Experimental Study on Mineral Processing Technology of Cu-Pb-Zn Complex Polymetallic Sulphide Ore

According to the characteristics of a certain Cu-Pb-Zn polymetallic sulphide ore such as the floatability of easy to float yet hard to be separated and the extremely inhomogeneous distribution of dissemination size,a flowsheet consisting of selective floatation of copper,regrinding,cleaning of copper and beneficiation of lead and zinc from copper flotation tailings was selected.Adopting a rational reagent system,good separation indices can be attained: Cu grade and recovery of copper concentrate are 18.02% and 57.50%,respectively,Pb grade and recovery of lead concentrate are 51.43% and 33.20%,respectively,Zn grade and recovery of zinc concentrate are 45.83% and 48.95%,respectively,the Pb grade and recovery,and the Zn grade and recovery for the lead-zinc bulk concentrate are 31.53%,42.56%,38.46% and 34.05%,respectively.