低品位铅尾矿中银综合回收试验研究  

A TEST STUDY ON RECOVERY OF SLIVER FROM LOW-GRADE LEAD TAILINGS

作　　者：杨波[1,2] 张艮林[1] 童雄[3,2] 谢贤[3,2] 

机构地区：[1]云南大学工程技术研究院,昆明650091 [2]云南省金属矿尾矿二次利用工程研究中心,昆明650093 [3]昆明理工大学国土资源工程学院,昆明650093

出　　处：《矿冶》2014年第4期16-19,共4页Mining And Metallurgy

基　　金：云南省自然科学基金项目(2010CD019)

摘　　要：针对尾矿中有价矿物品位低、嵌布粒度细和难以高效活化的特点,对含银15.47 g/t,铅、硫含量分别为0.62%、1.75%的铅尾矿进行了选矿试验研究。通过不同选矿工艺对比,确定浮选流程较适合于该尾矿中银的回收。在较简单的药剂制度下,通过"一次粗选、三次精选、两次扫选"的闭路试验流程可获得银品位和回收率分别为137.09 g/t、55.27%的银精矿,其中含铅5.85%,铅回收率为60.35%,实现了对该尾矿资源的二次利用。The valuable minerals in the tailings from Yunnan province are mainly Ag-bearing minerals, the grade of Ag is 85.47 g/t, other valuable elements are Pb and S, which assayed 0.62% and 1.75% respectively. Several different recovery processes for Ag are compared and the results indicate that flotation processes is favoarable for the Ag-recovery. A silver concentrate can be obtained by one roughing,two scavengings and three cleanings. The grades of Ag and Pb in the concentrate are 137.09 g/t and 5.85% respectively, the corresponding recoveries are 55.27% and 60.35%. The reutlization of the tailing resources is achieved by the recovery of Ag and Pb.

关 键 词：铅尾矿 浮选 银回收 综合利用 

分 类 号：TD926.42[矿业工程—选矿]