Removal of molybdenum from uranium-bearing solutions

Details Removal of molybdenum from uranium-bearing solutions Removal of molybdenum from uranium-bearing solutions

C - Chemistry, Metallurgy

22

B

C22B 3/30 (2006.01) C22B 34/34 (2006.01) C22B 60/02 (2006.01)

Patent

CA 2025165

A process for removing molybdenum from uranium bearing solutions reduces molybdenum contamination of uranium product. The process employs solvent extraction techniques to remove molybdenum by using a molybdenum-selective extraction reagent of the chelating hydroxy-oxime type. The molybdenum-loaded extractant is stripped with dilute alkali for reuse. Where the uranium bearing solution originates from a solvent extraction process, a pretreatment stage is applied using an agent to remove entrained uranium extractant.

Procédé pour l'élimination du molybdène de solutions contenant de l'uranium, qui réduit la contamination par le molybdène de l'uranium obtenu. Pour l'élimination du molybdène, ce procédé fait appel à des techniques d'extraction par solvant utilisant un réactif d'extraction sélective pour le molybdène, comportant un agent de chélatation de type hydroxy-oxime. On élimine le molybdène du solvant d'extraction par un traitement de régénération à solution diluée d'alcali. Si la solution d'uranium provient d'un procédé d'extraction par solvant, on peut lui appliquer une étape de prétraitement utilisant un agent qui élimine le solvant d'extraction d'uranium entraîné.

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