云南某高硫铅锌矿浮选分离工艺研究

Study on Flotation Separation of High Sulfur Lead-zinc Ore from Yunnan

摘要: 对云南某高硫铅锌矿进行选矿实验研究。原矿铅品位2.98%、锌品位2.79%、银品位114.95 g/t，在磨矿细度为-0.074 mm 76.19%条件下，采用优先浮选工艺流程，以硫酸锌+碳酸钠作为组合抑制剂，以新型捕收剂HQ-Pb作为铅捕收剂，最终获得铅品位56.62%、银品位1915.38 g/t的铅精矿，铅回收率82.36%，银回收率73.44%；获得锌品位45.92%、银品位171.38 g/t的锌精矿，锌回收率82.29%，银回收率7.58%。

Abstract: Study on the mineral processing of a high sulfur lead-zinc ore in Yunnan Province were conducted. Grades of lead, zinc and silver were 2.98%, 2.79% and 114.95 g/t, respectively. Ore was ground to -0.074 mm 76.19% and under the condition of selective flotation process, the combined reagents ZnSO₄ and Na₂CO₃ used as the depressant and HQ-Pb and HQ-Zn were used as a novel galena and sphalerite collector. From the results of closed circuit tests, the lead concentrate, containing 56.62% Pb and 1915.38 g/t Ag, was produced, at recovery of 82.36% Pb and 73.44% Ag. And zinc concentrate of 45.92% Zn and 171.38 g/t Ag, was obtained, at recovery of 82.29% Zn and 7.58% Ag.