Refractory slag band

C - Chemistry – Metallurgy – 04 – B

Patent

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Details

C04B 35/106 (2006.01)

Patent

CA 2715753

The present invention resides in a refractory composition for use as a cold start slag band. The composition com-prises an admixture of partially stabilised zirconia and/or fully stabilised zirconia and monoclinic zirconia, characterised in that the proportion of monoclinic relative to the total zirconia content is at least 40% by weight. The invention also resides in a slag band formed from the composition, a submerged entry nozzle incorporating the slag band and a method of forming such a sub-merged entry nozzle.

La présente invention concerne une composition réfractaire destinée à être utilisée comme bande de laitier de démarrage à froid. La composition comprend un mélange de zircone partiellement stabilisée et/ou de zircone complètement stabilisée et de zircone monoclinique, caractérisée en ce que la proportion de zircone monoclinique par rapport à la quantité totale de zircone est égale à au moins 40 % en poids. L'invention concerne également une bande de laitier formée de la composition, une buse d'entrée immergée comprenant la bande de laitier et un procédé de formation d'une telle buse d'entrée immergée.

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