| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
New Directions in Mineral Processing, Extractive Metallurgy, Recycling and Waste Minimization: An EPD Symposium in Honor of Patrick R. Taylor
|
| Presentation Title |
Decarbonizing Steelmaking: Nanoscale Mechanisms in H2-Based Reduction of Iron Oxides |
| Author(s) |
Lauren Y. Moghimi, Xueli Zheng, Subhechchha Paul, Fan Zhang, Leora Dresselhaus-Marais |
| On-Site Speaker (Planned) |
Lauren Y. Moghimi |
| Abstract Scope |
Steel manufacturing today is responsible for 8% of global CO2 emissions and is an industry that is difficult to decarbonize. Of the 4 gigatonnes of CO2 generated in steelmaking, 64% originates from iron ore reduction. Hydrogen-based direct reduction (HyDR) is a carbon-neutral approach to reduce iron ores to produce steel, far below iron’s melting point. Many studies have modeled the kinetics of HyDR of iron oxides; however, significant variation demonstrates a highly sensitive system, arising from competition between chemical driving forces. To unify these kinetics over the full extent of reactor-relevant conditions requires detailed multiphysics kinetics models. We will present our work using in-situ X-ray measurements to quantify the mechanisms and associated kinetics in H2-based reduction of Fe3O4 and our application of that data to build new kinetics models. From our work, we can begin to describe the nanoscale reduction mechanisms that underlie the kinetics of reactor-scale HyDR. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Extraction and Processing, Iron and Steel, Sustainability |