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Deep Dealkalization of Vanadium Extraction Tailings via Calcification Transformation
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Xiaoying YANG1, 2, 3, 4, Weiguang ZHANG1, 2, 3, 4, Xuejiao CAO1, 2, 3, 4, Yang CHEN1, 2, 3, 4, Ting’an ZHANG5
Hydrometallurgy of China | 2026, 45(1) : 120 - 128
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Hydrometallurgy of China | 2026, 45(1): 120-128
• Experiment Research •
Deep Dealkalization of Vanadium Extraction Tailings via Calcification Transformation
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Xiaoying YANG1, 2, 3, 4, Weiguang ZHANG1, 2, 3, 4, Xuejiao CAO1, 2, 3, 4, Yang CHEN1, 2, 3, 4, Ting’an ZHANG5
Affiliations
  • 1.College of Materials Science and Engineering, Guilin University of Technology, Guilin　541004, China
  • 2.Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, 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.Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin　541004, China
  • 5.School of Metallurgy, Northeastern University, Shenyang　110819, China
Published: 2026-02-20 doi: 10.13355/j.cnki.sfyj.2026.01.017
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Dealkalization of vanadium extraction tailings using calcium oxide was investigated. The effects of calcium oxide dosage, reaction temperature, reaction time, liquid volume to solid mass ratio, and stirring speed on the dealkalization rate were investigated, and the removal behavior of major metals during the dealkalization process was explored. The results indicate that under the optimal conditions of calcium oxide dosage of 19%, reaction temperature of 200 ℃, reaction time of 60 min, liquid volume to solid mass ratio of 2∶1, and stirring speed of 800 r/min, the dealkalization rate of the tailings reaches about 85%, with the Na2O content in the residue reduces to less than 0.6%. Meanwhile, the process ensures relatively low removal rates for vanadium and chromium. The findings of the study can serve as a technical reference for the comprehensive resource utilization of vanadium extraction tailings.

vanadium extraction tailings  /  calcium oxide  /  dealkalization  /  calcification transformation  /  resource utilization
杨晓莹, 张伟光, 曹雪娇, 陈杨, 张廷安. 提钒尾渣钙化转型深度脱碱试验研究. 湿法冶金, 2026 , 45 (1) : 120 -128 . DOI: 10.13355/j.cnki.sfyj.2026.01.017
Xiaoying YANG, Weiguang ZHANG, Xuejiao CAO, Yang CHEN, Ting’an ZHANG. Deep Dealkalization of Vanadium Extraction Tailings via Calcification Transformation[J]. Hydrometallurgy of China, 2026 , 45 (1) : 120 -128 . DOI: 10.13355/j.cnki.sfyj.2026.01.017
Appendix
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Year 2026 volume 45 Issue 1
146
29
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Article Info
doi: 10.13355/j.cnki.sfyj.2026.01.017
  • Receive Date：2025-09-29
  • Online Date：2026-09-28
  • Published：2026-02-20
Article Data
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History
  • Received：2025-09-29
  • Revised：2025-11-14
Funding
Affiliations
    1.College of Materials Science and Engineering, Guilin University of Technology, Guilin　541004, China
    2.Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, 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.Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin　541004, China
    5.School of Metallurgy, Northeastern University, Shenyang　110819, China
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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
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Genus		 种数
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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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