US3670968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System and process for recovery of cellulosic fibrous material from refuse
Assignee: OI Glass Inc
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Filing: 1970-06-02
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Granted: 1972-06-20
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Expires: 1990-06-02
Abstract
Abstract A system and process for recovering the cellulosic fibrous material contained in refuse, particularly municipal refuse, and converting it into pulp suitable for various paper product manufacturing purposes. The novel system of this invention features unique defiberation apparatus which, in combination with a magnetic separator and a vibrating screen, separates the cellulosic fiber from the remainder of the refuse. This system is well suited to be utilized in conjunction with a composting plant and/or a municipal sewage treatment plant to completely process all municipal refuse and/or sewage sludge while simultaneously removing the reuseable cellulosic fiber therefrom.
Inventors
- 👤 Sergio F Galeano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:01
CPC Classifications
B; B03; B03B; B03B9/00; B03B9/06; B03B9/061; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/52; Y10; Y10S; Y10S241/00; Y10S241/38; Y10S4/00; Y10S4/09
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
33 words
A system as set forth in claim 1 further including a stock chest positioned to receive said cellulosic fiber-containing slurry from said secondary defiberator means for storage for reprocessing into useful paper products.
Claim 2
Dependent Claim
49 words
A system as set forth in claim 2 further including pulp pressing and baling means positioned to receive said cellulosic fiber-containing slurry from said stock chest and adapted to remove the liquid from said slurry and press and bale the resulting cellulosic fibers to a form suitable for handling.
Claim 3
Dependent Claim
41 words
A system as set forth in claim 1 further including a baling means positioned to receive the magnetic material separated by said magnetic material separating means and adapted to compress and bale such magnetic material Into a form suitable for handling.
Claim 4
Independent Claim
121 words
The method of recovering cellulosic fibrous material contained in refuse and converting it into pulp suitable for reprocessing into useful paper products comprising the steps of: grinding the refuse to reduce the size of the material contained therein; magnetically separating the magnetically responsive material from said refuse; passing said refuse over a vibrating screen to remove a large portion of the noncellulosic material contained therein; impinging liquid on said refuse in a large tank to thereby place the cellulosic fibrous material therein in a pulp-like slurry; removing any noncellulosic material which settles to the bottom of said tank or rises to the surface of said tank; and draining said cellulosic fiber-containing slurry from said tank for reprocessing into useful paper products.
Claim 5
Dependent Claim
56 words
The method as set forth in claim 5 further including the steps of conducting said cellulosic fiber-containing slurry drained from said tank to a secondary defibrator means to remove any remaining noncellulosic material and conducting said cellulosic fiber containing slurry from said secondary defibrator means directly to a paperboard mill for reprocessing into useful paper products.
Claim 6
Dependent Claim
39 words
The method as set forth in claim 5 further including the steps of: pressing said cellulosic fiber-containing slurry drained from said tank to remove the liquid therefrom; and baling said pressed cellulosic fibers into a form suitable for handling.
Claim 7
Dependent Claim
27 words
The method as set forth in claim 5 further including the step of baling the magnetic material separated from said refuse into a form suitable for handling.
Claim 8
Dependent Claim
179 words
In combination with a paper mill, a system for recovering the cellulosic fibrous material contained in refuse and converting it into pulp suitable for reprocessing into useful paper products comprising: grinding means positioned to receive said refuse and adapted to reduce the size of the objects in said refuse; magnetic material separating means positioned to receive said refuse from said grinding means and adapted to remove magnetically responsive material from said refuse; vibrating screen means positioned to receive the remainder of the refuse not removed by said magnetic material separating means and adapted to separate and remove from said refuse a large portion of the noncellulosic material contained therein; defiberator means positioned to receive the remainder of said refuse from said vibrating screen means and adapted to impinge liquid on said refuse to thereby place the cellulosic fibrous material contained therein in a pulp-like slurry; and conducting means connecting to said defiberator means and said paper mill and adapted to conduct said cellulosic fiber-containing slurry from said defiberator means to said paper mill for reprocessing into useful paper products.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |