某氧化铅锌尾矿浮选工艺试验研究

Experimental study on flotation process of lead-zinc oxide tailings

针对某铅锌尾矿嵌布粒度细、氧化程度高、泥化严重的问题,进行了一系列浮选试验研究。采用硫化混合浮选的工艺流程,经过一粗五精三扫浮选,在磨矿细度-0.074 mm含量占95%条件下,选取最优参数进行闭路实验,最终获得铅品位15.05%、回收率为34.31%,锌品位39.23%、回收率为49.82%的铅锌混合精矿。

A series of flotation test were carried out on the lead and zinc tailings with fine particle size,high oxidation and serious modification.When the grinding fineness of-0.074 mm accounts for 95%,the optimal parameters are selected for two roughing,four cleanings and three scavenging closed-circuit sulfide-mixed flotation experiment.The mixed lead and zinc concentrate with lead grade of 15.05%,zinc grade of 39.23%,lead recovery of 34.31%and zinc recovery of 49.82%was obtained.