Clean, high efficiency and green utilization of vanadium tailings extracted by calcium process

He Wei; Wang Jian; Ge Wensun; Chen Lian

doi:10.7513/j.issn.1004-7638.2022.06.015

Volume 43 Issue 6

Jan. 2023

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He Wei, Wang Jian, Ge Wensun, Chen Lian. Clean, high efficiency and green utilization of vanadium tailings extracted by calcium process[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(6): 100-108. doi: 10.7513/j.issn.1004-7638.2022.06.015

Citation:

He Wei, Wang Jian, Ge Wensun, Chen Lian. Clean, high efficiency and green utilization of vanadium tailings extracted by calcium process[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(6): 100-108. doi: 10.7513/j.issn.1004-7638.2022.06.015

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Clean, high efficiency and green utilization of vanadium tailings extracted by calcium process

doi: 10.7513/j.issn.1004-7638.2022.06.015

Pangang Group Research Institute Co., Ltd., State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China

Received Date: 2022-03-01
Publish Date: 2023-01-13

Abstract

Abstract

Calcium extraction of vanadium tailings was taken as research object, the composition, phase and occurrence state of main elements of the tailings were analyzed. On the basis of combining previous studies, the comprehensive utilization of vanadium-bearing alloy and titanium-bearing furnace slag from calcium-based vanadium extraction tailings by physical method and pyrometallurgical separation technology is put forward. Studies have shown that after the removal of vanadium tailings by shaking desulfurization treatment, gypsum residue and iron-rich vanadium material were separated, gypsum residue is used in cement plants. V/Fe-rich material with a certain proportion of reducing agent and adhesive mixed press into pellets, smelting by ore-thermal furnace smelting reduction, ferroalloys with a vanadium content of about 3% and reduction slag containing about 36% TiO₂ were obtained, V-containing ferroalloys can be used for alloying V-containing molten steel, and reduced slag can be used for smelting high titanium slag. It can be exploited for effective extraction and recovery of valuable elements such as Fe, V and Ti from calcium-based extraction of vanadium tailings and can reduce the environmental pollution.

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References(14)

References

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