| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Thermodynamics and Kinetics of Alloys II
|
| Presentation Title |
Preparation of Fe-Si Alloy by Molten Salt Electrolysis of Fe2SiO4 Simulating Copper Slag |
| Author(s) |
Jinglong Liang, Bo Cui, Hui Li, Dongxing Huo, Chang Liu, Yu Yang |
| On-Site Speaker (Planned) |
Bo Cui |
| Abstract Scope |
Copper slag contains high levels of metal elements such as iron and silicon, which will cause a waste of resources and environmental pollution if not handled in time. In order to study the reduction process of the main component Fe2SiO4 in copper slag and the reduction process of adding Fe3O4 according to the proportion of copper slag composition, the feasibility of recovering Fe-Si alloy by the molten salt method was analyzed by thermodynamic calculation. The results show that Fe2SiO4 and Fe3O4 in the copper slag are theoretically reduced to monomeric Fe and Si by electrolysis at temperatures of 550-950℃ and electrolytic voltages of 1.47-3.23V, while the NaCl-CaCl2 molten salt is not electrolyzed. Fe-Si alloy can be prepared by electrolyzing copper slag in NaCl-CaCl2 molten salt at an electrolytic voltage of 3.2V and a temperature of 800℃ for 12 h. This process study can realize the resource utilization of copper slag. |
| Proceedings Inclusion? |
Planned: |