Spinel-magnesia-carbon brick for vacuum degassing apparatus and vacuum degassing apparatus lining this on the side wall of lower tank

摘要

An object of the present invention is to provide a spinel-magnesia-carbon brick excellent in corrosion resistance against slag having a high content of FeO or FeO generated by blowing oxygen into the vacuum degassing apparatus, and a vacuum degassing apparatus using the same on the side wall of the lower tank. provide. The spinel is 65% by mass to 98% by mass, the magnesia is 1% by mass to 30% by mass, the graphite is 0.1% by mass to 15% by mass, and the aluminum and / or aluminum alloy is 0.1% by mass. A vacuum degassing apparatus in which a spinel-magnesia-carbon brick containing at least 2.0% by mass is lined on the side wall of the lower tank of the vacuum degassing apparatus. [Selection] Figure 1