| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Thermodynamic Analysis of Fe-Al-Si Powder Prepared from Steel Slag by Molten Salt Electrolytic |
| Author(s) |
Bo Yuan, Hongyan Yan, Enze Cui, Ning Han |
| On-Site Speaker (Planned) |
Hongyan Yan |
| Abstract Scope |
Steel slag contains Fe, Al, Si and other valuable metals. It has complex mineral phase and large stock,utilization of steel slag is urgent. To realize high value utilization of steel slag, an idea of preparing Fe-Al-Si alloy from in NaCl-KCl by molten salt electrolysis was proposed. The thermodynamic behavior of steel slag in the process of electrolysis was analyzed theoretically. The results showed that molten salt could not react with steel slag in the absence of electricity. In the process of electrification, the reduction sequence of main elements in steel slag was Fe, Si and Al. Some by-products of potassium aluminate, sodium aluminate, sodium silicate and potassium silicate were produced during electrolytic process. It was determined that the voltage range of the electrolytic process at 700~900℃ was -2.57V ~ -3.37V. Under the above thermodynamic conditions, the alloy phases prepared by electrolysis of steel slag were Fe3Si and Fe3SixAl1-x theoretically. |
| Proceedings Inclusion? |
Planned: |