Magnetic refuse separator
US3935947A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 20, 1974 |
| Grant date | Feb 3, 1976 |
| Priority date | — |
| Expiry date | Feb 20, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S209/931
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A magnetic separator includes a continuous belt revolving in a closed path in association with a supply conveyor carrying magnetic and non-magnetic refuse. A magnetic assembly at the belt includes, in the direction of belt travel, a pick-up magnet, a transfer magnet, and a discharge magnet. A curve is provided in the path of belt travel, other than at its head or end pulley, and the magnetic field is generated upstream and downstream of the belt curve and at the curve. The field from the pick-up magnet extends along the belt to the belt curve, the field from the transfer magnet is at the curve, and the discharge magnet is on the opposite side of the curve spaced from the transfer magnet to provide a gap in the magnetic field between the transfer and discharge magnet. Magnetic material from the burden on the supply conveyor is attracted to the belt and non-magnetic material falls away. The magnetic material so attracted travels with the belt into the gap in the magnetic field at which point it is released and falls away from the belt. The released magnetic material follows a trajectory which carries it into the field of the discharge magnet where it is again attracted to the belt. T…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.