US2526658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for smelting iron ore
Assignee: Individual
•
Filing: 1943-11-25
•
Granted: 1950-10-24
•
Expires: 1963-11-25
Abstract
No abstract record available.
Inventors
- 👤 Eugene S Harman
- 👤 Fred H Loftus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:08
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/08; C21B13/10; C21B13/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
THE METHOD HEREIN DESCRIBED WHICH COMPRISES ADVANCING IRON ORE, TOGETHER WITH SLAGFORMING AND ORE-REDUCING MATERIALS, THROUGH A KILN ZONE HEATED TO A TEMPERATURE PROMOTIVE OF ORE REDUCTION, NODULIZING THE REDUCED ORE AND SLAG AND DELIVERING THEM IN NODULIZED CONDITION FROM SAID KILN ZONE INTO A STATIONARY MELTING FURNACE, DIRECTING HIGH TEMPERATURE FLAMES INTO THE MELTING FURNACE AND CONVERTING SAID NODULIZED METAL AND SLAG TO LIQUID CONDITION AND FORMING ON THE HEARTH OF SAID FURNACE A BATH OF MOLTEN METAL HAVING AN OVERLYING BLANKET OF SLAG, LEADING A STREAM OF FLAM AND HOT PRODUCTS OF COMBUSTION FROM SAID FURNACE INTO SAID KILN ZONE AND BY THE INJECTION OF INCANDESCENT CARBON INTO SAID STREAM ESTABLISHING A NON-OXIDIZING ATMOSPHERE IN SAID KILN ZONE.
Claim 2
Independent Claim
120 words
THE METHOD HEREIN DESCRIBED WHICH COMPRISES ADVANCING IRON ORE, TOGETHER WITH SLAGFORMING AND ORE-REDUCING MATERIALS, THROUGH A KILN ZONE HEATED TO A TEMPERATURE PROMOTIVE OF ORE REDUCTION, NODULIZING THE REDUCED ORE AND SLAG AND DELIVERING THEM IN NODULIZED CONDITION FROM SAID KILN ZONE INTO A STATIONARY MELTING FURNACE, DIRECTING HIGH TEMPERATURE FLAMES INTO THE MELTING FURNACE AND CONVERTING SAID NODULIZED METAL AND SLAG TO LIQUID CONDITION AND FORMING ON THE HEARTH OF SAID FURNACE A BATH OF MOLTEN METAL HAVING AN OVERLYING BLANKET OF SLAG, LEADING A STREAM OF FLAM AND HOT PRODUCTS OF COMBUSTION FROM SAID FURNACE INTO SAID KILN ZONE AND BY THE INJECTION OF INCANDESCENT CARBON INTO SAID STREAM ESTABLISHING A NON-OXIDIZING ATMOSPHERE IN SAID KILN ZONE.
References Cited (Backward Citations)
US1848710A
Cited
US2193845A
Cited
US809291A
Cited
US803886A
Cited
US839126A
Cited
US911870A
Cited
US930764A
Cited
US983453A
Cited
US1174729A
Cited
US1366383A
Cited
US1439957A
Cited
US1578280A
Cited
US1403576A
Cited
US1535174A
Cited
US1574932A
Cited
FR579804A
Cited
US1819238A
Cited
US1819239A
Cited
US1720055A
Cited
US1774333A
Cited
US1871848A
Cited
US1954350A
Cited
US1944874A
Cited
US1954351A
Cited
US2035550A
Cited
US2242219A
Cited
US2195866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-23 | 1954-04-24 | 1954-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-23 | 1958-04-24 | 1958-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-23 | 1962-04-24 | 1962-10-24 | $7700.00 | Window Closed / Lapsed |