The requirements for the controllability of metallurgical processes are increasingly becoming the
focus of both industry and research. Advances in this field of research not only impact the stability
of processes but often also influence the quality of the final product. One important way to examine
processes in-depth, and thus show potential for improvement, is to describe them using physicsdriven
models. In metallurgy, thermodynamic and kinetic descriptions of interactions between
individual components of a system are often used to describe and analyse important metallurgical
phenomena across the entire process. However, for the creation of physics-based models, boundary
conditions and process variables must be implemented to enable a description that is as realistic as
possible. The collection and generalisation of boundary conditions and process variables is,
therefore, an important step towards functional models.
The focus of this study is the determination of mass transfer coefficients between all components in
a steel/slag/refractory system. For this purpose, experimental and theoretical methods are applied.
Laboratory scale experiments are carried out in an induction furnace, and the mass transfer
coefficients of the defined steel/slag/refractory system are calculated from changes in the chemical
composition of the various components. Additionally, a calculation of the mass transfer coefficients
based on dimensionless quantities is carried out. By comparing the values of the mass transfer
coefficients determined theoretically and those determined experimentally in the trials, the suitability
of the calculation is examined. The collection of mass transfer coefficients provides essential findings
for future kinetic descriptions of inclusion modification based on the effective equilibrium reaction
zone (EERZ) approach.