FIELD: chemical technology. SUBSTANCE: suspension obtained after precipitation with sulfur dissolved in alkali is treated firstly with alkali at ratio to elemental sulfur containing in suspension (1.5-2.0):1, preferably, at (1.6-1.9): 1. Then parental zinc sulfate solution is fed up to complete conversion of elemental sulfur. EFFECT: improved method of products producing. 3 tbl
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