Modified cement kiln for burning combustible solid waste as supplemental fuel
US5724899A · kind A · utility
10Cited by
28References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 9, 1994 |
| Grant date | Mar 10, 1998 |
| Priority date | — |
| Expiry date | Aug 9, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/125
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method and apparatus are described for environmentally sound usage of combustible solid waste in operating rotary cement kilns. A cement kiln is modified to contain a port in the rotary cylinder for delivery of combustible solid waste into the kiln for burning in contact with calcining mineral material. The port is provided with a closure and means for moving the closure between a port-opened and port-closed position at predetermined times during rotation of the kiln cylinder. The invention allows efficient use of solid waste as supplemental fuel in the cement manufacturing process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.