US4023979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing carbonaceous substances for use in synthetic-graphite and graphite-like bodies
Assignee: Forschungszentrum Jülich
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Filing: 1975-05-16
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Granted: 1977-05-17
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Expires: 1995-05-16
Abstract
Abstract Carbonaceous material such as carbon powder is coated with a carbonizable nder in a continuous process in which the carbon particles and the binder, preferably together with a solvent, are introduced continuously into a vessel in which a continuous stream of a liquid vehicle in which the binder is insoluble is likewise introduced. The coated particles are then separated from the liquid phase by decantation or filtration.
Inventors
- 👤 Hartmut Luhleich
- 👤 Hubertus Nickel
- 👤 Peter Pflaum
- 👤 Francesco Dias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:25
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/528; C04B35/532; C01; C01B; C01B32/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
A process for producing a carbonaceous mass for production of shaped bodies, comprising the steps of: slurrying particles of a carbonaceous filler selected from the group which consists of graphite, coke and carbon black in a binder at least partly dissolved in a solvent and selected from the group which consists of bitumens, pitch and tar, to produce a slurry of binder-coated particles; continuously dispersing said slurry by supplying it from a nozzle continuously and codirectionally into a continuous stream of liquid in which said binder is at most slightly soluble and which is miscible with said solvent to form discrete binder-coated grains of the filler; and decanting excess quantities of said liquid from said discrete binder-coated grains to form said mass.
Claim 2
Dependent Claim
122 words
A process for producing a carbonaceous mass for production of shaped bodies, comprising the steps of: slurrying particles of a carbonaceous filler selected from the group which consists of graphite, coke and carbon black in a binder at least partly dissolved in a solvent and selected from the group which consists of bitumens, pitch and tar, to produce a slurry of binder-coated particles; continuously dispersing said slurry by supplying it from a nozzle continuously and codirectionally into a continuous stream of liquid in which said binder is at most slightly soluble and which is miscible with said solvent to form discrete binder-coated grains of the filler; and decanting excess quantities of said liquid from said discrete binder-coated grains to form said mass.
Claim 3
Dependent Claim
14 words
The process defined in claim 1, further comprising the step of drying said mass.
Claim 4
Dependent Claim
20 words
The process defined in claim 1 wherein said slurry is supplied from said nozzle codirectionally into said stream of liquid.
Claim 5
Dependent Claim
16 words
The process defined in claim 1 wherein said solvent is tetrahydrofuran and said liquid is water.
Claim 6
Dependent Claim
36 words
The process defined in claim 1 wherein said slurry is formed continuously by metering said filler and said binder into a mixing vessel and agitating said binder and said filler in said vessel with a vibrator.
Claim 7
Dependent Claim
26 words
The process defined in claim 5 wherein said solvent is at least in part added to said binder prior to forming said slurry in said vessel.
Claim 8
Dependent Claim
37 words
The process defined in claim 6 wherein a portion of said solvent is added to said binder in said vessel and the remainder of said solvent is mixed with said slurry between said vessel and said nozzle.
References Cited (Backward Citations)
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US3634569A
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US3651179A
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US3567808A
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US3736159A
Cited
US3927187A
Cited
US3708451A
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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) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |