US2819145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal value recovery from leached zone material
Assignee: Individual
•
Filing: 1952-10-15
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Granted: 1958-01-07
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Expires: 1972-10-15
Abstract
No abstract record available.
Inventors
- 👤 Robert F Mccullough
- 👤 William J Mcginnis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:57
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/026; C22B3/00; C22B60/0221; C22B60/0226; C22B60/0234; C22B60/0278; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A PROCESS FOR THE RECOVERY OF URANIUM VALUES FROM LEACHED ZONE MATERIAL OF THE FLORIDA PEBBLE PHOSPHATE OVERBURDEN WHICH COMPRISES ACIDULATING THE LEACHED ZONE MATERIAL WITH AQUEOUS ACID SOLUTION, ADMIXING A LIQUOR SELECTED FROM THE GROUP CONSISTING OF WATER AND AN AQUEOUS PHOSPHATE SOLUTION WITH THE ADMIXTURE, SLURRYING THE SAME, SEPARATING UNDISSOLVED SOLIDS FROM THE ACIDIC AQUEOUS MINERAL DIGEST SOLUTION CONTAINING PREDOMINANTLY ALUMINUM, PHOSPHTE AND SULFATE COMPONENTS, EFFECTING AT LEAST A PARTIAL REDUCTION OF THE URANIUM PRESENT IN THE RESULTANT AQUEOUS LIQUID TO THE QUADRIVALENT STATE, CONTACTING THE MINERAL DIGEST SOLUTION WITH AN ORGANIC SOLVENT CONTAINING AN ALKYL ACID ESTER OF AN ALKYL MONOHYDRIC ALCOHOL AND A PHOSPHORIC ACID SELECTED FROM THE GROUP CONSISTING OF ORTHOPHOSPHORIC ACID AND PYROPHOSPHORIC ACID, SEPARATING THE AQUEOUS PHASE FROM THE ORGANIC PHASE, TREATING THE ORGANIC PHASE WITH SUFFICIENT AQUEOUS HF TO PRECIPITATE APPRECIABLE QUANTITIES OF THE URANIUM PRESENT AND SEGREGATING THE URANIUM PRECIPITATE FROM THE AQUEOUS PHASE.
Claim 2
Dependent Claim
153 words
A PROCESS FOR THE RECOVERY OF URANIUM VALUES FROM LEACHED ZONE MATERIAL OF THE FLORIDA PEBBLE PHOSPHATE OVERBURDEN WHICH COMPRISES ACIDULATING THE LEACHED ZONE MATERIAL WITH AQUEOUS ACID SOLUTION, ADMIXING A LIQUOR SELECTED FROM THE GROUP CONSISTING OF WATER AND AN AQUEOUS PHOSPHATE SOLUTION WITH THE ADMIXTURE, SLURRYING THE SAME, SEPARATING UNDISSOLVED SOLIDS FROM THE ACIDIC AQUEOUS MINERAL DIGEST SOLUTION CONTAINING PREDOMINANTLY ALUMINUM, PHOSPHTE AND SULFATE COMPONENTS, EFFECTING AT LEAST A PARTIAL REDUCTION OF THE URANIUM PRESENT IN THE RESULTANT AQUEOUS LIQUID TO THE QUADRIVALENT STATE, CONTACTING THE MINERAL DIGEST SOLUTION WITH AN ORGANIC SOLVENT CONTAINING AN ALKYL ACID ESTER OF AN ALKYL MONOHYDRIC ALCOHOL AND A PHOSPHORIC ACID SELECTED FROM THE GROUP CONSISTING OF ORTHOPHOSPHORIC ACID AND PYROPHOSPHORIC ACID, SEPARATING THE AQUEOUS PHASE FROM THE ORGANIC PHASE, TREATING THE ORGANIC PHASE WITH SUFFICIENT AQUEOUS HF TO PRECIPITATE APPRECIABLE QUANTITIES OF THE URANIUM PRESENT AND SEGREGATING THE URANIUM PRECIPITATE FROM THE AQUEOUS PHASE.
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) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |