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Thermodynamic and Kinetic Analysis for Phase Transition of Vanadium Slag by Calcified Roasting
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Jiaji SHAO1, Xiaohan SUN2, Yongdong HE1, Yikun ZHAO3, Shoujun CHEN4, Feilong LIANG5
Mining and Metallurgical Engineering | 2025, 45(1) : 103 - 108
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Mining and Metallurgical Engineering | 2025, 45(1): 103-108
• METALLURGY •
Thermodynamic and Kinetic Analysis for Phase Transition of Vanadium Slag by Calcified Roasting
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Jiaji SHAO1, Xiaohan SUN2, Yongdong HE1, Yikun ZHAO3, Shoujun CHEN4, Feilong LIANG5
Affiliations
  • 1.School of Materials Science and Engineering, Xinjiang University, Urumqi 830046, Xinjiang, China
  • 2.Shandong Energy Digital Technology Co., Ltd., Jinan 250000, Shandong, China
  • 3.School of Physical Science and Technology, Xinjiang University, Urumqi 830046, Xinjiang, China
  • 4.Xinjiang Sheng'an New Material Technology Co., Ltd., Hami 839000, Xinjiang, China
  • 5.Xinjiang Xiangrun New Material Technology Co., Ltd., Hami 839000, Xinjiang, China
Published: 2025-02-01 doi: 10.3969/j.issn.0253-6099.2025.01.019
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Vanadium slag, as raw material, went through calcified roasting processes in the study, and the thermodynamics and kinetic analysis were conducted for verifying the roasting mechanism. The results show that calcified roasting process mainly includes iron oxidation, oxidative decomposition of olivine and spinel, as well as calcification. Based on theoretical and data analysis, calcium-containing phases are formed in the following sequence: CaV2O6, Ca2V2O7, Ca3V2O8, CaSiO3. At a high temperature, excess CaO reacts with vanadium to generate Ca3V2O8 and CaSiO3. The oxidation and calcification processes of vanadium spinel are controlled by a third-order reaction, and the apparent activation energy is 282.45 kJ/mol. In the leaching experiment, the leaching rate reaches the maximum after roasting at 860 ℃ for 120 min, which is consistent with the results obtained from theoretical analysis of calcified roasting process.

vanadium slag  /  calcified roasting  /  phase transition  /  thermodynamics  /  kinetics  /  vanadium extraction
Jiaji SHAO, Xiaohan SUN, Yongdong HE, Yikun ZHAO, Shoujun CHEN, Feilong LIANG. Thermodynamic and Kinetic Analysis for Phase Transition of Vanadium Slag by Calcified Roasting[J]. Mining and Metallurgical Engineering, 2025 , 45 (1) : 103 -108 . DOI: 10.3969/j.issn.0253-6099.2025.01.019
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doi: 10.3969/j.issn.0253-6099.2025.01.019
  • Receive Date：2024-08-01
  • Online Date：2026-03-17
  • Published：2025-02-01
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  • Received：2024-08-01
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Affiliations
    1.School of Materials Science and Engineering, Xinjiang University, Urumqi 830046, Xinjiang, China
    2.Shandong Energy Digital Technology Co., Ltd., Jinan 250000, Shandong, China
    3.School of Physical Science and Technology, Xinjiang University, Urumqi 830046, Xinjiang, China
    4.Xinjiang Sheng'an New Material Technology Co., Ltd., Hami 839000, Xinjiang, China
    5.Xinjiang Xiangrun New Material Technology Co., Ltd., Hami 839000, Xinjiang, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2025.01.019
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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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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