ON THE EQUILIBRIUM OF CARBON AND OXYGEN IN MOLTEN IRON. (First Report)

Abstract

Author treats the equilibrium of Fe-C-O system at steel making temperatures in the application of thermodynamics comparing with the experimental data obtained by S. Matoba.As the result of his works, it was proved that the two-equilibriums, FeO(Fe)+CO Fe+CO₂and C(Fe)+CO₂ 2CO, should he considered simultaneously as the carbon-oxygen equilibrium in steel making process instead of FeO(Fe)+C(Fe) Fe+CO, as was usually accepted. Andproduct of a concentration of FeO and C in the molten iron was found to be the function of the partial pressure of CO"x" in the gaseous phases, and the relationship between this product and the x was straight line and the slope of this straight line became smaller as the temperature inceases.