Carbon bake refractories
US5030595A · kind A · utility
1Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1989 |
| Grant date | Jul 9, 1991 |
| Priority date | — |
| Expiry date | Nov 1, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B33/16
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to an unfired refractory brick for use in reducing conditions at temperatures above 1800.degree. F. The brick comprises a matrix of alumino-silicate clays, alumino-silicate-aggregates and high alumina aggregates. It also has 2 to 20% by weight of finally ground silicon carbide and 2 to 20% by weight of fine carbon particles distributed throughout the matrix. The matrix also includes a water soluble ammonium lignin sulphonate as a chemical binding agent. The brick of the present invention finds particular use in a furnace for kiln baking anodes used in the electrolytic production of aluminum metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.