RECOVERY OF NICKEL AND COBALT FROM LEACH SLURRIES

摘要

A slurry, such as might be obtained from acid leaching nickeliferous ores having a high iron content, is treated to separate dissolved nickel or cobalt from iron oxide solids. The treatment involves a controlled precipitation of the nonferrous metal with the aid of calcium sulfide or barium sulfide followed by floatation to recover a high grade concentrate of the non-ferrous metal.