Patent US5175093A successfully refreshed from Google Patents.
US3218152A
Expired / Lapsed
US
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Process for separating non-molten slag from titanium-containing iron sand
Assignee: Individual
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Filing: 1964-09-09
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Granted: 1965-11-16
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Expires: 1984-09-09
Abstract
No abstract record available.
Inventors
- 👤 Sasabe Takao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:27
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1204; C22B34/1209; C21; C21B; C21B13/00; C21B13/006; C21B13/10; C21B13/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A PROCESS FOR SEPARATING TITANIUM COMPONENT SLAG FROM TITANIUM-CONTAINING IRON SAND WHICH COMPRISES FROMING TITANIUM-CONTAINING IRON SAND PELLETS, CHARGING A REDUCING FURNACE WITH SAID PELLETS, HEATING SAID PELLETS FROM ROOM TEMPERATURE UP TO 1350*C. TO 1500*C. IN 30 TO 140 MINUTES, WHILE IN CONTACT WITH A REDUCING AGENT, UNTIL HOLLOW BALLS ARE FORMED HAVING AN OUTER CRUST CONSISTING OF AN OUTER LAYER COMPOSED OF REDUCED METALLIC IRON AND AN INNER LAYER COMPOSED OF SLAG WHICH CONTAINS SUBSTANTIALLY ALL THE TITANIUM ORIGINALLY N THE TITANIUM-CONTAINING IRON SAND, REMOVING SAID HOLLOW BALLS FROM SAID REDUCING FURNACE AFTER HAVING REACHED SAID TEMPERATURE, AND COOLING SAID HOLLOW BALLS TO AMBIENT TEMPERATURE, CRUSHING SAID HOLLOW BALLS AND MAGNETICALLY DRESSING THE SOOBTAINED CRUSHED BALLS, THEREBY SEPARATING THE MAGNETIC IRON FROM THE TITANIUM-CONTAINING SLAG.
Claim 2
Dependent Claim
127 words
A PROCESS FOR SEPARATING TITANIUM COMPONENT SLAG FROM TITANIUM-CONTAINING IRON SAND WHICH COMPRISES FROMING TITANIUM-CONTAINING IRON SAND PELLETS, CHARGING A REDUCING FURNACE WITH SAID PELLETS, HEATING SAID PELLETS FROM ROOM TEMPERATURE UP TO 1350*C. TO 1500*C. IN 30 TO 140 MINUTES, WHILE IN CONTACT WITH A REDUCING AGENT, UNTIL HOLLOW BALLS ARE FORMED HAVING AN OUTER CRUST CONSISTING OF AN OUTER LAYER COMPOSED OF REDUCED METALLIC IRON AND AN INNER LAYER COMPOSED OF SLAG WHICH CONTAINS SUBSTANTIALLY ALL THE TITANIUM ORIGINALLY N THE TITANIUM-CONTAINING IRON SAND, REMOVING SAID HOLLOW BALLS FROM SAID REDUCING FURNACE AFTER HAVING REACHED SAID TEMPERATURE, AND COOLING SAID HOLLOW BALLS TO AMBIENT TEMPERATURE, CRUSHING SAID HOLLOW BALLS AND MAGNETICALLY DRESSING THE SOOBTAINED CRUSHED BALLS, THEREBY SEPARATING THE MAGNETIC IRON FROM THE TITANIUM-CONTAINING SLAG.
References Cited (Backward Citations)
US2811434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |