초록

A means for producing nitride bonded refractory shapes, in situ, by mixing an aluminum metal powder, relatively pure silica, crude clay and a refractory aggregate. The mixes are pressed into shapes and burned at elevated temperatures in a nitriding atmosphere to form the bond.

대표청구항 ▼

A method for producing nitride bonded refratory shapes, in situ, comprising mixing, a composition consisting essentially of, by weight, from about 1 to 25% aluminum, about 1 to 15% substantially pure silica, about 1 to 5% crude clay and the balance a refractory brickmaking size graded refractory agg

A method for producing nitride bonded refratory shapes, in situ, comprising mixing, a composition consisting essentially of, by weight, from about 1 to 25% aluminum, about 1 to 15% substantially pure silica, about 1 to 5% crude clay and the balance a refractory brickmaking size graded refractory aggregate selected from the group consisting of calcined fireclay, fused mullite, synthetic alumina and magnesium aluminate spinel, pressing said mixes into refractory shapes, and burning the shapes at an elevated temperature in a nitriding atmosphere for a time sufficient to form the nitride bond.