Nonfibrous castable refractory concrete having high deflection temperature and high compressive strength and process
US4174972A · kind A · utility
Inventors
Key dates
| Filing date | Apr 20, 1978 |
| Grant date | Nov 20, 1979 |
| Priority date | — |
| Expiry date | Apr 20, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C3/085
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A nonfibrous castable refractory concrete, having a deflection temperature under load above 1000.degree. C. and a compressive strength higher than 1450 Newton/cm.sup.2, comprising grains bound by a hydraulic binder and having a content by weight of aluminum expressed as Al.sub.2 O.sub.3 of from 40 to 60%, a content by weight of calcium expressed as CaO of from 4 to 14%, a content by weight of silicon expressed as SiO.sub.2 of from 20 to 60% and a content by weight of fluorine of from 0.1 to 10%, a part of said fluorine being present as alkali or alkaline earth metal fluoride. The invention also provides a process for making said concrete.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.