Asphalt material recycling system and method with ball screener and impact and cutting choppers
US8672248B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2012 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | Jun 13, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2395/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An asphalt roofing material recycling system and method is used to recycle new and used asphalt materials. The asphalt material is broken up and separated. Dry ice may be added to the recycler and/or a jacket coolant used to cool the recycling vessel. The recycle vessel includes a number of high speed choppers having a blunt end as well as a horizontal mixer element with paddles. The recycled asphalt material is provided to a screener that may feature a plurality of sloping levels, each level including a tray below a screen and balls located within the tray that bounce due to vibration to prevent clogging of the screener. A second processing trip involving gravity feeding the material to be further recycled into a cutter with knife edges to further break down the size of the asphalt material is used for large particles that do not pass through the screener.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.