About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Energy Technologies and CO2 Management: Resource Efficient Processes
|
| Presentation Title |
Study on synergistic reduction of iron ore by biochar and hydrogen |
| Author(s) |
Huiqing Tang, Heng Li |
| On-Site Speaker (Planned) |
Huiqing Tang |
| Abstract Scope |
To produce zero-carbon steel, hydrogen and biochar are increasingly favored as reductants in ironmaking. In this study, the reduction behavior of biochar–iron ore composite pellets was investigated. The pellets were prepared with 90 wt.% Fe₂O₃ and 5 wt.% biochar. Isothermal reduction tests under a hydrogen atmosphere revealed that at 1373 K, the metallization rate reached 82.03%, with the biochar gasification fraction exceeding 98%. The metallization rate was found to depend on the hydrogen concentration in the atmosphere. Microstructural analysis of samples from non-isothermal reduction tests indicated that the microstructure evolution of the pellets proceeded through three distinct stages: (1) pore formation at 1073–1173 K, (2) iron agglomeration and densification at 1173–1273 K, and (3) liquid-phase sintering at 1373 K. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Pyrometallurgy, Sustainability |