METHOD OF PROCESSING SULPHATE-CHLORIDE PRODUCTIVE SOLUTIONS OF UNDERGROUND LEACHING OF URANIUM Russian patent published in 2024 - IPC C22B60/02 C22B3/24 B01D15/04 

FIELD: hydrometallurgy.

SUBSTANCE: invention can be used for concentration of uranium from productive solutions of borehole underground leaching and its purification. Method involves sorption of uranium with a phosphorus-containing cationite, washing the cationite with water, two-stage desorption of uranium with solutions of an ammonium carbonate and precipitation of a uranium concentrate in the form of ammonium uranyl tricarbonate from the desorbates. At the same time, at the first step, desorption is carried out with a solution of ammonium carbonate with concentration of 80–100 g/dm³, at the second stage—with a solution of ammonium carbonate with concentration of 140–190 g/dm³.

EFFECT: increased extraction of uranium from sulphate-chloride productive solutions of borehole underground leaching and purification of uranium from chloride ions.

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