Impurity removal process in a zinc electrowinning electrolyte circuit comprises adding water and a zinc source to precipitate the zinc content of the depleted electrolyte prior to further treatment

摘要

Impurity removal from a zinc electrolysis electrolyte circuit involves adding water and a zinc source to precipitate the zinc content of the depleted electrolyte prior to further treatment. Preferred Features: The zinc-containing material is 'Walzoxid' (sic) added in amount to obtain pH 5.5-6.5 for precipitation of zinc as basic zinc sulfate (ZnSO4.3Zn(OH)2.4H2O).