PURPOSE: To improve thermal shock resistance, bending strength and oxidation resistance by using SiC powder and specified Si powder as essential components.

CONSTITUTION: Starting material for SiC-based refractories is obtd. by mixing 60-90wt.% SiC powder with 8-25wt.% Si powder of 3-15μm average particle size having oxygen remaining on the surface or in the interior by ≤1.5 pts.wt. per 100 pts.wt. Si powder and clay. Water and a binder are added to the starting material and they are kneaded and compression-molded. The resulting molded body is dried and fired in an inert gaseous atmosphere.