Fibrous refractory composite insulation

Details Fibrous refractory composite insulation Fibrous refractory composite insulation

C - Chemistry, Metallurgy

04

B

261/19, 261/38,

C04B 35/10 (2006.01) C04B 30/02 (2006.01)

Patent

CA 1120962

14 Fibrous Refractory Composite Insulation Abstract A refractory composite insulating material prepared from silica fibers and aluminosilicate fibers in a weight ratio ranging from 1:19 to 19:1, and about 0.5 to 30% boron oxide, based on the total fiber weight. The aluminosili- cate fiber and boron oxide requirements may be satisified by using aluminoborosilicate fibers and, in such instances, additional free boron oxide may be incorporated in the mix up to the 30% limit. Small quantities of refractroy opaci- fiers, such as silicon carbide, may be also added. The composites just described are characterized by the absence of a nonfibrous matrix.

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