Separation of heavy from light auto shredder residue
US11679394B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2022 |
| Grant date | Jun 20, 2023 |
| Priority date | — |
| Expiry date | Feb 17, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03B2011/008
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Systems and methods for separating heavier from lighter materials in mixed auto shredder residue (ASR) from end-of-life vehicles. Vehicles are shredded and the resulting mixed ASR is fed into a system that efficiently segregates heavier (typically metal) from lighter (typically plastic) pieces. The system has an inlet feed chute angled downward to a lower end over a separator tank filled with water. One or more nozzles configured to introduce water at a velocity into the separator tank create a flow of water across the tank to push smaller and lighter particles over an exit weir. Heavier particles sink toward a heavy matter removal conveyor having a lower end positioned within the separator tank so that the heavier particles are transported upward out of the separator tank. The heavy matter removal conveyor may be one or more Archimedes screws, a flat, ribbed or cleated conveyor, or a drag chain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.