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| Study on Oxygen Roasting and Alkali Leaching of Acid Leaching Slag of Waste Superalloy |
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Received:December 02, 2014
Revised:December 04, 2014
Accepted:December 08, 2014
Published Online:July 17, 2015
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| DOI：doi：10.3969/j.issn.1007-7545.2015.08.011 |
| KeyWord:superalloy; roasting; alkali leaching; tungsten |
| Author | Institution |
| WU Yong-qian |
西北有色金属研究院 |
| WU Xian |
西北有色金属研究院 |
| CHEN Kun-kun |
西北有色金属研究院 |
| ZHANG Bo-sheng |
西北有色金属研究院 |
| GUO Rui |
西北有色金属研究院 |
| MA Guang |
西北有色金属研究院 |
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| Abstract: |
| Tungsten was recovered from acid leaching slag of waste superalloy by oxygen roasting and alkali leaching. The effects of roasting temperature, roasting time, NaOH concentration, leaching temperature, leaching time on tungsten leaching rate were investigated. The results show tungsten leaching rate is 98% above under the optimum conditions including roasting temperature of 700 ℃, roasting time of 60 min, NaOH concentration of 160 g/L, leaching temperature of 85 ℃, L/S=3︰1, and leaching time of 60 min. |
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