Observation of Molten Slag Surface under Gas Impingement by X-ray Computed Tomography

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著者

    • KASAI Eiki
    • Department of Chemical Engineering, Graduate School of Engineering, Osaka Prefecture University

抄録

Observation of molten slag at 1673 K was carried out by X-ray Computed Tomography (X-ray CT) to make clear the shape of slag surface where gas was downward blown. X-ray CT scanning of molten slag heated in an electric furnace was conducted to take an image of its cross section. In order to examine the effects of gas momentum supplied on the surface shape, three kinds of inert gases, Ar, He and N<sub>2</sub>, were employed as the blowing gas under the several conditions of gas flow rate and gas pipe diameter.<br>The obtained X-ray CT images successfully visualized the cross section of molten slag. The boundary line between gas and slag in the image was concave under the gas blowing, indicating a formation of depression on the slag surface by gas impingement. The concave boundary is completely different from the parabolic shape conventionally evaluated. The depression became larger, not only in depth but also in width, with increasing gas flow rate, whereas drastically smaller with increasing gas pipe diameter. In addition, larger depth was brought by impingement of larger molecular (atomic)-weight gas. These results were well explained by the conservation law of momentum between gas and slag. It was also revealed that the increment in the boundary line caused by formation of depression, which corresponds to an increase in the interfacial area, is in proportion to the depression depth in the range of more than 2 mm, and was independent of the pipe diameter and gas species.

収録刊行物

  • ISIJ international

    ISIJ international 40(10), 958-963, 2000-10-15

    The Iron and Steel Institute of Japan

参考文献:  26件中 1-26件 を表示

  • <no title>

    KASAI E.

    ISIJ Int. 37, 1031, 1997

    被引用文献12件

  • <no title>

    AKIYAMA T.

    ISIJ Int. 40, 286, 2000

    被引用文献3件

  • <no title>

    COLLINS R. D.

    Brit.J.of Appl.Phys. 5, 22, 1954

    被引用文献1件

  • <no title>

    BANKS R. B.

    J.Fluid Mech. 15, 13, 1963

    被引用文献7件

  • <no title>

    OLMSTEAD W. E.

    J.Fluid Mech. 19, 561, 1964

    被引用文献2件

  • <no title>

    QIAN F.

    Metall.Mater.Trans. 27B, 911, 1996

    被引用文献1件

  • <no title>

    TURKDOGAN E. T.

    Chem.Eng.Sci. 21, 1133, 1966

    被引用文献5件

  • <no title>

    Rosler R. S.

    J.Fluid Mech. 31, 163, 1968

    被引用文献1件

  • <no title>

    SHIMADA M.

    Tetsu-to-Hagane 57, 1764, 1971

    被引用文献1件

  • <no title>

    MUCHI I.

    Tetsu-to-Hagane 53, 424, 1967

    被引用文献2件

  • <no title>

    ITO S.

    Tetsu-to-Hagane 55, 1164, 1969

    被引用文献1件

  • <no title>

    TAGUCHI I.

    Tetsu-to-Hagane 71, 1685, 1985

    被引用文献3件

  • <no title>

    AIBA Y.

    Tetsu-to-Hagane 71, 1692, 1985

    被引用文献1件

  • <no title>

    TAGUCHI I.

    Tetsu-to-Hagane 72, 1629, 1986

    被引用文献1件

  • <no title>

    INAZUMI T.

    Tetsu-to-Hagane 78, 1061, 1992

    被引用文献3件

  • <no title>

    KASAMA S.

    Tetsu-to-Hagane 78, 1069, 1992

    被引用文献5件

  • <no title>

    NAKANO M.

    Tetsu-to-Hanage 82, 111, 1996

    被引用文献1件

  • <no title>

    NUSHIRO K.

    Tetsu-to-Hagane 83, 473, 1997

    被引用文献3件

  • <no title>

    OYAMA N.

    2nd ICSTI/57th Ironmaking Conf.Proc. 109, 1998

    被引用文献1件

  • <no title>

    KATO M.

    Measurement of Properties for Slag and Metal at High Temperature 45, 1986

    被引用文献1件

  • <no title>

    BONI R. E.

    J.Met. 8, 59, 1956

    被引用文献1件

  • <no title>

    MUCHI I.

    Tetsu-to-Hagane 52, 1079, 1966

    被引用文献1件

  • <no title>

    KAWAKAMI K.

    Tetsu-to-Hagane 52, 1483, 1966

    被引用文献1件

  • <no title>

    SHIMADA M.

    Seitetsu-Kenkyu 266, 8855, 1969

    被引用文献4件

  • <no title>

    CHESLAK F. R.

    J. Fluid Mech. 36, 55, 1969

    DOI 被引用文献9件

  • Analysis of Pore Combination in Sintering by Hot Stage X-ray computerized Tomographic Scanner

    NUSHIRO Kouichi , OYAMA Nobuyuki , IGAWA Katsutoshi

    ISIJ international 39(12), 1239-1244, 1999-12-15

    J-STAGE DOI 参考文献7件 被引用文献3件

被引用文献:  3件中 1-3件 を表示

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