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US 8,618,006 B2Granted
Cement-free refractory
AssigneeVesuvius Crucible Company
InventorsRobert A. Pattillo, Samuel B. Bonsall
Life of this patent
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Abstract
A cement free refractory mixture contains aluminum oxide, silicon carbide, fumed silica, aluminum metal, an anti-oxidant, reactive alumina, and a carbon-bearing material. The mixture can be formed by conventional techniques to create refractory articles to contain or direct the flow of liquid metals. Refractory articles formed by the mixture do not require firing to achieve an initial cure.
Claims19
A refractory mixture for the production of a refractory article, comprising
- a) a substance selected from brown fused alumina, bauxite, andalusite, tabular alumina, mullite and combinations of these materials;
- b) silicon carbide;
- c) fumed silica;
- d) aluminum metal;
- e) an anti-oxidant selected from boron carbide, silicon and combinations of these materials;
- f) reactive alumina;
- and
- g) a carbon-bearing material selected from carbon black, pitch, petroleum pitch/clay co-grind, graphite, and combinations of these materials.
5 more elements
Dependencies are inferred from the claim text.