About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Ceramic Materials and Processing
|
Presentation Title |
Thermodynamic Analysis of Fe3Si Prepared from Steel Slag by Molten Salt Electrolytic |
Author(s) |
Enze Cui, Hongyan Yan, Ju Mneg, Ning Han, Hui Li, Jinglong Liang |
On-Site Speaker (Planned) |
Enze Cui |
Abstract Scope |
Steel slag contains Fe, Si, Ca, Al, Mg and other metal elements, but its complex mineral phase and large yield lead to its resourceful treatment as an urgent problem. In order to realize the high value-added utilization of steel slag, this paper proposed a new idea of preparing Fe3Si with steel slag in NaCl-CaCl2 by using molten salt electrolysis, and theoretical feasibility was analyzed through thermodynamic study. The results showed that no chemical reaction occurred in the molten salt at 700 ℃~900 ℃, the electroreduction sequence of each metal in the slag was Fe, Si, Al, Mg, Ca, and the theoretical decomposition voltage of Fe and Si electroreduction in the slag is -2.26 V~-1.45 V. Combined with the slag components and Fe-Si phase diagram, the electroreduction of Fe and Si finally formed Fe3Si. Under above thermodynamic conditions, the preparation of Fe3Si from molten salt electrolytic steel slag was theoretically feasible. |
Proceedings Inclusion? |
Planned: |
Keywords |
Powder Materials, Electrometallurgy, Recycling and Secondary Recovery |