Preparing refractory articles by a freezecast process

Details Preparing refractory articles by a freezecast process Preparing refractory articles by a freezecast process

1991-07-17

1992-06-09

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

With step of cooling to a temperature of zero degrees c. or...

264 60, 264 62, C04B 4187

Patent

active

051204770

ABSTRACT:
Refractory articles are prepared by a freezecast process where a ceramic fiber mat is saturated with a colloidal silica aqueous suspension, frozen and then heated to produce a preform. The preform is then saturated with a colloidal silica aqueous suspension, frozen, and then heated to produce a refractory article having silica particles substantially uniformly distributed throughout. The density of the refractory article can be increased by compression of the saturated mat prior to freezing.

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patent: 4248752 (1981-02-01), Myles
patent: 4341725 (1982-07-01), Weaver et al.
patent: 5047181 (1991-09-01), Occhionero

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