THE INFLUENCE OF SLAG ON DEGRADATION OF TUNDISH WORKING LINING

Abstract

This paper is focused on the influence of the slag formed by covering and refining powders on lifetime, respectively on the wearing of the working lining of tundish. The experimental part deals with the influences of used covering and refining powders on the working. Besides the influence of covering and refining powders is also considered the influence of the ladle well filler and slag from the ladle. The wear of the lining is evaluated using the change in dimensions of working lining in the range of slag mark on particular tundishes. Based on chemical composition of the slag and thermodynamics are modeled chemical reactions causing corrosion of the refractory material. The experimental part contains also comparison of measured chemical composition of the slag during the sequence with material balance.