About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Study on the Interface Behavior Between Refining Slag and RH Insertion Refractory Castables |
| Author(s) |
Fushen Li, Yuying Lin, Aoshun Yuan, Wenshuai wang, Yu Wang, Xiaoping Liang |
| On-Site Speaker (Planned) |
Fushen Li |
| Abstract Scope |
To analyze the slag adhesion mechanism at the interface between RH insertion refractory castables and refining slag, this study conducted interfacial reaction experiments between slag and refractory castables by combining high-temperature static crucible experiments with thermodynamic simulation calculations. The results indicate that increasing alkalinity (R), MgO, and CaF2 content reduces viscosity and activation energy for viscous flow. Lower viscosity diminishes viscous adhesion at the interface, demonstrating that adjusting slag composition effectively modulates slag adhesion behavior. Significant interfacial interactions exist between slag and refractory castables, forming a transition layer approximately 20–30 μm thick. This layer thins with increasing alkalinity, indicating weakened interactions and suggesting that elevated alkalinity helps mitigate slag adhesion. Thermodynamic calculations confirm that the reaction between the castables and slag produces high-melting-point phases, including Ca2Mg2Al28O46, CAF6, CAF2, and spinel phases. These phases enhance the anchoring effect on the bonded material under thermal cycling conditions, promoting slag adhesion development. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Other, |