US2793933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing lithium salts from lithium minerals
Assignee: CIE GEOL ET MINIERE DES INGENI
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Filing: 1953-10-06
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Granted: 1957-05-28
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Expires: 1973-10-06
Abstract
No abstract record available.
Inventors
- 👤 Kroll Adolphe Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:09
CPC Classifications
C; C22; C22B; C22B26/00; C22B26/10; C22B26/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
THE METHOD OF PRODUCING LITHIUM SALTS FROM SILICOALUMINOUS LITHIUM ORES, WHICH COMPRISES CALCINING THE ORE AT A TEMPERATURE FROM ABOUT 1100* TO ABOUT 1300* C. TO A STATE OF AT LEAST PARTIAL FUSION AND VITRIFICATION, WHEREBY THE ORE IS CONVERTED INTO A VITREOUS AND SUBSTANTIALLY NON-CRYSTALLINE STATE, COOLING AND FINELY GRINDING THE CALCINED MASS, AND EXTRACTING THE LITHIUM AS A SALT THEREFROM WITH AN AQUEOUS LEACHING SOLUTION OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC ACID, SODIUM CHLORIDE, POTASSIUM CHLORIDE, SODIUM SULFATE, POTASSIUM SULFATE, SODIUM NITRATE, POTASSIUM NITRATE, SODIUM NITRITE, POTASSIUM NITRITE, CALCIUM CHLORIDE, CALCIUM NITRATE AND CALCIUM NITRITE, AT SUPERATMOSPHERIC PRESSURE AND AT A TEMPERATURE FROM ABOUT 100* TO ABOUT 400*C.
Claim 2
Independent Claim
114 words
THE METHOD OF PRODUCING LITHIUM SALTS FROM SILICOALUMINOUS LITHIUM ORES, WHICH COMPRISES CALCINING THE ORE AT A TEMPERATURE FROM ABOUT 1100* TO ABOUT 1300* C. TO A STATE OF AT LEAST PARTIAL FUSION AND VITRIFICATION, WHEREBY THE ORE IS CONVERTED INTO A VITREOUS AND SUBSTANTIALLY NON-CRYSTALLINE STATE, COOLING AND FINELY GRINDING THE CALCINED MASS, AND EXTRACTING THE LITHIUM AS A SALT THEREFROM WITH AN AQUEOUS LEACHING SOLUTION OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC ACID, SODIUM CHLORIDE, POTASSIUM CHLORIDE, SODIUM SULFATE, POTASSIUM SULFATE, SODIUM NITRATE, POTASSIUM NITRATE, SODIUM NITRITE, POTASSIUM NITRITE, CALCIUM CHLORIDE, CALCIUM NITRATE AND CALCIUM NITRITE, AT SUPERATMOSPHERIC PRESSURE AND AT A TEMPERATURE FROM ABOUT 100* TO ABOUT 400*C.
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) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |