Abstract
An analytical study has been made on the metal side mass transfer in a slag-metal reaction system with gas injection stirring. Considerations have been given of the relation between metal side mass transfer and the fluid flow in the vicinity of the slag-metal interface. On the basis of a theory of turbulent phenomena, metal-side mass transfer coefficients are derived as functions of gas injection stirring conditions. The theoretical equations are rearranged to dimensionless correlation equations.The mass transfer data obtained by the authors from model studies for molten slag-Cu reaction system of Si oxidation at 1250°C and the available results of model studies at low temperature (aqueous solution-amalgam system at room temperature and molten salt-molten Pb system at 450°C) are correlated successfully by the equations obtained in the present study. It is found that the dimensionless correlation equations obtained in the present study are applicable to the data of ladle desulfurization.
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