Method of separating fusible plastics from solid waste

Details Method of separating fusible plastics from solid waste Method of separating fusible plastics from solid waste

1977-08-25

1980-05-27

Gantz, Delbert E.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

162 4, 162 7, 201 25, 201 43, 241 19, 44 1D, 423DIG18, 209 11, D21C 502, B03B 100, C10B 5704

Patent

active

042049067

ABSTRACT:
Equipment and method for treating solid waste in which a substantially nonoxidizing atmosphere is provided through which the shredded solid waste falls under gravity, unsupported and non-contacted, to prevent fusion of the plastics with each other, with other materials in the solid waste, or with the walls or components in the treating equipment. The unique atmosphere also allows a high treatment temperature to accelerate the debonding of fibrous combustible matter and fusion of the plastics into dense particles for substantially complete separation and recovery of plastics from the lighter fibrous but non-fusible combustible matter through gas classification during the fall. This same atmosphere also produces a clean, substantially, homogeneous, storageable and highly combustible fuel derived from the fibrous combustible matter.

REFERENCES:
patent: 1359085 (1920-11-01), Maclachlan
patent: 2822321 (1958-02-01), Pickard
patent: 3315806 (1967-04-01), Sigwart et al.
patent: 3436314 (1969-04-01), Leonor
patent: 3716339 (1973-02-01), Skigaki et al.
patent: 3814240 (1974-06-01), Laundrie
patent: 3856217 (1974-12-01), Brewer
patent: 3904515 (1975-09-01), Mackenzie et al.
patent: 4008053 (1977-02-01), Brenneman
patent: 4034862 (1977-07-01), Bahri et al.
Laundrie et al., Dry Methods of Separating Plastic Films from Waste Paper, Paper Trade Journal, Feb. 5, 1973, pp. 34-36.

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