Separation performance of iron minerals from red mud by fluidized magnetizing roasting

  • Yanjun Li
  • Yuan Shuai Northeastern University
  • Yuexin Han
  • Shumin Zhang
  • Peng Gao

Abstract


In this study, magnetizing roasting in fluidized bed was employed to separate iron minerals from red mud. The effect of treatment conditions on product quality was investigated. In addition, the phase transformation, magnetism changes and microstructure were studied by thermodynamic analysis, chemical analysis, X-ray diffraction technique (XRD), vibrating sample magnetometer (VSM) and optical microscopy. Magnetic concentrates with total iron grade of 57.65% and recovery 90.04% were obtained under the optimum conditions. XRD and chemical analysis demonstrated that 92% iron minerals in red mud converted to magnetite. VSM further confirmed that the magnetism of roasting products was strongly enhanced, the specific susceptibility increasing from 1.9×10-5 m3/kg to 2.9×10-4 m3/kg after magnetizing roasting. Fluidized magnetizing roasting is an effective technology for recovering iron minerals from high-iron red mud.
Published
2018/12/27
How to Cite
Li, Y., Shuai, Y., Han, Y., Zhang, S., & Gao, P. (2018). Separation performance of iron minerals from red mud by fluidized magnetizing roasting. Journal of Mining and Metallurgy, Section B: Metallurgy, 54(3), 393. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/18211
Issue
Vol. 54 No. 3 (2018)
Section
Original Scientific Paper

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