Abstract: The grade of copper and cobalt in high mud copper-cobalt ore from SICOMINES in Congo (DRC) is 2.51% and 0.246% respectively. The ore is seriously mudded, the washability is poor, and the flo‐ tation recovery rate of copper and cobalt is not high. In order to strengthen the separation of high-slime cop‐ per-cobalt ore, the anionic collector RS was used for enhanced flotation. Finally, a copper sulfide concen‐ trate with copper and cobalt grades of 4.05% and 0.72%, copper and cobalt recovery rates of 4.10% and 7.83%, a copper oxide concentrate with copper and cobalt grades of 10.16% and 0.56%, copper and cobalt recovery rates of 71.05% and 41.89%，a enhanced flotation concentrate with copper and cobalt grades of 1.41% and 0.21%, copper and cobalt recovery rates of 8.00% and 12.83% were obtained. The total copper recovery rate of copper sulfide concentrate, copper oxide concentrate and was 83.15%, and the total cobalt recovery rate was 62.55%. The resource utilization rate of high mud copper-cobalt ore is significantly im‐ proved.

Key words: high mud copper-cobalt ore, anionic collector RS, flotation