Mineral Processing Technology of Some Copper-lead-zinc-silver Ore in Northwest China

According to the characteristics of a Cu-Pb-Zn-Ag polymetallic sulfide ore from Northwest China,such as the close paragenetic relationship of minerals and the fine dissemination of copper,lead and zinc minerals,reagents with better selectivity,such as copper collector,YK1-11,and galena depressant,YK3-09,were chosen,a Cu-Pb-Zn selective flotation flowsheet was adopted and the Cu/Pb/Zn separation was effectively actualized.A copper concentrate with a copper grade of 17.12% and a silver content of 4753 g/t can be obtained,while the recovery of copper and silver reached 61.16% and 83.99%,respectively.Meanwhile,a lead-zinc bulk concentrate containing 25.19% of lead and 28.5% of zinc can be prepared with recovery of lead and zinc reaching 43.11% and 33.1%,respectively.Then,a lead concentrate with a lead grade and recovery of 48.11% and 27%,respectively,and a zinc concentrate with a zinc grade and recovery of 43.26% and 43.27%,respectively,can be reclaimed.This study provides a new approach for the exploitation and utilization of Cu-Pb-Zn ore resources.