US3875319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for recovering feed products from animal manure
Assignee: Ceres Ecology Corp
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Filing: 1973-08-16
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Granted: 1975-04-01
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Expires: 1993-08-16
Abstract
Abstract A process and apparatus for recovering valuable feed products from animal manure by adding water to the manure to form a slurry from which mineral matter, grain and fiber particles, proteineous material and water are recovered by successive slurry-forming and liquid/solid separation stages. The recovered water is reused in the forming of the initial manure slurry and in subsequent steps of the process. The recovered grain and fiber particles and proteineous material are useful as feed products which can be refed to the animals from which the manure is collected or, of course, other animals.
Inventors
- 👤 David W Seckler
- 👤 Judson M Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:33
CPC Classifications
B; B01; B01D; B01D37/00; A; A23; A23J; A23J1/00; A23J1/001; A23J1/003; A23K; A23K10/00; A23K10/20; A23K10/26; B01D29/00; B01D29/11; B01D29/117; B01D29/118; B01D29/62; B01D29/64; B01D29/6469; B01D29/6476; B01D29/76; B01D29/78; B01D29/88; B01D29/90; B01D29/908; B01D29/94; B01D35/00; B01D35/12; Y; Y10; Y10S; Y10S426/00; Y10S426/807
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
82 words
A PROCESS FOR RECOVERING FEED PRODUCTS FROM MANURE, COMPRISIN FORMING A FIRST WATER-MANURE SLURRY, SEPARATING SAID FIRST SLURRY INTO LIQUID AND SOLIDS FRACTURES, FORMING AT LEAST ONE ADDITIONAL WATER-MANURE SLURRY BY MIXING THE SOLID FRACTION FROM THE FIRST SLURRY WITH WATER, SEPARATING LIQUID AND SOLID FRACTIONS OF SAID ADDITIONAL SLURRY, ADDING AT LEAST PART OF THE SEPARATED LIQUID FRACTION OF THE ADDITIONAL SLURRY TO THE FIRST SLURRY, AND EVAPORATING WATER IN THE LIQUID FRACTION OF THE FIRST SLURRY TO SEPARATE NUTRIENTS THEREFROM.
Claim 2
Dependent Claim
82 words
A PROCESS FOR RECOVERING FEED PRODUCTS FROM MANURE, COMPRISIN FORMING A FIRST WATER-MANURE SLURRY, SEPARATING SAID FIRST SLURRY INTO LIQUID AND SOLIDS FRACTURES, FORMING AT LEAST ONE ADDITIONAL WATER-MANURE SLURRY BY MIXING THE SOLID FRACTION FROM THE FIRST SLURRY WITH WATER, SEPARATING LIQUID AND SOLID FRACTIONS OF SAID ADDITIONAL SLURRY, ADDING AT LEAST PART OF THE SEPARATED LIQUID FRACTION OF THE ADDITIONAL SLURRY TO THE FIRST SLURRY, AND EVAPORATING WATER IN THE LIQUID FRACTION OF THE FIRST SLURRY TO SEPARATE NUTRIENTS THEREFROM.
Claim 3
Dependent Claim
47 words
A process according to claim 1, wherein a plurality of additional successive water-manure slurries are formed and separated into liquid and solid fractions, with at least part of each liquid fraction being added to a solid fraction from a preceding separating step to form said successive slurries.
Claim 4
Dependent Claim
27 words
A process according to claim 2, wherein fresh water is added during the last separating step to wash the solid fraction produced by said last separating step.
Claim 5
Dependent Claim
31 words
A process according to claim 2, wherein the solid fraction from the last separating step is washed and pressed, and the liquid pressed therefrom is added to the last water-manure slurry.
Claim 6
Dependent Claim
16 words
A process according to cLaim 1, wherein the first slurry is heated to reduce its viscosity.
Claim 7
Dependent Claim
116 words
A process for deriving a high-protein feed supplement and a grain and fiber feed product from animal manure, comprising forming a first water-manure slurry, separating said first slurry into liquid and solid fractions, forming at least one additional water-manure slurry by mixing the solid fraction from the first slurry with water, separating liquid and solid fractions of said additional slurry, adding at least part of the separated liquid fraction of the additional slurry to the first slurry, the solid fraction separated from the last separating step comprising said grain and fiber feed product, and separating solid matter from the liquid in the liquid fraction of the first slurry, said solid matter comprising said high-protein feed supplement.
Claim 8
Dependent Claim
116 words
A process for deriving a high-protein feed supplement and a grain and fiber feed product from animal manure, comprising forming a first water-manure slurry, separating said first slurry into liquid and solid fractions, forming at least one additional water-manure slurry by mixing the solid fraction from the first slurry with water, separating liquid and solid fractions of said additional slurry, adding at least part of the separated liquid fraction of the additional slurry to the first slurry, the solid fraction separated from the last separating step comprising said grain and fiber feed product, and separating solid matter from the liquid in the liquid fraction of the first slurry, said solid matter comprising said high-protein feed supplement.
Claim 9
Dependent Claim
28 words
A process according to claim 1, wherein a floccing agent is added to said liquid fraction of said first slurry prior to separation of said solid material therefrom.
Claim 10
Dependent Claim
17 words
A process according to claim 1, wherein the solid fraction from the last separating step is pressed.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |