Equilibria between CO₂-CO Gas Mixtures and Iron-Silicate Slags

Abstract

Conditions of the attainment of equilibria between CO₂-CO gas mixtures and iron-silicate slags wereinvestigated in regard to grinding procedures in chemical analyses of slags and emf measurements using the magnesi astabilized zirconia electrolyte.
It was found that the analytical error in determining the ferrous and ferric oxides in slags increased because of oxidation of samples during grinding in an agate mortar.It was also found that, in the cases of experiments in which molten slags were equilibrated with CO₂-CO gas mixtures by permitting gas mixtures to flow over the melt, an equilibrium was easily attained by oxidizing the slags with the gas mixtures, whereas it took too long a time for an equilibrium to be established by reducing the slags.