Patent ID: 7759268

Claim:
A method of making a zircon composition comprising: contacting at least one zirconia precursor and/or a sol made from the at least one zirconia precursor, at least one silica precursor and/or a sol made from the at least one silica precursor, with a preformed zircon powder, wherein the contacting is in any order, and the median particle size of the preformed zircon powder is from about 3 μm to about 30 μm; and the zirconia precursor and the silica precursor as a zircon precursor comprise from about 5 to about 15 volume% of the mixture of the zircon precursor and the preformed zircon powder; forming a green body from the mixture of the zirconia precursor, the silica precursor and the preformed zircon powder, with a desired shape; and firing the green body to obtain a zircon refractory body.