US4043764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for manufacturing combustible bricks from plant materials
Assignee: Bpifrance Financement SA
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Filing: 1976-04-16
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Granted: 1977-08-23
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Expires: 1996-04-16
Abstract
Abstract Combustible bricks are manufactured from plant materials by agglomeration under pressure of these materials after pulverization and drying. Prior to this, the plant materials are subjected to a fermentation and, in the course of fermentation, to a pulverization treatment while controlling this fermentation so as to obtain a destructuration of the cellulosic tissues of the plant materials without producing separation of the lignin. This process produces small bricks having a good strength and a low moisture content.
Inventors
- 👤 Daniel Loas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:29
CPC Classifications
C; C10; C10L; C10L5/00; C10L5/40; C10L5/44; Y; Y02; Y02E; Y02E50/00; Y02E50/10; Y02E50/30; Y10; Y10S; Y10S435/00; Y10S435/813; Y10S44/00; Y10S44/903; Y10S44/905
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
90 words
In a process for manufacturing combustible bricks from plant materials comprising pulverizing the plant materials, drying the pulverized plant materials and agglomerating the dried pulverized materials under pressure into bricks without using additional binders, the improvement comprising mixing the plant materials with other plant materials in an advanced stage of self fermentation and subjecting the materials in the course of the fermentation to a pulverisation treatment, while controlling said fermentation until particles having an expanded structure have been obtained without producing a separation of the lignin from the cellulosic tissues.
Claim 2
Dependent Claim
90 words
In a process for manufacturing combustible bricks from plant materials comprising pulverizing the plant materials, drying the pulverized plant materials and agglomerating the dried pulverized materials under pressure into bricks without using additional binders, the improvement comprising mixing the plant materials with other plant materials in an advanced stage of self fermentation and subjecting the materials in the course of the fermentation to a pulverisation treatment, while controlling said fermentation until particles having an expanded structure have been obtained without producing a separation of the lignin from the cellulosic tissues.
Claim 3
Dependent Claim
69 words
Process as claimed in claim 1 comprising subjecting the plant materials to a first fermentation stage by mixing said materials with other plant materials in an advanced stage of self fermentation, then subjecting the materials which start to ferment to a shredding, then to a second fermentation stage while stirring and, after pulverization, to a third fermentation stage while stirring until particles having an expanded structure have been obtained.
Claim 4
Dependent Claim
26 words
A process as claimed in claim 1, wherein each fermentation stage is controlled by a supervision of the rise in the temperature resulting from the fermentation.
Claim 5
Dependent Claim
18 words
A process as claimed in claim 1, wherein the fermentation reactions are regulated by the addition of catalysts.
Claim 6
Dependent Claim
21 words
A process as claimed in claim 1, wherein the fermentation reactions are regulated by the addition of inhibitors of fermentation reactions.
Claim 7
Dependent Claim
26 words
A process as claimed in claim 1, wherein the drying temperature is regulated by a metering of the supply of the plant products to be dried.
Claim 8
Dependent Claim
20 words
A process as claimed in claim 1, comprising homogenizing by recycling the dried plant products before their agglomeration by compression.
Claim 9
Dependent Claim
93 words
An installation for manufacturing combustible bricks from plant materials by agglomeration under pressure of said materials after a pulverization and drying thereof, comprising a first metering silo for mixing and initiating a fermentation of the plant materials, a device for shredding the materials issuing from the first silo, a second silo provided with a stirring and mixing device for effecting a fermentation of the materials issuing from the second silo, a device for pulverizing the materials issuing from the second silo, and a third silo for effecting a fermentation of the pulverized materials.
Claim 10
Dependent Claim
93 words
An installation for manufacturing combustible bricks from plant materials by agglomeration under pressure of said materials after a pulverization and drying thereof, comprising a first metering silo for mixing and initiating a fermentation of the plant materials, a device for shredding the materials issuing from the first silo, a second silo provided with a stirring and mixing device for effecting a fermentation of the materials issuing from the second silo, a device for pulverizing the materials issuing from the second silo, and a third silo for effecting a fermentation of the pulverized materials.
Claim 11
Dependent Claim
16 words
An installation as claimed in claim 8, wherein the fermentation silos have a downwardly-flared frustoconical shape.
Claim 12
Dependent Claim
38 words
Process as claimed in claim 1 wherein the plant materials in an advanced stage of self fermentation are forestry waste product having an advanced state of fermentation within the mass resulting from having been left for several weeks.
Claim 13
Dependent Claim
14 words
Process as claimed in claim 1 wherein the plant materials are forestry waste products.
References Cited (Backward Citations)
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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) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |