Patent US2803537A successfully refreshed from Google Patents.
US2803537A
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Separation of nickel from cobalt
Assignee: Societe Generale Metallurgique de Hoboken SA
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Filing: 1955-07-21
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Granted: 1957-08-20
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Expires: 1975-07-21
Abstract
No abstract record available.
Inventors
- 👤 Merre Marcel De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:02
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/04; C22B23/0476; C22B23/0484; C25; C25C; C25C1/00; C25C1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A PROCESS FOR THE SEPARATION OF NICKEL FROM COBALT, BOTH CONTAINED IN A PRIMARY SOLUTION OF SALTS OF A CLASS CONSISTING OF SULFATES AND CHLORIDES, IN A RATIO NI:CO HIGHER THAN ABOUT 0.5, WHICH COMPRISES INTRODUCING NICKELOUS AND COBALTOUS HYDROXIDES OF NI AND CO INTO THE PRIMARY SOLUTION OF NI-CO, SUBJECTING THE SOLUTION CONTAINING THE HYDROXIDES TO A REDUCTION PROCESS BY MEANS OF A HYDROGEN-CONTAINING REDUCING GAS AT A TEMPERATURE ABOVE NORMAL AND AT SUPER-ATMOSPHERIC PRESSURE, THE AMOUNT OF NICKELOUS AND COBALTOUS HYDROXIDES INTRODUCED INTO THE PRIMARY SOLUTION BEING SUCH THAT ANY ACID FREED DURING THE REACTION WHICH WOULD BRING THE PH BELOW 2 SHALL BE NEUTRALIZED WHILST THE HYDROXIDES ADDED ARE DISSOLVED, THUS PRECIPITATING IN METAL FORM NICKEL ORIGINATING BOTH FROM THE PRIMARY SOLUTION AND FROM THE DISSOLVED HYDROXIDES AND CONCENTRATING COBALT IN THE SOLUTION, AND REMOVING THE PRECIPITATE OF NICKEL.
Claim 2
Dependent Claim
142 words
A PROCESS FOR THE SEPARATION OF NICKEL FROM COBALT, BOTH CONTAINED IN A PRIMARY SOLUTION OF SALTS OF A CLASS CONSISTING OF SULFATES AND CHLORIDES, IN A RATIO NI:CO HIGHER THAN ABOUT 0.5, WHICH COMPRISES INTRODUCING NICKELOUS AND COBALTOUS HYDROXIDES OF NI AND CO INTO THE PRIMARY SOLUTION OF NI-CO, SUBJECTING THE SOLUTION CONTAINING THE HYDROXIDES TO A REDUCTION PROCESS BY MEANS OF A HYDROGEN-CONTAINING REDUCING GAS AT A TEMPERATURE ABOVE NORMAL AND AT SUPER-ATMOSPHERIC PRESSURE, THE AMOUNT OF NICKELOUS AND COBALTOUS HYDROXIDES INTRODUCED INTO THE PRIMARY SOLUTION BEING SUCH THAT ANY ACID FREED DURING THE REACTION WHICH WOULD BRING THE PH BELOW 2 SHALL BE NEUTRALIZED WHILST THE HYDROXIDES ADDED ARE DISSOLVED, THUS PRECIPITATING IN METAL FORM NICKEL ORIGINATING BOTH FROM THE PRIMARY SOLUTION AND FROM THE DISSOLVED HYDROXIDES AND CONCENTRATING COBALT IN THE SOLUTION, AND REMOVING THE PRECIPITATE OF NICKEL.
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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |