Abstract: The process mineralogy study of a copper-cobalt ore in Congo（Kinshasa） was carried out to supply the essential data for the exploitation and utilization. The results indicated that the copper grade in the ore is 3.12% and the cobalt grade is 0.15%. Copper mainly exists in the form of chalcocite， cuprite and malachite， and cobalt mainly exists in the form of heterogenite and psilomelane. Gangue minerals in the ore are mainly quartz， sericite chlorite and so on. Dissemination granularity of malachite and silica-malachite are coarse and uneven， mainly ranging from 0.04 mm to 0.64 mm； Dissemination granularity of chalcocite is medium and well-distributed， mainly ranging from 0.02 mm to 0.32 mm； Dissemination granularity of cuprite is similar to that of chalcocite， mainly ranging from 0.02 mm to 0.32 mm； Dissemination granularity of heterogenite is well-distributed， mainly ranging from 0.02 mm to 0.16 mm. Most of the useful minerals are irregularly distributed in granular form， and complex intergrowth relationship exists in the minerals. The theoretical recovery of copper sulfide and cuprite concentrate is about 50%， and that of copper oxide concentrate is about 41%； The theoretical recovery of cobalt in copper sulfide and cuprite concentrate is about 2%， that of cobalt oxide concentrate is about 50%. Cobalt dispersed in siltstone is about 30% of total cobalt.

Key words: Copper-cobalt ore, Process mineralogy, Dissemination characteristics