Patent US3126827A successfully refreshed from Google Patents.
US2830871A
Expired / Lapsed
US
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Uranium recovery process
Assignee: Individual
•
Filing: 1951-07-16
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Granted: 1958-04-15
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Expires: 1971-07-16
Abstract
No abstract record available.
Inventors
- 👤 Kaufman David
- 👤 Charles S Abrams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:52
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/0278
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A PROCESS FOR SELECTIVELY RECOVERING A HIGH GRADE YRANIUM CONCENTRATE FROM A LOW GRADE URANIUM CONTAINING HYDROXIDE PRECIPATE THAT HAS BEEN OBTAINED BY THE REACTION OF AN ALKALINE EARTH METAL HYDROXIDE UPON A SULFURIC ACID LEACH LIQUOR CONTAINING URANIUM, SAID PRECIPITATE ALSO CONTAINING LARGE AMOUNTS OF HYDRATED SILICA AND IRON AND ALUMINUN HYDROXIDES, WHICH COMPRISES DIGEST ING SAID PRECIPITATE WITH HOT WATER AT 85-95*C., FILTERING, THEN LEACHING SAID PRECIPITATE AT LEAST TWICE AT A PH BETWEEN 9 AND 11 WITH AQUEOUS NA2CO3 SOLUTIONS, SEPARATING THE LEACH LIQOUR FROM THE LEACHED SOLID RESIDUE, ADDING ACID TO THE LEACHED LIQOUR TO CAUSE THE EVOLUTION OF CARBON DIOXIDE, AND THEN ADDING AMMONIA TO THE LEACH LIQOUR TO CAUSE THE PRECIPITATION OF URANIUM VALUES THEREFROM.
Claim 2
Dependent Claim
121 words
A PROCESS FOR SELECTIVELY RECOVERING A HIGH GRADE YRANIUM CONCENTRATE FROM A LOW GRADE URANIUM CONTAINING HYDROXIDE PRECIPATE THAT HAS BEEN OBTAINED BY THE REACTION OF AN ALKALINE EARTH METAL HYDROXIDE UPON A SULFURIC ACID LEACH LIQUOR CONTAINING URANIUM, SAID PRECIPITATE ALSO CONTAINING LARGE AMOUNTS OF HYDRATED SILICA AND IRON AND ALUMINUN HYDROXIDES, WHICH COMPRISES DIGEST ING SAID PRECIPITATE WITH HOT WATER AT 85-95*C., FILTERING, THEN LEACHING SAID PRECIPITATE AT LEAST TWICE AT A PH BETWEEN 9 AND 11 WITH AQUEOUS NA2CO3 SOLUTIONS, SEPARATING THE LEACH LIQOUR FROM THE LEACHED SOLID RESIDUE, ADDING ACID TO THE LEACHED LIQOUR TO CAUSE THE EVOLUTION OF CARBON DIOXIDE, AND THEN ADDING AMMONIA TO THE LEACH LIQOUR TO CAUSE THE PRECIPITATION OF URANIUM VALUES THEREFROM.
References Cited (Backward Citations)
US1001480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |