某低品位铜锌矿浮选分离试验研究

Flotation Experimental Study on a Copper-zinc Sulfide Ore

针对湖南某地尾砂中铜、锌品位低,锌矿物可浮性好,铜锌分离难的问题,采用铜锌混合浮选、铜锌分离的工艺流程,以石灰、硫酸锌、亚硫酸钠为锌硫矿物的抑制剂,乙硫氮为铜矿物的捕收剂,实现了铜锌矿物的有效分离,以及资源的最大化利用,闭路试验获得了含Cu 17.94%、回收率61.47%的铜精矿,含Zn45.43%、回收率59.73%的锌精矿,该工艺为合理开发此类铜锌矿提供了技术支持。

In view of the problem of low grade copper and zinc , the good floatability of zinc mineral and the difficult in separation of copper and zinc in tailings somewhere in Hunan , the test adopted the process of copper -zinc mixed flotation -flotation separation of copper -zinc mixed concen-trate.Copper-zinc flotation separation used lime , zinc sulfate and sodium sulfite as the inhibitors of zinc sulfur minerals , and diethyldithiocarbamate as the collector of copper mineral , which real-ized the effective separation of copper -zinc minerals , as well as the maximum utilization of re-sources .Through closed-circuit experiment the copper concentrate with the grade of 17 .94%and the recovery of 61 .47% and the zinc concentrate with the grade of 45 .43% and the recovery of 59 .73%were obtained respectively .This process provided the technical direction for the reasona -ble development of this type of copper -zinc ore, at the same time put forward the effective recover-y approach of low-grade copper zinc mine of the tailings .