Experimental Study on Environmental Protection and Efficient Separation of Copper-Lead Mixed Concentrate with Fine-Grained High-Carbon
The associated copper content in the raw ore of Huangshaping lead-zinc mine is 0.09％-0.25％.The copper-lead mixed concentrate produced by the beneficiation plant contains Cu 1.0％-1.8％and Pb 55％-68％.The organic carbon content in the mixed concentrate is high,and the particle size is fine,which causes it is easy to float but difficult to suppress.At the same time,a large amount of reagents should be consumed,and conventional copper lead separation processes and flotation reagents cannot effectively separate them.Based on the characteristics of the ore,a process flow of"stirring and demedicating-settling and desliming(carbon)—suppressing lead and floating copper"was proposed and an environmentally protection and efficient lead inhibitor CK-DQ was adopted.Through industrial trials,copper concentrate with copper grade of 25.70％and copper recovery rate of 64.52％and lead concentrate with lead grade of 66.44％and lead recovery rate of 99.63％were obtained,achieving efficient separation of low copper and high-carbon copper-lead mixed concentrates without chromium and cyanide.
Separation of copper and leadOrganic carbonDeslimingFlotation
万方数据
维普
