US2812232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of scale formation in uranium solvent extractor
Assignee: Individual
•
Filing: 1953-11-16
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Granted: 1957-11-05
•
Expires: 1973-11-16
Abstract
No abstract record available.
Inventors
- 👤 John W Delaplaine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:46
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A METHOD OF PREVENTING SCALE FORMATION DURING SELECTIVE SOLVENT EXTRACTION OF URANYL NITRATE FROM AN AQUEOUS FEED MATERIAL WHICH COMPRISES PREHEATING THE FEED MATERIAL TO A TEMPERATURE IN THE RANGE OF ABOUT 150* TO 250*F., COOLING THE HOT FEED MATERIAL TO ATMOSPHERIC TEMPERATURE WHILE CONTINOUSLY AGITATING THE SLURRY TO PROMOTE CRYSTALLIZATION AND PRECIPITATION OF SILICA AND METAL SALTS, CONTROLLING THE URANIUM CONCENTRATION OF THE FEED MATERIAL ABOVE ABOUT 200 GRAMS PER LITER, CHARGING THE FEED MATERIAL INTO AN EXTRACTION ZONE INTO INTIMATE CONTACT WITH AN ORGANIC SELECTIVE SOLVENT, ADJUSTING THE CONCENTRATION OF URANYL NITRATE IN THE ORGANIC PHASE DISCHARGING FROM THE EXTRACTION ZONE TO ABOUT 65 TO ABOUT 95 PERCENT OF THE SATURATION VALUE BY CONTROLLING THE ORGANIC TO AQUEOUS PHASE RATIO IN THE EXTRACTION ZONE, AND MAINTAINING AN INCREASING NITRIC ACID CONCENTRATION GRADIENT IN THE AQUEOUS PHASE IN THE EXTRACTION ZONE BY PARTIALLY SATURATING THE ORGANIC SELECTIVE SOLVENT ENTERING SAID ZONE WITH NITRIC ACID AT A LEVEL OF ABOUT 70 TO ABOUT 80%.
Claim 2
Independent Claim
164 words
A METHOD OF PREVENTING SCALE FORMATION DURING SELECTIVE SOLVENT EXTRACTION OF URANYL NITRATE FROM AN AQUEOUS FEED MATERIAL WHICH COMPRISES PREHEATING THE FEED MATERIAL TO A TEMPERATURE IN THE RANGE OF ABOUT 150* TO 250*F., COOLING THE HOT FEED MATERIAL TO ATMOSPHERIC TEMPERATURE WHILE CONTINOUSLY AGITATING THE SLURRY TO PROMOTE CRYSTALLIZATION AND PRECIPITATION OF SILICA AND METAL SALTS, CONTROLLING THE URANIUM CONCENTRATION OF THE FEED MATERIAL ABOVE ABOUT 200 GRAMS PER LITER, CHARGING THE FEED MATERIAL INTO AN EXTRACTION ZONE INTO INTIMATE CONTACT WITH AN ORGANIC SELECTIVE SOLVENT, ADJUSTING THE CONCENTRATION OF URANYL NITRATE IN THE ORGANIC PHASE DISCHARGING FROM THE EXTRACTION ZONE TO ABOUT 65 TO ABOUT 95 PERCENT OF THE SATURATION VALUE BY CONTROLLING THE ORGANIC TO AQUEOUS PHASE RATIO IN THE EXTRACTION ZONE, AND MAINTAINING AN INCREASING NITRIC ACID CONCENTRATION GRADIENT IN THE AQUEOUS PHASE IN THE EXTRACTION ZONE BY PARTIALLY SATURATING THE ORGANIC SELECTIVE SOLVENT ENTERING SAID ZONE WITH NITRIC ACID AT A LEVEL OF ABOUT 70 TO ABOUT 80%.
References Cited (Backward Citations)
US2227833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |