ALUMINUM OXYCARBIDE COMPOSITION AND PROCESS FOR PRODUCING SAME, AND REFRACTORY

摘要

The present invention provides an aluminum oxycarbide composition in which the Al4O4C can be inhibited from oxidizing during use and the effect of the Al4O4C can be maintained for a long period. This aluminum oxycarbide composition has crystals of Al4O4C. When any cross-section of the aluminum oxycarbide composition is examined, the crystals of Al4O4C have an average diameter, calculated through conversion of the cross-sectional area of each Al4O4C crystal to a circle, of 20 µm or larger. This aluminum oxycarbide composition can be produced by melting a carbonaceous raw material and an alumina-based raw material in an arc furnace and thereafter cooling the melt in the arc furnace.