초록 ▼

Fused AZS grain refractory compositions suitable for making ceramically or chemically bonded refractory articles, and the articles so made, are disclosed. The refractory compositions consist essentially of (a) 40-85 wt. % fused AZS grain, and (b) 15-50 wt. % of at least one constituent selected from

Fused AZS grain refractory compositions suitable for making ceramically or chemically bonded refractory articles, and the articles so made, are disclosed. The refractory compositions consist essentially of (a) 40-85 wt. % fused AZS grain, and (b) 15-50 wt. % of at least one constituent selected from the group consisting of (i) 10-20 wt. % reactive alumina and (ii) 0-45 wt. % chromic oxide.

대표청구항 ▼

Refractory composition for making refractory articles consisting essentially of: (a) 40-85 wt. % fused AZS grain; (b) 10-20 wt. % reactive alumina having an average particle size of about four to one-half micron; (c) 0-45 wt. % chromic oxide; and (d) a binding composition selected from the group con

Refractory composition for making refractory articles consisting essentially of: (a) 40-85 wt. % fused AZS grain; (b) 10-20 wt. % reactive alumina having an average particle size of about four to one-half micron; (c) 0-45 wt. % chromic oxide; and (d) a binding composition selected from the group consisting essentially of alumina phosphate, organic binders and lubricants, the binding composition being combined with one hundred weight percent of components (a), (b) and (c). In a glass melting furnace constructed of shaped, refractory elements, the improvement wherein at least one of the shaped elements is formed from a refractory composition consisting essentially of: (a) 40-85 wt. % fused AZS grain; (b) 10-20 wt. % reactive alumina having an average particle size of about four to one-half micron; (c) 0-45 wt. % chromic oxide; and (d) a binding composition selected from the group consisting essentially of aluminum phosphate, organic binders and lubricants, the binding composition being combined with one hundred weight percent of components (a), (b) and (c).