| Physical and mathematical modelling of fluid flow phenomena play an important role in studies of steel quality associated with the various steps in steelmaking and steel processing operations.;To carry out those operations effectively, certain parameters like Residence Time Distribution (RTD), Residual Ratio of Inclusions (RRI), Slag Entrainment and Vortex formation phenomena are generally studied and optimized using various tundish designs, and flow modification devices. These are usually specific to a given plant practice and to a targeted grade of steel.;A full scale physical model of a delta shaped, four strand tundish using water as the simulating fluid for liquid steel was used to study the fluid flow behavior of a 12 t tundish producing aluminium-killed steel billets., The above mentioned parameters were studied to predict the performance of the tundish using two different types of flow modification systems.;In the continuous casting process, the tundish not only serves as an intermediate buffer, but with increasing demands for high quality steel, it has also evolved into a useful reactor for liquid steel refining. It is now a proven fact that a modern tundish is designed to carry out different metallurgical operations such as inclusion separation and floatation, alloy trimming, superheat control, calcium doped inclusion modification, thermal and particulate homogenization. |
