New process for treating boron-bearing iron ore by flash reduction coupled with magnetic separation

Qipeng Bao; Lei Guo; Hong Yong Sohn; Haibin Zuo; Feng Liu; Yongliang Gao; Zhancheng Guo

doi:10.1007/s12613-023-2756-9

Volume 31 Issue 3

Mar. 2024

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2024 > 31(3): 473-484

Qipeng Bao, Lei Guo, Hong Yong Sohn, Haibin Zuo, Feng Liu, Yongliang Gao, and Zhancheng Guo, New process for treating boron-bearing iron ore by flash reduction coupled with magnetic separation, Int. J. Miner. Metall. Mater., 31(2024), No. 3, pp. 473-484. https://doi.org/10.1007/s12613-023-2756-9

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Qipeng Bao, Lei Guo, Hong Yong Sohn, Haibin Zuo, Feng Liu, Yongliang Gao, and Zhancheng Guo, New process for treating boron-bearing iron ore by flash reduction coupled with magnetic separation, Int. J. Miner. Metall. Mater., 31(2024), No. 3, pp. 473-484. https://doi.org/10.1007/s12613-023-2756-9

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Research Article

New process for treating boron-bearing iron ore by flash reduction coupled with magnetic separation

+ Author Affiliations

Corresponding authors:
Lei Guo E-mail: leiguo@ustb.edu.cn

Zhancheng Guo E-mail: zcguo@ustb.edu.cn
Received: 10 August 2023; Revised: 27 September 2023; Accepted: 28 September 2023; Available online: 29 September 2023

Abstract

Abstract

Boron is an important industrial raw material often sourced from minerals containing different compounds that cocrystallize, which makes it difficult to separate the mineral phases through conventional beneficiation. This study proposed a new treatment called flash reduction–melting separation (FRMS) for boron-bearing iron concentrates. In this method, the concentrates were first flash-reduced at the temperature under which the particles melt, and the slag and the reduced iron phases disengaged at the particle scale. Good reduction and melting effects were achieved above 1550°C. The B₂O₃ content in the separated slag was over 18wt%, and the B content in the iron was less than 0.03wt%. The proposed FRMS method was tested to investigate the effects of factors such as ore particle size and temperature on the reduction and melting steps with and without pre-reducing the raw concentrate. The mineral phase transformation and morphology evolution in the ore particles during FRMS were also comprehensively analyzed.
- ludwigite;
- boron-bearing iron concentrate;
- flash reduction;
- melting separation;
- boron

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References(33)

References

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