Charactristics of post-combustion and heat transfer both into the iron bath and into the furnace wall during the decarburization were studied using a 10 T ladle-type test furnace.
From the results of heat balances, It was made clear that about 2030% of the heat of CO to CO2 combustion was not efficient for heating the bath and results in raising the exhaust gas temperature.
The amount of heat transfered into the wall from the high temperature gas was estimated both by the measurement of refractory temperature and by the mathematical calculations.As for the obvious increase in the transfered heat at higher post-combustion ratio, the observed value coincided well with calculated one.
