Patent US2794702A successfully refreshed from Google Patents.
US2794702A
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Preparation of hydrolyzable titanium sulfate solutions from titaniferous slags
Assignee: Akzo Nobel Paints LLC
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Filing: 1954-07-06
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Granted: 1957-06-04
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Expires: 1974-07-06
Abstract
No abstract record available.
Inventors
- 👤 Allan Benjamin Wilson
- 👤 Frank O Rummery
- 👤 James M Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:51
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1218; C22B34/1227; C22B34/1236; C22B34/124; C22B34/125; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN A PROCESS FOR PREPARING A HYDROLYZABLE TITANIUM SULFATE SOLUTION FROM SMELTED TITANIFEROUS SLAG CONTAINING TITANIUM IN A LOWER STATE OF OXIDATION THAN CORRESPONDS TO TIO2 AND CONTAINING IRON IN A LOWER STATE OF OXIDATION THAN CORRESPONDS TO FERRIC OXIDE, WHEREIN THE SLAG IN A FINELY-DIVIDED CONDITION IS REACTED WITH CONCENTRATED SULFURIC ACID UNTIL A SOLID REACTION MIXTURE HAS BEEN FORMED HAVING SUBSTANTIALLY ALL OF THE REACTIVE TITANIUM OF THIS SLAG IN THE FORM OF SOLUBLE TITANIUM SULFATE, AND WHEREIN SAID SOLID REACTION PRODUCT IS TREATED WITH AQUEOUS SOLVENT TO EXTRACT SAID SOLUBLE TITANIUM SULFATE, THE IMPROVEMENT WHICH CONSISTS OF INITIALLY ROASTING SAID SLAG IN A FINELY-DIVIDED STATE UNDER OXIDIZING CONDITIONS AT TEMPERATURES BETWEEN ABOUT 400* C. AND 600* C. UNTIL AT LEAST A MAJOR PART OF THE LOWER STATE TITANIUM HAS BEEN OXIDIZED TO TIO2.
Claim 2
Dependent Claim
136 words
IN A PROCESS FOR PREPARING A HYDROLYZABLE TITANIUM SULFATE SOLUTION FROM SMELTED TITANIFEROUS SLAG CONTAINING TITANIUM IN A LOWER STATE OF OXIDATION THAN CORRESPONDS TO TIO2 AND CONTAINING IRON IN A LOWER STATE OF OXIDATION THAN CORRESPONDS TO FERRIC OXIDE, WHEREIN THE SLAG IN A FINELY-DIVIDED CONDITION IS REACTED WITH CONCENTRATED SULFURIC ACID UNTIL A SOLID REACTION MIXTURE HAS BEEN FORMED HAVING SUBSTANTIALLY ALL OF THE REACTIVE TITANIUM OF THIS SLAG IN THE FORM OF SOLUBLE TITANIUM SULFATE, AND WHEREIN SAID SOLID REACTION PRODUCT IS TREATED WITH AQUEOUS SOLVENT TO EXTRACT SAID SOLUBLE TITANIUM SULFATE, THE IMPROVEMENT WHICH CONSISTS OF INITIALLY ROASTING SAID SLAG IN A FINELY-DIVIDED STATE UNDER OXIDIZING CONDITIONS AT TEMPERATURES BETWEEN ABOUT 400* C. AND 600* C. UNTIL AT LEAST A MAJOR PART OF THE LOWER STATE TITANIUM HAS BEEN OXIDIZED TO TIO2.
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) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |