Refractory article incorporating a cold slag band

摘要

The present invention relates to a refractory composition for use as a cold start slag band, a cold start slag band made from the composition and refractory articles such as submerged entry nozzles incorporating the slag band. The composition comprises an admixture of partially stabilised zirconia and/or fully stabilised zirconia and monoclinic zirconia and is characterised by the proportion of monoclinic relative to the total zirconia content being at least 40 % by weight. The composition permits the manufacture of refractory articles for use in steel manufacture which are highly resistant to thermal shock, thereby avoiding the necessity of preheating prior to use.