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金属矿山 ›› 2017, Vol. 46 ›› Issue (05): 89-92.

• 矿物工程 • 上一篇    下一篇

贵州某低品位石英脉型金矿石选矿试验

梁远琴1,2,刘全军1,2,赵刘闯1,2,念家飞3   

  1. 1.复杂有色金属资源清洁利用国家重点试验室,云南 昆明 650093;2.昆明理工大学国土资源工程学院,云南 昆明 650093;3.云南方圆矿产资源再生综合利用研究院,云南 个旧 661000
  • 出版日期:2017-05-15 发布日期:2017-10-18
  • 基金资助:

    云南省应用基础研究计划重点项目(编号:2013FA009)。

Beneficiation Experiment on a Low-grade Quartz Vein Type Gold Ore in Guizhou

Liang Yuanqin1,2,Liu Quanjun1,2,Zhao Liuchuang1,2,Nian Jiafei3   

  1. 1.State Key Lab Complex Nonferrous Metal Resources Clean Utilization,Kuming 650093,China;2.Faculty of Land and Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China;3.Yunnan Fangyuan Institute of Mineral Resource Recycling & Comprehensive Utilization,Gejiu 661000,China
  • Online:2017-05-15 Published:2017-10-18

摘要: 贵州某石英脉型金矿石金含量为3.04 g/t,金属硫化物中的金和单体金是金存在的主要形式,金的产出形态有浑圆粒状、板片状和角粒状等,嵌布粒度微细。为了高效回收该矿石中的金,进行了选矿试验研究。结果表明:矿石在磨矿细度为-0.074 mm占55.6%情况下,采用尼尔森选矿机重选,获得了金品位为236.01 g/t、金回收率为26.39%的尼尔森重选金精矿;尼尔森重选尾矿再磨至-0.074 mm占80.44%后,采用1粗3精2扫、中矿顺序返回浮选流程处理,获得了金品位为41.37 g/t、金回收率为57.84%的浮选金精矿;总精矿金品位为55.78 g/t,金回收率为84.23%。

关键词: 石英脉型金矿石, 尼尔森离心选矿机, 重选, 浮选

Abstract: There is 3.04 g/t gold in a gold-bearing quartz vein-type gold ore from Guizhou,gold in sulfide minerals and monomer gold are main exist form of gold,round-granular,lamellar and granular are gold output forms,and fine disseminated.Beneficiation experiments were conducted to efficiently recover the gold.The results indicated that,at grinding fineness of 55.6% passing 0.074 mm,by Nielsen separator gravity separation,Nielsen gravity separation concentrate of gold grade 236.01 g/t and recovery rate 26.39% was obtained.Regrinding Nielsen centrifugal separator gravity tailings to 80.44% passing 0.074 mm,via one roughing-three cleaning-two scavenging and middlings back to the flow-sheet in turn process,gold flotation concentrate with gold grade and recovery of 41.37 g/t and 57.84% respectively,total concentrate with gold grade and recovery of 55.78 g/t and 84.23% respectively was obtained.

Key words: Quartz-vein type gold, Nielsen centrifugal separator, Gravity, Flotation