Method and apparatus for treating asphaltic concrete paving materials
US4856202A · kind A · utility
5Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 20, 1987 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Mar 20, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B21/004
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of heating reclaimed asphalt paving is shown and described. An air sorter removes fine materials from the reclaimed asphalt paving, and an air circulating dryer which utilizes high velocity air impingement, removes the moisture from the material. A combustion heated recirculating air dryer or dryers is used to raise the temperature of the material to a first desired temperature and a microwave heating tunnel is used to raise the temperature to a final desired temperature. A recirculating air dryer which has sufficient velocity to form clear spots between wind rows on a conveyor belt is also shown and described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.