Method of preparing cement clinker from carboniferous shale
US4256502A · kind A · utility
6Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1979 |
| Grant date | Mar 17, 1981 |
| Priority date | — |
| Expiry date | Jun 12, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention is related to a method and an installation for preparing cement clinker from carboniferous shale or from any other mineral substance capable of releasing a certain amount of calorific power. According to this novel method, raw material constituted in part by previously calcined carboniferous shale and in part by additive substances which may contain limestone and clay, is submitted to clinkerization. The additive substances are at least partially decarbonated prior to their admixture with the shale.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.