METHOD FOR ESTIMATING SECONDARY COMBUSTION RATIO OF CARBON IN CONVERTER FOR COMPOSITE BLOWING AND METHOD FOR ESTIMATING CARBON CONCENTRATION OF MOLTEN STEEL

摘要

PURPOSE: A method for estimating a secondary combustion ratio of carbon by obtaining the amount of CO and CO2 gas much more precisely is provided, which can estimate the carbon concentration of molten steel much more precisely. CONSTITUTION: This estimating method comprises the steps of: obtaining a suction rate of air; obtaining the amount of CO and CO2 gas using the obtained air suction rate; and obtaining a secondary combustion ratio using the obtained the amount of CO and CO2.