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US 7,354,879 B2Granted
Thermally stable ceramic media for use in high temperature environments
AssigneeSaint-Gobain Ceramics & Plastics, Inc.
InventorJohn Stewart Reid
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Abstract
A chemical processing apparatus that utilizes a ceramic media sintered at a lower temperature than the apparatus' maximum exposure temperature is described. The media's physical and chemical properties may contribute to its thermal stability when exposed to temperatures that exceed the media's sintering temperature by at least 50° C.
Claims10
Ceramic media, comprising:
- (a) MgO, wherein said MgO is between 48 and 78 percent by weight of said media;
- (b) SiO2, wherein said SiO2 is between 5 and 30 percent by weight of said media;
- (c) Al2O3, wherein said Al2O3 is between 5 and 30 percent by weight of said media;
- and
- (d) wherein said media is between 24 percent and 38 percent porous based on the apparent volume of the media and said media's major phase, as determined by x-ray diffraction analysis, is MgO.
2 more elements
Dependencies are inferred from the claim text.