Patent US3554516A successfully refreshed from Google Patents.
US3554516A
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Apparatus for precipitating metal from a solution
Assignee: Kennecott Corp
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Filing: 1969-02-04
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Granted: 1971-01-12
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Expires: 1989-02-04
Abstract
Abstract Apparatus for precipitating particles of a desired metal from a pregnant solution thereof, comprising: an upright vessel adapted to contain a precipitant metal for stripping the desired metal values from a pregnant solution in the form of a particulate precipitate, means for forcefully supplying pregnant solution to the interior of said vessel for reactive contact with the precipitant metal, and means for injecting a different fluid forcefully into said vessel at a plurality of spaced locations therein, for engagement against said precipitant metal, to enhance the contact between said solution and the precipitant metal.
Inventors
- 👤 Jere Robert Denny
- 👤 Deenahalli S Krishnaswamy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:57
CPC Classifications
C; C22; C22B; C22B3/00; C22B3/02; C22B15/00; C22B15/0063; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
25 words
Apparatus in accordance with claim 1 wherein said injection means comprises means for injecting a gas at a plurality of separate locations within said vessel.
Claim 2
Dependent Claim
19 words
Apparatus in accordance with claim 2 wherein said vessel is formed with a horizontal cross section that increases upwardly.
Claim 3
Dependent Claim
14 words
Apparatus in accordance with claim 3 wherein said vessel is generally conical in shape.
Claim 4
Dependent Claim
45 words
Apparatus in accordance with claim 4 wherein said means for injecting the gas into the vessel comprises a plurality of supply pipes that are disposed within said vessel and that are equipped with spaced jets to direct the gas toward the interior of the vessel.
Claim 5
Dependent Claim
127 words
Apparatus in accordance with claim 1 including: a second, outer vessel that is disposed about said first vessel and that has an upper section that extends above, and a lower section that extends below, the upper rim of said inner vessel; said outer vessel having a large diameter relative to said first vessel, thereby providing a confined, relatively quiescent zone above said inner vessel, and also providing a gap intermediate the upper rim of said inner vessel and the internal surface of said outer vessel; said outer vessel being provided within its upper section with an overflow collection means for stripped solution; and foraminous means disposed across said gap to restrain entry of the precipitant metal into the gap while permitting entry of the particulate precipitate therein.
Claim 6
Dependent Claim
26 words
Apparatus in accordance with claim 6 wherein said injection means comprises means for injecting a gas at a plurality of spaced locations within said inner vessel.
Claim 7
Dependent Claim
61 words
Apparatus iN accordance with claim 7 wherein said inner vessel is generally conical in shape, and is disposed so that its horizontal section increases upwardly, and wherein said gas injection means comprises a plurality of supply pipes that are disposed within said inner vessel and that are equipped with spaced jets to direct the gas toward the interior of the vessel.
Claim 8
Dependent Claim
27 words
Apparatus in accordance with claim 7 including means disposed beneath said foraminous means for injecting gas to flow through said foraminous means into said relatively quiescent zone.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |