Refractory shapes of ceramic fiber-containing material

Details Refractory shapes of ceramic fiber-containing material Refractory shapes of ceramic fiber-containing material

1985-11-26

1988-04-12

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By mechanically introducing gas into material

264 86, 264 87, C04B 3332

Patent

active

047373261

ABSTRACT:
Process for the production of refractory shapes of ceramic fiber-containing mateial, wherein a slurry of refractory fibers and particulate refractory materials is produced in water, the particulate refractory materials are flocculated on the fibers by use of a flocculant, and the desired shape is produced by dewatering the slurry in a suitable mold that enables the water to be removed, and the shape is dried. At least 90% of the fibers have a maximum length of not more than 500 .mu.m; flocculant is added as an aqueous solution to the dispersion of the fibers and particulate refractory material; and pressure is applied to the shape being formed during the dewatering of the slurry to form the desired shape in order to compress the shape.

REFERENCES:
patent: 3976728 (1976-08-01), Hawthorne
patent: 4401613 (1983-08-01), Abell et al.
patent: 4421599 (1983-12-01), Kuzuoka
patent: 4569920 (1986-02-01), Smith-Johannsen

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