Purification process for alkaline uranium-bearing solutions, contaminated with zirconium.

摘要

Purification process for an alkaline solution of uranium, contaminated with zirconium. The process according to the invention comprises the alkalinisation of a solution whose initial pH is 10 or is less than this value, at a pH of between 11 and 12 (Figure 1), at a temperature of less than 60 DEG C and not exceeding that for which a precipitation of more than 5 % by weight of the content in uranium would also be obtained and the separation of the precipitate formed which contains zirconium. Application to the purification of alkaline uranium-bearing solutions arising from an acidic treatment. <IMAGE>