Halogen-resistant media
US6774075B2 · kind B2 · utility
1Cited by
17References
31Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 13, 2003 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Jun 13, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/195
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Ceramic mass and thermal transfer media suitable for use in thermal regenerative oxidizers made using a mixture of a ball clay, talc and optionally a dolomitic limestone have enhanced resistance to environments containing halogens and hydrogen halides. The media preferably comprises less than 0.25% by weight of alkali metal, expressed as the oxide, and has a cordierite: silica phase ratio of less than 1.2:1, as determined by X-ray diffraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.