Bacterial leaching of nickel-bearing pyrrhotite
文献类型：期刊论文
| 作者 | Ke, Jiajun; Li, Hongmei |
| 刊名 | HYDROMETALLURGY
 |
| 出版日期 | 2006-08-01 |
| 卷号 | 82期号:3-4页码:172-175 |
| 关键词 | bio-hydrometallurgy bacterial leaching nickel-bearing pyrrhotite Acidithiobacilus ferrooxidans |
| ISSN号 | 0304-386X |
| 其他题名 | Hydrometallurgy |
| 中文摘要 | The bioleaching of high-magnesium Jinchuan nickel-bearing pyrrhotite using Acidithiobacilus ferrooxidans was investigated. The experimental results show that the bioleaching time can be reduced from 16 days to 10 days by sulphuric acid pretreatment of the nickel-bearing pyrrhotite and by using ore-adapted A. ferrooxidans. At pH 2.0, 30 degrees C, pulp density 5% (wt./vol.), cell transfer quantity 10% and rotary shaker at 180 min(-1), the leaching of Ni was 88%, Co 78%, Cu 45% and Mg similar to 50%. The leaching of Cu was poor due to chalcopyrite, which exhibited slower leaching rate by bacteria. Mg was dissolved from magnesium-containing gangue minerals by acid and its dissolution was related to the acid concentration of leaching liquor. Mineralogical examination indicated that the relative order of leaching for the sulphide minerals by A. ferrooxidans was nickel-bearing pyrrhotite > pentlandite > chalcopyrite and the relative order of dissolution for the gangue minerals by acid pretreatment was chlorite > antigonite > olivine > tremolite and talc. (C) 2006 Elsevier B.V. All rights reserved. |
| 英文摘要 | The bioleaching of high-magnesium Jinchuan nickel-bearing pyrrhotite using Acidithiobacilus ferrooxidans was investigated. The experimental results show that the bioleaching time can be reduced from 16 days to 10 days by sulphuric acid pretreatment of the nickel-bearing pyrrhotite and by using ore-adapted A. ferrooxidans. At pH 2.0, 30 degrees C, pulp density 5% (wt./vol.), cell transfer quantity 10% and rotary shaker at 180 min(-1), the leaching of Ni was 88%, Co 78%, Cu 45% and Mg similar to 50%. The leaching of Cu was poor due to chalcopyrite, which exhibited slower leaching rate by bacteria. Mg was dissolved from magnesium-containing gangue minerals by acid and its dissolution was related to the acid concentration of leaching liquor. Mineralogical examination indicated that the relative order of leaching for the sulphide minerals by A. ferrooxidans was nickel-bearing pyrrhotite > pentlandite > chalcopyrite and the relative order of dissolution for the gangue minerals by acid pretreatment was chlorite > antigonite > olivine > tremolite and talc. (C) 2006 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | THIOBACILLUS-FERROOXIDANS ; BIOHYDROMETALLURGY ; GROWTH ; FUTURE ; MG2+ ; NI2+ |
| 收录类别 | ISTP ; SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000240275900011 |
| 公开日期 | 2013-10-24 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/3931]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ke, Jiajun,Li, Hongmei. Bacterial leaching of nickel-bearing pyrrhotite[J]. HYDROMETALLURGY,2006,82(3-4):172-175. |
| APA | Ke, Jiajun,&Li, Hongmei.(2006).Bacterial leaching of nickel-bearing pyrrhotite.HYDROMETALLURGY,82(3-4),172-175. |
| MLA | Ke, Jiajun,et al."Bacterial leaching of nickel-bearing pyrrhotite".HYDROMETALLURGY 82.3-4(2006):172-175. |
入库方式： OAI收割
来源：过程工程研究所
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