US2933373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beneficiation of titaniferous iron ores
Assignee: Titanium Metals Corp
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Filing: 1957-05-06
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Granted: 1960-04-19
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Expires: 1977-05-06
Abstract
No abstract record available.
Inventors
- 👤 Frank E Love
- 👤 Leland R Lyons
- 👤 John C Priscu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:05
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1204; C22B34/1209; C22B1/00; C22B1/02; C22B1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A METHOD FOR PRODUCING A TITANIUM DIOXIDE CONCENTRATE FROM A TITANIFEROUS IRON ORE WHICH COMPRISES, REDUCING THE IRON CONTENT OF SAID ORE ESSENTIALLY TO DIVALENT STATE, FORMING A MIXTURE OF SAID REDUCED ORE IN THE FORM OF PARTICLES OF AVERAGE SIZE BETWEEN 30 MESH AND 150 MESH WITH A CARBONACEOUS REDUCING AGENT OF AVERAGE PARTICLE SIZE BETWEEN 20 AND 100 MESH IN AMOUNTS SO THAT CARBONACEOUS REDUCING AGENT AMOUNTS TO BETWEEN 15% AND 35% OF THE ORE, HEATING AND MAINTAINING SAID MIXTURE IN AN ENCLOSED SPACE AT A TEMPERATURE BETWEEN 800*C. AND 1200*C. MEANWHILE PASSING CHLORINE AND AN OXYGEN CONTAINING GAS UPWARDLY THERETHROUGH AND MAINTAINING SAID MIXTURE IN TURBULENT MOTION AND ADDING CARBONACEOUS REDUCING AGENT TO MAINTAIN THE CONTENT THEREOF BETWEEN 15% AND 35% OF THE ORE SAID CHLORINE BEING PASSED AT A RATE AND IN TOTAL AMOUNT OF CONVERT AT LEAST A MAJOR PART OF THE REDUCED IRON CONTENT OF SAID ORE TO FERROUS CHLORIDE AND THE REMAINDER TO FERRIC CHLORIDE, HEREBY TO SEPARATE IRON FROM SAID MIXTURE PRINCIPALLY AS FERROUS CHLORIDE, LEAVING A RESIDUE COMPRISING A TITANIUM DIOXIDE CONCENTRATE SUBSTANTIALLY FREE FROM IRON.
Claim 2
Independent Claim
185 words
A METHOD FOR PRODUCING A TITANIUM DIOXIDE CONCENTRATE FROM A TITANIFEROUS IRON ORE WHICH COMPRISES, REDUCING THE IRON CONTENT OF SAID ORE ESSENTIALLY TO DIVALENT STATE, FORMING A MIXTURE OF SAID REDUCED ORE IN THE FORM OF PARTICLES OF AVERAGE SIZE BETWEEN 30 MESH AND 150 MESH WITH A CARBONACEOUS REDUCING AGENT OF AVERAGE PARTICLE SIZE BETWEEN 20 AND 100 MESH IN AMOUNTS SO THAT CARBONACEOUS REDUCING AGENT AMOUNTS TO BETWEEN 15% AND 35% OF THE ORE, HEATING AND MAINTAINING SAID MIXTURE IN AN ENCLOSED SPACE AT A TEMPERATURE BETWEEN 800*C. AND 1200*C. MEANWHILE PASSING CHLORINE AND AN OXYGEN CONTAINING GAS UPWARDLY THERETHROUGH AND MAINTAINING SAID MIXTURE IN TURBULENT MOTION AND ADDING CARBONACEOUS REDUCING AGENT TO MAINTAIN THE CONTENT THEREOF BETWEEN 15% AND 35% OF THE ORE SAID CHLORINE BEING PASSED AT A RATE AND IN TOTAL AMOUNT OF CONVERT AT LEAST A MAJOR PART OF THE REDUCED IRON CONTENT OF SAID ORE TO FERROUS CHLORIDE AND THE REMAINDER TO FERRIC CHLORIDE, HEREBY TO SEPARATE IRON FROM SAID MIXTURE PRINCIPALLY AS FERROUS CHLORIDE, LEAVING A RESIDUE COMPRISING A TITANIUM DIOXIDE CONCENTRATE SUBSTANTIALLY FREE FROM IRON.
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) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |