Cement plant dust recovery system
US4584022A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 1984 |
| Grant date | Apr 22, 1986 |
| Priority date | — |
| Expiry date | Aug 27, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process of treating the dust catch from a cement manufacturing operation to produce either cement clinker or an intermediate product suitable for feed to a conventional cement clinker production facility. A biproduct of enriched alkali and sulfur compounds is also produced. The process includes a feed preparation stage where dust catch, coal or coke and a binder such as cement are combined. Additives to correct the material chemistry may also be added. This mixture is formed into nodules which are dried and then sized to form a feed material. The feed material is processed at or near cement clinkering temperatures in a fluidized bed reactor to volatilize alkali and sulfur compounds and products the intermediate product or cement clinker. Suitable heat recovery devices are utilized in the product cooling phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.