Refractory fiber composition and intermediate temperature range fibrous insulation composed thereof
US4055434A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1976 |
| Grant date | Oct 25, 1977 |
| Priority date | — |
| Expiry date | Apr 23, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C13/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Refractory fiber compositions are disclosed comprising 84% to 97% by weight total silica and alumina, with the silica-to-alumina weight ratio being in the range of 3:2 to 1:1, preferably approximatey 5:4, and 3% to 16% by weight of a dolomitic component comprising calcium oxide and magnesium oxide. The dolomitic component may be composed of burnt dolomite or lime and magnesia. The fibers made of these compositions are suitable for thermal insulation use at temperatures in the range of from 1400.degree. F to 2000.degree. F (760.degree. C to 1100.degree. C) and find particular use as insulating mats and blankets for furnaces, kilns and automobile catalytic mufflers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.