Recovery of uranium from material containing iron, arsenic...

Details Recovery of uranium from material containing iron, arsenic... Recovery of uranium from material containing iron, arsenic...

C - Chemistry, Metallurgy

22

B

53/212

C22B 60/02 (2006.01) C01G 28/00 (2006.01) C01G 53/11 (2006.01)

Patent

CA 1156047

ABSTRACT OF THE DISCLOSURE A process for the recovery of uranium values from uranium-containing material which also contains iron, arsenic and siliceous matter, includes leaching the uranium-con- taining material in aqueous sulphuric acid solution under conditions to provide dissolved iron present in the resultant leach solution as predominantly ferrous iron rather than ferric iron and/or to provide a sulphuric acid concentration in the leach solution sufficiently high to substantially prevent the precipitation of arsenates. Uranium values are recovered from the leach solution by solvent extraction agent which has little affinity for arsenic.

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