US3293004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for solvent extraction stripping
Assignee: Cyprus Amax Minerals Co
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Filing: 1963-02-25
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Granted: 1966-12-20
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Expires: 1983-02-25
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Musgrove
- 👤 Edward E Maurer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:02
CPC Classifications
C; C22; C22B; C22B3/00; C22B3/02; B; B01; B01D; B01D11/00; B01D11/04; B01D9/00; B01D9/0004; B01D9/0013; B01D9/005; C22B3/20; C22B3/26; C22B3/28; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
THE METHOD OF STRIPPING ORGANIC SOLUBLE QUATERNARY AMMONIUM COMPLEXES OF VANADIUM COMPOUNDS FROM AN ORGANIC EXTRACT SOLVENT WHICH COMPRISES THE STEPS OF MAINTAINING A VERTICAL COLUMN OF AN AQUEOUS STRIPPING SOLUTION CONTAINING ABOUT 200 GRAMS PER LITER OF AMMONIUM CHLORIDE AND SUFFICIENT FREE AMMONIA FOR MAINTAINING THE PH OF THE STRIPPING SOLUTION WITHIN A RANGE OF FROM ABOUT 8.3 TO ABOUT 8.5, SPRAYING SAID SOLVENT IN THE FORM OF DROPLETS INTO SAID AQUEOUS COLUMN NEAR THE LOWER END THEREOF EFFECTING A REACTION BETWEEN THE QUATERNARY AMMONIUM VANADIUM COMPLEX AND THE AMMONIUM CHLORIDE FORMING AN AQOUEOUS INSOLUBLE VANADIUM SALT PRECIPITATE AND REGENERATING THE QUATERNARY AMMONIUM COMPLEXING AGENT, MAINTAINING A FLOATING LAYER OF SAID SOLVENT ON THE TOP OF SAID AQUEOUS COLUMN, WITHDRAWING SAID ORGANIC SOLVENT CONTAINUOUSLY FROM SAIL LAYER, WITHDRAWING SAID AQUEOUS SOLUTION AND SAID PRECIPITATE FROM THE LOWER END OF SAID AQUEOUS COLUMN, AND SPRAYING MAKE-UP AQUEOUS SOLUTION INTO THE UPPER STREAM OF SAID ORGANIC LAYER.
Claim 2
Independent Claim
156 words
THE METHOD OF STRIPPING ORGANIC SOLUBLE QUATERNARY AMMONIUM COMPLEXES OF VANADIUM COMPOUNDS FROM AN ORGANIC EXTRACT SOLVENT WHICH COMPRISES THE STEPS OF MAINTAINING A VERTICAL COLUMN OF AN AQUEOUS STRIPPING SOLUTION CONTAINING ABOUT 200 GRAMS PER LITER OF AMMONIUM CHLORIDE AND SUFFICIENT FREE AMMONIA FOR MAINTAINING THE PH OF THE STRIPPING SOLUTION WITHIN A RANGE OF FROM ABOUT 8.3 TO ABOUT 8.5, SPRAYING SAID SOLVENT IN THE FORM OF DROPLETS INTO SAID AQUEOUS COLUMN NEAR THE LOWER END THEREOF EFFECTING A REACTION BETWEEN THE QUATERNARY AMMONIUM VANADIUM COMPLEX AND THE AMMONIUM CHLORIDE FORMING AN AQOUEOUS INSOLUBLE VANADIUM SALT PRECIPITATE AND REGENERATING THE QUATERNARY AMMONIUM COMPLEXING AGENT, MAINTAINING A FLOATING LAYER OF SAID SOLVENT ON THE TOP OF SAID AQUEOUS COLUMN, WITHDRAWING SAID ORGANIC SOLVENT CONTAINUOUSLY FROM SAIL LAYER, WITHDRAWING SAID AQUEOUS SOLUTION AND SAID PRECIPITATE FROM THE LOWER END OF SAID AQUEOUS COLUMN, AND SPRAYING MAKE-UP AQUEOUS SOLUTION INTO THE UPPER STREAM OF SAID ORGANIC LAYER.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |