Process for recovery of values from solid waste materials
US5609256A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 4, 1995 |
| Grant date | Mar 11, 1997 |
| Priority date | — |
| Expiry date | Jan 4, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S241/38
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Process for separating valuable solid materials from a mixture of waste scrap materials by adding water and sand to a volume of scrap, such as chopped insulated wire, to obtain a feed of about 70-80% solids by weight; subjecting the feed mixture to vigorous agitation; screening out large foreign materials; subjecting the screened mixture to a dense medium separation with the introduction of water to produce a fluidized bed in the separation zone; removing light stream from the separation zone and screening to recover insulation material particles; and removing a heavy stream from the separation zone and screening to recover metallic particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.