Abstract:This paper had a research about mineral processing technology on a sulfide copper-cobalt ore(Cu 1.50%, Co 0.5%) in Congo. The principle process of “copper-cobalt bulk flotation” was determined according to the ore characteristics. Then the efficient recovery of the ore resources was realized by applying the process of "1 roughing-2 scavenging-3cleaning-rough concentrate regrinding” combining the use of new efficient collector BK404B and the new copper-cobalt activator BKNA. Closed-circuit flotation test obtained a copper-cobalt concentrate containing Cu 26.93% , Co 7.24%. The copper recovery of is 93.70% and the cobalt recovery is 78.42. To improve cobalt recovery, magnetic separation test was carried out for flotation tailings. And concentrate containing cobalt 1.18% can be obtained by magnetic separation; the cobalt recovery is 3.2 percentages. It means that the use of flotation-magnetic separation combination process can increase the cobalt recovery by approximately 3.20 percentages.