US2851350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing titanium enriched slag
Assignee: Pechiney SA
•
Filing: 1956-10-31
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Granted: 1958-09-09
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Expires: 1976-10-31
Abstract
No abstract record available.
Inventors
- 👤 Tardieu Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:18
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1204; C22B34/1209; Y; Y10; Y10S; Y10S266/00; Y10S266/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IMPROVEMENT IN THE PROCESS FOR TREATING TITANIFEROUS ORE CONTAINING OXIDES OF TITANIUM AND OF IRON TO INCREASE THE TITANIUM OXIDE CONTENT THEREOF, WHEREIN THE IRON OXIDES ARE REDUCED WITH CARBONACEOUS MATERIAL TO FORM CAST IRON AND A SLAG ENRICHED IN TITANIUM OXIDE, COMPRISING THE FOLLOWING STEPS: SUBJECTING A MIXTURE OF THE ORE AND CARBONACEOUS MATERIAL TO PROLONGED HEATING WITHIN THE RANGE OF 400* TO 1300*C.; THEREAFTER SUBJECTING THE HEATED MIXTURE FOR A BRIED PERIOD OF ABOUT 10 TO 45 MINUTES TO FURTHER HEATING WITHIN THE RANGE OF 1800*-2500* C. AND, FINALLY, HEATING THE MIXTURE WITHIN THE RANGE OF 1300* TO LESS THAN 1800*C. TO CAUSE SEPARATION OF CAST IRON AND TITANIUM OXIDE ENRICHED SLAG, AND THEREAFTER RECOVERING THE ENRICHED SLAG.
Claim 2
Dependent Claim
120 words
IMPROVEMENT IN THE PROCESS FOR TREATING TITANIFEROUS ORE CONTAINING OXIDES OF TITANIUM AND OF IRON TO INCREASE THE TITANIUM OXIDE CONTENT THEREOF, WHEREIN THE IRON OXIDES ARE REDUCED WITH CARBONACEOUS MATERIAL TO FORM CAST IRON AND A SLAG ENRICHED IN TITANIUM OXIDE, COMPRISING THE FOLLOWING STEPS: SUBJECTING A MIXTURE OF THE ORE AND CARBONACEOUS MATERIAL TO PROLONGED HEATING WITHIN THE RANGE OF 400* TO 1300*C.; THEREAFTER SUBJECTING THE HEATED MIXTURE FOR A BRIED PERIOD OF ABOUT 10 TO 45 MINUTES TO FURTHER HEATING WITHIN THE RANGE OF 1800*-2500* C. AND, FINALLY, HEATING THE MIXTURE WITHIN THE RANGE OF 1300* TO LESS THAN 1800*C. TO CAUSE SEPARATION OF CAST IRON AND TITANIUM OXIDE ENRICHED SLAG, AND THEREAFTER RECOVERING THE ENRICHED SLAG.
References Cited (Backward Citations)
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US2417101A
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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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |