Insights Thermodynamic in Basic Oxygen Steel Making Process

In this study, a thermodynamics model was developed for the basic oxygen steelmaking (BOS) process, which integrates both top and bottom blowing techniques. The primary objective was to enhance the understanding of refining kinetics within the BOS, which is significantly influenced by the formation of an emulsion zone that increases the interfaces between slag and metal. Several critical parameters, including oxygen flow rate, lance height, and initial hot metal composition, were investigated to optimize the overall steel refining process. A combination of mathematical modeling and experimental data was employed to simulate the thermal and chemical interactions occurring during the refining phase. Results indicated that the newly proposed thermodynamic model effectively predicts the heat input and output, as well as the specific behavior of carbon, silicon, manganese, and phosphorus during the refining process. By accurately modeling these phenomena, this study contributes to the enhancement of process efficiency and the improvement of steel quality. Findings from this research offer significant insights for practitioners aiming to optimize the BOS process through better understanding of thermodynamic principles at play.