PROCESS FOR SEPARATING AND RECOVERING NICKEL AND COBALT

摘要

material after the oxidation roasting stage and contg. impurities, is treated with HCl to form an aq. soln. which is then treated by solvent extraction with a solvent which forms an organic phase contg. one of the metals and the majority of impurities, and a first aq. phase contg. the other metal and the remaining impurities. The organic phase is brought into contact with water to form a second aq. phase. The two aq. phases are then treated separately for removing the impurities, and to give pure solns. of the two metals.