Process for recovery of values from solid waste materials

Details Process for recovery of values from solid waste materials Process for recovery of values from solid waste materials

1995-01-04

1997-03-11

Terrell, William E.

Classifying, separating, and assorting solids

Precedent preparation of items or materials to facilitate...

Selective differentiation

209 122, 209 17, 2091725, 209930, 241 2416, 241DIG38, B03B 500, B03B 700

Patent

active

056092563

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.

REFERENCES:
patent: 2698087 (1954-12-01), Call et al.
patent: 3622087 (1971-11-01), Oltmann
patent: 3970546 (1976-07-01), Webb et al.
patent: 4249700 (1981-02-01), Parekh et al.
patent: 4830188 (1989-05-01), Hannigan et al.
patent: 4940187 (1990-07-01), Lee

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