Method and apparatus for separating non-ferrous metal from waste material
US3970546A · kind A · utility
28Cited by
10References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1974 |
| Grant date | Jul 20, 1976 |
| Priority date | — |
| Expiry date | Jun 4, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S241/38
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Apparatus for separating non-ferrous metal from waste material comprising a grounded rotary conductive drum, means for feeding waste material to the drum, a D.C. corona electrode, an A.C. corona electrode, a D.C. static electrode and a splitter. The method of separation comprises magnetic separation of ferrous metals, sizing of the waste material, preliminary classification to remove dust and low density particles, drying to reduce the moisture content, feeding the waste material to the rotating grounded roll and subjecting the material successively to D.C. corona discharge, A.C. corona discharge and a D.C. electrostatic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.