US3790091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid waste separating method and classification of material
Assignee: National Recycling Inc
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Filing: 1971-06-07
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Granted: 1974-02-05
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Expires: 1991-06-07
Abstract
Abstract A method for separating solid waste material into identifiable classifications by recycling the solid waste material obtained from industrial or domestic source through a number of devices which reduces the solid waste material to a uniform workable particle size; separating the presized particles by weight, size and magnetic properties; transferring the classified material to a number of disposal areas wherein the materials such as heavy paper material may be baled, the light paper and plastic may be pelletized for use as fuel, the metal and glass shipped to reprocessing plants, and the remainder of the solid waste material may be disposed of by land fill or incineration. The invention further relates to an anti-pollution method for solid waste material which conserves the virgin natural resources by reclaiming useful material and minimizing areas needed for land filling, and reduces the solid waste management problem.
Inventors
- 👤 E Law
- 👤 J Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:35
CPC Classifications
B; B03; B03B; B03B9/00; B03B9/06; B07; B07B; B07B9/00; B07B9/02; C; C10; C10L; C10L5/00; C10L5/40; C10L5/46; Y; Y02; Y02E; Y02E50/00; Y02E50/10; Y02E50/30
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
133 words
The method of separating solid waste material into identifiable classifications which comprises: a. passing the solid waste material including paper and plastic through a presizer for reducing the solid waste material to a substantial uniform workable particle size; b. conveying the uniform workable particle size waste material under an aspirator to separate by weight the light solids from the heavy solids; c. conveyIng the heavy solids to a screener for separating the heavy solids by particle size and removal of dust carried by the heavy solids; d. transferring the light solids to a plastic and paper separator to separate by weight the plastic material and light paper from the heavy paper material; e. and passing the light paper and plastic material through a pelletizer to compact the paper and increase the density thereof.
Claim 2
Dependent Claim
43 words
The method of separating solid waste material as set forth in claim 2 wherein the presizer reduces the paper by shredding so that the frayed edges of the torn paper can be used for visual classification of the grade of paper being processed.
Claim 3
Dependent Claim
39 words
The method of separating solid waste material as set forth in claim 3 wherein the paper is shredded in a maximum uniform size of approximately 5 inches by 4 inches for separating the paper from the other solid material.
Claim 4
Dependent Claim
41 words
The method of separating solid waste material as set forth in claim 2 wherein the reduced waste material falls from the presizer onto a vibrating conveyor for distributing the reduced waste material in a uniform manner onto an endless belt conveyor.
Claim 5
Dependent Claim
63 words
The method of separating solid waste material as set forth in claim 2 including the step of passing the reduced solid waste material under an electromagnetic conveyor for removing the ferrous material therefrom and releasing the ferrous material from the electromagnetic conveyor at a predetermined point so that the ferrous material will be dropped onto a conveyor for transfer to a salvage area.
Claim 6
Dependent Claim
41 words
The method of separating solid waste material as set forth in claim 2 including the step of passing the reduced solid waste material through a vibrating screener to remove glass, sand, stones and food particles from the reduced solid waste material.
Claim 7
Independent Claim
261 words
The method of separating solid waste material into identifiable classifications which comprises: a. passing the solid waste material through a presizer for shredding the solid waste material to a small substantially workable particle size, b. conveying the shredded material through a first aspirator to separate by weight the light solids from the heavy solids, c. transferring the light solids through a duct by air to a first cyclone wherein the air is released to the atmosphere, d. conveying the heavy solids to a vibrating screener for further separation of the solid material by particle size, e. transferring the light solids separated in the vibrating screener by air through a second aspirator and duct to a second cyclone wherein the air is released to atmosphere, f. conveying the heavy solids passing from the vibrating screener to a disposal area, g. transferring the solid waste material from the second cyclone to a rotary screener for separating the heavy solids by particle size wherein the lighter solids are transferred to a plastic and paper separator and the heavier solids are transferred to a disposal area, h. transferring the light solids separated by the plastic and paper separator by air to the first cyclone and transferring the heavier solids by air to a third cyclone wherein the air is released to the atmosphere, i. passing the light solids from the first cyclone through a pelletizer to compact the light solids and increase the density thereof, and j. passing the heavy solids from the third cyclone to a baler to compact the heavy solids into bales.
Claim 8
Dependent Claim
27 words
The method of separating solid waste material as set forth in claim 8 including the step of blending fine coal with the pelletized solids for fuel consumption.
Claim 9
Dependent Claim
33 words
The method of separating solid waste material as set forth in claim 8 including the step of conveying the bales from the baler to a disposal area for shipment to a paper mill.
Claim 10
Dependent Claim
68 words
The method of separating solid waste material as set forth in claim 8 including the step of passing the solid waste material coming from the presizer under an electromagnetic conveyor for removing the ferrous material theRefrom and conveying the ferrous material through a third aspirator for removing light non-ferrous material which may be carried over by the ferrous material, and transferring the non-ferrous material to the vibrating screener.
Claim 11
Dependent Claim
35 words
The method of separating the solid waste material as set forth in claim 8 including the step of controlling the air to each cyclone by valve means disposed in the duct leading to each cyclone.
Claim 12
Dependent Claim
38 words
The method of separating solid waste material as set forth in claim 8 including th step of transferring the large solid material and smaller solid material to separate locations on a conveyor for transfer to a disposal area.
Claim 13
Dependent Claim
30 words
The method of separating solid waste material as set forth in claim 8 including the step of transferring the larger solid material which is primarily glass to a disposal area.
Claim 14
Dependent Claim
33 words
The method of separating solid waste material as set forth in claim 8 wherein the heavier solids separated by the rotary screener are removed by a rotating screw conveyor to a disposal area.
Claim 15
Dependent Claim
48 words
The method of separating solid waste material as set forth in claim 8 including the steps of blending fine coal with the light solids prior to being pelletized and adding a fine coating of water proofing to the pellets to permit storage of the pellets out of doors.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |