安徽某高砷含金硫精矿硫砷分离试验研究  

Study on Separation of Sulfur and Arsenic from a Gold-bearing High Arsenic Sulfur Concentrate

作　　者：赖伟强[1] LAI Weiqiang(ZIJIN Mining Group Co.,Ltd.)

机构地区：[1]紫金矿业集团股份有限公司,福建省龙岩市364200

出　　处：《现代矿业》2024年第6期176-178,共3页Modern Mining

摘　　要：针对安徽某含金硫精矿砷含量较高(达5.05%),无法销售的问题,进行了砷硫分离试验。结果表明,以活性炭为脱药剂,石灰为pH值调整剂,ZJY-7为抑制剂,丁基黄药为捕收剂,2^(#)油为起泡剂,优先浮选黄铁矿,浮选尾矿磨细至-0.074 mm占82.37%,经过1粗1扫磁选分离毒砂和磁黄铁矿,获得了可销售的含硫52.16%,含砷0.48%,含金1.86 g/t,硫回收率14.32%的硫精矿1,含硫35.81%,含砷0.63%,含金0.61g/t,硫回收率64.08%的硫铁精矿2和含砷16.46%,含金8.14 g/t,砷回收率91.25%,金回收率80.22%的含金砷精矿,合计硫回收率78.40%。试验结果可为同类矿山处理高砷含金硫精矿提供参考与借鉴。Aiming at the problems that the arsenic content of a gold-bearing sulfur concentrate in An⁃hui is too high(up to 5.05%)to be sold,an arsenic-sulfur separation test was carried out.The results show that pyrite is preferentially floated with activated carbon as de-reagent,lime as pH regulator,ZJY-7 as in⁃hibitor,butyl xanthate as collector and 2^(#)oil as foaming agent.The flotation tailings were ground to-0.074 mm accounting for 82.37%.After one roughing and one scavenging magnetic separation of arsenopyrite and pyrrhotite,a marketable sulfur concentrate with sulfur content of 52.16%,arsenic content of 0.48%,gold content of 1.86 g/t,sulfur recovery rate of 14.32%,sulfur and iron concentrate with sulfur content of 35.81%,arsenic content of 0.63%,gold content of 0.61 g/t,sulfur recovery rate of 64.08%,and goldbearing arsenic concentrate with arsenic content of 16.46%,gold content of 8.14 g/t,arsenic recovery rate of 91.25%,gold recovery rate of 80.22%,and total sulfur recovery rate of 78.40%were obtained.The test results can provide reference for the treatment of high arsenic gold-bearing sulfur concentrate in similar mines.

关 键 词：砷 硫 浮选 磁选 ZJY-7抑制剂 

分 类 号：TD951[矿业工程—选矿]