| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2025: In-Situ Characterization Techniques
|
| Presentation Title |
Effects of SiO2 and MgO on Hydrogen Reduction of Fe2O3 |
| Author(s) |
Wanlong Fan, Zhiwei Peng, Kangle Gao, Guanwen Luo, Ran Tian, Lingyun Yi, Mingjun Rao |
| On-Site Speaker (Planned) |
Wanlong Fan |
| Abstract Scope |
The effects of SiO2 and MgO on the hydrogen reduction behavior of Fe2O3 at 700 °C for 1 h were evaluated, based on the thermodynamic analysis and experimental validation. It was demonstrated that SiO2 exerted a more pronounced inhibitory effect on the reduction of Fe2O3 compared with MgO. When the SiO2 addition increased from 0 wt% to 4 wt%, the conversion percentage of Fe2O3 decreased significantly, primarily attributed to the partial conversion of intermediate product of Fe2O3, namely FeO, to Fe2SiO4 and MgFeSiO4. With further increase in SiO2 addition, there was no significant change of conversion percentage of Fe2O3 due to the limited reactivity of SiO2 at the temperature, confirmed by the thermodynamic calculations. When the MgO content increased from 0 wt% to 10 wt%, the conversion percentage of Fe2O3 decreased continuously, associated with the generation of MgFeSiO4. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Extraction and Processing, Process Technology |