US3966427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of briquettes
Assignee: Shell USA Inc
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Filing: 1975-01-17
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Granted: 1976-06-29
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Expires: 1995-01-17
Abstract
Abstract A process for producing briquettes from wet cakes or muds containing mineral ore, including coal particles, characterized in that a wet cake or a mud is mixed with a bituminous binder selected from the group consisting of powdered bitumen, molten bitumen and a bitumen emulsion, whereafter the resltant mixture is compressed into briquettes at a temperature which is at least equal to about the Ring and Ball temperature minus 40°C of the bitumen present in the binder, after which optionally the briquettes are dried.
Inventors
- 👤 Robert Herment
- 👤 Yves Lafage
- 👤 Jean Claude Emo
- 👤 Jean Marie Yurcek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:29
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/24; C22B1/242; C22B1/244; C10; C10L; C10L5/00; C10L5/02; C10L5/06; C10L5/10; C10L5/14; C10L5/16
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
126 words
A process for producing briquettes comprising admixing water-containing solid particles selected from the class consisting of mineral ore, coal and carbonaceous soot or a mud of said particles in a mixer with a bituminous binder selected from the group consisting of powdered bitumen, molten bitumen and bitumen emulsion, and then subsequently compressing the resultant mixture directly after mixing, without separation of a substantial amount of liquid water from the mixer, into briquettes at a temperature which is at least equal to about the softening point temperature, as measured by the Ring and Ball method, minus 40°C of the bitumen present in the bituminous binder, the amount of the binder being such that the briquettes contain from about 1 to about 12% by weight of said binder.
Claim 2
Dependent Claim
126 words
A process for producing briquettes comprising admixing water-containing solid particles selected from the class consisting of mineral ore, coal and carbonaceous soot or a mud of said particles in a mixer with a bituminous binder selected from the group consisting of powdered bitumen, molten bitumen and bitumen emulsion, and then subsequently compressing the resultant mixture directly after mixing, without separation of a substantial amount of liquid water from the mixer, into briquettes at a temperature which is at least equal to about the softening point temperature, as measured by the Ring and Ball method, minus 40°C of the bitumen present in the bituminous binder, the amount of the binder being such that the briquettes contain from about 1 to about 12% by weight of said binder.
Claim 3
Dependent Claim
54 words
The process of claim 1 wherein said admixing is effected at a temperature such that the temperature of the bulk mixture subsequent to admixing is below about 100°C and in excess of the softening point temperature as measured by the Ring and Ball method plus 10°C of the bitumen present in said bituminous binder.
Claim 4
Dependent Claim
21 words
The process of claim 1 wherein the briquettes produced contain a bitumen content of about 3% to about 5% by weight.
Claim 5
Dependent Claim
13 words
The process of claim 1 wherein said bituminous binder is a bitumen emulsion.
Claim 6
Dependent Claim
20 words
The process of claim 4 wherein the bitumen emulsion contains from about 40% to about 60% by weight of bitumen.
Claim 7
Dependent Claim
19 words
The process of claim 4 wherein said emulsion contains a bitumen having a penetration of 0-600 dmm at 25°C.
Claim 8
Dependent Claim
13 words
The process of claim 4 wherein said emulsion is an anionic bitumen emulsion.
Claim 9
Dependent Claim
19 words
The process of claim 7 wherein the emulsifier in the bitumen emulsion is a petroleum hydrocarbon-insoluble pinewood resin salt.
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) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |