About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fundamentals of Sustainable Metallurgy and Processing of Materials
|
| Presentation Title |
Narrowing the Knowledge Gaps for Modelling Direct Reduction of Iron Oxide Pellets |
| Author(s) |
Ömer Büyükuslu, Fabrice Yang, Anna L. Ravensburg, Dierk Raabe, Moritz to Baben |
| On-Site Speaker (Planned) |
Ömer Büyükuslu |
| Abstract Scope |
Direct reduction of iron (DRI) with hydrogen offers a green pathway for producing steel from primary sources, targeting an industry responsible for approximately 8% of anthropogenic CO<sub>2</sub> emissions.
The reduction of iron oxide pellets using hydrogen-bearing gases is inherently complex due to solid–gas reactions, where kinetics are governed by the interplay between gas transport dynamics and chemical redox reactions. Physically sound reaction models are therefore essential to accurately predict reduction behavior under varying structural and process conditions.
However, kinetic models in the literature show large discrepancies, particularly in reported activation energies for different stages of iron oxide reduction. A key reason for this scatter appears to be poor fitting procedures and inadequate model formulations, leading to overfitting.
In this work, we address this challenge by proposing a physically consistent pellet-scale DRI reduction model and an experimental design strategy that minimizes overfitting. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Iron and Steel, Computational Materials Science & Engineering |