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| Study of Tantalum Recovery from Waste Superalloy |
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Received:November 21, 2013
Revised:November 26, 2013
Accepted:November 27, 2013
Published Online:May 23, 2014
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| DOI：10.3969/j.issn.1007-7545.2014.06.012 |
| KeyWord:waste superalloy; enriched slag; tantalum pentoxide |
| Author | Institution |
| Wang Zhijun |
西北有色金属研究院 陕西 西安 |
| Wang Jingkun |
西北有色金属研究院 |
| Chen Kunkun |
西北有色金属研究院 |
| Li Jin |
西北有色金属研究院 陕西 西安 |
| Guo Rui |
西北有色金属研究院 陕西 西安 |
| Ma Guang |
西北有色金属研究院 陕西 西安 |
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| Abstract: |
| Tantalum, niobium and zirconium enriched slag was obtained from waste superalloy powder by processes of oxidation acid leaching, alkali roasting and water leaching. Tantalum pentoxide is prepared from this slag by processes of step-by-step leaching, extraction separation, ion exchange, and precipitating with sodium hydroxide. The results show that the prepared tantalum pentoxide can meet the requirement of national standard of YS/T427-2000. |
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