Kinetic Investigations on the Leaching of Niobium from a Low-Grade Niobium-Tantalum Ore by Concentrated KOH Solution
文献类型：期刊论文
| 作者 | Zhou Hongming; Zheng Shili; Zhang Yi |
| 刊名 | 中国化学工程学报：英文版
 |
| 出版日期 | 2004 |
| 卷号 | 12.0期号:002页码:202 |
| 关键词 | 铌 动力学 过滤技术 钽 KOH 扩散控制 温度 |
| ISSN号 | 1004-9541 |
| 英文摘要 | The leaching kinetics of niobium from a low-gr~te 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. |
| 语种 | 英语 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/44629]  |
| 专题 | 中国科学院过程工程研究所 |
| 作者单位 | 中国科学院过程工程研究所 |
| 推荐引用方式 GB/T 7714 | Zhou Hongming,Zheng Shili,Zhang Yi. Kinetic Investigations on the Leaching of Niobium from a Low-Grade Niobium-Tantalum Ore by Concentrated KOH Solution[J]. 中国化学工程学报：英文版,2004,12.0(002):202. |
| APA | Zhou Hongming,Zheng Shili,&Zhang Yi.(2004).Kinetic Investigations on the Leaching of Niobium from a Low-Grade Niobium-Tantalum Ore by Concentrated KOH Solution.中国化学工程学报：英文版,12.0(002),202. |
| MLA | Zhou Hongming,et al."Kinetic Investigations on the Leaching of Niobium from a Low-Grade Niobium-Tantalum Ore by Concentrated KOH Solution".中国化学工程学报：英文版 12.0.002(2004):202. |
入库方式： OAI收割
来源：过程工程研究所
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