Application of Exhaust Gas Analysis in Investigating Bath Temperature in BOF

By analyzing the post combustion rate out and inside of the converter in combine with applying mass balance and reaction equilibrium theory,the comparison between the results of experiment and model calculation on carbon content and temperature is conducted,and the following conclusions are obtained:(1) the precise estimation on carbon content in bath can be implemented by mass balance when scrap and exhaust gas well sealed;(2) the post combustion rates out and in-side of the converter are high in the prophase,low in the intermediate stage and again high in the anaphase;(3) the temperature of bath can be estimated by reaction equilibrium theory in intermediate stage and anaphase.