US3863002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Static leaching process
Assignee: C0NSOLIDATION COAL Co
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Filing: 1971-11-15
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Granted: 1975-01-28
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Expires: 1991-11-15
Abstract
Abstract The present invention relates to a method for leaching a mineral from an ore containing said mineral wherein a lixiviant is introduced under pressure into a vessel containing a bed of ore which has been dried while in an agitated state. A sweep fluid is then introduced into said vessel to sweep the lixiviant containing the dissolved mineral values out of said ore bed.
Inventors
- 👤 Gerald F Pace
- 👤 Earl W Shortridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:37
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0221; B; B01; B01D; B01D11/00; B01D11/02; B01D11/0288; C22B3/00; C22B3/04; C22B60/0226; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
133 words
A static leaching process of claim 1 for recovering uranium mineral values from permeable bed of ore containing said mineral values said process comprising drying said ore in an agitated state to increase permeability of said ore bed, placing said dried ore into a leaching vessel, adding a lixiviant solution comprising 1-20 weight percent mineral acid to said ore bed to leach said mineral values from said ore under pressure sufficient to cause flow of said solution through said bed of ore, percolating said lixiviant solution through said ore to leach said mineral values from said ore, adding a sweep fluid to said ore to sweep said lixiviant containing dissolved mineral values through said bed of ore, and recovering an effluent lixiviant solution from said bed of ore containing said uranium mineral values.
Claim 2
Dependent Claim
158 words
A static leaching process of claim 1 for recovering uranium mineral values from a permeable bed of ore containing said mineral values said process comprising drying said ore in an agitated state in a gas fired rotary drier to increase permeability of said ore bed, placing said dried ore into a leaching vessel, adding a lixiviant solution comprising 5-10 percent sulfuric acid to said ore bed to leach said uranium mineral values from said ore under pressure sufficient to cause flow of said solution through said bed of ore, percolating said lixiviant solution through said ore to leach said mineral values from said ore, adding an aqueous sweep fluid selected from water and an aqueous potassium sulfate solution containing less than 10 weight percent potassium sulfate to said ore to sweep said lixiviant containing dissolved mineral values through said bed of ore, and recovering an effluent lixiviant solution from said bed of ore containing said uranium mineral values.
Claim 3
Dependent Claim
141 words
A static leaching process of claim 1 for recovering uranium mineral values from a permeable bed of ore containing said mineral values said process comprising drying said ore in an agitated state in a gas fired rotary drier to increase permeability of said ore bed, placing said dried ore into a leaching vessel, adding a lixiviant solution comprising 5-10 percent sulfuric acid to said ore bed to leach said uranium mineral values from said ore under pressure sufficient to cause flow of said solution through said bed of ore, percolating said lixiviant solution through said ore to leach said mineral values from said ore, adding an aqueous sweep fluid to said ore to sweep said lixiviant containing dissolved mineral values through said bed of ore, and recovering an effluent lixiviant solution from said bed of ore containing said uranium mineral values.
Claim 4
Dependent Claim
26 words
A process of claim 1 wherein the lixiviant is a solvent containing a mineral acid and said effluent lixiviant contains a high fraction of said acid.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |