云南某铜铁多金属矿初步可选性研究

Preliminary Research on Separability of a Copper-iron Polymetallic Ore in Yunnan

云南省某地二叠纪细碧岩中产出的铜铁矿铜矿物以孔雀石和硅孔雀石等氧化铜为主,铁矿物以细粒磁铁矿和磁赤铁矿等强磁性矿物为主。通过对该矿中的铜矿物采用优先浮选和混合浮选工艺进行对比,确定对铜矿物采用混合浮选工艺回收,并对浮选尾矿中的强磁性矿物采用阶段磨矿阶段弱磁选的工艺流程。原矿经浮选-弱磁选联合工艺选别后,开路流程可获得铜精矿产率6.47%、品位32.24%、回收率67.51%,总铜中矿回收率22.2%和铁精矿产率39.11%、品位65.43%、回收率66.80%,总铁中矿回收率13.39%的技术指标。

In the certain copper-iron ore produced from the Permian spilite in Yunnan province, the copper minerals mainly exists in the form of copper oxide such as malachite and chrysocolla and the iron minerals mainly in the form of high-intensity magnetic minerals such as fine particle magnetite and maghemite. Through the comparison of selective flotation and bulk flotation, at last, the technology of bulk flotation was adopted to recycle the copper miner- als. For the flotation tailings the technology of stage grinding and stage low-intensity magnetic separation was adopted. Through the combined technology of flotation-low-intensity magnetic separation, the iron concentrate can be obtained with the yield of^5.47% ,the grade of 32.24% and the recovery of 67.51% and the recovery of the copper middlings as 22.2%. For the iron concentrate the yield is 39.11% ,the grade is 65.43% ,the recovery is 66.80% and the recovery of the iron middlings is 13.39%.