Thermodynamic and kinetic modelling of solid-liquid phase transformations in multi-component slag systems
Research output: Thesis › Doctoral Thesis
Standard
2023.
Research output: Thesis › Doctoral Thesis
Harvard
APA
Vancouver
Author
Bibtex - Download
}
RIS (suitable for import to EndNote) - Download
TY - BOOK
T1 - Thermodynamic and kinetic modelling of solid-liquid phase transformations in multi-component slag systems
AU - Ogris, Daniel
N1 - no embargo
PY - 2023
Y1 - 2023
N2 - In the course of this thesis, solid-liquid phase transformations in metallurgical slag systems are investigated. A thermodynamic software package is developed that can be used together with a thermodynamic database to calculate thermochemical equilibrium conditions and simulate the kinetics of solid-liquid phase transformations in multi-component, multi-phase systems. In order to gain a better understanding of the rate-determining processes, key experiments using High-Temperature Confocal Scanning Laser Microscopy (HT-CSLM) are performed. The experimental observations are complemented and interpreted by numerical modelling. The dissolution kinetics of various oxide particles in multi-component slags is predicted for the case that the interdiffusivity matrix is known. The combination of thermodynamic modelling and key experiments reveals the physical processes limiting the kinetics of the solid/liquid phase transformations. The kinetics of the dissolution of solid particles in multi-component slags appears to be diffusion controlled, where convection is considered by a decreased boundary layer thickness.
AB - In the course of this thesis, solid-liquid phase transformations in metallurgical slag systems are investigated. A thermodynamic software package is developed that can be used together with a thermodynamic database to calculate thermochemical equilibrium conditions and simulate the kinetics of solid-liquid phase transformations in multi-component, multi-phase systems. In order to gain a better understanding of the rate-determining processes, key experiments using High-Temperature Confocal Scanning Laser Microscopy (HT-CSLM) are performed. The experimental observations are complemented and interpreted by numerical modelling. The dissolution kinetics of various oxide particles in multi-component slags is predicted for the case that the interdiffusivity matrix is known. The combination of thermodynamic modelling and key experiments reveals the physical processes limiting the kinetics of the solid/liquid phase transformations. The kinetics of the dissolution of solid particles in multi-component slags appears to be diffusion controlled, where convection is considered by a decreased boundary layer thickness.
KW - steelmaking
KW - multi-component slags
KW - dissolution
KW - CALPHAD
KW - thermodynamics
KW - modelling of phase transformations
KW - steelmaking
KW - multi-component slags
KW - dissolution
KW - CALPHAD
KW - thermodynamics
KW - modelling of phase transformations
U2 - 10.34901/mul.pub.2023.285
DO - 10.34901/mul.pub.2023.285
M3 - Doctoral Thesis
ER -
