甲玛复杂铜多金属矿石合理配矿的实验研究与生产实践

Experimental Research and Production Practice of Reasonable Ore Blending of Jiama Complex Copper-Polymetallic Ore

针对甲玛矿区铜矿物种类多、分布不匀、各矿井矿石性质差异大等特点,本文在矿石工艺矿物学研究基础上,对各矿井矿石进行了可选性实验研究,并结合各矿井生产实际,开展了选矿厂入选矿石合理配矿的小型优化实验和生产实践。通过合理配矿方案优化、磨矿中巧妙应用硫化钠、快速浮选等技术措施,连续27天工业生产实践获得铜精矿中铜品位21.90%、金品位8.04 g/t,银品位447.04 g/t,铜回收率91.75%,金回收率67.63%,银回收率66.12%,与合理配矿及工艺技术优化前的年技术指标累计相比,铜金银回收率分别提高1.85、2.27、3.17个百分点.实现了矿产资源的高效综合利用,取得显著的经济效益和社会效益。

Aiming at the characteristics of the variety and uneven distribution of copper minerals in Jiama mining area,and the large differences in the properties of various mines,this paper conducts a test study on the selectability of various mines based on the study of ore technological mineralogy.Combining the various mines in actual production,a small-scale optimization test and production practice of reasonable ore blending of the selected ore from the concentrator have been carried out.Through the optimization of reasonable ore blending schemes,the clever use of sodium sulfide in grinding,and rapid flotation and other technical measures,the industrial production practice for 27 consecutive days has obtained copper grades of21.90%,gold grades of 8.04 g/t,and silver grades of 447.04 g/t,the copper recovery rate is 91.75%,the gold recovery rate is 67.63%,and the silver recovery rate is 66.12%.Compared with the cumulative annual technical indicators before reasonable ore blending and process technology optimization,the copper,gold and silver recovery rates are increased by 1.85%,2.27%,3.17%,respectively Percentage points.The efficient and comprehensive utilization of mineral resources has been realized,and significant economic and social benefits have been achieved.