某高碳铅锌银多金属硫化矿浮选试验研究

针对高碳铅锌银多金属硫化矿难选的问题,对某高碳硫化矿进行了试验研究。该矿中铅品位3.72%,锌品位8.34%,银品位34.13 g/t。通过流程探索,确定了预先脱碳—铅锌优先浮选工艺流程。在此基础上进行了条件试验研究,确定适宜磨矿细度为-0.074 mm占90%。确定最佳药剂制度为:铅浮选Zn SO4+Na2SO3用量为2000 g/t,捕收剂乙硫氮用量为80 g/t,锌浮选硫酸铜用量为800 g/t,丁基黄药用量为100 g/t。经闭路流程试验,得到最终指标为:铅精矿品位52.14%,回收率为88.54%,伴生银的品位为368.50 g/t,回收率68.04%,锌精矿品位60.23%,回收率为90.16%。

The flotation experiment study of high carbon polymetallic sulphide ore of lead zinc and silver

In view of the high carbon polymetallic sulphide ore of lead zinc and silver is difficult to flotation; the large experiment study was done. The grade of Lead is 3.72%, the grade of Zinc is 8.34%, and the silver grade is 34.13g/t. Through the process exploration experiment, the decarbonization and selective flotation flowsheet of Pb-Zn was determined. The appropriate grinding fineness is -0.074mm 90% by the condition test experiment. The reagent systems of Lead were the ZnSO4 Na2SO3 dosage 2000g/t, the combined collector of ethyl thio carbamate and ammonium butyl aerofloat (80, 50) g/t. The reagent systems of Zinc were the copper sulfate dosage 800g/t, the butyl xanthate dosage 100g/t. Through the closed circuit process, the grade of Pb is 52.14% and the recovery is 88.54%, the associated silver grade is 368.50g/t and the recovery is 68.04% in the Lead concentrate. The grade of Zn is 60.23% and the recovery is 90.16% in the Zinc concentrate.