US2693405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of separating copper values from and ammoniacal solution
Assignee: Viridian Inc Canada
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Filing: 1952-06-20
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Granted: 1954-11-02
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Expires: 1972-06-20
Abstract
No abstract record available.
Inventors
- 👤 Mackiw Vladimir Nicolaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:03
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/04; C22B23/0453; C22B23/0461; C01; C01G; C01G3/00; C01G3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
THE METHOD OF SEPARATING COPPER VALUES FROM AN AMMONIACAL SOLUTION CONTAINING IN SOLUTION COPPER VALUES, AT LEAST ONE SULPHUR COMPOUND OF THE GROUP THIOSULPHATE, TRITHIONATE AND TETRATHIONATE, VALUES OF AT LEAST ONE OF THE METALS NICKEL AND COBALT AND FREE AMMONIA IN EXCESS OF ABOUT 60 GRAMS PER LITRE, WHICH COMPRISES THE STEPS OF ACTIVELY AGITATING THE SOLUTION AT A TEMPERATURE ABOVE ABOUT 190* F. FOR A PERIOD OF TIME SUFFICIENT TO CONVERT THE MAJOR PORTION OF THE DISSOLVED COPPER VALUES TO AND PRECIPITATE THEM AS COPPER SULPHIDES SUBSTANTIALLY FREE OF NICKEL OR COBALT VALUES, SEPARATING PRECIPITATED COPPER SULPHIDES FROM THE AMMONIACAL SOLUTION, ADDING TO THE SOLUTION A METAL SULPHIDE HAVING A HIGHER SOLUBILITY PRODUCT IN AMMONIACAL SOLUTION THAN THE SOLUBILITY PRODUCTS OF COPPER SULPHIDES AND AGITATING THE SOLUTION AT A TEMPERATURE ABOVE ABOUT 190* F. IN THE PRESENCE OF AN OXYGEN BEARING, OXIDIZING GAS, TO CONVERT SUBSTANTIALLY THE REMAINDER OF THE DISSOLVED COPPER VALUES TO AND PRECIPITATE THEM AS COPPER SULPHIDES, AND SEPARATING SUBSTANTIALLY COPPER-FREE AMMONIACAL SOLUTION FROM THE UNDISSOLVED SOLIDS.
Claim 2
Independent Claim
172 words
THE METHOD OF SEPARATING COPPER VALUES FROM AN AMMONIACAL SOLUTION CONTAINING IN SOLUTION COPPER VALUES, AT LEAST ONE SULPHUR COMPOUND OF THE GROUP THIOSULPHATE, TRITHIONATE AND TETRATHIONATE, VALUES OF AT LEAST ONE OF THE METALS NICKEL AND COBALT AND FREE AMMONIA IN EXCESS OF ABOUT 60 GRAMS PER LITRE, WHICH COMPRISES THE STEPS OF ACTIVELY AGITATING THE SOLUTION AT A TEMPERATURE ABOVE ABOUT 190* F. FOR A PERIOD OF TIME SUFFICIENT TO CONVERT THE MAJOR PORTION OF THE DISSOLVED COPPER VALUES TO AND PRECIPITATE THEM AS COPPER SULPHIDES SUBSTANTIALLY FREE OF NICKEL OR COBALT VALUES, SEPARATING PRECIPITATED COPPER SULPHIDES FROM THE AMMONIACAL SOLUTION, ADDING TO THE SOLUTION A METAL SULPHIDE HAVING A HIGHER SOLUBILITY PRODUCT IN AMMONIACAL SOLUTION THAN THE SOLUBILITY PRODUCTS OF COPPER SULPHIDES AND AGITATING THE SOLUTION AT A TEMPERATURE ABOVE ABOUT 190* F. IN THE PRESENCE OF AN OXYGEN BEARING, OXIDIZING GAS, TO CONVERT SUBSTANTIALLY THE REMAINDER OF THE DISSOLVED COPPER VALUES TO AND PRECIPITATE THEM AS COPPER SULPHIDES, AND SEPARATING SUBSTANTIALLY COPPER-FREE AMMONIACAL SOLUTION FROM THE UNDISSOLVED SOLIDS.
References Cited (Backward Citations)
US2576314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |