Handling of high-cobalt mine in zinc hydrometallurgy

High-cobalt zinc concentrate bring some troubles in zinc hydrometallurgy,such as excess cobalt in middle-supernatant and low refine rate of first refine cobalt etc..Refine rate of first refine cobalt can be increased if a amount of arsenic and antimony can be kept in middle-supernatant and appropriate temperature of middle-supernatant can be controlled.The accumulation of cobalt in intramural circulation can be restrained by controlling appropriate temperature and acidity,making open-circuit to part of cobalt.