Experimental Study on High-Efficient Collector EP Flotation of Skarm Type and Complex Refractory Copper Sulfide Ore

The content of copper and sulfur in Yongping Copper Mine is 0.590% and 10.65% respectively,the Cu oxidation rate of the ore is about 15.25%.According to this complex and refractory skarm type copper ore with the disadvantages such as high sulfur and oxidation rate and serious sliming degree,the preferential flotation flowsheet was adopted to fully float Cu mineral with low flotation performance,and a high-efficient collector was selected to improve the flotationability and selectivity of copper minerals.By optimizing processing parameters such as copper collector type,pulp pH of copper rough flotation,reagent,agitation and aeration ability and so on,higher beneficiation technical index was obtained by closed-circuit test,the grade and recovery of copper in copper concentrate was 24.65% and 77.67% respectively,and sulfur concentrate with the grade of 48.30% and recovery of 82.69%.