Solid material comminution or disintegration – Processes – Selective or differential comminution of mixed or bonded solids
Patent
1989-03-06
1991-01-29
Eley, Timothy V.
Solid material comminution or disintegration
Processes
Selective or differential comminution of mixed or bonded solids
241 19, 241 24, 241 61, 241 77, 241 791, 241 81, 241DIG38, B02C 2100, B02C 2322
Patent
active
049880446
ABSTRACT:
A steel can shredding/delabeling system processes post-consumer steel cans, taken from a solid weight stream, into a densified product suitable for detinning. The steel cans are transported and fed into a surge hopper that feeds cans into a shredder. The surge hopper is designed to maintain a continuous feed to the shredder to optimize shredding efficiency. As the steel cans pass through the shredder, they are transformed into shredded, densified steel particles with the paper labels removed and reduced to paper fines. This mixture of shredded cans and paper fines is transferred by conveyor to the top of a multi-pass aspirator. The aspirator utilizes an upward air flow within a column of the aspirator to separate the materials on the basis of their terminal velocities in air. The mixture free falls down a series of cascades, while being subjected to the upward flow of air. The heavier, delabeled can shreds exit at the bottom into a transfer conveyor where the processed material is transported for storage or further processing. The exhaust air from the aspirator, together with the entrained paper fines, continues to a cyclone chamber where the paper fines drop out into a trash receptacle.
REFERENCES:
patent: 3925198 (1975-12-01), Eckhoff et al.
patent: 3963181 (1976-06-01), Deloy et al.
patent: 3981454 (1976-09-01), Williams
patent: 4139454 (1979-02-01), Larson
Weitzman David H.
Young Jeffrey M.
Eley Timothy V.
Resource Recycling Technologies, Inc.
LandOfFree
Steel can shredding/delabeling system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Steel can shredding/delabeling system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Steel can shredding/delabeling system and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-808879