新型无毒有机抑制剂在广西某多金属硫化矿浮选中的试验研究

Experimental Study on New Non-toxic Organic Depressant on Flotation of Polymetallic Sulfide Ore in a Mine of Guangxi

广西某多金属硫化矿铜铅嵌布粒度细,铅锌品位低,矿石性质复杂。采用铜铅混浮磨矿再分离—铜铅尾矿再浮锌的工艺流程,将自主研发的新型无毒环保有机抑制剂FY09和FY12,分别应用于铜铅混浮精矿抑铅浮铜,铜铅尾矿抑硫浮锌,选别效果较好。闭路试验得到:铜精矿铜品位26.19%、铜回收率88.20%,银品位748.65g/t、银回收率70.53%;铅精矿铅品位55.27%、铅回收率72.16%,银品位1527.43g/t、银回收率18.66%;锌精矿锌品位45.44%、锌回收率84.75%。铜、铅、锌、银有价金属得到有效回收。

A polymetallic sulfide ore in Guangxi exists various problems, including fine dissemination size of copper and lead, low grade of lead and zinc and complex ore properties. The combination technical process of copper-lead bulk flotation and then grind-separation with zinc flotation from copper-lead tailing was adopted. Good test index can be obtained by adopting flow process, using new non-toxic organic depressant FY09 to depress lead and dress copper in copper-lead mixed concentrate, as well as FY12 to depress sulfur and dress zinc from copper-lead tailing. The results of closed-circuit test showed that the copper grade of copper concentrate was 26.19% , its recovery rate was 88.20% ,the silver grade was 748.65 g/t and its recovery rate was 70.53%. Else, the lead grade of lead concentrate was 55.27% , its recovery rate was 72.16% ,the silver grade was 1527.43 g/t and its recovery rate was 18.66%. And the zinc grade of zinc concentrate was 45.44% and its recovery rate was 84.75%. Consequently, the valuable metals including copper, lead, zinc and silver were effectively recycled.