| Acid equilibrium during bioleaching of alkaline low-grade sulfide copper ore |
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| 作者姓名： | WEN Jiankang RUAN Renman YAO Guocheng SONG Yongsheng |
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| 作者单位： | General Research Institute for Nonferrous Metals, Beijing 100088, China |
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| 摘 要： | This article reports the study on acid equilibrium during bioleaching of alkaline low-grade copper sulfide ore. Adding auxiliary agents 1# （sulfur） and 2# （pyrite） makes bacterial leaching of copper and acid production carried out simultaneously because the auxiliary agents can be oxidized by bacteria and the oxidation products involve acid. The acid required for dissolving alkaline gangue during bacterial leaching is produced, and acid equilibrium is reached during the ore bio-leaching. The recovery of copper reaches more than 95%.
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| 关 键 词： | 酸平衡 生物浸取 铜矿 碱性 金属学 |
| 收稿时间： | 2005-12-10 |
Acid equilibrium during bioleaching of alkaline low-grade sulfide copper ore |
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| WEN Jiankang RUAN Renman YAO Guocheng SONG Yongsheng.Acid equilibrium during bioleaching of alkaline low-grade sulfide copper ore[J].Rare Metals,2006,25(6):680-686. |
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| Authors: | WEN Jiankang RUAN Renman YAO Guocheng SONG Yongsheng |
| |
| Affiliation: | General Research Institute for Nonferrous Metals, Beijing 100088, China |
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| Abstract: | This article reports the study on acid equilibrium during bioleaching of alkaline low-grade copper sulfide ore. Adding auxiliary agents 1# (sulfur) and 2# (pyrite) makes bacterial leaching of copper and acid production carried out si- multaneously because the auxiliary agents can be oxidized by bacteria and the oxidation products involve acid. The acid required for dissolving alkaline gangue during bacterial leaching is produced, and acid equilibrium is reached during the ore bio-leaching. The recovery of copper reaches more than 95%. |
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| Keywords: | bioleaching alkaline low-grade copper sulfide ore acid equilibrium process mineralogy auxiliary agent |
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