1993 Volume 33 Issue 7 Pages 728-734
As a fundamental study on the melting process of solid bodies immersed in a molten metal bath, cold model experiments were done to reveal the effect of bottom gas injection on the mass transfer coefficient from a solid body. The mass transfer coefficient was measured by means of the electro-chemical method. Nitrogen gas and aqueous H2SO4 and FeSO4 solution were employed, and gas flow rate and inner diameter of nozzle were changed over a wide range. Spheres of three different diameters and a flat plate made of platinum were chosen as representative bodies. Empirical correlations of mass transfer coefficient from these bodies were derived as functions of Reynolds number, Schmidt number and turbulence intensity.
