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Thermodynamic Analysis of Separation of Vanadium and Gallium in V(Ⅴ)-Ga (Ⅲ)-H2O Acidic Solution system
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Zijie NIE1, 2, 3, Weiguang ZHANG1, 2, 3, Yibing LI1, 2, 3, Rifan CHEN4, Xuejiao CAO1, 2, 3, Yang CHEN1, 2, 3, Yukun HUANG5
Hydrometallurgy of China | 2025, 44(3) : 334 - 341
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Hydrometallurgy of China | 2025, 44(3): 334-341
• Experiment Research •
Thermodynamic Analysis of Separation of Vanadium and Gallium in V(Ⅴ)-Ga (Ⅲ)-H2O Acidic Solution system
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Zijie NIE1, 2, 3, Weiguang ZHANG1, 2, 3, Yibing LI1, 2, 3, Rifan CHEN4, Xuejiao CAO1, 2, 3, Yang CHEN1, 2, 3, Yukun HUANG5
Affiliations
  • 1 College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China
  • 2 Key Laboratory of New Technology for Non Ferrous Metals and Materials Processing, Guilin University of Technology, Guilin 541004, China
  • 3 Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources, Guilin University of Technology, Guilin 541004, China
  • 4 Laibin Huaxi Smelting Co.,Ltd., Laibin 546100, China
  • 5 Guangxi Huaxi Group Co.,Ltd., Liuzhou 545000, China
Published: 2025-06-20 doi: 10.13355/j.cnki.sfyj.2025.03.007
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To address the issue of the efficient separation and recovery of vanadium and gallium from acidic solution system, the physicochemical differences between V(Ⅴ) and Ga(Ⅲ) in the V(Ⅴ)-Ga(Ⅲ)-H2O system were systematically examined. Through metallurgical thermodynamic simulations, concentration predominance diagrams and species predominance diagrams were generated. Combined with alkali titration experiments and Raman spectroscopy analysis, the optimal lg[C]T-pH range for vanadium-gallium separation was determined. The results indicate that the ideal pH range is between 2 and 3. In the range, vanadium ions will form large-nucleus anions of vanadium polyoxometalates with a molar fraction of more than 90%, while gallium mainly exists in the form of small-nucleus cations, increasing the chemical state difference between vanadium and gallium in acidic solution system and effectively avoiding the formation of large-nucleus gallium hydroxide precipitates, which is conducive to the separation and recovery of vanadium and gallium in the enriched solution system.

polynuclear vanadate anions  /  large-nucleus anions  /  predominance diagrams  /  vanadium  /  gallium  /  separation
Zijie NIE, Weiguang ZHANG, Yibing LI, Rifan CHEN, Xuejiao CAO, Yang CHEN, Yukun HUANG. Thermodynamic Analysis of Separation of Vanadium and Gallium in V(Ⅴ)-Ga (Ⅲ)-H2O Acidic Solution system[J]. Hydrometallurgy of China, 2025 , 44 (3) : 334 -341 . DOI: 10.13355/j.cnki.sfyj.2025.03.007
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Year 2025 volume 44 Issue 3
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Article Info
doi: 10.13355/j.cnki.sfyj.2025.03.007
  • Receive Date：2024-12-13
  • Online Date：2025-09-01
  • Published：2025-06-20
Article Data
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History
  • Received：2024-12-13
Funding
Affiliations
    1 College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China
    2 Key Laboratory of New Technology for Non Ferrous Metals and Materials Processing, Guilin University of Technology, Guilin 541004, China
    3 Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources, Guilin University of Technology, Guilin 541004, China
    4 Laibin Huaxi Smelting Co.,Ltd., Laibin 546100, China
    5 Guangxi Huaxi Group Co.,Ltd., Liuzhou 545000, China
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https://castjournals.cast.org.cn/joweb/sfyj/EN/10.13355/j.cnki.sfyj.2025.03.007
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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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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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