FIELD: nonferrous metallurgy; applicable in purification of zinc sulfate solutions produced in metallurgical processing of various sulfide or oxidized materials. SUBSTANCE: method of realized by electrolytic precipitation of cobalt and nickel impurities from solutions containing copper in amount of 0.5-80 mg/l with help of zinc dust in presence of activating addition in form of aqueous suspension of colloid antimony trioxide with zinc dust-antimony trioxide mass ratio of (50-300):1. EFFECT: higher degree of electrolytic precipitation of cobalt and nickel impurities from solutions. 1 tbl, 1 ex
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