New process for utilization of sea sand vanadium-bearing titanomagnetite

Zhang Jun; Xu Haichuan; Wang Feng; Yan Dinliu; Xu Hongjun; Shen Pengfei

doi:10.7513/j.issn.1004-7638.2021.02.002

Volume 42 Issue 2

Apr. 2021

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Zhang Jun, Xu Haichuan, Wang Feng, Yan Dinliu, Xu Hongjun, Shen Pengfei. New process for utilization of sea sand vanadium-bearing titanomagnetite[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(2): 5-9. doi: 10.7513/j.issn.1004-7638.2021.02.002

Citation:

Zhang Jun, Xu Haichuan, Wang Feng, Yan Dinliu, Xu Hongjun, Shen Pengfei. New process for utilization of sea sand vanadium-bearing titanomagnetite[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(2): 5-9. doi: 10.7513/j.issn.1004-7638.2021.02.002

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New process for utilization of sea sand vanadium-bearing titanomagnetite

doi: 10.7513/j.issn.1004-7638.2021.02.002

State Key Laboratory of Advanced Steel Processes and Products, CISRI, Gangyan Shenghua Science & Technology Co., Ltd., Beijing 100081, China

Received Date: 2021-03-06
Publish Date: 2021-04-10

Abstract

Abstract

In order to improve the comprehensive utilization efficiency of sea sand vanadium titanomagnetite and reduce the treatment energy consumption, an activated reduction treatment method based on the rotary hearth furnace (RF) reduction-electric furnace (EAF) smelting separation process was put forward. The extraction of iron, vanadium and titanium was investigated to optimize the process parameters, and a measure improving the smelting efficiency of EAF was proposed. The smelting efficiency of the sea sand vanadium titanomagnetite as well as the desulfurization limit of the molten iron are improved effectively in the activated reduction-EAF smelting separation flow, in which the optimum effect can be acquired with the activated reduction temperature at 1150～1200 ℃ and the EAF smelting temperature at 1450 ℃, respectively. Moreover, the activated reduction promotes vanadium extraction by oxygen blowing in the EAF smelting process, significantly reducing the power consumption of EAF, improving the extraction efficiency of vanadium and simplifying the steel-making process. Under the new treatment process, the activity of titanium-bearing molten slag is improved, with the titanium leaching rate in dilute sulfuric acid (volume concentration higher than 15%) reaching 95% which avoids the waste acid discharge in the traditional sulfuric acid extraction process.
- sea sand vanadium-bearing titanomagnetite,
- RF-EAF process,
- activated reduction,
- utilization rate

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References(10)

References

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