Abstract: Based on the actual experimental data of a 210 t converter in a steel enterprise in Shandong Province, the impact of introducing CO₂ into the converter steelmaking process on smelting performance and carbon emissions was explored. The results indicate that the CO₂ injection process can effectively improve the dephosphorization rate of the converter, reduce the end-point carbon oxygen product, increase the recovery and calorific value of the converter gas, and significantly optimize the resource utilization efficiency. And it effectively reduces the generation of solid waste. In terms of carbon reduction, compared with conventional processes, the converter CO₂ top and bottom combined blowing process reduces the carbon emissions per ton of steel by 8.5% to 11.6%. The CO₂ top and bottom combined blowing steelmaking process not only improved smelting efficiency and economic benefits, but also had significant advantages in low-carbon transformation, providing an effective path for the steel industry to achieve green development.

Key words: CO₂ top and bottom combined blowing, converter steelmaking, carbon emissions, industrial application