US2794728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making a flowable solid ore-carbon mass
Assignee: Lesher and Associates Inc
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Filing: 1953-05-14
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Granted: 1957-06-04
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Expires: 1973-05-14
Abstract
No abstract record available.
Inventors
- 👤 Carl E Lesher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:46
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/16; C22B1/216
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
251 words
A PROCESS OF MAKING A FLOWABLE MASS OF FINE DISCRETE SOLIDS LARGELY MADE UP OF PARTICLES OF CARBONACEOUS MATERIAL AND PARTICLES OF MATERIAL WHIHC IS PREDOMINANTLY ORE ADHERENTLY CONNECTED TOGETHER COMPRISING PREHEATING FINELY DIVIDED MATERIAL WHICH IS PREDOMINANTLY ORE TO A TMEPERATURE ABOVE THE SOFTENING TEMPERATURE OF THE HEREINAFTER MENTIONED FINELY DIVIDED COKING CARBONACEOUS MATERIAL IN SOLID FORM, ADMIXING IN A MIXER THE PREHEATED MATERIAL WHICH IS PREDOMINANTLY ORE AND FINELY DIVIDED COKING CARBONACEOUS MATERIAL IN SOLID FORM, COMPLETING THE ADMIXING IN THE MIXER BEFORE THE FINELY DIVIDED CARBONACEOUS MATERIAL EXCEEDS A TEMPERATURE OF ABOUT 600* 650* F. AND MAINTINING THE SAME ADMIXED AS THE TEMPERATURE RISES UNTIL THE TEMPERATURE OF THE CARBONACEOUS MATERIAL APPROACHES ITS SOFTENING TEMPERATURE, THEN DISCHARGING THE MIXTURE FROM THE MIXER INTO A ROTATING RETORT WHEREIN THE MIXTURE IS AGITATED AND ADDING FURTHER HEAT TO THE MIXTURE THROUGH THE WALL OF THE RETORT SO THAT THE CARBONACEOUS MATERIAL SOFTENS AND BECOMES STICKY WHILE IN INTIMATE CONTACT WITH THE FINELY DIVIDED MATERIAL WHICH IS PREDOMINANTLY ORE, OBVIATING ANY TENDENCY OF THE RESPECTIVE MATERIALS TO SEGREGATE DURING AGITATION DECAUSE OF A DIFFERENT IN SPECIFIC GRAVITY, THE AGITATION CAUSING PARTICLES OF THE CARBONACEOUS MATERIAL AND PARTICLES OF THE MATERIAL WHICH IS PREDOMINANTLY ORE TO BECOME ADHERENTLY CONNECTED TOGETHER AS FINE SOLIDS FORMING A FLOWABLE MASS, AND CONTINUING THE HEATING AND AGITATION OF THE MIXTURE UNTIL THE MIXTURE ATTAINS A TEMPERATURE OF AT LEAST 850* F. BUT NOT SUBSTANTIALLY HIGHER THAN 1000* F. AND THE CARBONACEOUS MATERIAL RETURNS TO SOLID FORM.
Claim 2
Dependent Claim
251 words
A PROCESS OF MAKING A FLOWABLE MASS OF FINE DISCRETE SOLIDS LARGELY MADE UP OF PARTICLES OF CARBONACEOUS MATERIAL AND PARTICLES OF MATERIAL WHIHC IS PREDOMINANTLY ORE ADHERENTLY CONNECTED TOGETHER COMPRISING PREHEATING FINELY DIVIDED MATERIAL WHICH IS PREDOMINANTLY ORE TO A TMEPERATURE ABOVE THE SOFTENING TEMPERATURE OF THE HEREINAFTER MENTIONED FINELY DIVIDED COKING CARBONACEOUS MATERIAL IN SOLID FORM, ADMIXING IN A MIXER THE PREHEATED MATERIAL WHICH IS PREDOMINANTLY ORE AND FINELY DIVIDED COKING CARBONACEOUS MATERIAL IN SOLID FORM, COMPLETING THE ADMIXING IN THE MIXER BEFORE THE FINELY DIVIDED CARBONACEOUS MATERIAL EXCEEDS A TEMPERATURE OF ABOUT 600* 650* F. AND MAINTINING THE SAME ADMIXED AS THE TEMPERATURE RISES UNTIL THE TEMPERATURE OF THE CARBONACEOUS MATERIAL APPROACHES ITS SOFTENING TEMPERATURE, THEN DISCHARGING THE MIXTURE FROM THE MIXER INTO A ROTATING RETORT WHEREIN THE MIXTURE IS AGITATED AND ADDING FURTHER HEAT TO THE MIXTURE THROUGH THE WALL OF THE RETORT SO THAT THE CARBONACEOUS MATERIAL SOFTENS AND BECOMES STICKY WHILE IN INTIMATE CONTACT WITH THE FINELY DIVIDED MATERIAL WHICH IS PREDOMINANTLY ORE, OBVIATING ANY TENDENCY OF THE RESPECTIVE MATERIALS TO SEGREGATE DURING AGITATION DECAUSE OF A DIFFERENT IN SPECIFIC GRAVITY, THE AGITATION CAUSING PARTICLES OF THE CARBONACEOUS MATERIAL AND PARTICLES OF THE MATERIAL WHICH IS PREDOMINANTLY ORE TO BECOME ADHERENTLY CONNECTED TOGETHER AS FINE SOLIDS FORMING A FLOWABLE MASS, AND CONTINUING THE HEATING AND AGITATION OF THE MIXTURE UNTIL THE MIXTURE ATTAINS A TEMPERATURE OF AT LEAST 850* F. BUT NOT SUBSTANTIALLY HIGHER THAN 1000* F. AND THE CARBONACEOUS MATERIAL RETURNS TO SOLID FORM.
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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) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |