Oxide refractory material having fine crystal structure; and pro

Details Oxide refractory material having fine crystal structure; and pro Oxide refractory material having fine crystal structure; and pro

1982-08-02

1984-04-03

Sever, Frank

Chemistry: physical processes

Physical processes

Crystallization

51309, 425 6, B01D 900, C09C 168

Patent

active

044398956

ABSTRACT:
Oxide refractory materials (for example, alumina-zirconia mixtures) can be cast to have an extremely fine crystal structure by casting them onto a non-reactive, non-melting particulate solid cooling media of a material other than that of the oxide refractory material (for example, steel spheres having a size ranging from about 5 to about 60 mm). By using steel spheres as the cooling media, the spheres can be removed from the solidified material with a magnet. The solidified material, when crushed and graded, has exceptional utility as an extremely tough abrasive grain.

REFERENCES:
patent: 2802236 (1957-08-01), Nash
patent: 3781172 (1973-12-01), Pett et al.

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