Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Radioactive metal
Patent
1979-08-01
1983-02-15
Miller, Edward A.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Radioactive metal
423 2, 423 8, 423 18, 423 88, 423149, C01G 4300, C01F 1500, C01G 2800, C01G 4900
Patent
active
043740960
ABSTRACT:
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 (preferably 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 be 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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Haque Kazi E.
Lucas Bernard H.
Ritcey Gordon M.
Skeaff James M.
Canadian Patents & Development Limited
Miller Edward A.
Thomson Alan A.
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