Solid material comminution or disintegration – Processes – With classifying or separating of material
Patent
1998-09-02
1999-11-02
Rosenbaum, Mark
Solid material comminution or disintegration
Processes
With classifying or separating of material
209 3, 209362, 209479, 241 2418, 241 73, 241 29, 241 791, 241160, B02C 1912
Patent
active
059754427
ABSTRACT:
A granulator for separating the constituent parts of electrical cable containing relatively light-weight plastic covering relatively heavy electrically-conductive material. The granulator includes a first cutter for cutting the cable into short pieces and a second cutter for cutting the short pieces of cable into a still shorter length sufficient to detach the plastic from the electrically-conductive material to form a mixture of small pieces of plastic and electrically-conductive material. A vibratory sorter separates the mixture of plastic and electrically-conductive material, and includes an elongate, circular and spirally-extending track having a material inlet adjacent a bottom end thereof for receiving the mixture of plastic and electrically-conductive material for separation and a electrically-conductive material discharge slot adjacent a top end thereof for discharging electrically-conductive material. A vibrator impart vibratory motion to the mixture of plastic and electrically-conductive material sufficient to cause the mixture to move upwardly along the track and to vertically separate into a relatively heavy bottom layer of electrically conductive material and a top layer of relatively light-weight plastic pieces riding on top of the layer of electrically-conductive material. A plurality of vertically spaced-apart air jets apply respective radially-extending air blasts to the top layer of plastic pieces as the plastic pieces vibrate progressively up the track on top of the electrically-conductive material. The air blasts have sufficient energy to blow the plastic pieces off of the track but insufficient energy to blow the electrically-conductive material off of the track.
REFERENCES:
patent: 2464216 (1949-03-01), Devol
patent: 4839031 (1989-06-01), Ackermann et al.
patent: 4857177 (1989-08-01), Lupton
patent: 4894148 (1990-01-01), Frei
patent: 4964577 (1990-10-01), Kopp
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