柴山铅锌矿石旋流-静态微泡柱浮选试验研究

Experimental Study on Beneficiation of Chaishan Lead-Zinc Ore by Cyclonic-Static Microbubble Flotation Column

为进一步提高柿竹园柴山铅锌矿对现有资源的利用水平,以半工业型旋流-静态微泡浮选柱为分选设备,采用一段闭路磨矿(细度-0.074mm含77%)、一粗一精优先浮铅、一粗一精再浮锌的工艺流程对柴山铅锌矿石进行了半工业选矿试验,获得了铅品位为62.79%、铅回收率为89.81%的铅精矿和锌品位为52.24%、锌回收率为90.46%的锌精矿,同采用浮选机生产的现场相比,不仅对其二粗三精二扫优先浮铅、一粗三精三扫再浮锌的工艺流程进行了简化,而且使铅精矿铅品位和铅回收率分别提高12.58和0.88个百分点、锌精矿锌品位和锌回收率分别提高1.98和8.95个百分点。

To further improve the utilization level of the existing resource of Shizhuyuan Chaishao Lead-Zinc Mine, pilot test was made on its lead-zinc ore by adopting a process consisting of one-stage closed-circuit grinding （ a grind of 77% -O. 074mm）, preferential flotation of lead by one roughing and one cleaning and then zinc flotation of also one roughing and one cleaning, with pilot cyclonic-static microbubble flotation columns. As a result, a lead concentrate grading 62.79% at lead recovery of 89.81% and a zinc concentrate grading 52.24% at a zince recovery of 90.46% were obtained. In this way, not only the original process consisting two roughings-three cleanings-two scavengings for lead preferential flotation and one roughlng-three cleanings-three scavengings for zinc flotation was simpliefied but the lead concentrate grade and recovery were improved by 12.58 and O. 88 percentage points respectively, and the zince concentrate grade and recovery by 1.98 and 8.95percentage points respectively.