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Experimental Research on Vortex Melting Reduction of High-Iron Red Mud (Bauxite Residue)

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Abstract

In this study, the advantages of the vortex melting reduction treatment of red mud were verified. Vortex melting reduction can improve the feeding rate, promote the reaction and the directional deposition of iron, which was conducive to the separation of slag and gold. The effects of different adding methods, stirring speed and reaction time on iron recovery were investigated by using red mud, aluminum leached slag and calcified slag as raw materials. According to the experiment, the best reaction conditions were that the raw material put into the furnace by rolling pellets, stirring speed 125 RPM, and reaction time 30 min. The results provided an experimental basis for the harmless and high-value utilization of high-iron red mud treated by vortex melting reduction.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 51874078). The Fundamental Research Funds for the Central Universities of China (Grant No. N2025038).

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Authors and Affiliations

  1. School of Metallurgy, Northeastern University, Shenyang, 110819, China

    Xiaofei Li, Ting-an Zhang, Kun Wang, Guozhi Lv, Xi Chao & Xuewei Yang

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  1. Xiaofei Li
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  2. Ting-an Zhang
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  3. Kun Wang
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  4. Guozhi Lv
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  5. Xi Chao
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  6. Xuewei Yang
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Correspondence to Ting-an Zhang.

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Li, X., Zhang, Ta., Wang, K. et al. Experimental Research on Vortex Melting Reduction of High-Iron Red Mud (Bauxite Residue). Bull Environ Contam Toxicol 109, 155–162 (2022). https://doi.org/10.1007/s00128-022-03501-x

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  • DOI: https://doi.org/10.1007/s00128-022-03501-x

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