广东某铅锌矿选矿试验

Beneficiation Tests on a Lead-zinc Ore from Guangdong

广东某铅锌矿属于隐晶质铅锌矿,铅氧化率较高,铅锌共生关系密切。为开发利用该矿石资源,对该矿石进行了选矿试验研究。结果表明,在磨矿细度为-200目70%情况下,采用1粗1精1扫铅锌等可浮、1粗2精1扫选锌、中矿顺序返回流程处理该矿石,最终获得了铅、锌品位分别为29.79%、32.43%,铅、锌回收率分别为90.78%、36.60%的铅锌混合精矿,以及锌品位为56.91%、锌回收率为61.41%的锌精矿,铅、锌总回收率分别达90.78%和98.01%。

A lead-zinc mine in Guangdong province belongs to the implicit crystalline lead-zinc de- posit, with high lead oxidation rate, lead and zinc are closely associated with each other. In order to de- velop and utilize the ore, experimental study was conducted. The results show that with the grinding fine- ness of 70% passing 200 mesh, using lead and zinc simultaneous flotation of one roughing, one cleaning, one scavenging, and one roughing , two cleaning, one scavenging for zinc beneficiation, middles back to the flowsheet in turn, lead and zinc mixed concentrate with lead grade and recovery of 29.79% and 90. 78% , and zinc grade and recovery of 32.43% and 36. 60% , zinc concentrate with zinc grade of 56. 91%, recovery of 61.41%, total lead and zinc recovery of 90. 78% and 98.01% was achieved.