Kinetic investigations on the leaching of niobium from a low-grade niobium-tantailum ore by concentrated KOH solution
文献类型：期刊论文
| 作者 | Zhou, HM; Zheng, SL; Zhang, Y |
| 刊名 | CHINESE JOURNAL OF CHEMICAL ENGINEERING
 |
| 出版日期 | 2004-04-01 |
| 卷号 | 12期号:2页码:202-207 |
| 关键词 | clean process leaching kinetics KOH niobium-tantalum ore diffusion control |
| ISSN号 | 1004-9541 |
| 其他题名 | Chin. J. Chem. Eng. |
| 中文摘要 | The leaching kinetics of niobium from a low-grade niobium-tantalum ore by concentrated KOH solution under atmospheric pressure has been studied. Significant effects of reaction temperature, KOH concentration, stirring speed, particle size and mass ratio of alkali-to-ore on the dissolution rate of niobium were examined. The experimental data of the leaching rates and the observed effects of the relevant operating variables were well interpreted with a shrinking core model under diffusion control. By using the Arrhenius expression, the apparent activation energy for the dissolution of niobium was evaluated. Finally, on the base of the shrinking core model, the rate equation was established. |
| 英文摘要 | The leaching kinetics of niobium from a low-grade niobium-tantalum ore by concentrated KOH solution under atmospheric pressure has been studied. Significant effects of reaction temperature, KOH concentration, stirring speed, particle size and mass ratio of alkali-to-ore on the dissolution rate of niobium were examined. The experimental data of the leaching rates and the observed effects of the relevant operating variables were well interpreted with a shrinking core model under diffusion control. By using the Arrhenius expression, the apparent activation energy for the dissolution of niobium was evaluated. Finally, on the base of the shrinking core model, the rate equation was established. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | HYDROCHLORIC-ACID ; ILMENITE ORE |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000221432500008 |
| 公开日期 | 2013-11-05 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/4956]  |
| 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 | Zhou, HM,Zheng, SL,Zhang, Y. Kinetic investigations on the leaching of niobium from a low-grade niobium-tantailum ore by concentrated KOH solution[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2004,12(2):202-207. |
| APA | Zhou, HM,Zheng, SL,&Zhang, Y.(2004).Kinetic investigations on the leaching of niobium from a low-grade niobium-tantailum ore by concentrated KOH solution.CHINESE JOURNAL OF CHEMICAL ENGINEERING,12(2),202-207. |
| MLA | Zhou, HM,et al."Kinetic investigations on the leaching of niobium from a low-grade niobium-tantailum ore by concentrated KOH solution".CHINESE JOURNAL OF CHEMICAL ENGINEERING 12.2(2004):202-207. |
入库方式： OAI收割
来源：过程工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。