US3028218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for facilitating the extraction of aluminum from aluminum containing materials
Assignee: BLANCS DE ZINC de la MEDITERRA
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Filing: 1957-07-30
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Granted: 1962-04-03
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Expires: 1977-07-30
Abstract
No abstract record available.
Inventors
- 👤 Gregoire Ferdinand
- 👤 Richard Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:14
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/02; C01F7/04; C01F7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A METHOD OF FACILITATING EXTRACTION OF ALUMINUM FROM MINERAL MATERIALS CONTAINING ALUMINUM OXIDE TOGETHER WITH COMPOUNDS OF IRON, CONSISTING OF THE STEPS OF MIXING SAID MATERIAL WITH SODIUM CARBONATE, THE WEIGHT OF WHICH IS AT LEAST 90% THAT OF SAID MINERAL MATERIAL AND WITH BORAX, THE WEIGHT OF BORAX BEING EQUAL TO 1 TO 2% OF THE WEIGHT OF ALUMINUM OXIDE IN THE MINERAL MATERIAL, AND THENCE SINTERING THE MIXTURE AT A TEMPERATURE OF FROM 800 TO 850*C. FOR A PERIOD OF FROM 10 TO 30 MINUTES SO THAT THE ALUMINIUM COMPOUNDS IN THE MIXTURE ARE RENDERED WATER SOLUBLE, THENCE WASHING THE SINTERED PRODUCT WITH BOILING WATER AND THENCE FILTERING THE MATERIAL SO THAT THE ALUMINUM COMPOUNDS ARE IN SOLUTION AND THE IRON COMPOUNDS ARE IN THE RESIDUUM.
Claim 2
Independent Claim
128 words
A METHOD OF FACILITATING EXTRACTION OF ALUMINUM FROM MINERAL MATERIALS CONTAINING ALUMINUM OXIDE TOGETHER WITH COMPOUNDS OF IRON, CONSISTING OF THE STEPS OF MIXING SAID MATERIAL WITH SODIUM CARBONATE, THE WEIGHT OF WHICH IS AT LEAST 90% THAT OF SAID MINERAL MATERIAL AND WITH BORAX, THE WEIGHT OF BORAX BEING EQUAL TO 1 TO 2% OF THE WEIGHT OF ALUMINUM OXIDE IN THE MINERAL MATERIAL, AND THENCE SINTERING THE MIXTURE AT A TEMPERATURE OF FROM 800 TO 850*C. FOR A PERIOD OF FROM 10 TO 30 MINUTES SO THAT THE ALUMINIUM COMPOUNDS IN THE MIXTURE ARE RENDERED WATER SOLUBLE, THENCE WASHING THE SINTERED PRODUCT WITH BOILING WATER AND THENCE FILTERING THE MATERIAL SO THAT THE ALUMINUM COMPOUNDS ARE IN SOLUTION AND THE IRON COMPOUNDS ARE IN THE RESIDUUM.
References Cited (Backward Citations)
GB190917246A
Cited
US1334004A
Cited
US2375343A
Cited
US2637628A
Cited
US2469088A
Cited
US2721793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |