湖南某辉锑矿石无铅活化浮选试验

摘要

针对传统选锑活化剂硝酸铅所存在的诸多问题,对锑品位为3.18％、硫化锑占总锑的95.60％的湖南某锑矿石进行了无铅活化浮选试验.结果显示,矿石在磨矿细度为-74 μm占89.30％的情况下,以硫酸铜+硫酸铁+硫酸亚铁(质量配合比为1∶1∶1)为活化剂,以丁基黄药+MA-1(质量配合比为2∶3)为捕收剂,采用1粗3精2扫、中矿顺序返回流程处理,获得了锑品位为46.15％、回收率为95.04％的锑精矿,表明硫酸铜+硫酸铁+硫酸亚铁是辉锑矿浮选的良好无铅活化剂.%In view of the shortcomings of traditional antimony selective activator lead nitrate,antimony ore was tested by lead-free activated flotation with an antimony content of 3.18％ and an antimony sulfide content of 95.60％ of the total antimony ore in Hunan province.The tests results indicated that under conditions of ore in the grinding fineness of-74 μm accounted for 89.30％,good beneficiation indexes were obtained with stibnite concentrate grade of 46.15％ Sb and recovery of 95.04％ with copper sulfate,ferric sulfate and ferrous sulfate (mass mixing ratio is 1 ∶ 1 ∶ 1) as the activator,with butyl xanthate+MA -1 (quality mixture ratio of 2 ∶ 3) as the collector,and by a closed-circuit flotation with one roughing,two stages of scavenging and three stages of cleaning.The experimental results showed that copper sulfate + ferrous sulfate + ferrous sulfate is a good lead-free activator for flotation of stibnite ore.