内蒙古某含碳高硫锌锡矿石选矿试验研究
Experimental Study on Separation of a Zinc-tin Ore Containing Carbon and High-sulfur in Inner Mongolia
张锦仙 1吕超 2杨林2
作者信息
- 1. 昆明有色冶金设计研究院股份公司,云南 昆明 653030
- 2. 昆明冶金研究院有限公司,云南 昆明 650031;云南省选冶新技术重点实验室,云南 昆明 650031
- 折叠
摘要
内蒙古某含碳高硫锌锡矿石锌品位1.02%、锡品位0.86%,硫和碳含量分别为14.02%、1.68%.矿石矿物组成较复杂,主要有用矿物为闪锌矿、锡石和黄铁矿,脉石矿物主要为石英、绿泥石和绢云母等.为确定矿石合理的开发利用工艺,采用预先脱碳—浮重联合工艺流程开展选矿试验研究.结果表明,矿石经预先脱碳、1 粗 1 扫 1 精锌硫混选、1 粗 1 扫 3 精锌硫分离浮选流程处理,闭路试验可得到Zn品位为 45.16%、Zn回收率为 71.19%的锌精矿,S品位为 46.92%、S回收率 81.91%的硫精矿;浮选尾矿采用摇床重选,经粗选、精选、复选和中矿再选,可获得Sn品位45.52%、Sn回收率 81.99%的锡精矿,以及Sn品位 3.13%、Sn回收率 11.09%的锡中矿.所设计试验流程较好地解决了矿石中有机碳对浮选的不利影响,综合回收了有价矿物,可为同类矿石的开发利用提供理论借鉴.
Abstract
The zinc and tin grade of a carbon-containing high-sulfur zinc tin ore in Inner Mongolia are 1.02%and 0.86%,and the content of sulfur and carbon are 14.02%and 1.68%,respectively.The mineral composition of the ore is more complex.The main useful minerals are sphalerite,cassiterite and pyrite,and the gangue minerals are mainly quartz,chlorite and sericite.In order to determine the rational development and utilization technology of ore,the beneficiation experiment was car-ried out by the pre-decarburization and flotation-gravity combined process.The results showed that zinc concentrates with Zn grade of 45.16%and Zn recovery rate of 71.19%and sulfur concentrates with S grade of 46.92%and S recovery rate of 81.91%could be obtained through pre-decarbonization,mixing flotation of one roughing,one scavenging and one cleaning for zinc and sulfur,and separation and flotation of one roughing,one scavenging and three cleaning for zinc and sulfur.The flotation tailings are reselected by shaking table,and after rough selection,cleaning selection,check and middling reselection,the tin concentrate with Sn grade of 45.52%and Sn recovery rate of 81.99%,and the tin rich middling ore with Sn grade of 3.13%and Sn recovery rate of 11.09%could be obtained.The designed test process solves the adverse effect of organic carbon in ore on flotation,recovers valuable minerals comprehensively,and can provide theoretical reference for the development and utiliza-tion of similar ores.
关键词
含碳/高硫/锌硫混选/锡石/摇床Key words
containing carbon/high sulfur content/zinc-sulfur mixing flotation/cassiterite/shaker table引用本文复制引用
基金项目
云南省重大专项(202302AB080010)
出版年
2024
NETL
NSTL
万方数据