Measuring Packing Fraction Distribution in Cake Filtered under Constant Pressure and Quantitative Estimation from Measured Filtrate Volume

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  • MORI Takamasa
    Department of Molecular Design and Engineering, Nagoya University
  • KIM Hyo-Jung
    Department of Molecular Design and Engineering, Nagoya University
  • ATO Kenjiro
    Department of Molecular Design and Engineering, Nagoya University
  • TSUBAKI JunIchiro
    Department of Molecular Design and Engineering, Nagoya University

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  • 定圧ろ過におけるケーク内充填率分布のろ液量からの推算

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The particle-packing structure of alumina slurry was evaluated by constant pressure filtration. The cake forming behavior were classified into four patterns by plotting the resistance of the formed cake as a function of the particle volume in the cake; the plots were (a) a straight line, (b) a convex curve, (c) a concave curve, and (d) the combination of a concave curve and a flat line. A method of a estimation of the distribution of packing fraction in the formed cake was proposed. The distribution of packing fraction in the formed cake could be calculated unless the average packing fraction of the cake increased as the filtration proceeded ((c) concave curve). It was found that the distribution of packing fraction estimated by the proposed method was in good accordance with the experimental value obtained by γ-ray transmission measurement.<br>

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