Patent US2751307A successfully refreshed from Google Patents.
US2751307A
Expired / Lapsed
US
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Method for producing titanium concentrates
Assignee: NL Industries Inc
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Filing: 1954-07-23
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Granted: 1956-06-19
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Expires: 1974-07-23
Abstract
No abstract record available.
Inventors
- 👤 David L Armant
- 👤 Harold S Sigurdson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:32
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1204
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A METHOD FOR PRODUCING A DIGESTIBLE CONCENTRATE FROM TITANIFEROUS IRON ORE CONTAINING COMPOUNDS OF ALUMINUM AND SILICON, WHEREIN THE TIO2 CONTENT OF SAID ORE IS FROM 8% TO 60% BY WEIGHT, WHICH COMPRISES ADMIXING SAID ORE WITH AN OXIDIC COMPOUND OF CALCIUM AND COMPOUND SELECTED FROM THE GROUP CONSISTING OF OXIDIC COMPOUND OF SODIUM AN DOXIDIC COMPOUND OF POTASSIUM AND MIXTURES THEREOF AND A CARBONACEOUS REDUCING AGENT, HEATING SAID MIXTURE TO FORM A SLAG AND MOLTEN IRON AT A TEMPERATURE BETWEEN 1300* C. AND 1700* C. UNTIL THE FCO CONTENT OF SAID SLAG IS REDUCED TO BETWEEN 1% AND 5%, THE AMOUNT OF OXIDIC COMPOUND OF CALCIUM AND COMPOUND SELECTED FROM THE GROUP CONSISTING OF OXIDIC COMPOUND OF SODIUM AND OXIDIC COMPOUND OF POTASSIUM AND MIXTURES THEREOF PRESENT IN SAID MIXTURE BEING SUFFICIENT TO PRODUCE A SLAG WHICH CONTAINS BETWEEN 1% AND 5% OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF OXIDIC COMPOUND OF SODIUM AND OXIDIC COMPOUND OF POTASSIUM AND MIXTURES THEREOF, CALCULATED AS OXIDE AND IN WHICH THE WEIGHT RATIO:
Claim 2
Independent Claim
173 words
A METHOD FOR PRODUCING A DIGESTIBLE CONCENTRATE FROM TITANIFEROUS IRON ORE CONTAINING COMPOUNDS OF ALUMINUM AND SILICON, WHEREIN THE TIO2 CONTENT OF SAID ORE IS FROM 8% TO 60% BY WEIGHT, WHICH COMPRISES ADMIXING SAID ORE WITH AN OXIDIC COMPOUND OF CALCIUM AND COMPOUND SELECTED FROM THE GROUP CONSISTING OF OXIDIC COMPOUND OF SODIUM AN DOXIDIC COMPOUND OF POTASSIUM AND MIXTURES THEREOF AND A CARBONACEOUS REDUCING AGENT, HEATING SAID MIXTURE TO FORM A SLAG AND MOLTEN IRON AT A TEMPERATURE BETWEEN 1300* C. AND 1700* C. UNTIL THE FCO CONTENT OF SAID SLAG IS REDUCED TO BETWEEN 1% AND 5%, THE AMOUNT OF OXIDIC COMPOUND OF CALCIUM AND COMPOUND SELECTED FROM THE GROUP CONSISTING OF OXIDIC COMPOUND OF SODIUM AND OXIDIC COMPOUND OF POTASSIUM AND MIXTURES THEREOF PRESENT IN SAID MIXTURE BEING SUFFICIENT TO PRODUCE A SLAG WHICH CONTAINS BETWEEN 1% AND 5% OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF OXIDIC COMPOUND OF SODIUM AND OXIDIC COMPOUND OF POTASSIUM AND MIXTURES THEREOF, CALCULATED AS OXIDE AND IN WHICH THE WEIGHT RATIO:
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) | 1959-06-19 | 1959-12-19 | 1960-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-19 | 1963-12-19 | 1964-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-19 | 1967-12-19 | 1968-06-19 | $7700.00 | Window Closed / Lapsed |