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Investigation of Mineral Phase Transformation Technology Followed by Magnetic Separation for Recovery of Iron Values from Red Mud

Author

Listed:
  • Shuai Yuan

    (College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China)

  • Ruofeng Wang

    (College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China)

  • Hao Zhang

    (College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China)

  • Yanjun Li

    (College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China)

  • Liu Liu

    (Ansteel Beijing Research Institute Co., Ltd., Beijing 102200, China)

  • Yafeng Fu

    (Ansteel Beijing Research Institute Co., Ltd., Beijing 102200, China)

Abstract

Experiments were conducted to investigate the mineral phase transformation technology of high-iron red mud, effectively extracting valuable iron minerals and reducing the hazards associated with red mud stockpiling and storage. A magnetic concentrate with an iron grade of 55.84% and recovery of 93.75% could be obtained at a roasting temperature of 560 °C, roasting time of 15 min, CO concentration of 20% and total gas flow of 500 mL/min. A combination of XRD and SEM-EDS analysis was employed to evaluate the phase transformation during the roasting process. ToF-SIMS analysis was applied to assess the occurrence state of various elements during the roasting of red mud.

Suggested Citation

  • Shuai Yuan & Ruofeng Wang & Hao Zhang & Yanjun Li & Liu Liu & Yafeng Fu, 2022. "Investigation of Mineral Phase Transformation Technology Followed by Magnetic Separation for Recovery of Iron Values from Red Mud," Sustainability, MDPI, vol. 14(21), pages 1-15, October.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:21:p:13787-:d:951852
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    References listed on IDEAS

    as
    1. Shao, Shanshan & Zhang, Pengfei & Xiang, Xianliang & Li, Xiaohua & Zhang, Huiyan, 2022. "Promoted ketonization of bagasse pyrolysis gas over red mud-based oxides," Renewable Energy, Elsevier, vol. 190(C), pages 11-18.
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    Cited by:

    1. Xinming Li & Pan Yan & Song Yin & Xianwei Zhang & Pengfei Liu & Yulong Wang, 2023. "Strength Characteristics and Micro-Mechanism of Silty Soil Modified by Red Mud Co-Cement," Sustainability, MDPI, vol. 15(11), pages 1-19, May.

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