提高德兴铜矿高氧化率矿石铜金钼回收率的研究

对新型Mac-12 进行了普遍化微扰理论研究, 结果表明,Mac-12中反应中心硫原子给电子的能力较弱, 而接受反馈电子的能力很强, 其对提供反馈电子能力较弱的黄铁矿的捕收能力弱, 而对易提供反馈电子的黄铜矿的捕收能力强。工业试验结果表明,Mac-12对硫化铜矿物和氧化铜矿物具有强亲固能力, 与传统黄药工艺相比, Mac-12与少量丁黄药工艺混用可降低铜硫浮选分离中的石灰用量, 铜精矿中铜品位提高0.93个百分点, 铜回收率提高1.03 个百分点;金品位提高1.29 g/t, 金回收率提高7.16 个百分点;钼品位提高0.0293 个百分点, 钼回收率提高3.90个百分点。Mac-12已工业应用于德兴铜矿, 取得了较好的经济效益。

Study on Improving the Recoveries of Copper, Gold and Molybedennum in Copper Sulfide Ore with High Oxidation Ratio in Dexing Copper Mine

The study of the Generalized Perturbation Theory for the new-type collector(Mac-12) shows that the reactive center of Mac-12(i e,sulfur) has strong power in accepting feedback electrons and has limited ability of donating itself electrons.As a result,the collecting power of Mac-12 for chalcopyrite which has strong power of offering copper d-orbital electrons is strong and its selectivity against pyrite which has weak ability of donating iron d-orbital electrons is weak.The results from industrial tests show that Mac-12 is strongly solid-avid for copper sulfide and oxide minerals.Compared with traditional bulk flotation using collector of butyl xanthate,using Mac-12 plus butyl xanthate can decrease the amount of line in copper-sulfur separation,but increase copper grade and recovery by 0.93% and 1.03%.Gold grade and recovery are all increased by 1.29 g/t and 7.16%,and molybdenum grade and recovery increased by 0.0293% and 3.90% respectively in copper concentration.Now,Mac-12 has been applied in Dexing Copper Mine and has also brought good benefit to them.