Vanadium extraction from hot metal via indirect oxidation using solid oxidizing agents

ZHANG Ningyu; XIE Shaoxian; XIANG Junyi; CHEN Lian; LÜ Xuewei

doi:10.7513/j.issn.1004-7638.2026.01.001

Volume 47 Issue 1

Feb. 2026

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ZHANG Ningyu, XIE Shaoxian, XIANG Junyi, CHEN Lian, LÜ Xuewei. Vanadium extraction from hot metal via indirect oxidation using solid oxidizing agents[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(1): 1-9. doi: 10.7513/j.issn.1004-7638.2026.01.001

Citation:

ZHANG Ningyu, XIE Shaoxian, XIANG Junyi, CHEN Lian, LÜ Xuewei. Vanadium extraction from hot metal via indirect oxidation using solid oxidizing agents[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(1): 1-9. doi: 10.7513/j.issn.1004-7638.2026.01.001

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Vanadium extraction from hot metal via indirect oxidation using solid oxidizing agents

doi: 10.7513/j.issn.1004-7638.2026.01.001

1.
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
2.
School of Metallurgy and Power Engineering, Chongqing University of Science & Technology, Chongqing 401331, China
3.
State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Pangang Group Research Institute Co., Ltd., Panzhihua617000, Sichuan, China

More Information

Received Date: 2025-06-19
Accepted Date: 2025-08-27
Rev Recd Date: 2025-08-18

Available Online: 2026-02-28

Publish Date: 2026-02-28

Abstract

Abstract

Aiming at solving the problems of temperature control in molten bath, iron loss, and grade reduction of vanadium slag caused by O₂ injection in the traditional process of vanadium extraction from hot metal, a new technology using iron oxides (Fe₂O₃) for vanadium extraction from hot metal was proposed in this study, taking advantage of the characteristics of mild indirect oxidation reaction and controllable process. Thermodynamic calculations identified Fe₂O₃ as the optimal oxidizer with recommended addition ranges of 1.5%–6.0%. A systematic investigation was conducted on the effects of Fe₂O₃ addition ratio, particle size, and bath temperature, revealing the enhancement mechanisms of particle size reduction and temperature elevation on vanadium oxidation. The study further developed a “CaO-Fe₂O₃” oxidizer system that improves reaction efficiency by lowering the melting temperature. Through process parameter optimization, the optimal conditions were determined as: reaction temperature 1350 °C, 4.5% of 0.074–0.5 mm Fe₂O₃ with n(CaO): n(Fe₂O₃) = 0.75. Under these conditions, the reaction reached equilibrium within 2 min, achieving a final V content in the hot metal of 0.016%, oxidation rate of 95.12%, with vanadium slag containing 7.15% V and 1.93% P. This “CaO-Fe₂O₃” system demonstrates efficient vanadium extraction from hot metal and provides new insights for the development of vanadium extraction technologies.
- V-bearing hot metal,
- vanadium extraction,
- indirect oxidation,
- vanadium slag

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References(16)

References

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