| 细菌浸出磁黄铁矿机制的研究 |
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| 引用本文： | 李洪枚,柯家骏.细菌浸出磁黄铁矿机制的研究[J].稀有金属,2005,29(6):880-884. |
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| 作者姓名： | 李洪枚 柯家骏 |
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| 作者单位： | 1. 首都经济贸易大学安全工程系,北京,100026
2. 中国科学院过程工程研究所,北京,100080 |
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| 基金项目： | 国家重点自然基金项目资助（59834150） |
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| 摘 要： | 为配合从金川含镍磁黄铁矿中细菌氧化浸出提取镍的新工艺开发，研究了用氧化亚铁硫杆菌（At．f．）氧化浸出磁黄铁矿的机理研究。实验结果表明，细菌浸出磁黄铁矿过程是以间接反应为主，即细菌将溶液中Fe^2＋氧化成Fe^3＋，然后Fe^3＋进一步氧化磁黄铁矿。细菌附着于矿物表面与反应生成的单质硫进行反应对磁黄铁矿的浸出也具有重要贡献。细菌的适应能力和活性是影响细菌浸出磁黄铁矿的重要因素。
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| 关 键 词： | 氧化亚铁硫杆菌（At．f．） 细菌浸出 磁黄铁矿 机制 |
| 文章编号： | 0258-7076（2005）06-0880-05 |
| 收稿时间： | 2005-04-12 |
| 修稿时间： | 2005-04-122005-06-10 |
Mechanism of Leaching Pyrrhotite by Acidithiobacillus Ferroxidans |
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| Li Hongmei,Ke Jiajun.Mechanism of Leaching Pyrrhotite by Acidithiobacillus Ferroxidans[J].Chinese Journal of Rare Metals,2005,29(6):880-884. |
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| Authors: | Li Hongmei Ke Jiajun |
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| Affiliation: | 1. Department of Safety Engineering, Capital University of Economics and Business, Beijng 100026, China; 2. Institute of Process Engineering, Chinese Academy of Sciences, Beijng 100086, China |
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| Abstract: | The mechanism of leaching pyrrhotite by Acidithiobacillus ferroxidans(At.f.) was investigated in this paper in order to build up a new process for the bacterial leaching of nickel-bearing pyrrhotite from Jing Chuan Corp.,in China.Experimental results show that indirect oxidization of pyrrhotite dominats the leaching process,that is,Fe~(2+) is oxidized to Fe~(3+) by Acidithiobacillus ferroxidans,and then Fe~(3+) reacts with pyrrhotite.Acidithiobacillus ferroxidans adhered on the surface of pyrrhotite can oxidize sulfur produced during the reaction of Fe~(3+) with pyrrhotite,which make a great contribution to decomposition of pyrrhotite.The adaptivity and activity of bacterial are important factors in bacterial leaching of pyrrhotite. |
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| Keywords: | acidithiobacillus ferroxidans(At f ) bacterial leaching pyrrhotite mechanism |
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