Comprehensive recovery process of gold tailings resources in Xiangxi gold mine
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Gold-bearing tailings resources in Xiangxi Gold Mine are rare in the world, with fine particles and wrapped gold inlays, and the composition is complex. The recovery of cyanide can Engineering harmful elements antimony, and wrapped in gold micro-fine sulfides, and maximize gold recovery. Using the sulphur dioxide gas discharged from the smelter, the cyanide-containing tailings water is treated to waste treatment and waste, and the process and technical indicators have reached the international advanced level.
Xiangxi Mine has abundant tailings resources. The total amount of three tailings reservoirs is nearly 4 million tons. Among them, the No. 1 reservoir is the old tailings discharged from 1955 to 1968. The average grade of gold, tantalum and tungsten is surveyed. They were 4.18 g/t, 0.174%, and 0.161%, respectively. The industrial production test shows that when the ore grade reaches the average grade, the “flotation gold 锑 + tailings cyanidation†process is adopted, the recovery rate of mineral processing can reach 73.18%, and the strontium can reach 30.5%; The rate is 69.9%, the 锑 is 24%, the annual output of gold is 105 kg, the second is 62 tons, and the annual economic benefit can reach 3.4 million yuan.