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.

KEYWORDS:

• Decarburization
• scrap dissolution
• scrap dissolution time
• temperature profile
• FeO content
• factsage
• Lime dissolution
• input energy

Acknowledgements

The authors would like to thank JSW Steel Ltd., Toranagallu, Bellary, India, for contributing the plant data to confirm the model results developed in this study.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Conflicts of interest

The corresponding authors state that there is no conflict of interest.

Data availability statement

The data that support the findings of this study are available from the corresponding authors upon suitable request.

Additional information

Funding

No funding is available for this work.