US3028231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing of metallic ores
Assignee: British Iron and Steel Research Association BISRA
•
Filing: 1959-12-17
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Granted: 1962-04-03
•
Expires: 1979-12-17
Abstract
No abstract record available.
Inventors
- 👤 Klemantaski Sidney
- 👤 Johnson Thomas William
- 👤 Ridgion James Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:59
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/06; C21B13/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A PROCESS FOR THE REDUCTIO OF IRON ORES WHICH COMPRISES THE STEPS OF INTRODUCING A PARTIALLY REDUCED PARTICUALTE IRON ORE, A PARTICULATE CARBONACEOUS FUEL AND A GAS SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND OXYGEN-ENRICHED AIR INTO A HIGH TEMPERATURE REACTOR, THE SAID THREE SUBSTANCES BEING INTRODUCED INTO THE REACTOR THROUGH AT LEAST ONE PORT IN THE FORM OF CONCENTRICALLY DISPOSED INDIVIDUAL STREAMS WHEREOF ONE STREAM IS AXIAL AND THE OTHER TWO STREAMS ARE CONCENTRICALLY, DISPOSED WITH RESPECT TO SAID AXIAL STREAM, THE THREE STREAMS UNITING WITHIN THE REACTOR TO BURN AND FORM A COMBUSTION ZONE WITHIN THE REACTOR TO PRODUCE A GAS HAVING A CO/CO2 RATIO THAT IS CAPABLE OF REDUCING THE PARTIALLY REDUCED ORE TO METAL AND MAINTAINING THE TEMPERATURE IN THE REACTOR AT NOT LESS THAN THE MELTING POINT OF THE METAL WHEREBY LIQUID METAL IS PRODUCED.
Claim 2
Dependent Claim
141 words
A PROCESS FOR THE REDUCTIO OF IRON ORES WHICH COMPRISES THE STEPS OF INTRODUCING A PARTIALLY REDUCED PARTICUALTE IRON ORE, A PARTICULATE CARBONACEOUS FUEL AND A GAS SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND OXYGEN-ENRICHED AIR INTO A HIGH TEMPERATURE REACTOR, THE SAID THREE SUBSTANCES BEING INTRODUCED INTO THE REACTOR THROUGH AT LEAST ONE PORT IN THE FORM OF CONCENTRICALLY DISPOSED INDIVIDUAL STREAMS WHEREOF ONE STREAM IS AXIAL AND THE OTHER TWO STREAMS ARE CONCENTRICALLY, DISPOSED WITH RESPECT TO SAID AXIAL STREAM, THE THREE STREAMS UNITING WITHIN THE REACTOR TO BURN AND FORM A COMBUSTION ZONE WITHIN THE REACTOR TO PRODUCE A GAS HAVING A CO/CO2 RATIO THAT IS CAPABLE OF REDUCING THE PARTIALLY REDUCED ORE TO METAL AND MAINTAINING THE TEMPERATURE IN THE REACTOR AT NOT LESS THAN THE MELTING POINT OF THE METAL WHEREBY LIQUID METAL IS PRODUCED.
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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) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |