某铜钼尾矿二次资源综合利用工艺流程设计研究

Study on Process Design for Comprehensive Utilization of Copper-Molybdenum Tailings

云南某铜钼选厂尾矿含磁铁矿3.89%～4.70%,石英27.09%,钠长石6.98%,钾长石33.97%,斜长石12.75%,根据该尾矿性质、试验报告及现场地形条件,设计提出了矿资源综合利用方案,增设1条铁精矿回收系统及1条长石、石英综合回收系统。改扩建完成后,可为企业每年新增磁铁精矿0.66万t,粗砂35.00万t,长石24.03万t,石英砂12.88万t,尾矿排放量减少73.67%。经济成效显著,且有效缓解了尾矿库压力,延长其服务年限。

Tailings of a copper-molybdenum concentrator in Yunnan contain 3.89%~4.70%of magnetite,27.09%of quartz,6.98%of albite,33.97%of potassium feldspar and 12.75%of plagioclase.Based on the nature of the tailings,test report and topographic conditions on site,solution for the comprehensive utilization of the mineral resource is put forward in the design,i.e.to add a system for iron recovery and another one for feldspar and quartz recovery.The reconstruction and expansion will increase magnetite concentrate 6,600 t,coarse sand 350,000 t and feldspar 128,800 t,and reduce the tailings by 73.67%,producing visible economic benefit,mitigating the burden of the tailings pond and prolonging its service life.