Method of reducing radioactive waste and of recovering...

Details Method of reducing radioactive waste and of recovering... Method of reducing radioactive waste and of recovering...

C - Chemistry, Metallurgy

22

B

53/212

C22B 60/02 (2006.01)

Patent

CA 1139955

9 48,039 ABSTRACT OF THE DISCLOSURE A method is described for reducing the volume of radioactive waste produced during the solution mining of uranium and for recovering uranium from it. The recovery leach, which contains uranium in solution and is super- saturated with calcium carbonate, is created with bicar- bonate and made basic which precipitates calcium carbonate and some of the uranium. The precipitated calcium carbon- ate is dissolved with acid and the uranium in the solution is removed by extraction or precipitation. The remaining solution is contacted with sulfate ions and barium or strontium ions to precipitate BaSO4?RaSO4 or SrSO4?RaSO4, the principal radioactive constituent in the solid waste product.

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