Patent US3819048A successfully refreshed from Google Patents.
US3819048A
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Oxide copper ore flotation using condensation reaction product as flotation reagent
Assignee: ConocoPhillips Co
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Filing: 1972-09-01
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Granted: 1974-06-25
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Expires: 1992-09-01
Abstract
Abstract WHEREIN R is an alkyl group having 8 to 12 carbon atoms and R'' is H or a (CH2CH2O)xH radical where x is an integer of 1 to 3, B. an alkylene polyamine of the formula In a flotation separation process wherein oxide copper ores in subdivided form are concentrated by slurrying raw ores containing oxide copper ores in an aqueous solution of a flotation reagent followed by generating gas bubbles in the slurry to float the oxide copper ores and recovering the concentrated oxide copper ores from the surface of the slurry, the improvement therein which comprises employing as the flotation reagent a condensation reaction product derived from A. a substituted phenol of the formula
Inventors
- 👤 D Weimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:56
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/01; B03D2203/00; B03D2203/02; B03D2203/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
10 words
A process according to claim 1 wherein R'' is hydrogen.
Claim 2
Dependent Claim
20 words
A process according to claim 1 wherein the substituted phenol is nonyl phenol and the alkylene polyamine is tetraethylene pentamine.
Claim 3
Dependent Claim
28 words
A process according to claim 1 wherein the flotation reagent is employed in amounts in the range of about 0.01 to about 5 pounds per ton of ore.
Claim 4
Dependent Claim
20 words
A process according to claim 1 wherein the substituted phenol is nonyl phenol and the alkylene polyamine is diethylene triamine.
Claim 5
Dependent Claim
13 words
A process according to claim 1 wherein the oxide copper ore is chrysocolla.
References Cited (Backward Citations)
US1281018A
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US1590196A
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US2180926A
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US3025313A
Cited
US3056498A
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US3438494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |