LIQUID HOLDUP AND ELECTRIC RESISTIVITY IN AN IRRIGATED PACKED-BED

Liquid holdup and electric resistivity in an irrigated packed bed for scrap melting with a high-frequency induction furnace was examined by using model experiments. In the measurement of liquid holdups, the con tact angle between liquid and particles in the packed bed was controll ed above 90 degrees, and the inner wall of the packed bed was lined wi th a sheet of regularly arranged hemispherical convexity for eliminati ng wall effect. In the measurement of electric resistivity, molten woo d's metal was irrigated to packed beds of graphite or iron particles. As the results, two empirical formulate were obtained as follows; For static and dynamic holdups epsilon(t,s)=0.181 Cp(m)(-0.458)Ga(m)(-0.02 18), )=1.58x1.0(5)Re(m)(0.268)Cp(m)(-2.16)Ga(m)(-0.526) For electric r esistivity [GRAPHICS] ICS]