Abstract: To clean,efficient and low-cost develop a cobalt mineral resources in Congo (gold),which containing 0.606% cobalt,1.45% copper,a new activation flotation-magnetic separation combined process was conducted for complex dissemination and high smud of the ore.The final comprehensive concentrate index with cobalt grade of 1.627% and recovery of 74.34%,copper grade of 4.71% and recovery rate of 88.14% was obtained.Compared with conventional xanthate sulfide method,the process has stable process,well adaptability and simple operation,which can provide reference for the processing technology of similar mineral resources in Congo (gold).

Key words: Cobalt oxide, High gradient magnetic separation, Flotation and magnetic combined process