A PROCESS FOR EXTRACTION OF COPPER, NICKEL AND COBALT FROM COMPLEX SULPHIDE CONCENTRATE

摘要

A process for extraction of copper, nickel and cobalt from complex sulphide concentrate The invention relates to a process for extraction of copper, nickel and cobalt from complex sulphide concentrate. In the process copper,nickel and cobalt is extracted from complex sulphide concentrate by ammonical leaching under pressure thereby dissolving the valuable metals as their amine complexes and producing ammonium sulphate used as fertilizer. Ammonia leaching requires less stringent material of construction for autoclave as compared to acid system. .