Compositions for plugs of refractory material
US4008194A · kind A · utility
6Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 18, 1975 |
| Grant date | Feb 15, 1977 |
| Priority date | — |
| Expiry date | Nov 18, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/9676
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
New compositions for refractory plugs to plug the tapholes of blast furnaces which exhibit less tendency to stiffen and to burn with the emission of heavy black smoke in use are prepared by adding 5-30 parts by weight of a petroleum pitch which has a high softening point and 10-30 parts by weight of dihydric alcohol or its polymer to 100 parts by weight of a conventional refractory aggregate composition and mixing the thus combined constituents to form a mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.