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。
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.
作者
张锦仙
吕超
杨林
ZHANG Jinxian;LÜChao;YANG Lin(Kunming Engineering&Research Institute of Nonferrous Metallurgy Co.,Ltd.,Kunming 653030,China;Kunming Metallurgy Institute Co.,Ltd.,Kunming 650031,China;Yunnan Key Laboratory for New Technology of Beneficiation Metallurgy,Kunming 650031,China)
出处
《金属矿山》
CAS
北大核心
2024年第3期99-104,共6页
Metal Mine
基金
云南省重大专项(编号:202302AB080010)。
关键词
含碳
高硫
锌硫混选
锡石
摇床
containing carbon
high sulfur content
zinc-sulfur mixing flotation
cassiterite
shaker table
作者简介
张锦仙(1985-),女,高级工程师;通信作者:吕超(1991-),男,工程师,硕士。
