Patent US2982663A successfully refreshed from Google Patents.
Patent US3024101A successfully refreshed from Google Patents.
US3024101A
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Updraft traveling grate pelletizing furnace
Assignee: Cleveland Cliffs Iron Co
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Filing: 1956-05-25
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Granted: 1962-03-06
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Expires: 1976-05-25
Abstract
No abstract record available.
Inventors
- 👤 Louis J Erck
- 👤 Donald C Violetta
- 👤 Thomas E Ban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:52
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/16; C22B1/20; C22B1/24; C22B1/2413; F; F27; F27B; F27B21/00; F27B21/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
THE METHOD OF AGGLOMERATING FINELY-DIVIDED, RAW, IRON-ORE CONCENTRATES IN WHICH THE MAJOR PORTION OF THE IRON IS PRESENT IN THE FORM OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF HEMATITE AND MAGNETITE WHICH COMPRISES THE STEPS OF FORMING GREEN BALLS OF SAID CONCENTRATES OF VARIOUS SIZES, DISTRIBUTING SAID GREEN BALLS AND SOLID FUEL ON A GRATE AS A BED OF GRADUATED GREEN BALL SIZE WITH THE LARGEST GREEN BALLS AT THE TOP OF THE BED, AND FLOWING GASES AT ELEVATED TEMPERATURES UPWARDLY THROUGH THE SAID BED AND THEREBY IGNITING AND BURNING THE SAID FUEL AND FIRING THE GREEN BALLS.
Claim 2
Independent Claim
100 words
THE METHOD OF AGGLOMERATING FINELY-DIVIDED, RAW, IRON-ORE CONCENTRATES IN WHICH THE MAJOR PORTION OF THE IRON IS PRESENT IN THE FORM OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF HEMATITE AND MAGNETITE WHICH COMPRISES THE STEPS OF FORMING GREEN BALLS OF SAID CONCENTRATES OF VARIOUS SIZES, DISTRIBUTING SAID GREEN BALLS AND SOLID FUEL ON A GRATE AS A BED OF GRADUATED GREEN BALL SIZE WITH THE LARGEST GREEN BALLS AT THE TOP OF THE BED, AND FLOWING GASES AT ELEVATED TEMPERATURES UPWARDLY THROUGH THE SAID BED AND THEREBY IGNITING AND BURNING THE SAID FUEL AND FIRING THE GREEN BALLS.
References Cited (Backward Citations)
US1508101A
Cited
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US1280281A
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US1292059A
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US2821469A
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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) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |