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Patent US2826481A successfully refreshed from Google Patents.
US2826481A
Expired / Lapsed
US
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Method of extracting uranium values from uranium bearing material
Assignee: Canadian Patents and Development Ltd
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Filing: 1955-11-07
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Granted: 1958-03-11
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Expires: 1975-11-07
Abstract
No abstract record available.
Inventors
- 👤 Forward Frank Arthur
- 👤 Halpern Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:44
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0221; C22B60/0226; C22B60/0234
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
THE METHOD OF RECOVERING VALUES FROM URANIUM BEARING STARTING MATERIAL CONTAINING COPPER VALUES WHICH COMPRISES THE STEPS OF FORMING A SLURRY COPRISED OF FINELY DIVIDED URANIUM BEARING MATERIAL CONTAINING COPPER VALUES, IRON SULPHIDE AND AN AQUEOUS SOLUTION OF THE GROUP CONSISTING OF WATER AND AN AQUEOUS ACID SULPHATE SOLUTION, HEATINGTHE SLURRY TO A TEMPERATURE ABOUVE ABOUT 80*C. IN A CLOSED REACTION VESSEL, FEEDING OXYGEN BEARING. OXIDIZING GAS INTO THE REACTION VESSEL IN AMOUNT SUFFICIENT TO MAINTAIN A PARTIAL PRESSURE OF OXYGEN IN THE VESSLE, CONTINUINGTHE REACTION TO DISSOLVE URANIUM VALUES IN THE LEACH SOLUTION STOPPING THE FLOW OF OXYGEN BEARING, OXIDIZING GAS TO THE REACTION VESSEL, DIGESTING THE SLURRY ON LEACH SOLUTION CONTAINING DISSOLVED METAL VALUES, IRON SULPHIDE AND UNDISSOLVED RESIDUE AT A TAMPERATURE ABOVE ATMOSPHERIC TEMPERATURE FOR A PERIOD OF TIME SUFFICIENT TO PRECIPATE AT LEAST A MAJOR PORTION OF THE DISSOLVED COPPER VALUES FROM THE SOLUTION, AND SEPSRATING LEACH SOLUTION CONTAINING DISSOLVED URANIUM VALUES FROM THE UNDISSOLVED RESIDUE AND PRECIPATED COPPER VALUES.
Claim 2
Independent Claim
164 words
THE METHOD OF RECOVERING VALUES FROM URANIUM BEARING STARTING MATERIAL CONTAINING COPPER VALUES WHICH COMPRISES THE STEPS OF FORMING A SLURRY COPRISED OF FINELY DIVIDED URANIUM BEARING MATERIAL CONTAINING COPPER VALUES, IRON SULPHIDE AND AN AQUEOUS SOLUTION OF THE GROUP CONSISTING OF WATER AND AN AQUEOUS ACID SULPHATE SOLUTION, HEATINGTHE SLURRY TO A TEMPERATURE ABOUVE ABOUT 80*C. IN A CLOSED REACTION VESSEL, FEEDING OXYGEN BEARING. OXIDIZING GAS INTO THE REACTION VESSEL IN AMOUNT SUFFICIENT TO MAINTAIN A PARTIAL PRESSURE OF OXYGEN IN THE VESSLE, CONTINUINGTHE REACTION TO DISSOLVE URANIUM VALUES IN THE LEACH SOLUTION STOPPING THE FLOW OF OXYGEN BEARING, OXIDIZING GAS TO THE REACTION VESSEL, DIGESTING THE SLURRY ON LEACH SOLUTION CONTAINING DISSOLVED METAL VALUES, IRON SULPHIDE AND UNDISSOLVED RESIDUE AT A TAMPERATURE ABOVE ATMOSPHERIC TEMPERATURE FOR A PERIOD OF TIME SUFFICIENT TO PRECIPATE AT LEAST A MAJOR PORTION OF THE DISSOLVED COPPER VALUES FROM THE SOLUTION, AND SEPSRATING LEACH SOLUTION CONTAINING DISSOLVED URANIUM VALUES FROM THE UNDISSOLVED RESIDUE AND PRECIPATED COPPER VALUES.
References Cited (Backward Citations)
US1098282A
Cited
US2662009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |