In-situ preparation of VS<sub>4</sub> from vanadium-containing leaching solution of vanadium chromium slag

Wen Jing; Shapkat Arken; Jiang Tao

doi:10.7513/j.issn.1004-7638.2021.01.001

Volume 42 Issue 1

Feb. 2021

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Wen Jing, Shapkat Arken, Jiang Tao. In-situ preparation of VS4 from vanadium-containing leaching solution of vanadium chromium slag[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(1): 1-7. doi: 10.7513/j.issn.1004-7638.2021.01.001

Citation:

Wen Jing, Shapkat Arken, Jiang Tao. In-situ preparation of VS₄ from vanadium-containing leaching solution of vanadium chromium slag[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(1): 1-7. doi: 10.7513/j.issn.1004-7638.2021.01.001

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In-situ preparation of VS₄ from vanadium-containing leaching solution of vanadium chromium slag

doi: 10.7513/j.issn.1004-7638.2021.01.001

School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China

Received Date: 2020-11-02
Publish Date: 2021-02-10

Abstract

Abstract

At present, the traditional vanadium extraction process is still based on the preparation of vanadium products for steel and chemical industries. In order to promote the deep processing of vanadium products, a new technology of in-situ preparation of high value-added material VS₄ from vanadium leaching solution was proposed in this paper, which can be used in energy storage and catalysis fields. VS₄ was prepared from vanadium chromium slag with different roasting and leaching processes as the vanadium source and thioacetamide as sulfur source. The results show that the leaching solution from sodium roasting-water leaching process and calcification roasting-sodium carbonate leaching process can be used as mother liquor for VS₄ generation. However, due to the formation of sodium silicate, sodium chromate and other sodium salts in the sodium roasting process, the corresponding leaching solution contains a large amount of sodium, silicon, chromium and other impurities, resulting in low purity of VS₄ products. Due to the selective calcification effect of calcium salt on vanadium, the separation efficiency of vanadium and chromium is very high in the process of calcium roasting and sodium carbonate leaching process. The purity of VS₄ product is high, and it has similar morphology with VS₄ prepared using sodium metavanadate as the vanadium source. The process not only realizes the value-added utilization of vanadium chromium slag, but also significantly shortens the preparation process of vanadium containing materials.
- vanadium chromium slag,
- VS₄,
- in-situ preparation,
- purity

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References(16)

References

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