US3037624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beneficiating potash ores
Assignee: National Potash Co
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Filing: 1958-08-20
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Granted: 1962-06-05
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Expires: 1978-08-20
Abstract
No abstract record available.
Inventors
- 👤 Frank L Jackson
- 👤 Bernard M Fisher
- 👤 Gilbert L Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:35
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/10; Y; Y10; Y10S; Y10S209/00; Y10S209/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A METHOD OF BENEFICIATING AS-MINED HIGH-CLAY SYLVINITE ORE CONTAINING AT LEAST ABOUT 3% OF BOUND BUT WATER DISPERSIBLE CLAY, COMPRISING SEPARATING THE MINED ORE INTO (1) A MAJOR FRACTION OF RELATIVELY LARGE PARTICLES WHICH UPON SUBSEQUENT DRY GRINDING DO NOT TEND TO BLIND A 10 MESH SCREEN AND (2) A MINOR FRACTION OF RELATIVELY SMALLER PARTICLES OF A SIZE AND MOISTURE CONTENT WHICH NORMALLY TEND TO BLIND A 10 MESH SCREEN, DRYING ONLY SAID MINOR FRACTION OF RELATIVELY SMALLER PARTICLES, SUBJECTING SAID MAJOR FRACTION OF RELATIVELY LARGE PARTICLES TO DRY GRINDING, COMBINING THE RESULTING DRIED MIONOR FRACTION AND THE RESULTING DRY-GROUND MAJOR FRACTION SAND SUBJECTING THE RESULTING COMBINED DRY-GROUND MAJOR AND THE RESULTING DRIED MINOR FRACTIONS TO A SCREENING TREATMENT ON AN ABOUT 10 MESH SCREEN, FEEDING THE PARTICLES OF ORE WHICH PASS THROUGH SAID 10 MESH SCREEN AND AN AQUEOUS BRINE SOLUTION SATURATED WITH RESPECT TO POTASSIUM CHLORIDE AND SODIUM CHLORIDE INTO A SCRUBBING ZONE TO FORM A FLUID
Claim 2
Independent Claim
160 words
A METHOD OF BENEFICIATING AS-MINED HIGH-CLAY SYLVINITE ORE CONTAINING AT LEAST ABOUT 3% OF BOUND BUT WATER DISPERSIBLE CLAY, COMPRISING SEPARATING THE MINED ORE INTO (1) A MAJOR FRACTION OF RELATIVELY LARGE PARTICLES WHICH UPON SUBSEQUENT DRY GRINDING DO NOT TEND TO BLIND A 10 MESH SCREEN AND (2) A MINOR FRACTION OF RELATIVELY SMALLER PARTICLES OF A SIZE AND MOISTURE CONTENT WHICH NORMALLY TEND TO BLIND A 10 MESH SCREEN, DRYING ONLY SAID MINOR FRACTION OF RELATIVELY SMALLER PARTICLES, SUBJECTING SAID MAJOR FRACTION OF RELATIVELY LARGE PARTICLES TO DRY GRINDING, COMBINING THE RESULTING DRIED MIONOR FRACTION AND THE RESULTING DRY-GROUND MAJOR FRACTION SAND SUBJECTING THE RESULTING COMBINED DRY-GROUND MAJOR AND THE RESULTING DRIED MINOR FRACTIONS TO A SCREENING TREATMENT ON AN ABOUT 10 MESH SCREEN, FEEDING THE PARTICLES OF ORE WHICH PASS THROUGH SAID 10 MESH SCREEN AND AN AQUEOUS BRINE SOLUTION SATURATED WITH RESPECT TO POTASSIUM CHLORIDE AND SODIUM CHLORIDE INTO A SCRUBBING ZONE TO FORM A FLUID
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) | 1965-06-04 | 1965-12-04 | 1966-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-04 | 1969-12-04 | 1970-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-04 | 1973-12-04 | 1974-06-05 | $7700.00 | Window Closed / Lapsed |