东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2008, Vol. 29 ›› Issue (12): 1746-1749.DOI: -

• 论著 • 上一篇    下一篇

铜镍尾矿细菌浸出的试验研究

俞娟;杨洪英;佟琳琳;陈森;   

  1. 东北大学材料与冶金学院;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2008-12-15 发布日期:2013-06-22
  • 通讯作者: Yu, J.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(5067402950274024);;国家高技术研究发展计划项目(2006AA06Z127);;教育部高等学校博士学科点专项科研基金资助项目(20060145015);;辽宁省自然科学基金资助项目(20052030)

Experimental investigation on bio-leaching Cu-Ni ore tailings

Yu, Juan (1); Yang, Hong-Ying (1); Tong, Lin-Lin (1); Chen, Sen (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2008-12-15 Published:2013-06-22
  • Contact: Yu, J.
  • About author:-
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摘要： 通过正交试验研究了pH值、矿浆质量分数、矿石粒度、细菌接种量、表面活性剂吐温20用量对铜镍矿尾矿细菌浸出的影响.试验结果表明,铜浸出的最佳条件:pH值为1.5,矿石粒度为小于0.074 mm,接种量(体积分数)为50%以及不添加表面活性剂;镍浸出的最佳条件:pH值为1.0,矿石粒度为大于0.147mm,接种量(体积分数)为25%及不添加表面活性剂.细菌氧化后,铜和镍的浸出率分别达到63.41%和91.74%.

关键词: 尾矿, 铜镍矿, 细菌浸出, 浸出率, 铜, 镍, 正交试验

Abstract: The effects of pH value, mass fraction of pulp, ore particle size, inoculation concentration and dose of the surfactant Tween 20 on the bio-leaching rates of copper and nickel in Cu-Ni ore tailings were investigated through orthogonal test. The experimental results showed that the optimum conditions for copper extraction by bio-oxidation of Cu-Ni ore tailings are pH value 1.5, particle size less than 0.074 mm, inoculation concentration 50%, with no use of the surfactant Tween 20. And the optimum conditions for nickel extraction are pH value 1.0, particle size bigger than 0.147 mm, inoculation concentration 25%, with no use of the surfactant Tween 20. The copper and nickel leaching rates are thus up to 63.41% and 91.74%, respectively, after bio-oxidation.

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