| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Processing Fundamentals: Thermodynamics and Rate Phenomena
|
| Presentation Title |
Exploring the Evolution of Steel Slag Chemistry: Foaming Properties |
| Author(s) |
Omid Marzoughi, Leili Tafaghodi |
| On-Site Speaker (Planned) |
Omid Marzoughi |
| Abstract Scope |
The properties of steel slag, particularly its foaming characteristics, are critical in optimizing electric arc furnace (EAF) operations. Slag foaming enhances thermal efficiency, reduces tapping time, and minimizes refractory consumption, making it a key process in energy conservation during steelmaking. This study investigates the evolution of steel slag chemistry and its foaming properties, focusing on the effects of carbon and oxygen additions. Utilizing FactSage software 8.0, a series of thermodynamic models were developed to analyze phase equilibria, MgO solubility, and slag viscosity. Results indicated that slag basicity and FeO content significantly influence MgO saturation, which in turn affects slag viscosity and foaming behavior. Viscosity estimations were performed using the Einstein-Roscoe equation, accounting for the presence of solid particles. The addition of carbon and oxygen was found to alter slag composition and foaming characteristics, with optimal conditions identified for effective slag foaming. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Recycling and Secondary Recovery, Modeling and Simulation |