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金属矿山 ›› 2013, Vol. 42 ›› Issue (01): 80-82.

• 矿物工程 • 上一篇    下一篇

某氧化型金矿石氰化浸出试验

王伟之1,2,韩苗苗2   

  1. 1.河北联合大学矿业工程学院;2.河北省矿业开发与安全技术实验室
  • 出版日期:2013-01-15 发布日期:2013-01-23

Experimental Research on Cyanide Leaching of an Oxidized Gold Ore

Wang Weizhi1,2,Han Miaomiao2   

  1. 1. College of Mining Engineering,Hebei United University;2. Hebei Provincial Key Lab of Mining Development and Safety Technology
  • Online:2013-01-15 Published:2013-01-23

摘要: 某氧化型金矿石金含量高达7.76 g/t,但浮选工艺回收效果极不理想。采用分段浸出工艺对磨矿细度、氰化钠用量、浸出时间等重要工艺技术条件进行了研究,还对影响金浸出的铜离子进行了预处理研究。结果表明,浸前氨水预处理有利于削弱铜对金浸出的负面影响,在试验确定的最佳工艺技术条件下,金浸出率达到了90.11%,达到了工业生产要求。

关键词: 氧化金矿, 氰化浸出, 分段浸出, 氨水预处理

Abstract: An oxidized gold ore contains gold up to 7.76 g/t,but the gold recovery is highly undesirable by adopting the flotation process. Tests on the technical conditions of grinding fineness,sodium cyanide consumption,leaching time through segment leaching process are carried out,by which Cu ions that affects the gold leaching are pre-treated. The test results show that the ammonia pretreatment before leaching is conductive to weaken the negative impact of copper on gold leaching. Under the optimum conditions obtained from the above tests,gold leaching rate reaches 90.11%,which can meet the requirements of industrial production.

Key words: Oxide gold ore, Cyanide leaching, Segment leaching, Ammonia pretreatment