Abstract:Due to the existence of carbonaceous substances and light gangue in the decarburized concentrate of high carbonaceous shale copper cobalt mine in the Democratic Republic of the Congo, the concentration ratio of direct flotation treatment is low and qualified copper cobalt concentrate cannot be formed. Therefore, the decarburized concentrate is discharged into the total tailings on site, resulting in serious loss of copper cobalt metal. In view of the above problems, the study on the properties of decarbonized concentrate samples and the small-scale experimental study on the recovery of copper and cobalt were carried out, and the process flow of centrifugal gravity separation pretreatment centrifugal coarse concentrate flotation was determined, which effectively solved the problem of the interference of carbonaceous substances on flotation. The recommended process was used to treat decarbonized concentrate. The copper concentrate produced in the small-scale closed-circuit test contained 18.45% Cu and CO3 22%, which reached the product sales standard, and the actual recovery rates of copper and cobalt increased by 5.81% and 3.48% respectively.