Leaching of niobium and tantalum from a low-grade ore using a KOH roast-water leach system
文献类型：期刊论文
| 作者 | Wang, Xiaohui1,2; Zheng, Shili1; Xu, Hongbin1; Zhang, Yi1 |
| 刊名 | HYDROMETALLURGY
 |
| 出版日期 | 2009-09-01 |
| 卷号 | 98期号:3-4页码:219-223 |
| 关键词 | Niobium-tantalum ore Alkali roast Potassium hydroxide Water leach |
| ISSN号 | 0304-386X |
| 通讯作者 | Zheng, SL |
| 英文摘要 | A new process is proposed for the leaching and recovery of niobium and tantalum from a low-grade refractory niobium-tantalum ore after adding pure Nb(2)O(5) to adjust the niobium to tantalum ratio. The ore was roasted and decomposed with KOH then leached with water. Experiments were carried out to study the effect of the Nb(2)O(5)-to-Ta(2)O(5) mass ratio, decomposition temperature, alkali-to-ore mass ratio and decomposition time on the leaching of niobium and tantalum, as well as the associated impurity elements, such as titanium, iron, manganese, silicon and tin. The optimal conditions were determined to be: Nb(2)O(5)-to-Ta(2)O(5) mass ratio 2.33:1; KOH-to-ore mass ratio 2:11; reacting for 60 min at 400 degrees C. Leaching with water extracted -95% Nb and 94% Ta together with about 80% Si and Sn. 50% Ti and <20% Fe and Mn. The niobium and tantalum was recovered as high purity (Nb,Ta)205 (99.3%) through evaporation, crystallization and phase transformation processes. (C) 2009 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 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000268439800004 |
| 公开日期 | 2013-11-29 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/6592]  |
| 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, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xiaohui,Zheng, Shili,Xu, Hongbin,et al. Leaching of niobium and tantalum from a low-grade ore using a KOH roast-water leach system[J]. HYDROMETALLURGY,2009,98(3-4):219-223. |
| APA | Wang, Xiaohui,Zheng, Shili,Xu, Hongbin,&Zhang, Yi.(2009).Leaching of niobium and tantalum from a low-grade ore using a KOH roast-water leach system.HYDROMETALLURGY,98(3-4),219-223. |
| MLA | Wang, Xiaohui,et al."Leaching of niobium and tantalum from a low-grade ore using a KOH roast-water leach system".HYDROMETALLURGY 98.3-4(2009):219-223. |
入库方式： OAI收割
来源：过程工程研究所
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