US2932552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extraction of uranium
Assignee: Commonwealth Scientific and Industrial Research Organisation
•
Filing: 1956-01-03
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Granted: 1960-04-12
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Expires: 1976-01-03
Abstract
No abstract record available.
Inventors
- 👤 Weiss Donald Eric
- 👤 Swinton Everard Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:49
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/0265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
225 words
A METHOD OF CONTINUOUSLY URANIUM FROM A LIQUID CONTAINING URANIUM IN THE DISSOLVED STATE COMPRISING PASSING A FLOW OF THE LIQUID IN AN UPWARD DIRECTION THROUGH A SUBSTANTIALLY COMPACT BED OF ANION-EXCHANGE RESIN IN THE FORM OF BEADS OF SIZE RANGE BETWEEN 10 AND 30 MESH DISPOSED BELOW A SUBSTANTIALLY HORIZONTAL PERFORATED SCREEN WHILE COMPLETELY IMMERSING SAID BED IN SAID FLOW, THE FLOW RATE OF SAID LIQUID BEING HIGHER THAN THE SEDIMENTATION VELOCITY OF THE BULK OF THE RESIN IN SAID LIQUID WHEREBY THE BULK OF SAID BED IS RETAINED AGAINST THE LOWER SIDE OF THE PERFORATED SCREEN, FEEDING IN ELUTED RESIN TO THE TOP OF THE BED THROUGH AN OPENING IN THE SCREEN, MAINTAINING A HEAD OF RESIN IN COMMUNICATION WITH SAID OPENING TO A HEIGHT ABOVE THE HIGHEST LIQUID LEVEL IN THE COLUMN, PULSATING SAID FLOW AT A FREQUENCY AND AT AN AMPLITUDE SUCH THAT SAID BED IS MOMENTARILY EXPANDED DURING A PORTION OF EACH PULSE CYCLE, WHEREBY ANY FINELY DIVIDED SOLIDS IN SAID FLOW ARE ENABLED TO PROGRESS THROUGH SAID BED, AND RECOMPACTED DURING ANOTHER PORTION OF EACH PULSE CYCLE SO THAT GROSS TURNOVER OF THE BED IS AVOIDED AND THE SOLUBLE URANIUM IN SAID FLOW IS ADSORBED ON SUCCESSIVE ZONES OF THE BED, THE SEMI-FLUIDIZED CONDITION OF THE BED THUS CREATED PROMOTING SEGREGATION OF THE HEAVIER URAMIUM-LOADED RESIN BEADES TOWARDS THE
Claim 2
Independent Claim
225 words
A METHOD OF CONTINUOUSLY URANIUM FROM A LIQUID CONTAINING URANIUM IN THE DISSOLVED STATE COMPRISING PASSING A FLOW OF THE LIQUID IN AN UPWARD DIRECTION THROUGH A SUBSTANTIALLY COMPACT BED OF ANION-EXCHANGE RESIN IN THE FORM OF BEADS OF SIZE RANGE BETWEEN 10 AND 30 MESH DISPOSED BELOW A SUBSTANTIALLY HORIZONTAL PERFORATED SCREEN WHILE COMPLETELY IMMERSING SAID BED IN SAID FLOW, THE FLOW RATE OF SAID LIQUID BEING HIGHER THAN THE SEDIMENTATION VELOCITY OF THE BULK OF THE RESIN IN SAID LIQUID WHEREBY THE BULK OF SAID BED IS RETAINED AGAINST THE LOWER SIDE OF THE PERFORATED SCREEN, FEEDING IN ELUTED RESIN TO THE TOP OF THE BED THROUGH AN OPENING IN THE SCREEN, MAINTAINING A HEAD OF RESIN IN COMMUNICATION WITH SAID OPENING TO A HEIGHT ABOVE THE HIGHEST LIQUID LEVEL IN THE COLUMN, PULSATING SAID FLOW AT A FREQUENCY AND AT AN AMPLITUDE SUCH THAT SAID BED IS MOMENTARILY EXPANDED DURING A PORTION OF EACH PULSE CYCLE, WHEREBY ANY FINELY DIVIDED SOLIDS IN SAID FLOW ARE ENABLED TO PROGRESS THROUGH SAID BED, AND RECOMPACTED DURING ANOTHER PORTION OF EACH PULSE CYCLE SO THAT GROSS TURNOVER OF THE BED IS AVOIDED AND THE SOLUBLE URANIUM IN SAID FLOW IS ADSORBED ON SUCCESSIVE ZONES OF THE BED, THE SEMI-FLUIDIZED CONDITION OF THE BED THUS CREATED PROMOTING SEGREGATION OF THE HEAVIER URAMIUM-LOADED RESIN BEADES TOWARDS THE
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |