Abstract:Chengmenshan Copper Mine is adjacent to Saichenghu District, with an annual tailings output of about 2.5 million tons.With the improvement of national environmental protection requirements, the existing Liujiagou tailing pond capacity is coming to an end.It is of great significance to actively develop the comprehensive utilization technology of tailings for raising the benefit, improving the living environment and sustainable development of the mine. When the sulfur content in the tailings of Chengmenshan Copper Mine is about 2.27%, 35.57% of the standard sulfur concentrate can be obtained through the laboratory closed-circuit flotation process. The overall recovery rate is 94.20%, which can realize the resource recovery and utilization, and the final tailings sulfur content is about 0.14%, which can meet the comprehensive utilization requirements of the final tailings and realize no tailings discharge.