Separation of Copper From Nickel and Cobalt by Liquid-Liquid Extraction From Ammoniacal Solutions

CIM Bulletin, 1972

G. M. RITCEY and B. H. LUCAS, Research Scientists, Hydrometallurgy Section, Extraction Metallurgy Division, Mines Branch, Dept. of Energy, Mines and Resources, Ottawa, Canada

In the conventional alkaline leaching of concentrate containing nickel, copper and cobalt, copper is usually removed from the system, prior to nickel reduction, by sulphide precipitation. A new process is described for the selective extraction of copper and separation from cobalt and nickel, using liquid-liquid extraction. General Mills LIX-63 dissolved in a kerosene diluent is the extractant.
Keywords: Cobalt, cobalt, D. MacPherson, Recovery of Copper, Separation of Nickel, solvent extraction, copper, Cost, Costs, Extraction, nickel, pH, Recovery, Separation