US2717205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating low grade ores
Assignee: Be Vant Mining and Refining Corp
•
Filing: 1950-07-12
•
Granted: 1955-09-06
•
Expires: 1970-07-12
Abstract
No abstract record available.
Inventors
- 👤 Enoch F Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:32
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/02; B; B03; B03C; B03C1/00; B03C1/005; B03C1/015; C22B1/14; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
THE PROCESS OF TREATING IRON ORE WHICH COMPRISES SINTERING PRETREATED CONCENTRATED ORE IN A FURNACE AND PROUCING HOT GASES THEREBY, USING SAID HOT GASES FOR PREHEATING AND DRYING RAW ORE TO BE TREATED OUT OF CONTACT WITH SAID GASES, CONVEYING THE PREHEATED ORE TO A REDUCING ORE TREATING CHAMBER, OBTAINING REDUCING GASES FROM THE EXPENDED HOT EXHAUST GASES BY REMOVING THE CO2 FROM SAID GASES, AGITATING THE PREHEATED ORE IN THE REDUCING CHAMBER AND PASSING THE REDUCING GAS FROM WHICH THE CO2 HAS BEEN SUBSTANTIALLY REMOVED THROUGH THE AGITATED ORE, AND HEATING THE ORE IN THE REDUCING CHAMBER BY AND OUT OF CONTACT WITH THE EXHAUST GASES FROM THE SINTERING OPERATION, WHILE THE ORE IS BEING AGITATED.
Claim 2
Dependent Claim
117 words
THE PROCESS OF TREATING IRON ORE WHICH COMPRISES SINTERING PRETREATED CONCENTRATED ORE IN A FURNACE AND PROUCING HOT GASES THEREBY, USING SAID HOT GASES FOR PREHEATING AND DRYING RAW ORE TO BE TREATED OUT OF CONTACT WITH SAID GASES, CONVEYING THE PREHEATED ORE TO A REDUCING ORE TREATING CHAMBER, OBTAINING REDUCING GASES FROM THE EXPENDED HOT EXHAUST GASES BY REMOVING THE CO2 FROM SAID GASES, AGITATING THE PREHEATED ORE IN THE REDUCING CHAMBER AND PASSING THE REDUCING GAS FROM WHICH THE CO2 HAS BEEN SUBSTANTIALLY REMOVED THROUGH THE AGITATED ORE, AND HEATING THE ORE IN THE REDUCING CHAMBER BY AND OUT OF CONTACT WITH THE EXHAUST GASES FROM THE SINTERING OPERATION, WHILE THE ORE IS BEING AGITATED.
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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) | 1958-09-05 | 1959-03-07 | 1959-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-05 | 1963-03-07 | 1963-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-05 | 1967-03-07 | 1967-09-06 | $7700.00 | Window Closed / Lapsed |