Abstract: According to the characteristics of Copper-Lead-Zinc Multi-Metal Minerals, beneficiation tests is made by adopting the principle flow-sheet of desuphurization magnetic separation-copper-lead mixed beneficiation-copper-lead separation from rough mixed concentrate-zinc concentration from mixed tailings. Under the grinding fineness of -0.074 mm 90%, the final copper concentrate with Cu grade of 24.79% and recovery of 55.78%, lead concentrate with Pb grade of 51.34% and recovery of 83.55%, zinc concentrate with Zn grade of 45.63% and recovery of 62.71%, Sulfur concentrate with S grade of 35.12% and the recovery of 80.08%, were obtained respectively through the process of sulfur concentration by one low intensity magnetic separation, copper-lead mixed flotation by one-roughing, two-cleaning and two-scavenging, copper-lead separation by one-roughing, two-cleaning and one-scavenging, zinc concentration by one-roughing, three-cleaning and two-scavenging, and middles back to the flow sheet in order. Copper concentrate contains silver of 229.53 g/t, and lead concentrate contains silver of 196.20 g/t. Total silver recovery from copper and lead concentrates reached 50.29%.

Key words: Copper-lead-zinc multi-metal minerals, Desuphurization magnetic separation, Copper-lead mixture floatation, Copper-lead separation, Zinc floatation, Tc-1, T-101