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| Study on Comprehensive Recovery and Utilization of V and Mo from HDS Slag |
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Received:January 21, 2021
Revised:January 26, 2021
Accepted:February 01, 2021
Published Online:June 21, 2021
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| DOI：doi：10.3969/j.issn.1007-7545.2021.07.015 |
| KeyWord:HDS slag; deoiling treatment; decarbonization and desulfurization; sodium salt roasting |
| Author | Institution |
| GAO Chong |
矿冶科技集团 |
| WANG Wei-zhen |
矿冶科技集团 |
| CHANG Yao-chao |
矿冶科技集团 |
| HUANG Hai-hui |
矿冶科技集团 |
| LI Tuo-fu |
矿冶科技集团 |
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| Abstract: |
| Comprehensive recycling of V and Mo from HDS slag, which contains V2O5 16.3%, Mo 2.02%, was studied. The results show that leaching rate of V and Mo is 94.76% and 96.93% respectively under the optimum conditions including deoiling at 350 ℃ for one hour, particle size of waste catalyst of -212 μm of ≥96%, decarburization and desulfurization at 750 ℃ for two hours; molar ratio of sodium carbonate to vanadium and molybdenum content of 1.2, calcination at 800 ℃ for 2 h, L/S of 2︰1, leaching temperature of 40 ℃, and leaching time of 30 min. It can provide reference for comprehensive recovery and utilization of vanadium-containing waste catalyst. |
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