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金属矿山 ›› 2014, Vol. 43 ›› Issue (11): 80-83.

• 矿物工程 • 上一篇    下一篇

以石灰为调整剂浮选贵州某卡林型金矿石

陈水波,赖伟强,林鸿汉,冯金妮   

  1. 紫金矿业集团厦门紫金矿冶技术有限公司,福建 厦门 361101
  • 出版日期:2014-11-15 发布日期:2015-05-21

Flotation of Carlin Type Gold Ore from Guizhou with Lime as Regulator

Chen Shuibo,Lai Weiqiang,Lin Honghan,Feng Jinni   

  1. Zijin Mining Group Xiamen Zijin Mining and Metallurgy Technology Co.,Ltd.,Xiamen 361101,China
  • Online:2014-11-15 Published:2015-05-21

摘要: 贵州某卡林型低品位难处理金矿石中的金呈微细粒浸染状嵌布,主要赋存在黄铁矿等硫化矿物中,或以单体金形式存在,这些易回收金占总金的81.34%;碳酸盐及硅酸盐中的金占总金的18.66%。为了高效开发利用该金矿石,以石灰为浮选矿浆调整剂,进行了浮选选金试验。结果表明,在磨矿细度为-0.074 mm占96%的情况下,采用1粗3精3扫、精选中矿集中1粗1精2扫单独再选、其余中矿顺序返回流程处理,最终获得了金品位为9.41 g/t、金回收率为86.45%的金精矿。

关键词: 卡林型金矿, 黄铁矿, 调整剂, 石灰, 浮选

Abstract: The gold in a low grade and refractory gold ore of Guizhou is fine disseminated and mainly occurs in sulfide minerals like pyrite,or occurs as monomer gold.The monomer gold account for 81.34% of total gold,and gold in carbonate and silicate occupies 18.66% of total gold.In order to efficiently develop and utilize this gold ore,experiment of gold flotation was conducted with lime as pulp regulator.The results showed that at the grinding fineness of 96% -0.074 mm,gold concentrate with gold grade of 9.41 g/t and recovery of 86.45% was obtained by adopting the process of one roughing-three cleaning-three scavenging,middles from cleaning collected and processed by one roughing-one cleaning-two scavenging process,and other middles back to the flow-sheet in turn.

Key words: Carlin type gold mine, Pyrite, Regulator, Lime, Flotation