Development of a Laser Optical Sensor for Measuring Bubble Characteristics in an Oily Liquid Bath

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著者

    • IGUCHI Manabu
    • Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University
    • KAJI Masuo
    • Department of Mechanical Engineering, School of Biology-Oriented Science and Engineering, Kinki University

抄録

Oily liquids such as silicone oil and normal pentane have been commonly used as the model for top slag to investigate the role of the top slag on the mixing in the bath of various refining processes. An electroresistivity probe is a powerful tool for measuring bubble characteristics in a bath filled with a liquid of high electrical conductivity and it is extensively used in water model experiments. Unfortunately, the electrical conductivity of oily liquids is very low, and accordingly, the electroresistivity probe looses its validity in oily liquid baths. Considering these circumstances, a two-channel laser optical sensor was developed to measure the bubble characteristics in oily liquid baths. Gas holdup, mean bubble rising velocity and mean bubble chord length were measured accurately, whereas measurement of bubble frequency was disturbed by Doppler signals originating from the bubble surface.

収録刊行物

  • ISIJ international  

    ISIJ international 38(8), 802-806, 1998-08-15 

    The Iron and Steel Institute of Japan

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