Patent US926781A successfully refreshed from Google Patents.
Patent US3036440A successfully refreshed from Google Patents.
US3036440A
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US
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Method of cooling briquettes of iron particles
Assignee: United States Steel Corp
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Filing: 1960-02-03
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Granted: 1962-05-29
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Expires: 1980-02-03
Abstract
No abstract record available.
Inventors
- 👤 Feinman Jerome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:11
CPC Classifications
F; F27; F27D; F27D15/00; F27D15/02; F27D15/0206; F27D15/0266; C; C21; C21B; C21B13/00; C21B13/0086; C22; C22B; C22B1/00; C22B1/26; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A METHOD OF COOLING BRIQUETTES OF FRESHLY REDUCED IRON PARTICLES INITIALLY AT A TEMPERATURE OF ABOUT 900 TO 1300F. COMPRISING SPRAYING THE BRIQUETTES WITH A VOLATILE LIQUID COOLANT WHICH IS OF THE GROUP CONSISTING OF AMMONIA AND LOW BOILING HYDROCARBONS AND IS EFFECTIVELY STABLE AND INERT UNDER THE CONDITIONS ENCOUNTERED, THEREBY VAPORIZING MOST OF THE COOLANT AND UTILIZING THE HEAT REQUIRED FOR ITS VAPORIZATION TO ASSIST IN COOLING THE BRIQUETTES, RECOVERING THE VAPORIZED COOLANT ALONG WITH MINOR QUANTITIES OF ITS DECOMPOSITION PRODUCTS, SEPARATELY RECOVERING ANY UNVAPORIZED COOLANT, COMBINING THE VAPORIZED AND UNVAPORIZED COOLANTS, LIUEFYING THE RECOVERED COOLANT, PURGING THE DECOMPOSITION PRODUCTS, REPLACING LOST COOLANT WITH FRESH COOLANT, AND RE-USING THE COOLANT IN THE PROCESS, THE COOLED BRIQUETTES BEING AT A TEMPERATURE OF ABOUT 200 TO 300F.
Claim 2
Independent Claim
126 words
A METHOD OF COOLING BRIQUETTES OF FRESHLY REDUCED IRON PARTICLES INITIALLY AT A TEMPERATURE OF ABOUT 900 TO 1300F. COMPRISING SPRAYING THE BRIQUETTES WITH A VOLATILE LIQUID COOLANT WHICH IS OF THE GROUP CONSISTING OF AMMONIA AND LOW BOILING HYDROCARBONS AND IS EFFECTIVELY STABLE AND INERT UNDER THE CONDITIONS ENCOUNTERED, THEREBY VAPORIZING MOST OF THE COOLANT AND UTILIZING THE HEAT REQUIRED FOR ITS VAPORIZATION TO ASSIST IN COOLING THE BRIQUETTES, RECOVERING THE VAPORIZED COOLANT ALONG WITH MINOR QUANTITIES OF ITS DECOMPOSITION PRODUCTS, SEPARATELY RECOVERING ANY UNVAPORIZED COOLANT, COMBINING THE VAPORIZED AND UNVAPORIZED COOLANTS, LIUEFYING THE RECOVERED COOLANT, PURGING THE DECOMPOSITION PRODUCTS, REPLACING LOST COOLANT WITH FRESH COOLANT, AND RE-USING THE COOLANT IN THE PROCESS, THE COOLED BRIQUETTES BEING AT A TEMPERATURE OF ABOUT 200 TO 300F.
References Cited (Backward Citations)
US1944857A
Cited
US2337008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-28 | 1965-11-27 | 1966-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-28 | 1969-11-27 | 1970-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-28 | 1973-11-27 | 1974-05-29 | $7700.00 | Window Closed / Lapsed |