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Patent US3855384A successfully refreshed from Google Patents.
US3855384A
Expired / Lapsed
US
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Process for winning copper using carbon monoxide
Assignee: Ethyl Corp
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Filing: 1972-06-28
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Granted: 1974-12-17
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Expires: 1992-06-28
Abstract
Abstract Process of winning copper from chloride containing solutions by treating with carbon monoxide. Process makes copper separable from iron, and can be applied to leach solutions prepared by treating sulfide ores with HCl in the presence of air or oxygen.
Inventors
- 👤 M Dubeck
- 👤 S Im
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:47
CPC Classifications
C; C22; C22B; C22B15/00; C22B15/0002; C22B15/001; C22B15/0021; C22B15/0004; C22B15/0006; C22B15/0063; C22B15/0065; C22B15/0067; C22B15/0069; C22B15/0084; C22B15/0089; C22B15/0093; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
19 words
A PROCESS FOR RECOVERING COPPER VALUES FROM AN ACIDIC SOLUTION CONTAINING COPPER IONS, IRON AND CHLORIDE IONS WHCIH COMPRISES
Claim 2
Dependent Claim
19 words
A PROCESS FOR RECOVERING COPPER VALUES FROM AN ACIDIC SOLUTION CONTAINING COPPER IONS, IRON AND CHLORIDE IONS WHCIH COMPRISES
Claim 3
Dependent Claim
44 words
TREATING SAID SOLUTION WITH A CARBON MONOXIDE CONTAINING GAS AT ELEVATED TEMPERATURES OF FROM ABOUT 80* TO ABOUT 300*C, AND PRESSURES OF FROM ABOUT 10 PSIG TO ABOUT 5,000 PSIG FOR A TIME SUFFICIENT TO FORM A COPPER CONTAINING COMPLEX AS A PRECIPITATE, AND
Claim 4
Dependent Claim
44 words
TREATING SAID SOLUTION WITH A CARBON MONOXIDE CONTAINING GAS AT ELEVATED TEMPERATURES OF FROM ABOUT 80* TO ABOUT 300*C, AND PRESSURES OF FROM ABOUT 10 PSIG TO ABOUT 5,000 PSIG FOR A TIME SUFFICIENT TO FORM A COPPER CONTAINING COMPLEX AS A PRECIPITATE, AND
Claim 5
Dependent Claim
16 words
SEPARATING SAID PRECIPITATED COMPLEX FROM SAID SOLUTION, WHEREBY COPPER VALUES SUBSTANTIALLY FREE FROM IRON ARE OBTAINED.
Claim 6
Dependent Claim
16 words
SEPARATING SAID PRECIPITATED COMPLEX FROM SAID SOLUTION, WHEREBY COPPER VALUES SUBSTANTIALLY FREE FROM IRON ARE OBTAINED.
Claim 7
Dependent Claim
16 words
separating said precipitated complex from said solution, whereby copper values substantially free from iron are obtained.
Claim 8
Dependent Claim
16 words
separating said precipitated complex from said solution, whereby copper values substantially free from iron are obtained.
Claim 9
Dependent Claim
12 words
A process of claim 1 wherein said solutIon is an aqueous solution.
Claim 10
Dependent Claim
27 words
A process of claim 2 wherein there is at least one gram ion of chloride ion available for bonding with each gram atom of said copper ions.
Claim 11
Dependent Claim
15 words
A process of claim 3 wherein said copper ions are in the cuprous valence state.
Claim 12
Dependent Claim
17 words
A process of claim 3 being conducted at a temperature of from about 100* to about 250*C.
Claim 13
Dependent Claim
19 words
A process of claim 5 being conducted under carbon monoxide pressure of from about 100 to about 1,500 psia.
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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |