About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fundamentals of Sustainable Metallurgy and Processing of Materials
|
| Presentation Title |
Advances in hydrogen plasma reduction of iron oxide through solid-state generated microwave power |
| Author(s) |
Daniel Ellis, Vivek Pachchigar, Tanishka Kucheria, Prashant Barnwal, Jazline Rebollar, Brian Jurczyk, R. Mohan Sankaran, Jessica A. Krogstad |
| On-Site Speaker (Planned) |
Jessica A. Krogstad |
| Abstract Scope |
Hydrogen plasma reduction of iron ore is a potential route toward next-generation ironmaking, but challenges remain in forming plasmas efficiently and stably at atmospheric pressure. Here we present a hydrogen plasma for iron oxide reduction powered by microwave generated from solid-state amplifiers. The solid-state technology allows for power transmission via a standard coaxial cable and coupling with simultaneous gas flow generates a stable atmospheric-pressure plasma jet that can be used to treat material downstream. We have demonstrated the effectiveness of this configuration on the reduction of hematite, magnetite and taconite thin films and compressed pellets. The effect of various process parameters, including plasma power, treatment time, distance between the plasma electrode and substrate, and feed composition, were investigated. In addition to the average reduction efficiency, a suite of microstructural characterization tools were deployed to understand the impact of ore impurities and morphologies, while gaining insight on the reaction kinetics. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Extraction and Processing, Characterization |