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Advances in Fine Particles Processing pp 323–331Cite as

Selective Deslimings of Fine Iron Ores Based on Aggregation Between Magnetite and Hematite

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Abstract

Hematite fines were found to form aggregates with magnetite particles in the same slurry, without the help of any flocculants. Because of this aggregation, fine iron ores containing hematite and magnetite can be successfully concentrated by multi-stage deslimings, provided that the ore is finely ground and silicate gangues properly dispersed. The effectiveness of this technique has been tested on a commercial scale(100 ton/h). The increased magnetic attraction between magnetite and hematite due to the terrestrial magnetization of magnetite and its size effect are revealed as responsible for the aggregation, considering the fact that the hematite-magnetite system is already in relatively week dispersion because of their low zeta potentials.

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Author information

Authors and Affiliations

  1. Langmuir Center for Colloid and Interlaces, Henry Krumb School of Mines, Columbia University, New York, N.Y., 10027, USA

    Qun Xu & P. Somasundaran

  2. Beijing General Research Institute of Mining & Metallurgy, 1 Wenxing St., Xizhimenwai, Beijing, P.R. China

    J. K. Lou

Authors
  1. Qun Xu
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  2. M. J. Zhang
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  3. J. K. Lou
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  4. P. Somasundaran
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Editor information

Editors and Affiliations

  1. Mineral Resources Institute, College of Engineering, University of Alabama, Tuscaloosa, Alabama, USA

    John Hanna

  2. Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio, USA

    Yosry A. Attia

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© 1990 Elsevier Science Publishing Co., Inc.

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Xu, Q., Zhang, M.J., Lou, J.K., Somasundaran, P. (1990). Selective Deslimings of Fine Iron Ores Based on Aggregation Between Magnetite and Hematite. In: Hanna, J., Attia, Y.A. (eds) Advances in Fine Particles Processing. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-7959-1_27

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  • DOI: https://doi.org/10.1007/978-1-4684-7959-1_27

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4684-7961-4

  • Online ISBN: 978-1-4684-7959-1

  • eBook Packages: Springer Book Archive

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