MASS-TRANSFER FROM A SOLID BODY IMMERSED IN A CYLINDRICAL BATH WITH BOTTOM GAS INJECTION

As a fundamental study on the melting process of solid bodies immersed in a molten metal bath, cold model experiments were done to reveal th e 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 bodie s were derived as functions of Reynolds number, Schmidt number and tur bulence intensity.