Method and system for thermal treatment of fine-grained material, particularly for the manufacture of cement clinker
US5098285A · kind A · utility
19Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1991 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | Jan 29, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/125
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method and apparatus for calcining fine grained material in the manufacture of cement clinker wherein material is preheated and partially calcined in a cyclone preheater, further partially calcined by a waste zone wherein waste material such as used tires are burned in an excess of oxygen, completely calcined in a kiln, the exhaust gases from the waste zone and kiln fed to a separate auxiliary burning zone which is supplied only with fuel and utilizes the excess oxygen from the waste zone reducing the presence of CO and the CO surges, and the heat from the burning zone is fed to the preheaters to further precalcine the material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.