REFRACTORY HAVING HIGH RESISTANCE TO CORROSION AND SPALLING AND MANUFACTURING METHOD THEREOF

摘要

An alumina-zirconia electrofusing material whose chemical composition consists of about 30-75 wt. % Al2O3 and about 25-70 wt. % ZrO2 is provided in an amount of about 5-50 wt %, and this electrofusing material is mixed with other materials, and a resultant mixture is press-shaped and fired to produce a slide gate refractory. In order to further improve resistance to corrosion and spalling, particle diameters of the electrofusing material are continuously distributed in a range from about 0.1 mm to about 2.5 mm.