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金属矿山 ›› 2008, Vol. 38 ›› Issue (09): 100-103.

• 机电与自动化 • 上一篇    下一篇

用搅拌磨湿法超细磨得金精矿的氰化浸出工艺研究

董颖博,林海   

  1. 北京科技大学
  • 收稿日期:2008-07-11 出版日期:2008-09-15 发布日期:2011-07-14

Investigation on Cyanide Leaching Process for Gold Concentrate Ultra-finely Ground with Stirring Mill

Dong Yingbo,Lin Hai   

  1. University of Science and Technology Beijing
  • Received:2008-07-11 Online:2008-09-15 Published:2011-07-14

摘要: 研究了搅拌磨湿法超细磨得金精矿(-20μm>97%)的氰化浸出工艺,探讨了影响金精矿氰化浸出的因素,并与常规滚动式球磨机湿法磨得金精矿氰化浸出指标进行对比。结果表明,通过优化氰化浸出各种因素,可大大缩短氰化浸出时间,氰化钠和碱石灰用量分别降低了1 kg/t、1.47 kg/t,金的浸出率提高了0.49个百分点,浸渣含金量降低了0.21 g/t,效果显著。

关键词: 搅拌磨, 金精矿, 氰化浸出

Abstract: The paper studies the cyanide leaching process for gold concentrate(-20 μm>97% )ultra-finely ground by wet stirring mill grinding method,discusses the factors influencing the cyanide leaching of gold concentrate and compares its cyanide leaching indexes with those of the gold concentrate ground by conventional wet tumbling ball mill grinding method. The results indicate that the optimization of the factors of sodium  cyanide leaching can greatly shorten the cyanide leaching time,reduce the dosage of sodium cyanide and lime by 1 kg/t and 1.47 kg/t respectively, improve the gold leaching rate by 0.49 percentage point and reduce the gold content in the leaching residue by 0.21 g/t. The optimization effects are very obvious.

Key words: Stirring mill, Gold concentrate, Cyanide leaching