Method of producing mullite ceramic fiber products

Details Method of producing mullite ceramic fiber products Method of producing mullite ceramic fiber products

1981-11-13

1983-05-17

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Refractory

423327, 501128, 501 5, C01B 3336, C04B 3518, C04B 3564, C04B 3580

Patent

active

043840469

ABSTRACT:
Mullite ceramic fiber produced by mixing an aluminosilicate fiber having less than 72 weight percent of Al.sub.2 O.sub.3 with high-alumina substances, such as polycrystalline high-alumina fibers having more than 72 weight percent of Al.sub.2 O.sub.3, and heating of the mixture to about 1,300.degree. to 1,450.degree. C., results in a refractory material characterized by lower bulk density, a low degree of contraction, substantial maintenance of original fiber shape, and total or nearly total consumption of free silica, with corresponding reduction in silicic acid.

REFERENCES:
patent: 3458329 (1969-07-01), Owens et al.
patent: 3503765 (1970-03-01), Blaze
patent: 3996145 (1976-12-01), Hepburn
patent: 4101615 (1978-07-01), Horikiri et al.
patent: 4144195 (1979-03-01), Siebels
patent: 4240833 (1980-12-01), Myles
patent: 4272500 (1981-06-01), Eggerding et al.

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