Method of producing low-carbon, white husk ash

Details Method of producing low-carbon, white husk ash Method of producing low-carbon, white husk ash

1976-09-02

1977-09-20

Garvin, Patrick P.

Compositions: coating or plastic

Materials or ingredients

106309, 423335, C04B 3100

Patent

active

040494640

ABSTRACT:
Low carbon, white husk ash suitable for use in manufacturing building materials, more particularly refractory building materials are prepared by first removing volatile constituents by heating the husks, normally rice husks but alternatively, for example, wheat, oats or barley husks, to a first relatively low temperature below the ignition point of the husks. Fixed carbon is then oxidized in the presence of a reagent by heating the husks to a second temperature above the separation temperature but below the crystallization temperature of the SiO.sub.2 in the husks, following by a heat treatment at a third temperature above the crystallization temperature of the SiO.sub.2, to produce a uniform SiO.sub.2 crystal structure.

REFERENCES:
patent: 1528371 (1925-03-01), Gambel
patent: 3125043 (1964-03-01), Gravel

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