摘要
某含铜镜铁矿的铜品位为0.42%,全铁品位为33.35%。有用矿物为黄铜矿和镜铁矿,脉石矿物为石英、长石、绢云母、黄铁矿等。由于部分镜铁矿与含硅脉石及黄铁矿的嵌布粒度过细(小于5μm),细磨后仍存在大量连生体,使得含硅脉石和少量黄铁矿进入磁选精矿中,影响精矿的铁品位和硫含量。试验先采用一粗、三精、两扫的优浮工艺流程选铜,后采用一粗、再磨、一精的磁选工艺流程选铁。最终获得铜精矿品位为20.43%,回收率为91.45%;铁精矿的铁品位为58.35%,铁回收率为76.72%的良好指标。
The run-of-mine ore of specularite-copper contains copper 0.42% and iron 33.35%, among which the valuable minerals are chalcopyrite and specularite and the gangue minerals mainly consist of quartz, feldspar, mica and pyrite. As the disseminated relationship among specularite and silicates and pyrite gangne minerals are very complex, and the dissemination size of gangue minerals in specularite is less than 5 μm. There is still a lot of inter- growth in the fine grinding products, which makes the siliceous gangne and pyrite enter the magnetic concentrate, re- suiting in the reduetionof iron grade and the increases the sulfur content in concentrate. When the process of prior flotation with one roughing, three cleanings and two scavengings was used to recover copper from ore firstly, then a magnetic separation process with one roughing, regrinding and one cleaning was used to recover specularite from flo- tation tailings specularite ,a copper concentrate with the copper grade of 20.43% and the copper recovery of 91.45% and a concentrate with the iron grade of 58.35% and the iron recovery of 76.72%were obtained.
出处
《矿产综合利用》
CAS
2014年第1期35-39,共5页
Multipurpose Utilization of Mineral Resources
关键词
镜铁矿
黄铜矿
优先浮选
磁选
Specularite
Chalcopyrite
Prior flotation
Magnetic separation
