A new model is therefore under development that combines CFX-4 with the ChemApp software package. At each CFX-4 cell, the predicted temperature, pressure and concentrations are passed to ChemApp, which calculates the equilibrium phases present based on a free energy minimisation routine. Initially, inclusion formation during the tapping, alloying and stirring processes is being studied. The effect of slag coatings on refractory linings on inclusion population is being added as information concerning the erosion and the physical and chemical properties of the slags and refractories become available. The model will provide British Steel with a powerful tool for the optimisation of process routes for clean steel production.
Calculated temperature contours and velocity vectors at the time of completion of filling a ladle.
Click thumbnail for a large version of the image. Calculated silicon mass fraction contours in the liquid steel. Click thumbnail for a large version of the image.