Abstract: A Copper-cobalt oxide ore from Democratic Republic of the Congo contains a small amount of sulfide ore，and the oxidation rates of copper and cobalt are above 83% and 89%，respectively. In order to determine the suitable development and utilization technology of the ores，flotation and leaching test was carried out. The results showed that the flotation concentrate with copper grade of 12.16%，cobalt grade of 1.37%，copper recovery rate of 80.48% and cobalt recovery rate of 61.07% was obtained in indus⁃ trial test with raw ores containing copper 1.31% and cobalt 0.201%. The leaching rates of copper and cobalt from flotation concentrate reached 85.45% and 86.38%，respectively. Compared with the direct leaching process for the ore，the acid consumption of the beneficiation and smelting combined process is significant⁃ ly reduced. Therefore，the floatation and leaching process is a reasonable process for the development and utilization of the ore.

Key words: copper-cobalt ore, oxidation rate, flotation concentrate, leaching rate