Mold for firing bodies of silica- or alumina-containing granules

Details Mold for firing bodies of silica- or alumina-containing granules Mold for firing bodies of silica- or alumina-containing granules

1978-02-07

1979-11-13

McQuade, John

Static molds

Including means within surface to confine heat exchange medium

Mold part of particular material

249111, 249112, 249115, 249134, 425 4R, B28B 734, B28B 736

Patent

active

041740890

ABSTRACT:
Silica- or alumina-containing granules are loaded into a mold of which the inner walls at least are formed of a nonbonding material constituted of ferrochromite, magnesiochromite, calciochromite, or trivalent-chromium oxide. The mass is then heated to a temperature above the softening point of the granules so as to fuse them together and thereafter the heated mass is hardened. As the mass can inherently not bond to the lining of the mold subsequent separation is relatively easy.

REFERENCES:
patent: 600565 (1898-03-01), Wallace
patent: 1634999 (1927-07-01), Krause
patent: 3666531 (1972-05-01), Cocks
patent: 3811815 (1974-05-01), Sundermann et al.
patent: 4050865 (1977-09-01), Drostholm et al.

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