某铜矿尾矿再选粗精矿选铜试验研究  

Study on copper recovery of rough concentrate re-separated from tailings of a copper mine

作　　者：康倩[1] 华亚南 张慧婷[1] 何桂春[1] 

机构地区：[1]江西理工大学资源与环境工程学院,江西赣州341000

出　　处：《矿山机械》2016年第5期53-57,共5页Mining & Processing Equipment

基　　金：国家自然科学基金项目(51364013)

摘　　要：试验所用矿样为某铜矿尾矿再选后的铜精矿,主要回收的目的矿物为黄铜矿,黄铜矿以中粒-细粒嵌布为主,除极细级别存在单体外,皆与粗粒脉石构成贫连生体。通过分级再磨的方法防止过细粒级铜的损失;通过添加分散剂水玻璃的方法来改善浮选环境;通过条件试验,最后确定了分级再磨、一粗、两精、两扫的闭路工艺流程。经闭路试验可得到Cu品位为16.35%,回收率为70.98%的精矿。The rough concentrate re-separated from tailings of a copper mine was taken as the test sample, and target recovery mineral was chalcopyrite. Chalcopyrite presented as medium grain and fine grain. Except that monomer existed in extra-fine grain, chalcopyrite was associated with coarse gangue to form poor coenobium. In the test, classification and regrinding were carried out to prevent the loss of extra-fine copper, and the dispersant of sodium silicate was added to improve the flotation environment. After conditional test, the closed-circuit process including classification, regrinding, one roughing, two concentrating and two scavenging was determined. Finally, the copper concentrate with copper grade of 16.35% and recovery of 70.98% was obtained after closed-circuit process.

关 键 词：尾矿 黄铜矿 分级磨矿 浮选 

分 类 号：TD926.4[矿业工程—选矿] TD923