Method of treating refuse to separate valuable constituents
US4251353A · kind A · utility
10Cited by
11References
36Claims
0Family size
Inventor
Key dates
| Filing date | Nov 13, 1978 |
| Grant date | Feb 17, 1981 |
| Priority date | — |
| Expiry date | Nov 13, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/60
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of treating a refuse fraction to separate a desired valuable constituent, such as a glass concentrate, is disclosed in which a particulate refuse fraction comprising glass, stones, metal and the like is fed to the top of a rotating support comprising a grounded conductive underlayer and a nonconductive overlayer and the particles are pinned to the rotating support by ion bombardment. The stone and metal particles tend to separate first from the roll while the glass particles have a greater tendency to remain pinned to the roll and can be collected as a separate fraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.