Beneficiation experiments on a gold-bearing quartz vein-type gold ore from Tibet

A gold-bearing quartz vein-type gold ore is from Tibet, and the main gold content is electrum,the particle size is small and uneven, gold of grade 3.22 g/t is the main recycling elements and silver of grade 19.50 g/t is the comprehensive recovery element.According to the ore properties, the flotation-flotation tailings cyanide leaching process was used to recycle gold from the ore.A gold concentrate with gold grade of 95.81 g/t and gold recovery rate of 84.34% were obtained through the one roughing one cleaning one scavenging and middlings back to the flow-sheet in turn process.Flotation tailings were cyanide leached, gold leaching rate of 79.31% and ore gold recovery rate of 12.42% were obtained.The total gold recovery rate of 96.76% were obtained through the union process.The silver grade of the flotation gold concentrate and tailings were 407.01 g/t and 5.97 g/t respectively, and the silver recovery rate of concentrate was 68.78%; silver leaching rate of 51.53% and ore silver recovery rate of 15.98% were obtained from leaching process.The comprehensive recovery rate of silver is 84.76%.