某微细粒含碳高硫铅锌矿选矿试验研究

某铅锌矿含铅7.41％、锌13.70％、硫31.25％、碳1.45％,铅锌矿物嵌布粒度微细,属微细粒高硫含碳难选硫化铅锌矿.根据矿石性质,采用"脱碳—铅锌依次优先浮选—铅锌粗精矿再磨精选"工艺流程考察了碳粗选磨矿细度、铅锌粗精矿再磨细度和铅锌浮选药剂制度对选别指标的影响.结果表明,以BK9032为方铅矿捕收剂,以硫酸锌...

Experimental Study on Flotation of a Fine-grained Carbon-containing High-sulfur Lead-Zinc Ore

A lead-zinc mine is a fine-grained high-sulfur carbon-containing lead-zinc ore with the content of 7.41% Pb, 13.70% Zn, 31.25% sulfur, and 1.45% carbon. Based on the characteristics of the lead-zinc ore, the "decarburization- selective flotation of Pb and Zn-regrind and fine-dressing is adopted in this paper, and the influence of grinding fineness of carbon roughing, regrinding fineness of lead zinc rougher concentrate and flotation reagent are investigated. The result show that with the carbon coarse grinding fineness of -0.074mm accounting for 98%, BK9032 used as flotation collector for galena, ZnSO₄+Na₂SO₃ used as combined depressant for lead cleaning, lime used as pyrite depressant and pH regulator, butyl xanthate used as flotation collector for sphalerite, a Lead concentrate of 57.91% Pb with recovery of 85.24% and a zinc concentrate of 53.44% Zn with recovery of 86.17% are obtained, respectively.