US3069235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Caustic beneficiation of titanium-source materials
Assignee: Dow Chemical Co
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Filing: 1959-09-25
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Granted: 1962-12-18
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Expires: 1979-09-25
Abstract
No abstract record available.
Inventors
- 👤 Dale L Schechter
- 👤 James J Leddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:15
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1204; C22B34/1209
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
THE METHOD OF TREATING TITANIUM-BEARING SOURCE MATERIAL CONTAIMINATED WITH IRON TO PRODUCE A BENEFICIATED TITANIUM SOURCE MATERIAL LOW IN IRON WHICH CONSISTS OF HEATING THE IRON-CONTAMINATED TITANIUM SOURCE MATERIAL WITH SUBSTANTIALLY SOLID SODIUM HYDORXIDE IN THE RATIO OF AT LEAST 2 PARTS BY WEIGHT OF SODIUM HYDORXIDE TO 1 PART OF THE TITANIUM SOURCE MATERIAL AT A TEMPERATURE OF BETWEEN ABOUT 350* AND 425*C. FOR AT LEAST 2 HOURS WHILE SIMULTANEOUSLY INTRODUCING A GAS CONTAINING ELEMENTAL OXYGEN TO PRODUCE THEREIN BOTH IRON COMPOUNDS SOLUBLE IN HYDROCHLORIC ACID AND TITANIUM COMPOUNDS INSOLUBLE INHYDROCHLORIC ACID, COOLING AND SEPARATING THE INSOLUBLE PORTIONS OF THE REACTION PRODUCT CONTAINING SUBSTANTIALLY ALL THE TITANIUM VALUES FROM THE SOLUBLE PORTIONS THEREOF CONTAINING A SUBSTANTIAL PORTION OF THE IRON ORIGINALLY PRESENT IN THE CONTAMINATED TITANIUM-BEARING MATERIAL, PULVERIZING AND ACID LEACHING THE INSOLUBLE PORTION THEREOF.
Claim 2
Independent Claim
136 words
THE METHOD OF TREATING TITANIUM-BEARING SOURCE MATERIAL CONTAIMINATED WITH IRON TO PRODUCE A BENEFICIATED TITANIUM SOURCE MATERIAL LOW IN IRON WHICH CONSISTS OF HEATING THE IRON-CONTAMINATED TITANIUM SOURCE MATERIAL WITH SUBSTANTIALLY SOLID SODIUM HYDORXIDE IN THE RATIO OF AT LEAST 2 PARTS BY WEIGHT OF SODIUM HYDORXIDE TO 1 PART OF THE TITANIUM SOURCE MATERIAL AT A TEMPERATURE OF BETWEEN ABOUT 350* AND 425*C. FOR AT LEAST 2 HOURS WHILE SIMULTANEOUSLY INTRODUCING A GAS CONTAINING ELEMENTAL OXYGEN TO PRODUCE THEREIN BOTH IRON COMPOUNDS SOLUBLE IN HYDROCHLORIC ACID AND TITANIUM COMPOUNDS INSOLUBLE INHYDROCHLORIC ACID, COOLING AND SEPARATING THE INSOLUBLE PORTIONS OF THE REACTION PRODUCT CONTAINING SUBSTANTIALLY ALL THE TITANIUM VALUES FROM THE SOLUBLE PORTIONS THEREOF CONTAINING A SUBSTANTIAL PORTION OF THE IRON ORIGINALLY PRESENT IN THE CONTAMINATED TITANIUM-BEARING MATERIAL, PULVERIZING AND ACID LEACHING THE INSOLUBLE PORTION THEREOF.
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) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |