Influence of reduction on the thermodynamic parameters of the gas flux in blast furnaces

Abstract

On the basis of operational data from three blast furnaces, the relation between the reduction processes and the thermodynamic parameters of the gas flux is established. Their influence on the mechanical energy is also determined. This relationship is due to mass-transfer processes resulting in the replacement of the light reducing gases CO and H₂ by heavy CO₂ and H₂O. The mass-transfer processes, together with the temperature and pressure, increase the density gradient of the gas flux to 23.5–44.8 g/m³ m. That increases the force propelling the gas flux by 314.9–465.8 J/m³.