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Microwave-assisted Leaching of Tungsten and Vanadium from Spent SCR Catalyst Using Sodium Hydroxide
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Ling ZENG1, Mingming YU1, Delong YANG1, Di WU2, Weiquan YUAN3
Hydrometallurgy of China | 2024, 43(2) : 134 - 139
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Hydrometallurgy of China | 2024, 43(2): 134-139
• Experiment Research •
Microwave-assisted Leaching of Tungsten and Vanadium from Spent SCR Catalyst Using Sodium Hydroxide
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Ling ZENG1, Mingming YU1, Delong YANG1, Di WU2, Weiquan YUAN3
Affiliations
  • 1 School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
  • 2 Institute of Resource Utilization and Rare Earth Development, Guangdong Academy of Sciences, Guangzhou 510650, China
  • 3 School of Resources and Architectural Engineering, GanNan University of Science and Technology, Ganzhou 341000, China
Published: 2024-04-20 doi: 10.13355/j.cnki.sfyj.2024.02.004
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Aiming at the high efficiency leaching of W and V in a SCR denitration catalyst, the microwave assisted leaching of W and V in waste SCR catalyst was studied. The results show that under the conditions of microwave power of 600 W, reaction time of 1 h, reaction temperature of 60 ℃, sodium hydroxide concentration of 40% and liquid volume/solid mass ratio of 7.5/1, the leaching rates of W and V in SCR denitration catalyst can reach 89.96% and 96.32%, respectively. After leaching the alkaline leaching residue with 4 mol/L HCl solution for 1 h, TiO2 with a purity of 98.76% is obtained. Compared with the traditional water bath heating method, microwave heating leaching method can not only improve the leaching rate of tungsten and vanadium on SCR denitrification catalyst, but also greatly shorten the test reaction time, which provides a reliable technical basis for the green effective leaching of W and V in SCR denitrification catalyst.

spent SCR catalyst  /  microwave  /  assist  /  alkaline  /  leaching  /  tungsten  /  vanadium
Ling ZENG, Mingming YU, Delong YANG, Di WU, Weiquan YUAN. Microwave-assisted Leaching of Tungsten and Vanadium from Spent SCR Catalyst Using Sodium Hydroxide[J]. Hydrometallurgy of China, 2024 , 43 (2) : 134 -139 . DOI: 10.13355/j.cnki.sfyj.2024.02.004
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doi: 10.13355/j.cnki.sfyj.2024.02.004
  • Receive Date：2023-11-22
  • Online Date：2025-09-10
  • Published：2024-04-20
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  • Received：2023-11-22
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Affiliations
    1 School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
    2 Institute of Resource Utilization and Rare Earth Development, Guangdong Academy of Sciences, Guangzhou 510650, China
    3 School of Resources and Architectural Engineering, GanNan University of Science and Technology, Ganzhou 341000, China
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https://castjournals.cast.org.cn/joweb/sfyj/EN/10.13355/j.cnki.sfyj.2024.02.004
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表12种不同金属材料的力学参数
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Family		 属数
Number of
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Number of
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Percentage of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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