US3151933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent extraction process for the recovery of vanadium from solutions
Assignee: KERR MC GEE OIL IND Inc
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Filing: 1956-09-19
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Granted: 1964-10-06
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Expires: 1976-09-19
Abstract
No abstract record available.
Inventors
- 👤 Wayne C Hazen
- 👤 Angus V Hanrickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:36
CPC Classifications
C; C01; C01G; C01G31/00; C01G31/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PROCESS FOR RECOVERING VANADIUM VALUES FROM ACIDIC AQUEOUS SOLUTION COMPRISING THE STEPS OF SOLVENT EXTRACTING A PORTION OF AN ACIDIC AQUEOUS SOLUTION CONTAINING TETRAVALENT VANADIUM VALUES AND HAVING A PH BETWEEN 1.4 AND 3.0 WITH AN EXTRACTANT COMPRISING A SOLUTION OF DI-2-ETHYL HEXYL HYDROGEN PHOSPHATE IN A SUBSTANTIALLY WATER IMMISICIBLE ORGANIC LIQUID CARRIER, SEPARATING THE RESULTING VANADIUM CONTAINING EXTRACTANT FROM THE SOLVENT EXTRACTED AQUEOUS SOLUTION, STRIPPING THE VANADIUM FROM THE VANADIUM CONTAINING EXTRACTANT WITH AN AQUEOUS SULFURIC ACID STRIPPING AGENT, INTIMATELY CONTACTING THE EXTRACTANT WITH PHOSPHORIC ACID TO REDUCE POISONING OF THE EXTRACTANT, AND RECYCLING THE STRIPPED EXTRACTANT TO THE SOLVENT EXTRACTING STEP TO SOLVENT EXTRACT TETRAVALENT VANADIUM VALUES FROM AN ADDITIONAL PORTION OF THE ACIDIC AQUEOUS SOLUTION.
Claim 2
Dependent Claim
119 words
A PROCESS FOR RECOVERING VANADIUM VALUES FROM ACIDIC AQUEOUS SOLUTION COMPRISING THE STEPS OF SOLVENT EXTRACTING A PORTION OF AN ACIDIC AQUEOUS SOLUTION CONTAINING TETRAVALENT VANADIUM VALUES AND HAVING A PH BETWEEN 1.4 AND 3.0 WITH AN EXTRACTANT COMPRISING A SOLUTION OF DI-2-ETHYL HEXYL HYDROGEN PHOSPHATE IN A SUBSTANTIALLY WATER IMMISICIBLE ORGANIC LIQUID CARRIER, SEPARATING THE RESULTING VANADIUM CONTAINING EXTRACTANT FROM THE SOLVENT EXTRACTED AQUEOUS SOLUTION, STRIPPING THE VANADIUM FROM THE VANADIUM CONTAINING EXTRACTANT WITH AN AQUEOUS SULFURIC ACID STRIPPING AGENT, INTIMATELY CONTACTING THE EXTRACTANT WITH PHOSPHORIC ACID TO REDUCE POISONING OF THE EXTRACTANT, AND RECYCLING THE STRIPPED EXTRACTANT TO THE SOLVENT EXTRACTING STEP TO SOLVENT EXTRACT TETRAVALENT VANADIUM VALUES FROM AN ADDITIONAL PORTION OF THE ACIDIC AQUEOUS SOLUTION.
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) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |