Study on the clean extraction process of vanadium pentoxide from vanadium ore of stone coal by atmospheric pressure wet method

WAN Hongqiang; LI Jing; TIAN Hongqing; LUO Hao; ZHANG Lifen; TIAN Ziyu

doi:10.7513/j.issn.1004-7638.2025.01.004

Volume 46 Issue 1

Feb. 2025

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WAN Hongqiang, LI Jing, TIAN Hongqing, LUO Hao, ZHANG Lifen, TIAN Ziyu. Study on the clean extraction process of vanadium pentoxide from vanadium ore of stone coal by atmospheric pressure wet method[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(1): 25-33. doi: 10.7513/j.issn.1004-7638.2025.01.004

Citation:

WAN Hongqiang, LI Jing, TIAN Hongqing, LUO Hao, ZHANG Lifen, TIAN Ziyu. Study on the clean extraction process of vanadium pentoxide from vanadium ore of stone coal by atmospheric pressure wet method[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(1): 25-33. doi: 10.7513/j.issn.1004-7638.2025.01.004

Citation:

WAN Hongqiang, LI Jing, TIAN Hongqing, LUO Hao, ZHANG Lifen, TIAN Ziyu. Study on the clean extraction process of vanadium pentoxide from vanadium ore of stone coal by atmospheric pressure wet method[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(1): 25-33. doi: 10.7513/j.issn.1004-7638.2025.01.004

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Study on the clean extraction process of vanadium pentoxide from vanadium ore of stone coal by atmospheric pressure wet method

doi: 10.7513/j.issn.1004-7638.2025.01.004

Changsha Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, Hunan, China

Received Date: 2023-09-12
Publish Date: 2025-02-27

Abstract

Abstract

In view of the increasing environmental protection and energy saving requirements of vanadium extraction from stone coal year by year, a clean process for V₂O₅ extraction by atmospheric pressure wet method including water leaching, extraction separation, vanadium precipitation and calcination was developed. A stone coal mine in Yueyang, Hunan Province was used as raw materials in this paper. Using insulated humidity-concentrated H₂SO₄ maturation leaching treatment, and also investigated the whole process of extraction, back-extraction and product preparation. The test results show that the vanadium leaching rate can reach 87.8% under the following conditions: 98.3% of mineral size under 100 μm, 10% of water mixing, 18% of acid dosage, maturation temperature of 120 ℃, maturation time of 8 h, water leaching liquid-solid ratio of 2:1 and stirring leaching for 2 h at room temperature. With P204 extraction, the vanadium extraction rate was 98% after 5 single-stage extraction at pH=2.2, and the back-extraction rate of 4 stages could reach more than 99%. At the pH of 1.0 for vanadium precipitation and then multi-vanadate was calcined at 600 ℃ for 2 h, required V₂O₅ product met the requirements of national standards.
- vanadium pentoxide,
- coal mine,
- clean extraction,
- wet process,
- atmospheric pressure,
- leaching rate

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References(18)

References

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