青海某低品位金矿石选矿试验研究  

Study of beneficiation test on a low-grade gold ore from Qinghai

作　　者：熊馨[1] 霸慧文 寇保德 应永朋 赵玉卿[1] Xiong Xin;Ba Huiwen;Kou Baode;Ying Yongpeng;Zhao Yuqing(Geology Ore Testing and Application Center of Qinghai Province;Museum of Natural Resources of Qinghai Province;Qinghai Geological Survey Institute)

机构地区：[1]青海省地质矿产测试应用中心 [2]青海省自然资源博物馆 [3]青海省地质调查院

出　　处：《黄金》2022年第5期68-71,共4页Gold

基　　金：青海省重点研发与转化计划项目(2019-SF-139);青海学者资助项目(青人社厅函〔2019〕48号)。

摘　　要：青海某砾岩型低品位金矿石金品位仅0.51 g/t,矿石氧化程度较高,金矿物主要为银金矿,且粒度微细。根据矿石性质,进行了浮选、摇床重选、尼尔森重选、全泥浸出4种工艺流程探索试验对比。结果表明:环保浸金剂全泥浸出工艺适宜处理该矿石;采用浮选、摇床重选、尼尔森重选工艺,金回收率较低,最高仅为10.72%。在最佳试验条件下,采用环保浸金剂全泥浸出工艺,可获得金浸出率80.94%的较好指标。The gold grade of a low-grade conglomerate gold ore from Qinghai is only 0.51 g/t,and the oxidation degree of the ore is high.The gold minerals in the ore are mainly electrum and the particle size is mirco-fine.According to the ore properties,4 kinds of flowsheets are explored and compared including flotation,table gravity separation,Nelson gravity separation,all-sliming leaching.The results showed that the all-sliming leaching with environmental gold leaching agent is suitable for the ore treatment;flotation,table gravity separation,Nelson gravity separation all have low gold recovery rate,the highest of which is 10.72%.Under the optimal experimental conditions,the gold leaching rate can be as good as 80.94% by all-sliming leaching with environmental gold leaching agent.

关 键 词：低品位金矿石 砾岩型金矿 环保浸金剂 浮选 重选 

分 类 号：TD953[矿业工程—选矿]