Magnetic segregation of mixed non-ferrous solid materials in ref

Details Magnetic segregation of mixed non-ferrous solid materials in ref Magnetic segregation of mixed non-ferrous solid materials in ref

1976-02-03

1978-04-11

Halper, Robert

Classifying, separating, and assorting solids

Magnetic

209223R, B03C 122

Patent

active

040837742

ABSTRACT:
After an initial separation of paper, plastics and the light fibrous types of materials, as well as magnetically removable ferrous metals, from refuse material, the remaining mixed solid materials are projected outwardly in a generally horizontal path and subjected to a "flight-path" type of segregation where a magnetic field is used to influence and lessen the length of the trajectory of the conductive metals in the mixture of materials. The magnetic field induces a retarding force related to the size, conductivity and to some extent to the shape of the fragments which, in combination with the force of gravity, modifies the trajectory of different materials. As a result, fragments of different types of materials will tend to "drop out" at different distances along the general flight path according to their individual electrical conductivity properties. Segregation of the initially mixed materials will be accomplished by having successively positioned collection zones under and along the flight path where the low density-high conductivity materials fall into the closer zones and the high density-low conductivity materials will carry to the further zones.

REFERENCES:
patent: 3448857 (1969-06-01), Benson
patent: 3824516 (1974-07-01), Benowitz
patent: 3950661 (1976-04-01), Langmuir

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