Research on short-process vanadium extraction technology from stone coal based on phosphate-assisted leaching

ZHU Zhenzhou; WU Jinpeng; GAO Chenlong; WANG Wei; JIAO Shuqiang

doi:10.7513/j.issn.1004-7638.2025.03.004

Volume 46 Issue 3

Jun. 2025

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ZHU Zhenzhou, WU Jinpeng, GAO Chenlong, WANG Wei, JIAO Shuqiang. Research on short-process vanadium extraction technology from stone coal based on phosphate-assisted leaching[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(3): 18-24. doi: 10.7513/j.issn.1004-7638.2025.03.004

Citation:

ZHU Zhenzhou, WU Jinpeng, GAO Chenlong, WANG Wei, JIAO Shuqiang. Research on short-process vanadium extraction technology from stone coal based on phosphate-assisted leaching[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(3): 18-24. doi: 10.7513/j.issn.1004-7638.2025.03.004

Citation:

ZHU Zhenzhou, WU Jinpeng, GAO Chenlong, WANG Wei, JIAO Shuqiang. Research on short-process vanadium extraction technology from stone coal based on phosphate-assisted leaching[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(3): 18-24. doi: 10.7513/j.issn.1004-7638.2025.03.004

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Research on short-process vanadium extraction technology from stone coal based on phosphate-assisted leaching

doi: 10.7513/j.issn.1004-7638.2025.03.004

1.
State Key Laboratory of Advanced Metallurgy, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
2.
Dali Energy Storage Technology Hubei Co., Ltd., Xiangyang 441035, Hubei, China

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Received Date: 2025-01-10
Available Online: 2025-06-30
Publish Date: 2025-06-30

Abstract

Abstract

Aiming at the mineral phase analysis and traditional treatment process of a stone-coal vanadium mine in Hubei, a short-flow vanadium extraction process with phosphate-assisted leaching was developed. The vanadium extraction process using sulfuric acid curing - phosphate-assisted leaching - solvent extraction - vanadium precipitation using ammonia water was carried out for vanadium extraction experiments. The effects of water leaching pH, phosphorus-iron molar ratio, leaching time and temperature on the leaching rate of vanadium and iron were investigated, respectively. The results showed that the cured sample was obtained by curing the raw material with particle size less than 0.074 mm at 200 ℃ and the dosage of 0.15 mL/g of concentrated sulfuric acid for 2 h. The cured sample could leach up to 93.44% of vanadium and 38.19% of iron under the experimental conditions of aqueous leaching pH 2.5, phosphorus-iron molar ratio of 1.5:1, leaching time of 1 h, and leaching temperature of 70 ℃. A powdered vanadium pentoxide product with purity greater than 99% was successfully prepared by using P204 extraction and sulfuric acid stripping for 2-stage extraction and stripping, combined with ammonia vanadium precipitation process. This process improves the leaching rate of vanadium and provides a new technical route for vanadium extraction from stone coal.
- vanadium extraction from stone coal,
- iron precipitation,
- extraction,
- vanadium precipitation

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References(15)

References

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