53/178

C22B 60/02 (2006.01) C22B 3/28 (2006.01) C22B 30/04 (2006.01) C22B 60/00 (2006.01)

Patent

CA 1143572

TITLE URANIUM ORE PROCESSING INVENTORS James M. Skeaff Gordon M. Ritcey Kazi E. Haque Bernard H. Lucas ABSTRACT OF THE DISCLOSURE Uranium ores, concentrates, calcines or tailings are processed to remove radium and thorium as well as uranium. Selected ores, concentrates or tailings, or if more appropriate, chlorination calcines thereof, are leached by selected aqueous chlorine-containing media (preferable in two stages) until uranium, radium and thorium are substantially all dissolved, with the insoluble residual solids being suitable for disposal. The leach solution is treated to recover sequentially uranium, usually thorium, and radium by selected techniques. The radium recovered can he disposed of in any environmentally- acceptable manner. The amount of iron in the residual. leach liquor should be controlled to avoid iron build-up, with the barren leach solution being suitable for recycle.

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