兰坪某难选氧化铅锌矿浮选试验研究

Experimental Study on Flotation of a Refractory Lead-Zinc Oxide Ore in Lanping

针对兰坪某氧化铅锌矿石含泥量高、氧化率高、易泥化等特点,进行了选矿试验研究,试验采用水玻璃与G-1组合为矿泥分散与抑制剂、硫化钠为铅浮选硫化剂及锌浮选pH调整剂、CF-35A与丁基黄药组合为氧化铅物捕收剂、N-4为氧化锌矿物捕收剂,可实现氧化铅锌矿全泥浮选,工艺简单,分选指标较好。闭路试验指标为:铅精矿品位为45.23%,铅回收率为80.27%;锌精矿品位为32.32%,锌回收率为85.06%。

According to the characteristics of a lead-zinc oxide ore in Lanping,such as high slime content,high oxidation rate and easy sliming,the mineral processing experiment was carried out.The experiment adopted the combination of sodium silicate and G-1 as slime dispersion and inhibitor,sodium sulfide as the lead flotation vulcanizing agent and zinc flotation pH regulator,CF-35A and butyl xanthate as lead oxide collector,and N-4 as zinc oxide mineral collector,which can realize the whole slime flotation of lead-zinc oxide ore.The process is simple and the separation index is good.The closed-circuit test indicators are:the grade of lead concentrate is 45.23%,and the lead recovery rate is 80.27%;the grade of zinc concentrate is 32.32%,and the zinc recovery rate is 85.06%.