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| Technology Study of Comprehensive Recovery of Multi Metals from Waste Catalyst |
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Received:December 01, 2013
Revised:December 03, 2013
Accepted:December 04, 2013
Published Online:June 23, 2014
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| DOI：10.3969/j.issn.1007-7545.2014.07.011 |
| KeyWord:waste catalyst; W; Mo; V; comprehensive recovery |
| Author | Institution |
| ZHU Lai-dong |
西北矿冶研究院 |
| LU Xing-wu |
西北矿冶研究院 |
| YI Chao |
西北矿冶研究院 |
| HE Guo-cai |
西北矿冶研究院 |
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| Abstract: |
| Tungsten, molybdenum, and vanadium were comprehensively recovered from waste catalyst with a series of processes including two-stage countercurrent leaching, vanadium precipitation, recrystallization after ammonia dissolving, and purification. The results show that leaching rate of W, Mo, V is all 95% above, and comprehensive recovery is over 90% under the optimum conditions including leaching temperature of 70 ℃, leaching time of 3.5 h, sodium carbonate concentration of 350 g/L, and ratio of liquid to solid of 3∶1. |
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