NOUFERROUS METALLURGICAL EQUIPMENT

Pulang Copper Mine of Yunnan Diqing Nonferrous Metals Co., Ltd. is the multi-metal super large porphyry copper mine. The results of process mineralogy analysis show that the copper minerals mainly lost in the +0.074mm and -0.025mm fractions, and the +0.074mm fraction is mainly copper-containing intergrowth. The large-scale high-efficiency flotation machine technology was used to study the re-concentration of flotation tailings in Pulang copper mine. The results show that the best results was achieved by returning the concentrate of HIF-680 flotation machine to rougher in main flow after regrinding. The rougher recovery increased by 1.25 percentage points, and the optimum grinding fineness of regrinding was -0.074mm accounting for 77.64%. The tailings reconcentration project based on large-scale high-efficiency flotation machine technology improves the utilization rate of resources and creates considerable economic benefits for the plant.