Patent US3844759A successfully refreshed from Google Patents.
US3844759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agglomeration and extraction of peat moss
Assignee: Université de Sherbrooke
•
Filing: 1973-12-05
•
Granted: 1974-10-29
•
Expires: 1993-12-05
Abstract
Abstract The invention relates to the production of a peat moss product wherein substantial amounts of the naturally occurring hydrophobic bitumens in the peat moss are removed therefrom by solvent extraction with a hydrophobic liquid and the treated peat moss is simultaneously agglomerated into spherical shapes or balls with water. A fertilizer is desirably incorporated in the balls during agglomeration.
Inventors
- 👤 M Ruel
- 👤 A Sirianni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:32
CPC Classifications
C; C05; C05F; C05F11/00; C05F11/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
152 words
A METHOD OF TREATING FINELY DIVIDED PEAT MOSS WHICH COMPRISES PROVIDING A MIXTURE INCLUDING (A) PEAT MOSS PARTICLES COMPRISING A HYDROPHILIC MATRIX AND HYDROPHOBUC CONSTITUENTS DISPERSED THEREIN, (B) A FIRST LIQUID CONSTITUTING A HYDROPHOBIC CONTINUOUS PHASE IN SUFFICIENT AMOUNTS TO FORM A FLUID SLURRY WITH (A), AND (C) A SECOND AQUEOUS LIQUID CONSISTING ESSENTIALLY OF WATER WHICH WETS SAID HYDROPHILIC MATRIX PREFERENTIALLY RELATIVE TO SAID FIRST LIQUID, SAID SECOND LIQUID BEING SUBSTANTIALLY IMMISICIBLE WITH SAID FIRST LIQUID AND PRESENT IN A AMOUNT BETWEEN ABOUT 130-400% BASED ON THE WEIGHT OF DRY SOLIDS, AGITATING SAID MIXTURE WHEREBY SAID FIRST LIQUID LEACHES AT LEAST PART OF SAID HYDROPHOBIC CONSTITUENTS AND SIMULTANEOUSLY SAID SECOND LIQUID WETS SAID HYDROPHILIC MATRIX AND AGGLOMERATES SAID LEACH PARTICLES AND SECOND AQUEOUS LIQUID INTO A MULTIPLICITY OF SUBSTANTIALLY DISCRETE PELLETS AND SEPARAT-E ING SAID FIRST LIQUID CONTAINING SAID HYDROPHOBIC CONSTITUENTS FROM SAID PELLETS AND AT LEAST PARTIALLY DRYING SAID PELLETS.
Claim 2
Independent Claim
152 words
A METHOD OF TREATING FINELY DIVIDED PEAT MOSS WHICH COMPRISES PROVIDING A MIXTURE INCLUDING (A) PEAT MOSS PARTICLES COMPRISING A HYDROPHILIC MATRIX AND HYDROPHOBUC CONSTITUENTS DISPERSED THEREIN, (B) A FIRST LIQUID CONSTITUTING A HYDROPHOBIC CONTINUOUS PHASE IN SUFFICIENT AMOUNTS TO FORM A FLUID SLURRY WITH (A), AND (C) A SECOND AQUEOUS LIQUID CONSISTING ESSENTIALLY OF WATER WHICH WETS SAID HYDROPHILIC MATRIX PREFERENTIALLY RELATIVE TO SAID FIRST LIQUID, SAID SECOND LIQUID BEING SUBSTANTIALLY IMMISICIBLE WITH SAID FIRST LIQUID AND PRESENT IN A AMOUNT BETWEEN ABOUT 130-400% BASED ON THE WEIGHT OF DRY SOLIDS, AGITATING SAID MIXTURE WHEREBY SAID FIRST LIQUID LEACHES AT LEAST PART OF SAID HYDROPHOBIC CONSTITUENTS AND SIMULTANEOUSLY SAID SECOND LIQUID WETS SAID HYDROPHILIC MATRIX AND AGGLOMERATES SAID LEACH PARTICLES AND SECOND AQUEOUS LIQUID INTO A MULTIPLICITY OF SUBSTANTIALLY DISCRETE PELLETS AND SEPARAT-E ING SAID FIRST LIQUID CONTAINING SAID HYDROPHOBIC CONSTITUENTS FROM SAID PELLETS AND AT LEAST PARTIALLY DRYING SAID PELLETS.
Claim 3
Dependent Claim
29 words
A method of treating peat moss as defined in claim 1, said first liquid being a petroleum aliphatic solvent having a boiling point range of about 30* - 300*C.
Claim 4
Dependent Claim
17 words
A method of treating peat moss as defined in claim 1, said first liquid being an alkane.
Claim 5
Dependent Claim
26 words
A method of treating peat moss as defined in claim 1, said first liquid being heptane, cyclohexane, benzene, toluene, xylene, ethylene dichloride, trichloroethylene, or carbon tetrachloride.
Claim 6
Dependent Claim
38 words
A method of treating peat moss as defined in claim 1, including the step of incorporating in said mixture of particles and liquids, a third liquid comprising a solvent for naturally occurring waxes and resins in said particles.
Claim 7
Dependent Claim
30 words
A method of treating peat moss as defined in claim 5, said third liquid being present in the proportion of 1 to 50 percent by volume of said first liquid.
Claim 8
Dependent Claim
29 words
A method of treating peat moss as defined in claim 5, said third liquid being benzene, toluene, xylene, ethylene dichloride, trichloroethylene, carbon tetrachloride, acetone, chloroform, isopropylalcohol or ethyl alcohol.
Claim 9
Dependent Claim
26 words
A method of treating peat moss as defined in claim 5, said third liquid being soluble in said first liquid but insoluble in said second liquid.
Claim 10
Dependent Claim
30 words
A method of treating peat moss as defined in claim 1, the proportion by volume of said peat moss particles being up to about 35 percent of said first liquid.
Claim 11
Dependent Claim
31 words
A method of treating peat moss as defined in claim 1, including the step of preparing said peat moss particles by grinding naturally-occurring peat moss and screening the ground peat moss.
Claim 12
Dependent Claim
22 words
A method of treating peat moss as defined in claim 10, wherein said peat moss particles have a size of <8 mesh.
Claim 13
Dependent Claim
25 words
A method of treating peat moss as defined in claim 10, wherein said peat moss particles are ground to have a size of <20 mesh.
Claim 14
Dependent Claim
24 words
A method of treating peat moss as defined in claim 1, wherein said peat moss particles contain up to about 80 percent naturally-occurring water.
Claim 15
Dependent Claim
24 words
A method of treating peat moss as defined in claim 1, wherein said peat moss particles contain up to about 30 percent naturally-occurring water.
Claim 16
Dependent Claim
23 words
A method of treating peat moss as defined in claim 1 wherein the aqueous liquid is within about 150 to 300 wt. percent.
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |