Method and an apparatus for sorting solids

Details Method and an apparatus for sorting solids Method and an apparatus for sorting solids

1991-06-10

1993-05-11

Hajec, Donald T.

Classifying, separating, and assorting solids

Precedent preparation of items or materials to facilitate...

Sorting special items or sorting by methods and apparatus...

209 11, 209576, 209930, 219 1055A, 219 1055M, 374 10, 374122, 374167, B07C 534, G01N 306

Patent

active

052093557

ABSTRACT:
A method and an apparatus for sorting particulate solids material. The material is subjected to a microwave field and absorbs energy to an extent depending upon the dielectric properties of the individual particles. The absorbed energy heats the particles, and pyrodetectors detect the heat radiation. Detector output signals control pressurized air jets to remove particles from the waste material which are detected to be colder than the remainder of the bulk.

REFERENCES:
patent: 1901208 (1933-03-01), Vayda
patent: 4123702 (1978-10-01), Kinanen et al.
patent: 4212397 (1980-07-01), Bockelmann
patent: 4433924 (1984-02-01), Quinn, III
patent: 4933075 (1990-06-01), Nordin et al.

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