| Higher selective composite collectors and combined depressants without cyanide were used in part-bulk flotation and Cu-Pb separation of Pb-Zn ore containing silver and copper. By using this new technology,the concentrate quality and recovery can be greatly increased.The grades of Cu,Pb,Zn concentrates obtained in industrial test were 25. 31% Cu,65.10% Pb and 47.43% Zn respectively,and recoveries were 72.56% Cu,86.60% Pb,67.26% Zn and 86.26% Ag.The recoveries have been increased by 46.70% Cu,2.62% Pb,1.48% Zn and 7.33% Ag respectively compared with the previous process technology.Great profits have been gained from this process. |