US2498766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for controlling dust in sintering operations
Assignee: Carnegie Illinois Steel Corp
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Filing: 1948-01-15
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Granted: 1950-02-28
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Expires: 1968-01-15
Abstract
No abstract record available.
Inventors
- 👤 Wilbur H Pettigrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:35
CPC Classifications
F; F27; F27B; F27B21/00; F27B21/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
IN THE SINTERING OF BLAST FURNACE FLUE DUST, WHEREIN A RELATIVELY THIN COMBUSTION ZONE IS MAINTAINED THROUGH THE LENGTH OF A MOVING SINTER BED AND COMBUSTION IS SUPPORTED BY A DOWN-DRAFT OF AIR THROUGH THE BED, THE IMPROVEMENT WHICH COMPRISES ADDING MOISTURE TO THE BED AT A PLURALITY OF LOCATIONS SPACED THROUGH THE LENGTH THEREOF AS COMBUSTION PROCEEDS TO MAINTAIN THE MOISTURE CONTENT OF THE UNSINTERED MATERIAL IN THE BED BENEATH THE COMBUSTION ZONE AT LEAST 14 PERCENT THROUGHOUT AND NOT GREATER THAN 17 PERCENT PROXIMATE TO THE COMBUSTION ZONE.
Claim 2
Dependent Claim
90 words
IN THE SINTERING OF BLAST FURNACE FLUE DUST, WHEREIN A RELATIVELY THIN COMBUSTION ZONE IS MAINTAINED THROUGH THE LENGTH OF A MOVING SINTER BED AND COMBUSTION IS SUPPORTED BY A DOWN-DRAFT OF AIR THROUGH THE BED, THE IMPROVEMENT WHICH COMPRISES ADDING MOISTURE TO THE BED AT A PLURALITY OF LOCATIONS SPACED THROUGH THE LENGTH THEREOF AS COMBUSTION PROCEEDS TO MAINTAIN THE MOISTURE CONTENT OF THE UNSINTERED MATERIAL IN THE BED BENEATH THE COMBUSTION ZONE AT LEAST 14 PERCENT THROUGHOUT AND NOT GREATER THAN 17 PERCENT PROXIMATE TO THE COMBUSTION ZONE.
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) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |