US4236929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapid strength development in compacting glass batch materials
Assignee: BALL PACKAGING PRODUCTS Inc A CORP OF
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Filing: 1979-06-15
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Granted: 1980-12-02
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Expires: 1999-06-15
Abstract
Abstract An improved process for producing an acceleration in strength for glass batch materials after they have been compacted as in the form of briquettes. The method comprises forming an intimate mixture of glass-forming materials, admixing therein an alkali metal salt selected from the group consisting of sodium carbonate, potassium carbonate, and sodium sulfate adding between about 4 to about 10 weight percent water to hydrate said alkali metal salt and moisten said glass-forming materials, compacting said moistened materials to individual units, and subjecting the units after their formation to cooling air currents to maintain said freshly formed units at a temperature 90° F., or below for 30 minutes or less.
Inventors
- 👤 Stanley A. Byers
- 👤 James R. McKee, Sr.
- 👤 Marvin C. Gridley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:47
CPC Classifications
C; C03; C03C; C03C1/00; C03C1/02; C03C1/026
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
108 words
A method of forming discrete bodies of glass batch materials having high crush strength within about 10 minutes or less after their formation which comprises forming a mixture of glass batch materials including sand, admixing an alkali metal salt therewith, said salt being a member selected from the group consisting of sodium carbonate, potassium carbonate, and sodium sulfate, adding between about 4 to about 10 weight percent water to moisten and hydrate the alkali metal salt, compacting the moistened batch materials to form distinct units, and subjecting said units after their compaction to ambient cooling air currents at a rate sufficient to contact substantially all the distinct units.
Claim 2
Independent Claim
108 words
A method of forming discrete bodies of glass batch materials having high crush strength within about 10 minutes or less after their formation which comprises forming a mixture of glass batch materials including sand, admixing an alkali metal salt therewith, said salt being a member selected from the group consisting of sodium carbonate, potassium carbonate, and sodium sulfate, adding between about 4 to about 10 weight percent water to moisten and hydrate the alkali metal salt, compacting the moistened batch materials to form distinct units, and subjecting said units after their compaction to ambient cooling air currents at a rate sufficient to contact substantially all the distinct units.
Claim 3
Dependent Claim
26 words
A method as recited in claim 1 wherein the distinct units are maintained at a temperature below about 90° F., for less than about 10 minutes.
Claim 4
Dependent Claim
24 words
A method as recited in claim 1 wherein the retained water of said discrete bodies is between about 4 to about 10 weight percent.
Claim 5
Dependent Claim
14 words
A method of claim 1 wherein the compacting includes briquetting the moistened glass materials.
Claim 6
Dependent Claim
23 words
A method of claim 1 wherein the temperature is maintained below about 50° F., and the time is less than about 5 minutes.
Claim 7
Independent Claim
119 words
A method of achieving high crush strengths within about 10 minutes or less for glass batch materials in the form of discrete units comprising forming an intimate mixture of glass-forming materials, admixing therein an alkali metal salt selected from the group consisting of sodium carbonate, potassium carbonate, and sodium sulfate, adding between about 4 to about 10 weight percent water to hydrate said alkali metal salt and moisten said glass-forming materials, compacting said moistened materials to discrete units, and continually subjecting the units after their formation to ambient cooling air currents at a rate sufficient to contact substantially all the units to maintain said units at a temperature less than about 90° F., for about 10 minutes or less.
Claim 8
Independent Claim
119 words
A method of achieving high crush strengths within about 10 minutes or less for glass batch materials in the form of discrete units comprising forming an intimate mixture of glass-forming materials, admixing therein an alkali metal salt selected from the group consisting of sodium carbonate, potassium carbonate, and sodium sulfate, adding between about 4 to about 10 weight percent water to hydrate said alkali metal salt and moisten said glass-forming materials, compacting said moistened materials to discrete units, and continually subjecting the units after their formation to ambient cooling air currents at a rate sufficient to contact substantially all the units to maintain said units at a temperature less than about 90° F., for about 10 minutes or less.
Claim 9
Independent Claim
59 words
A method of accelerating the resistance to breakage of a freshly compacted body having sand, water and alkali metal salt therein, said method comprising cooling said body after compacting to avoid any substantial loss of water therefrom by subjecting the body after its formation to ambient cooling air currents at a rate sufficient to contact substantially all the body.
Claim 10
Independent Claim
59 words
A method of accelerating the resistance to breakage of a freshly compacted body having sand, water and alkali metal salt therein, said method comprising cooling said body after compacting to avoid any substantial loss of water therefrom by subjecting the body after its formation to ambient cooling air currents at a rate sufficient to contact substantially all the body.
Claim 11
Dependent Claim
12 words
A method of claim 7 wherein the cooling is below 90° F.
Claim 12
Dependent Claim
12 words
A method of claim 7 wherein the cooling is below 50° F.
Claim 13
Dependent Claim
23 words
A method of claim 7 wherein the compacting is carried out at a pressure of at least about 5 tons per lineal inch.
Claim 14
Independent Claim
86 words
A method of accelerating the resistance to breakage of a freshly compacted body comprising mixing glass batch materials comprising sand, water and alkali metal salt, the amount of water between about 0.1 to about 0.55 times the weight of the alkali metal salt in the batch materials, compacting the glass batch materials into discrete bodies, and passing ambient cool air continually over the freshly compacted bodies at a rate sufficient to contact substantially all of said bodies and to avoid any substantial loss of water therefrom.
Claim 15
Independent Claim
86 words
A method of accelerating the resistance to breakage of a freshly compacted body comprising mixing glass batch materials comprising sand, water and alkali metal salt, the amount of water between about 0.1 to about 0.55 times the weight of the alkali metal salt in the batch materials, compacting the glass batch materials into discrete bodies, and passing ambient cool air continually over the freshly compacted bodies at a rate sufficient to contact substantially all of said bodies and to avoid any substantial loss of water therefrom.
Claim 16
Dependent Claim
12 words
A method of claim 11 wherein the cooling is below 90° F.
Claim 17
Dependent Claim
12 words
A method of claim 11 wherein the cooling is below 50° F.
Claim 18
Dependent Claim
23 words
A method of claim 11 wherein the compacting is carried out at a pressure of at least about 5 tons per linear inch.
Claim 19
Dependent Claim
66 words
A hard, freshly formed, compact unit of glass batch material made by the process of forming a mixture of glass batch materials, admixing an alkali metal salt therewith, adding sufficient water to hydrate the alkali metal salt, compacting the hydrated batch material to form a distinct, compact unit, and subjecting said unit after its formation to ambient cooling air currents to contact substantially all said unit.
Claim 20
Dependent Claim
66 words
A hard, freshly formed, compact unit of glass batch material made by the process of forming a mixture of glass batch materials, admixing an alkali metal salt therewith, adding sufficient water to hydrate the alkali metal salt, compacting the hydrated batch material to form a distinct, compact unit, and subjecting said unit after its formation to ambient cooling air currents to contact substantially all said unit.
Claim 21
Dependent Claim
126 words
A durable, freshly formed, compact briquette having a density of between about 1.90 to about 2.20 comprising sand and limestone made by the process of forming an intimate mixture of glass-forming materials including sand and limestone, admixing therein an alkali metal salt selected from the group consisting of sodium carbonate, potassium carbonate, and sodium sulfate, adding between about 4 to about 10 weight percent water to hydrate said alkali metal salt and moisten said glass-forming materials, briquetting said moistened materials to discrete units, and continually subjecting the units immediately after their formation to ambient cooling air currents at a rate sufficient to contact substantially all of said units and to maintain said units at a temperature of about 90° F., for less than about 10 minutes.
Claim 22
Dependent Claim
126 words
A durable, freshly formed, compact briquette having a density of between about 1.90 to about 2.20 comprising sand and limestone made by the process of forming an intimate mixture of glass-forming materials including sand and limestone, admixing therein an alkali metal salt selected from the group consisting of sodium carbonate, potassium carbonate, and sodium sulfate, adding between about 4 to about 10 weight percent water to hydrate said alkali metal salt and moisten said glass-forming materials, briquetting said moistened materials to discrete units, and continually subjecting the units immediately after their formation to ambient cooling air currents at a rate sufficient to contact substantially all of said units and to maintain said units at a temperature of about 90° F., for less than about 10 minutes.
References Cited (Backward Citations)
US2220750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |