Abstract: The contents of value elements of a copper-containing gold-siliver ores in a Colombia are gold of 7.61 g/t， silver of 44.62 g/t and copper of 0.10%， respectively. The original process is the combined process of gravity separation and direct cyanide leaching for gravity separation tailings， causing the problems of low leaching rate of silver， a large amount of copper leaching and difficult in the subsequent treatment of pregnant solution. In view of the above problems， the combined process of beneficiation and metallurgy test research were conducted with gravity separation， copper prior flotation for gravity separation tailings， gold-silver flotation for copper flotation tailings and cyanide leaching of gold-silver concentrate. The results showed that: ① The sulfide minerals in the ores is mainly pyrite， and the gold-bearing minerals are mainly electrum. The silver-bearing minerals are mainly antimony tetrahedrite， and the copper minerals are mainly chalcopyrite. ② A comprehensive gold concentrate containing gold of 34.10 kg/t gold， silver of 9.34 kg/t， copper of 0.072%， gold recovery rate of 44.56%， silver recovery rate of 2.06% and copper recovery rate of 0.006 6% could be obtained by two-stage gravity separation process with Nelson gravity separation roughing and super-panner cleaning. ③ Copper prior flotation process is adopted for gravity separation tailings. Under the condition of grinding fineness of -74 μm accounting for 64%， Na2CO3 and Z-200 as regulator and collector respectively， copper concentrate with copper grade of 24.47%， gold grade of 402.4 g/t， silver grade of 8 841.6 g/t， copper recovery rate of 63.92%， gold recovery rate of 25.62%， silver recovery rate of 55.96% was obtained after two roughing and two cleaning process. ④ The total recovery of gold， silver and copper was 88.21% ， 77.02% and 63.92%， respectively， during the whole process test with combined process of beneficiation and metallurgy. Not only the copper minerals were recovered， the copper leaching amount and sodium cyanide unit consumption decrease， but also the subsequent treatment process of pregnant solution were improved. In the same time， the total recovery of silver was improved obviously， which greatly reduced the treatment amount of cyanide tailings.

Key words: copper-containing gold-silver ores, Nelson gravity separation, copper prior flotation, combined process of beneficiation and metallurgy, total recovery rate of copper