US2927010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the beneficiation of sylvite ores
Assignee: International Minerals and Chemical Corp
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Filing: 1957-12-30
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Granted: 1960-03-01
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Expires: 1977-12-30
Abstract
No abstract record available.
Inventors
- 👤 Baron Ira M Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:08
CPC Classifications
C; C01; C01D; C01D3/00; C01D3/04; C01D3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A METHOD OF RECOVERING SYLVITE FROM SYLVITE-CONTAINING SLIME-CONTAMINATED ORES WHICH COMPRISES COMMINUTING THE ORE TO LIBERATE THE SYLVITE FROM THE GANGUE COMPONENTS OF THE ORE, HEATING THE COMMINUTED ORE TO A TEMPERATURE OF AT LEAST ABOUT 150*F. AND BELOW THE FUSION POINT OF THE ORE, DIFFERENTIALLY CHARGING THE HEATED ORE, PASSING DIFFERENTLY CHARGED ORE THROUGH AN ELECTROSTATIC FIELD AT A TEMPERATURE NOT GREATER THAN ABOUT 425*F. TO PRODUCE A SLIME-CONTAINING SYLVITE CONCENTRATE, MIXING THE SLIME-CONTAINING CONCENTRATE WITH AQUEOUS MEDIA SELECTIVELY TO DISSOLVE THE SYLVITE AND SEPARATING THE INSOLUBLE MATERIAL INCLUDING THE SLIMES FROM THE SOLUTION AND PRECIPITAING SUBSTANTIALLY SLIME-FREE SYLVITE FROM THE SOLUTION.
Claim 2
Independent Claim
103 words
A METHOD OF RECOVERING SYLVITE FROM SYLVITE-CONTAINING SLIME-CONTAMINATED ORES WHICH COMPRISES COMMINUTING THE ORE TO LIBERATE THE SYLVITE FROM THE GANGUE COMPONENTS OF THE ORE, HEATING THE COMMINUTED ORE TO A TEMPERATURE OF AT LEAST ABOUT 150*F. AND BELOW THE FUSION POINT OF THE ORE, DIFFERENTIALLY CHARGING THE HEATED ORE, PASSING DIFFERENTLY CHARGED ORE THROUGH AN ELECTROSTATIC FIELD AT A TEMPERATURE NOT GREATER THAN ABOUT 425*F. TO PRODUCE A SLIME-CONTAINING SYLVITE CONCENTRATE, MIXING THE SLIME-CONTAINING CONCENTRATE WITH AQUEOUS MEDIA SELECTIVELY TO DISSOLVE THE SYLVITE AND SEPARATING THE INSOLUBLE MATERIAL INCLUDING THE SLIMES FROM THE SOLUTION AND PRECIPITAING SUBSTANTIALLY SLIME-FREE SYLVITE FROM THE SOLUTION.
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) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |