MATHEMATICAL MODEL OF PIG IRON FORMATION KINETICS IN REDUCING IRON FROM HEMATITE USING SOLID CARBON
DOI:
https://doi.org/10.34185/1991-7848.itmm.2026.01.051Keywords:
magnetite, wüstite, carbon monoxide, carburization, iron carbide, Stefan problem, Duzinberre methodAbstract
This work presents a mathematical model for the stepwise reduction kinetics of iron from a single piece of iron ore with solid carbon. The model makes it possible to investigate the kinetics of both individual stages of iron oxides and iron carbide reduction, as well as the overall process of liquid pig iron production from hematite using carbon monoxide gas and solid carbon as reducing agents. The possibility is provided to simulate the size of hematite ore pieces and the process temperatures, which consist of sequential stages of indirect reduction from hematite to lower iron oxides (magnetite and wüstite) and direct reduction from wüstite to iron carburized to the state of pig iron.
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