Abstract:

In order to efficiently recover and utilize copper-cobalt ore with high oxidation rate，the flo⁃

tation + magnetic separation process test is carried out to solve the problems of high oxidation rate of copper

ore and unsatisfactory ore recovery effect in SICOMINES mining area of Congo (DRC). In the flotation stage，

sodium hydrosulfide is used as the vulcanizing agent，amyl xanthate is used as the collector，and 2# oil is

used as the foaming agent. In the magnetic separation stage，the magnetic separation process of one rough⁃

ing，one cleaning and one scavenging is adopted. Finally，the copper sulfide concentrate with copper and co⁃

balt grade of 60.35% and 0.10% respectively and copper and cobalt recovery of 21.93% and 0.44% respec⁃

tively，the copper oxide concentrate with copper and cobalt grade of 14.27% and 0.66% respectively，cop⁃

per and cobalt recovery of 48.87% and 27.95% respectively，the flotation cobalt concentrate with copper

and cobalt grade of 4.38% and 0.34% respectively，and copper and cobalt recovery rate of 8.53% and

8.28% respectively are obtained，the concentrate with copper and cobalt grade of 2.25% and 0.32% respec⁃

tively，copper and cobalt recovery rate of 5.84% and 10.29% respectively is obtained by magnetic separa⁃

tion. The total copper recovery rate of copper sulfide concentrate，copper oxide concentrate，flotation cobalt

concentrate and magnetic concentrate is 85.17%，and the total cobalt recovery rate is 46.96%，which realiz⁃

es the efficient recovery of high oxidation rate ore.

Key words:

copper-cobalt ore with high oxidation rate , flotation, magnetic separation