青海某选铁尾矿回收铜的浮选试验研究  

Experimental Study of Flotation for Copper Recovery from an Iron Ore Dressing Tailing in Qinghai Province

作　　者：鲁鹏[1] 苗梁 李振宇[2] LU Peng;MIAO Liang;LI Zhenyu(Baiyin Nonferrous Group Co.Ltd.,Baiyin 730900,China;Northwest Research Institute of Mining and Metallurgy,Baiyin 730900,China)

机构地区：[1]白银有色集团股份有限公司,甘肃白银730900 [2]西北矿冶研究院,甘肃白银730900

出　　处：《甘肃冶金》2024年第5期17-20,24,共5页Gansu Metallurgy

摘　　要：青海某选铁的尾矿含铜0.83%。在浮选过程中仅依赖一种捕收剂往往难以获得理想的浮选效果。因此将两种捕收剂结合使用,异戊基黄药+酯-112的组合显示出良好的效果。在磨矿细度-325目85%、异戊基黄药40 g/t和酯-11240 g/t、使用硫化钠作为选铁尾矿浮选铜的活化剂、使用六偏磷酸钠作为选铁尾矿浮选铜的分散剂的条件下,采用“两次粗选-两次精选-两次扫选”的工艺流程。闭路试验总的铜精矿Cu品位为22.56%,Cu回收率为76.88%。尾矿的Cu品位0.17%,闭路试验结果达到预期目标。The tailings of an iron processing in Qinghai contained 0.83%copper.Since the flotation effect of a single type of collector was not satisfactory,the combination of two collectors,isoamylxanthan+ester-112,showed good results.Under the conditions of grinding fineness-325 mesh 85%,isopentyl xanthan 40 g/t and ester-11240 g/t,using sodium sulfide as the activator of iron ore tailings flotation copper,and using sodium hexametaphosphate as the dispersant of iron ore tailings flotation copper,the process was carried out by the procedure of"two roughing-two selections-two sweeps".The grade of copper concentrate in the closed-circuit test was 22.56%,the copper recovery rate was 76.88%,and the copper grade content of the tailings in the closed-circuit test was 0.17%,and the flotation effect of copper recovery from iron ore dressing tailings was good.

关 键 词：选铁尾矿 组合捕收剂 六偏磷酸钠 异戊基黄药 酯-112 

分 类 号：TD923[矿业工程—选矿]