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2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 2: Gudenau Intl. Symp. / Iron and Steel Making

Editors:Kongoli F, Kleinschmidt G, Pook H, Ohno K, Wu K
Publisher:Flogen Star OUTREACH
Publication Year:2015
Pages:340 pages
ISBN:978-1-987820-25-6
ISSN:2291-1227 (Metals and Materials Processing in a Clean Environment Series)

    Experimental Study of Efficient Approach to Fine Particle Separation Using Mechanical Stirring by a Fluctuating Magnetic Field

    Kyohei Ishida1; Thomas Pretz2;
    1JFE STEEL CORP., Kawasaki, Japan; 2DEPARTMENT OF PROCESSING AND RECYCLING, RWTH AACHEN UNIVERSITY, 52062 Aachen, Germany (Deutschland);
    Type of Paper: Keynote
    Id Paper: 87
    Topic: 2

    Abstract:

    Steelmaking slag which is by-product of a steelmaking in steelworks includes a lot of iron in itself. To recover these irons, steelworks process the steelmaking slag with analogous separation methods from conventional mineral processing. This study proposes an efficient approach to dry fine particle separation using mechanical stirring by a fluctuating magnetic field which is generated by a magnet roll with multiple poles. The quick change of magnetic field generates strong agitation to attracted particles. Even if the amount of feeding is too much to separate, the fluctuating magnetic field would improve the efficiency of the separation. Moreover, the over all separation efficiency of this method was much better than a conventional device.

    Keywords:

    Iron; Magnetic; Recycling; Slag;

    References:

    [1] Jan Svoboda, Magnetic Techniques of the Treatment of Materials, Kluwer Academic Publishers, 2004.
    [2] R. Dippenaar, Ironmaking and Steelmaking, Vol.32, No.1, pp.35-49, 2005.
    [3] R. J. Fruechan, Making, shaping and treating of steel. Steelmaking and refining volume, 11th edn, The AISE Foundation, pp.1-8, 1998.
    [4] P. J. Koros, Making, shaping and treating of steel. Steelmaking and refining volume, 11th edn, The AISE Foundation, pp.413-429, 1998.
    [5] G. J. W. Kor, P. C. Glaws, Making, shaping and treating of steel. Steelmaking and refining volume, 11th edn, The AISE Foundation, pp.661-713, 1998.
    [6] H. Shen, E. Forssberg, Waste Management, Vol.23, pp.933-949, 2003.
    [7] T. En, K. Harada, T. Ninomiya, IEEE Trans on Magnetics, Vol.Mag-17, No.6, pp.3323-3325, 1981.
    [8] N. Allen, Magnetic and Electrical Separation, Vol.11, pp.155-168, 2002.
    [9] J.Svoboda, T.Fujita, Minerals Engineering, Vol.16, pp.785-792, June 2003.
    [10] PATENT WO/2014/061256, WIPO, 2014.

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    Cite this article as:

    Ishida K and Pretz T. Experimental Study of Efficient Approach to Fine Particle Separation Using Mechanical Stirring by a Fluctuating Magnetic Field. In: Kongoli F, Kleinschmidt G, Pook H, Ohno K, Wu K, editors. Sustainable Industrial Processing Summit SIPS 2015 Volume 2: Gudenau Intl. Symp. / Iron and Steel Making. Volume 2. Montreal(Canada): FLOGEN Star Outreach. 2015. p. 199-214.