Process and an installation for the heat-treatment of fine-grained material
US4402667A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 5, 1980 |
| Grant date | Sep 6, 1983 |
| Priority date | — |
| Expiry date | Dec 5, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B7/434
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a process and an installation for the heat-treatment of fine-grained material. Before the material is introduced into a precalcination zone, waste air from a cooling zone is divided into two component streams into which partial quantities of material coming from the two preheating zones are introduced. Separately measurable quantities of fuel are added to these two component streams before they are combined with one another. In this way, the material is maximally deacidified in the precalcination zone before it is introduced into the calcining zone without any danger of deposits being formed in the precalcination zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.