云南某低品位含铁硫化铜矿综合回收试验研究

Experimental Study on Comprehensive Recovery for One Low-grade Copper Sulphide Ore Containing Iron in Yunnan

云南某低品位含铁硫化铜矿含铜0.485%,铁10.84%,硫0.382%,氧化钙6.06%,二氧化硅49.46%,三氧化二铝12.50%,氧化镁2.58%,氧化钠4.07%等;铜以独立矿物的形式赋存于黄铜矿、斑铜矿、铜蓝及孔雀石中,以黄铜矿、斑铜矿为主;铁主要以独立矿物的形式赋存于磁铁矿中,其次以类质同象的形式赋存在石英、绿泥石、角闪石、斜长石、石榴石等矿物中;矿石结构复杂,有用矿物粒度粗细极为不均。依据矿石工艺矿物学研究结果,选矿试验研究表明,该含铁硫化铜矿采用"浮选-弱磁选"的选别工艺较为适宜,获得了铜精矿品位19.95%,回收率90.72%;铁精矿品位61.24%,回收率50.09%的扩大试验技术指标。为该低品位资源利用提供了较好的技术支撑。

The content of Cu, Fe, S, Ca O, SiO_2, Al_2O_3, MgO, Na_2O is 0.485%, 10.84%, 0.382%, 6.06%, 49.46%, 12.50%, 2.58%, 4.07% respectively in one low-grade copper sulphide ore containing iron in Yunnan. Copper in the form of an independent mineral occurred in chalcopyrite, bornite, covelline and malachite, mainly in the form of chalcopyrite and malachite. Iron mainly in the form of an independent mineral occurred in magnetite, secondly isomorphic in the form of quartz, chlorite, amphibole, plagioclase, garnet. The ore structure is very complex and the particle size is very uneven. Based on the process mineralogy and test study of the ore, the process of ＂flotation-low-intensity magnetic separation＂ was determined. The concentrate grade of Cu, Fe is 19.95%, 61.24%, the recovery of Cu, Fe is 90.72%, 50.09% through the amplifyingteststs. The process provides a good technical support to utilize the low content ore.