Method for producing silica brick

Details Method for producing silica brick Method for producing silica brick

1995-02-07

1996-03-05

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

C04B 3514

Patent

active

054967805

ABSTRACT:
A method for producing silica brick comprising firing a siliceous stone material containing silica as a main component is disclosed, in which 0.05 to 0.25% by weight of Na.sub.2 O--CaO--SiO.sub.2 fused and solidified material and 0.1 to 1.0% by weight, in terms of Fe.sub.2 O.sub.3, of iron oxide are added to the siliceous stone material, before firing. Transformation of silica into tridymite is effectively accelerated to provide silica bricks mainly comprising tridymite with reduced contents of residual silica and amorphous glass and exhibiting improved creep resistance.

REFERENCES:
patent: 4183761 (1980-01-01), Hoshino et al.
patent: 4866015 (1989-09-01), Koschlig et al.
patent: 4988649 (1991-01-01), Santowski et al.

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