Study on migration and transformation behavior of elements during vanadium extraction by calcification

Liu Xi; Pu Yuwen; Xu Zongyuan; Tang Kang; Zheng Guocan; Chen Yan; Liu Zuohua; Du Jun; Peng Yi; Tao Changyuan

doi:10.7513/j.issn.1004-7638.2023.04.001

Volume 44 Issue 4

Aug. 2023

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Liu Xi, Pu Yuwen, Xu Zongyuan, Tang Kang, Zheng Guocan, Chen Yan, Liu Zuohua, Du Jun, Peng Yi, Tao Changyuan. Study on migration and transformation behavior of elements during vanadium extraction by calcification[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(4): 1-9. doi: 10.7513/j.issn.1004-7638.2023.04.001

Citation:

Liu Xi, Pu Yuwen, Xu Zongyuan, Tang Kang, Zheng Guocan, Chen Yan, Liu Zuohua, Du Jun, Peng Yi, Tao Changyuan. Study on migration and transformation behavior of elements during vanadium extraction by calcification[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(4): 1-9. doi: 10.7513/j.issn.1004-7638.2023.04.001

Citation:

Liu Xi, Pu Yuwen, Xu Zongyuan, Tang Kang, Zheng Guocan, Chen Yan, Liu Zuohua, Du Jun, Peng Yi, Tao Changyuan. Study on migration and transformation behavior of elements during vanadium extraction by calcification[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(4): 1-9. doi: 10.7513/j.issn.1004-7638.2023.04.001

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Study on migration and transformation behavior of elements during vanadium extraction by calcification

doi: 10.7513/j.issn.1004-7638.2023.04.001

1.
College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
2.
Analytical and Testing Center, Chongqing University, Chongqing 401331, China
3.
Pangang Group Research Institute Co., Ltd., Panzhihua 617000, Sichuan, China

Received Date: 2023-04-03
Publish Date: 2023-08-30

Abstract

Abstract

Combined with XRD, XPS, SEM-EDS and ICP-OES characterizations, the phase composition and morphology of acid ammonium salt precipitation vanadium products under different pH values were studied; also the migration and transformation behavior of V, Fe and Mn were analyzed when the pH value of vanadium precipitation was 2.20. The results show that the pH value of vanadium precipitation significantly affects the composition and morphology of the product. The filter cake of vanadium precipitation is amorphous at low pH value, and the crystal form is gradually determined with the increase of pH value. V exists in the form of CaV₂O₆ in vanadium extraction tailings, polyvanadate in filter cake, and V₂O₅ in the final product. The main forms of Fe in tailings are Fe₂O₃ and Fe₂TiO₅, which are less abundant in vanadium filter cake and final product. Mn exists in the form of MnSO₄ in the tailings, and mainly enters the supernatant during vanadium precipitation, while MnV₂O₆·4H₂O exists in the filter cake and with 0.210% in the final product.
- vanadium extraction,
- vanadium precipitation by acidic ammonium salt,
- phase composition,
- product morphology,
- ammonium polyvanadate

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References(24)

References

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