青海某复杂铜铅锌矿选矿试验研究

Metallurgical Testwork of a Complex Cu-Pb-Zn Ore from Qinghai

青海某多金属矿含铜0.061%、含铅1.04%、含锌3.03%、含铁32.76%,矿物组成复杂,含有方铅矿、闪锌矿、磁铁矿、磁黄铁矿等多种矿物,综合利用难度较高。针对该矿石性质,本文采用铜铅混合浮选-磁选-磁选精矿脱硫-磁选尾矿选锌的工艺流程,达到了矿石各组分综合利用的目的。在实验室条件下,可以获得铜品位为2.19%、铜回收率为46.16%、铅品位为60.72%、铅回收率为90.98%的铜铅混合精矿,锌品位为45.16%、锌回收率为88.94%的锌精矿,以及铁品位为66.35%、含硫0.10%的铁精矿。

A polymetallic ore occurring in Qinghai grades 0.061% Cu, 1.04% Pb, 3.03% Zn and 32.76% Fe, and contains multiple minerals, including galena, sphalerite, magnetite, pyrrhotite, etc. The comprehensive utilization of these minerals is of high difficult. Considering the properties of the ore, the process flow of Cu-Pb bulk flotation-magnetic separation-magnetic concentrate desulfurization-Zn separation from magnetic tailings was adopted, achieving the comprehensive utilization of each composition of the ore. Under laboratory conditions, the Cu-Pb bulk concentrate grading 2.19% Cu and 60.72% Pb, with Cu and Pb recovery respectively as 46.16% and 90.98%, the Zn concentrate grading 45.16% Zn with Zn recovery of 88.94%, and the Fe concentrate grading 66.35% Fe and 0.10% S can be obtained.