US2997171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for beneficiating potash materials
Assignee: International Minerals and Chemical Corp
•
Filing: 1958-06-02
•
Granted: 1961-08-22
•
Expires: 1978-06-02
Abstract
No abstract record available.
Inventors
- 👤 Gene L Samsel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:56
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/002; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A METHOD OF BENEFICIATING A SLIME BEARING POTASHCONTAINING MATERIAL WHICH COMPRISES HEATING POTASH-CONTAINING PARTICLES WHILE IN A STATE OF SUBDIVISION SUFFICIENT TO SUBSTANTIALLY COMPLETELY LIBRATE THE DESIRED COMPONENTS FROM THE GANGUE, TREATING THE PARTICLES WITH FINELY DIVIDED SOLID MATERIAL EXTRANEOUS TO THE PRINCIPAL COMPONENTS OF THE POTASH-CONTAINING MATERIAL AND HAVING A WORK FUNCTION DIFFERENT FROM THE MINERAL COMPONENT BEING CONCENTRATED AND AN AVERAGE PARTICLE SIZE SMALLER THAN THE AVERAGE SIZE OF THE POTASH-CONTAINING MATERIAL, INDUCING THE TREATED PARTICLES TO ACCEPT DIFFERENTIAL ELECTRICAL CHARGES SUBJECTING THE CHARGED PARTICLES TO AN ELECTROSTATIC FIELD, AND RECOVERING A CONCENTRATE.
Claim 2
Independent Claim
95 words
A METHOD OF BENEFICIATING A SLIME BEARING POTASHCONTAINING MATERIAL WHICH COMPRISES HEATING POTASH-CONTAINING PARTICLES WHILE IN A STATE OF SUBDIVISION SUFFICIENT TO SUBSTANTIALLY COMPLETELY LIBRATE THE DESIRED COMPONENTS FROM THE GANGUE, TREATING THE PARTICLES WITH FINELY DIVIDED SOLID MATERIAL EXTRANEOUS TO THE PRINCIPAL COMPONENTS OF THE POTASH-CONTAINING MATERIAL AND HAVING A WORK FUNCTION DIFFERENT FROM THE MINERAL COMPONENT BEING CONCENTRATED AND AN AVERAGE PARTICLE SIZE SMALLER THAN THE AVERAGE SIZE OF THE POTASH-CONTAINING MATERIAL, INDUCING THE TREATED PARTICLES TO ACCEPT DIFFERENTIAL ELECTRICAL CHARGES SUBJECTING THE CHARGED PARTICLES TO AN ELECTROSTATIC FIELD, AND RECOVERING A CONCENTRATE.
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) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |