EXTRACTION OF URANIUM Russian patent published in 2022 - IPC C22B60/02 C22B3/24 C01G43/00 

FIELD: chemical or physical processes.

SUBSTANCE: invention relates to a method of extracting uranium from uranium-loaded resin. Solution (A) is brought into contact with resin (A) to obtain a mixture of solution (B) and resin (B). Solution (A) is an aqueous solution containing dissolved sodium carbonate, sodium bicarbonate or a mixture thereof, and resin (A) is a strongly acidic cation-exchange resin, which contains one or more cationic fragments, which contain uranium, and one or more cationic fragments, which contain iron. Solution (B) containing uranium is separated from resin (B). Strongly acidic cation-exchange resin is a polymer, in which 50 mol. % or more of polymerised links contain one or more sulphonate groups covalently bonded to said polymerised link, and the sulphonate group is in a protonated form, in a neutralized form, including one or more cations other than H⁺, in an ionic form or in a mixture thereof.

EFFECT: method provides efficient extraction of uranium, and at the same time provides separation of iron from uranium.

6 cl, 6 dwg, 2 tbl, 5 ex