Method and apparatus of rotatable drum dryer with flights releasably secured in different orientations
US5515620A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 10, 1994 |
| Grant date | May 14, 1996 |
| Priority date | — |
| Expiry date | Nov 10, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C2019/1095
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus and method for operating a rotatable drying drum are disclosed herein. The drying drum has a burner for generating hot gases of combustion for flow through the drum to dry aggregate. The drum includes identical drying flights each having a generally U-shaped body having side walls extending from opposite edges of a base and terminating in first and second edges having different configurations and consequent different veiling effects in the dryer by securing the flights in one of a plurality of orientations within the drum. By reorienting the identical flights within the drying zone of the rotary drum dryer, the veiling patterns of the aggregate across the drum may be altered, hence adjusting the exhaust temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.