Effect of manganese on vanadium extraction by calcification from vanadium slag

Ye Lu; Du Guangchao; Li Yuepeng; Peng Yi; Liu Yan

doi:10.7513/j.issn.1004-7638.2022.06.006

Volume 43 Issue 6

Jan. 2023

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Ye Lu, Du Guangchao, Li Yuepeng, Peng Yi, Liu Yan. Effect of manganese on vanadium extraction by calcification from vanadium slag[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(6): 38-44. doi: 10.7513/j.issn.1004-7638.2022.06.006

Citation:

Ye Lu, Du Guangchao, Li Yuepeng, Peng Yi, Liu Yan. Effect of manganese on vanadium extraction by calcification from vanadium slag[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(6): 38-44. doi: 10.7513/j.issn.1004-7638.2022.06.006

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Effect of manganese on vanadium extraction by calcification from vanadium slag

doi: 10.7513/j.issn.1004-7638.2022.06.006

Ye Lu^{1, 2
,
,},
Du Guangchao^{1, 2},
Li Yuepeng³,
Peng Yi^{1, 2},
Liu Yan³

1.
State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China
2.
Pangang Group Research Institute Co., Ltd., Panzhihua 617000, Sichuan, China
3.
Pangang Group Xichang Vanadium Products Technology Co., Ltd. , Xichang 615000, Sichuan, China

Received Date: 2022-04-12
Publish Date: 2023-01-13

Abstract

Abstract

In this paper, two batches of vanadium slag with different Mn content were taken as the research object. XRD and SEM-EDS were used to explore the phase composition and microstructure of vanadium slag, and to find out the phase change of calcified roasted clinker with different Mn content and its effect on vanadium leaching rate. The results show that the vanadium slag is mainly composed of vanadium iron spinel, iron olivine and diopside. In a certain range, the small fluctuation of main components such as V, Mn and Fe in the slag does not affect the composition of the main phase of vanadium slag. Both roasting clinkers consist of Fe₂O₃, Fe₂TiO₅, silicate and vanadate. Of these phases, vanadate mainly refers to the double salt of Mn₂V₂O₇ and Ca₂V₂O₇, vanadium mainly occurs in this salt. The change of Mn content in vanadium slag has no obvious effect on the clinker phase composition. Mn can promote the roasting-leaching effect of calcified vanadium extraction under the same roasting-leaching conditions and low calcium-vanadium ratio. The leaching rates of vanadium from roasted clinkers with MnO content of 6.98% and 8.26% are 93.66% and 94.51%, respectively.
- vanadium slag,
- manganese content,
- vanadium extraction by calcification,
- phase transformation,
- microstructure

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References(19)

References

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