陕西某低品位铜铅锌硫化矿石选矿试验

Beneficiation Test of a Low grade Copper-Lead-Zinc Sulfide Ore in Shaanxi

针对陕西某低品位铜铅锌硫化矿石性质的特点,采用铜铅部分优先混合浮选原则流程,以西北矿冶研究院研制的锌抑制剂T80、铜铅混合浮选捕收剂酯-12、铜铅分离铅抑制剂T81为关键药剂,对该矿石进行了选矿试验研究。结果表明,采用1粗3精1扫铜铅混浮、1粗1精1扫铜铅分离、1粗2精1扫选锌、中矿顺序返回流程处理该矿石,获得了铜品位为28.96%、回收率为63.71%、伴生银品位为980.84 g/t、回收率为17.95%的铜精矿,铅品位为45.37%、回收率为81.87%、伴生银品位为689.96 g/t、回收率为36.05%的铅精矿,锌品位为50.44%、锌回收率为89.36%的锌精矿。

According to the ore properties of a low grade copper-lead-zinc ore from Shaanxi, the paper adopted the principle flowsheet of copper-lead part-bulk flotation, with the Zn inhibitors Ts0 and collector ester-12 for copper-lead flota- tion and Pb depressant Tal developed by Northwest Research Institute of mining and metallurgy as key reagents. Through study on ore mineral processing experiment ,the results show that the process of one roughing three cleaning one scavenging for copper-lead mix-flotation, one roughing one cleaning one scavenging for copper-lead separation, one roughing two clean- ing one scavenging for zinc flotation and middlings returned in order to the flowsheet is adopted to treat the ore. The copper concentrate with Cu grade and recovery of 28.96% and 63.71% , associated Ag grade and recovery of 980.84 g/t and 17.95% ,Lead concentrate with Pb grade and recovery of 45.37% and 81.87% , and associated Ag grade and recovery of 689.96 g/t and 36.05% , and Zinc concentrate with Zn grade and recovery of 50.44% and 89.36% were separately achieved.