FIELD: chemistry.
SUBSTANCE: invention relates to methods of regenerating cation-exchange resins used, in particular, in processes of producing lithium carbonate. In the method of regenerating a cation-exchange resin used for purifying a lithium-containing solution from impurities, regeneration is carried out by feeding into a column with a cation-exchange resin a mother solution obtained at the stage of precipitation of lithium carbonate of the process of producing lithium carbonate.
EFFECT: maintaining mechanical strength of the cationite after repeated cycles of regeneration, increasing the degree of desorption and through extraction of lithium in processes of producing lithium carbonate, reducing consumption of additional reagents, minimizing precipitation of calcium and magnesium.
18 cl, 2 dwg, 5 tbl, 2 ex
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