新疆某大型铁矿伴生金锌的综合回收试验研究  

Comprehensive Recovery of Gold and Zinc Associated with a Large Iron Ore in Xinjiang

作　　者：陈慧杰 蒋升国 王星 张莉 Chen Huijie;Jiang Shengguo;Wang Xing;Zhang Li(Minerals Experimental Institute of Xinjiang Uygur Autonomous Region, xinjiang, Urumqi,China)

机构地区：[1]新疆维吾尔自治区矿产试验研究所

出　　处：《矿产综合利用》2019年第4期50-54,共5页Multipurpose Utilization of Mineral Resources

摘　　要：为了综合回收新疆某大型铁矿伴生的有益元素金和锌,对具有代表性的矿石进行了矿石性质研究,查明了矿石中金矿物、锌矿物和铁矿物的赋存状态、嵌布粒度及它们与有益有害元素的共生关系。根据矿石性质,制定了优先浮选金矿物,金浮选尾矿经硫酸铜活化后浮选闪锌矿,锌浮选尾矿磁选铁的工艺流程。金浮选通过两段粗选两段精选获得金精矿金品位27.38×10-6,金回收率52.65%;锌浮选通过一段粗选两段扫选,锌粗精矿再磨至-0.037 mm 85%精选四段,获得锌精矿锌品位49.53%,锌回收率81.21%;锌浮选尾矿磁选回收铁,通过一段粗选一段精选,获得铁精矿铁品位65.55%,铁回收率84.71%。This paper is studying on the recovery of the beneficial elements gold and zinc in a large iron ore in Xinjiang. Based on the research of ore properties of representative sample, the occurrence state, the particle size, the symbiotic relationship between the gold minerals, zinc minerals and iron minerals in the ores have been identified, According to the ore properties, the process flow of mineral processing is determined: preferential flotation of gold minerals, gold flotation tailings activated by copper sulfate flotation of sphalerite, and zinc flotation tailings magnetic separation of iron, The gold concentrate is recovered by two roughing and two scavenging, the gold grade of concentrate is 27.38×10^-6, and the gold recovery rate is 52.65%. The zinc is separated through one roughing and two scavenging flotation, the zinc coarse concentrate is regrinded to -0.037 mm 85%, and then four cleaning, the zinc grade of concentrate is 49.53% and the recovery rate of zinc is 81.21%. Finally, the iron is obtained by Zinc flotation tailings magnetic separation, through one roughing and one cleaning, iron concentrate grade of iron concentrate 65.55%, iron recovery rate of 84.71%.

关 键 词：铁闪锌矿 磁黄铁矿 浮选 分离 

分 类 号：TD952[矿业工程—选矿]