The taphole refractory bricks are made of fused large crystalline magnesia, matched with high-purity graphite, added with metal antioxidants, and phenolic resin as the bonding agent, through cold isostatic pressing (integral tapping) or machine pressure (split tapping) Mouth) molding. The product has the characteristics of good oxidation resistance, high strength, good corrosion resistance, easy replacement and long life. Gunning material