Scrap dissolution effect in BOF converter process

Abstract

A thermodynamic computational model was formulated to depict the amalgamated (top and bottom) blown basic oxygen steelmaking process involving scrap metal and lime dissolution. The model encompasses multifarious factors, encompassing scrap chemistry, temperature distribution, and varied lime sizes within the furnace. Analysis of the model's outcomes underscores the substantial impact of scrap on temperature regulation and slag FeO content. Elevated carbon proportions in the scrap correspondingly correlate with diminished carbon elimination rates and heightened FeO content within the slag, as projected by the model. Furthermore, the model's projections of transient metal compositions harmonize with empirical data from the plant. These findings substantiate the applicability of such models in optimizing steelmaking processes and anticipating the ultimate product's quality.