Refractory for steel casting plate for sliding nozzle device and method for producing refractory for steel casting

摘要

An object of the present invention is to suppress breakage of a refractory containing metal aluminum. The refractory of the present invention is a refractory for casting a steel comprising 1 to 10% by mass of free carbon, 1 to 15% by mass of metallic aluminum, and the remainder of the refractory material containing a metal oxide, Wherein the metal aluminum content in the steel material is defined as Al mass%, an apparent porosity is P%, and a volume specific gravity is D, it is a refractory for casting steel. 0.31 x Al (P-4) / D ... Equation 1