The solidification behavior of slags is a complex subject due to the varied chemical compositions of steelmaking slags. However, recent experimental developments, using the fact that slags that do not contain significant quantities of transition metal oxides are transparent, has allowed the development of optical techniques to observe slag solidification behavior. While “curiosity based research” was the initiator of such studies, it has quickly become apparent that observation of the phenomenon of slag solidification has lead to a much deeper understanding of the role of slag solidification behavior in the process of the continuous casting of steel. In this paper findings from observation of slag solidification will be discussed with reference to developments in continuous casting.
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