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| Leaching and Separation of Tantalum and Hafnium in Sulfuric Acid System |
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Received:February 26, 2019
Revised:March 01, 2019
Accepted:March 04, 2019
Published Online:May 17, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.06.010 |
| KeyWord:tantalum; hafnium; separation; sulfuric acid |
| Author | Institution |
| GAO Kai |
西安瑞鑫科金属材料有限责任公司 |
| ZHANG Bo-sheng |
西北有色金属研究院 |
| WANG Jing-kun |
西安瑞鑫科金属材料有限责任公司 |
| XU Wang-xiang |
西安瑞鑫科金属材料有限责任公司 |
| LI Bo |
西安瑞鑫科金属材料有限责任公司 |
| LI Jing |
西安瑞鑫科金属材料有限责任公司 |
| ZHOU Yan |
西安瑞鑫科金属材料有限责任公司 |
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| Abstract: |
| Separation of tantalum and hafnium in HF system tends to cause environmental pollution. Separation of tantalum and hafnium from alloy slag containing tantalum and hafnium by roasting and leaching with concentrated sulfuric acid was studied. The results show that tantalum and hafnium can be effectively separated under the conditions including mass ratio of alloy slag to sodium carbonate of 1︰1, roasting temperature of 1 000 ℃, liquid-solid ratio of concentrated sulfuric acid to alloy slag of 1︰1, and leaching time of 1 h. |
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