A kinetic study of the leaching of a low-grade niobium-tantalum ore by concentrated KOH solution
文献类型：期刊论文
| 作者 | Zhou, HM; Zheng, SL; Zhang, Y; Yi, DQ |
| 刊名 | HYDROMETALLURGY
 |
| 出版日期 | 2005-12-01 |
| 卷号 | 80期号:3页码:170-178 |
| 关键词 | clean process leaching kinetics KOH niobium-tantalum ore diffusion control |
| ISSN号 | 0304-386X |
| 英文摘要 | A kinetic study of the leaching of a low-grade niobium-tantalum ore by concentrated KOH solution under atmospheric pressure has been investigated. The effects of reaction temperature, KOH concentration, agitation speed, particle size and alkalito-ore mass ratio on the dissolution rate of niobium were examined. It was found that the dissolution rate of niobium is significantly influenced by the temperature, particle size and concentration of KOH solution. The experimental data were well interpreted with a shrinking core model under diffusion control through the product layer. By using the Arrhenius expression, the apparent activation energy for the dissolution of niobium was evaluated. Finally, on the basis of the shrinking core model, the following rate equation was established: |
| 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] | HYDROCHLORIC-ACID ; ILMENITE ORE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000234045500004 |
| 公开日期 | 2013-09-20 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/1581]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China 2.Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, HM,Zheng, SL,Zhang, Y,et al. A kinetic study of the leaching of a low-grade niobium-tantalum ore by concentrated KOH solution[J]. HYDROMETALLURGY,2005,80(3):170-178. |
| APA | Zhou, HM,Zheng, SL,Zhang, Y,&Yi, DQ.(2005).A kinetic study of the leaching of a low-grade niobium-tantalum ore by concentrated KOH solution.HYDROMETALLURGY,80(3),170-178. |
| MLA | Zhou, HM,et al."A kinetic study of the leaching of a low-grade niobium-tantalum ore by concentrated KOH solution".HYDROMETALLURGY 80.3(2005):170-178. |
入库方式： OAI收割
来源：过程工程研究所
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