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Abstract
The minimisation of the duration of ladle furnace treatment on the ladle furnace station and transferring part of the technological operations to the tundish might intensify the steel production process. The present paper reports results concerning a new method of feeding alloy additions intended to be used during the continuous casting process. For continuous casting tundishes, it seems possible and rational to correct the chemical composition of steel or to feed low melting point microalloys and non-metallic inclusion modifiers. The object of investigation was a single strand tundish. Computer simulation of the liquid steel flow and alloy addition behaviour in turbulent motion conditions was done using the Ansys-Fluent computer program. The numerical model employed in the computations was verified by industrial (non-isothermal conditions) and laboratory (isothermal conditions) tests. In all tundish equipment variants, except for variant no. 3, a reduction in the mixing time was achieved as against the tundish currently used in industrial conditions.