FIELD: metallurgy.
SUBSTANCE: invention relates to hydrometallurgy and can be used to extract lithium from natural brines and water. Method involves adding isopropyl alcohol as a lithium chloride solvent to lithium-bearing hydromineral raw materials, their mechanical stirring to a homogeneous aqueous suspension containing isopropyl alcohol with lithium chloride dissolved therein; cooling the aqueous suspension to subzero temperature and removing formed ice crystals and impurity crystals therefrom during cooling until separation of a separate liquid phase of isopropyl alcohol with lithium chloride dissolved therein; passing a separate liquid phase through a fine filter, its further heating until evaporation of isopropyl alcohol and separation of crystalline lithium chloride.
EFFECT: higher concentration of lithium chloride.
1 cl, 1 dwg
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