Patent US2769686A successfully refreshed from Google Patents.
US2769686A
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Recovery of mineral values from leached zone material overlying florida pebble phosphate deposits
Assignee: Individual
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Filing: 1952-12-08
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Granted: 1956-11-06
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Expires: 1972-12-08
Abstract
No abstract record available.
Inventors
- 👤 Robert F Mccullough
- 👤 Baron Ira M Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:03
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/02; C01F7/20; C01F7/26; C01C; C01C1/00; C01C1/24; C01C1/242; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A PROCESS FOR RECOVERING MINERAL VALUES FROM LEACHED ZONE MATERIAL FROM THE FLORIDA PEBBLE PHOSPHATE OVERBURDEN WHICH COMPRISES REACTING LEACHED ZONE MATERIAL OF A PARTICLE SIZE SMALLER THAN ABOUT 150 MESH WITH SULFURIC ACID OF A CONCENTRATION BETWEEN ABOUT 20% AND ABOUT 55% SULFURIC ACID IN AN AMOUNT OF BETWEEN ABOUT 55% AND ABOUT 105% OF THE AMOUNT REQUIRED TO REACT WITH ALL OF THE CONSTITUENT CAPABLE OF REACTING WITH SULFURIC ACID, SEPARATING INSOLUBLE MATERIAL FROM AQUEOUS SOLUTION OF REACTION PRODUCTS, TREATING THE AQUEOUS SOLUTION WITH AN AMOUNT OF SULFATE OF AMMONIA SUFFICIENT TO CRYSTALLIZE A MAJOR PORTION OF THE ALUMINUM AS AMMONIUM ALUM, SEPARTING THE ALUM CRYSTALS FROM THE AQUEOUS MEDIUM AND SEPARATELY RECOVERING FROM THE RESULTANT AQUEOUS SOLUTION URANIUM AND PHOSPHORUS VALUES.
Claim 2
Dependent Claim
124 words
A PROCESS FOR RECOVERING MINERAL VALUES FROM LEACHED ZONE MATERIAL FROM THE FLORIDA PEBBLE PHOSPHATE OVERBURDEN WHICH COMPRISES REACTING LEACHED ZONE MATERIAL OF A PARTICLE SIZE SMALLER THAN ABOUT 150 MESH WITH SULFURIC ACID OF A CONCENTRATION BETWEEN ABOUT 20% AND ABOUT 55% SULFURIC ACID IN AN AMOUNT OF BETWEEN ABOUT 55% AND ABOUT 105% OF THE AMOUNT REQUIRED TO REACT WITH ALL OF THE CONSTITUENT CAPABLE OF REACTING WITH SULFURIC ACID, SEPARATING INSOLUBLE MATERIAL FROM AQUEOUS SOLUTION OF REACTION PRODUCTS, TREATING THE AQUEOUS SOLUTION WITH AN AMOUNT OF SULFATE OF AMMONIA SUFFICIENT TO CRYSTALLIZE A MAJOR PORTION OF THE ALUMINUM AS AMMONIUM ALUM, SEPARTING THE ALUM CRYSTALS FROM THE AQUEOUS MEDIUM AND SEPARATELY RECOVERING FROM THE RESULTANT AQUEOUS SOLUTION URANIUM AND PHOSPHORUS VALUES.
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) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |