Process for recovering perrous values from municipal solid waste

Details Process for recovering perrous values from municipal solid waste Process for recovering perrous values from municipal solid waste

1997-09-12

1999-04-06

Rosenbaum, Mark

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

241 2414, B02C 1912

Patent

active

058906630

ABSTRACT:
Dry municipal solid waste material is subjected to a two-step magnetic separation process to recover ferrous values therefrom. The process includes passing the raw solid waste material through a shredder to reduce the waste to particles at a size of 3 inches or less, passing the particles through a series of two magnetic fields, recovering ferrous-containing fractions from each passage, combining the two ferrous-containing fractions and subjecting them to air classification in a cyclone separator to recover a clean particulate ferrous product, and a waste byproduct and recycling the waste byproduct to pass again through one or both of the two magnetic fields.

REFERENCES:
patent: 3885744 (1975-05-01), Drage
patent: 5174509 (1992-12-01), Starke et al.
patent: 5184780 (1993-02-01), Wiens
patent: 5356082 (1994-10-01), Prinz et al.

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