Reaction Mechanism of Bottom Blowing CO<sub>2</sub> with Molten Steel in Converter

In the current study, reaction behavior between bottom blowing CO2 and molten steel at different converter stages was studied by thermodynamic calculation. At initial stage, reacts with [C] before turning point then [Si] simultaneously after that. completely twice volume of CO generates middle stage. The ratio gradually decreases final stage due to reacting [Fe] residual unreacted increases. Then effect gas type intensity on [C]·[O] value T.Fe content in slag were industrial trials a 300 t converter. When Ar is blown partial pressure increasing intensity, while opposite result obtained when CO2. into should be switched Ar, time controlled early 12 minutes avoid slag. order improve rate [C], it necessary for during high-speed decarburization period 0.7 mass% 3.3 5 minutes.