Classifying – separating – and assorting solids – Magnetic
Patent
1976-02-03
1978-01-24
Halper, Robert
Classifying, separating, and assorting solids
Magnetic
209223R, B03C 114
Patent
active
040702782
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, it is subjected to a "time-of-flight" type of segregation where a magnetic field is used to influence the downward free-fall of the remaining mixed solids materials. In combining a magnetic field with gravity fall, there is a retarding force on each conductive piece of material which is related to its conductivity and volume. As a result, different types of material fragments of about the same size will have different descent times in the drop zone which will depend primarily upon density and electrical conductivity and a rotatable diverter means, which is properly timed and synchronized in its movement with respect to the releases of unsegregated material, can provide for the deflection of the different types of materials into appropriate collecting zones.
REFERENCES:
patent: 695080 (1902-03-01), Ramspeck
patent: 731040 (1903-06-01), Gates
patent: 731044 (1903-06-01), Gates
patent: 1657405 (1928-01-01), Machaven
patent: 2235305 (1941-03-01), Wiegand
patent: 3824516 (1974-07-01), Benowitz
Halper Robert
Hoatson Jr. James R.
Liggett Philip T.
Page II William H.
UOP Inc.
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