US3233731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of separating coal
Assignee: Consolidation Coal Co
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Filing: 1960-12-27
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Granted: 1966-02-08
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Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 Charles R Nailler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:05
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/02; B01D21/04; B01D21/06; B01D21/24; B01D21/2427
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
247 words
A METHOD OF SEPARATING HIGH GRAVITY SOLIDS FROM A MIXTURE CONTAINING DIFFERENT GRAVITY SOLIDS, SAID SOLIDS HAVING A SPECTRUM OF SIZES AND A SUBSTANTIAL PORTION OF FINE HIGH GRAVITY SOLIDS, SAID METHOD COMPRISING INTRODUCING SAID SOLIDS IN THE FORM OF A SLURRY OF SOLIDS AND WATER INTO THE CENTRAL PORTION OF A TANK, SAID TANK HAVING A CENTRAL PORTION AND A PERIPHERAL PORTION, MAINTAINING SAID SLURRY UNDER SUBSTANTIALLY QUIESCENT CONDITIONS IN SAID TANK SO THAT CERTAIN OF SAID SOLIDS IN SAID SLURRY SETTLE TO THE BOTTOM OF SAID TANK, DETERMINING THE PERCENT BY WEIGHT CONCENTRATION OF SOLIDS IN SAID SLURRY AT PREDETERMINED RADIAL LOCATIONS FROM THE CENTER OF SAID TANK, DETERMINING THE RELATIVE PROPORTION OF HIGH GRAVITY PARTICULATE MATERIAL AT EACH PRESELECTED LOCATION, WITHDRAWING A DILUTE SLURRY HAVING A DECREASED SOLIDS CONCENTRATION RELATIVE TO SAID SLURRY INTRODUCED INTO SAID TANK FROM A ZONE ADJACENT THE UPPER LEVEL OF SAID SLURRY IN SAID TANK AND AT A SELECTED ONE OF SAID PREDETERMINED RADIAL LOCATIONS FROM THE CENTER OF SAID TANK SAID SOLIDS IN SAID DILUTE SLURRY HAVING AN INCREASED CONCENTRATION OF FINESIZE HIGH GRAVITY SOLIDS CONCENTRATION RELATIVE TO SAID INTO SAID TANK, AND WITHDRAWING A CONCENTRATED SLURRY FROM THE BOTTOM OF SAID TANK, SAID CONCENTRATED SLURRY HAVING AN INCREASED SOLIDS CONCENTRATION RELATIVE TO SAID SLURRY INTRODUCED INTO SAID TANK, SAID SOLIDS IN SAID CONCENTRATED SLURRY HAVING DECREASED CONCENTRATION OF HIGH GRAVITY SOLIDS AND AN INCREASED CONCENTRATION OF LARGER SIZED SOLIDS RELATIVE TO SAID SOLIDS INTRODUCED INTO SAID TANK.
Claim 2
Independent Claim
247 words
A METHOD OF SEPARATING HIGH GRAVITY SOLIDS FROM A MIXTURE CONTAINING DIFFERENT GRAVITY SOLIDS, SAID SOLIDS HAVING A SPECTRUM OF SIZES AND A SUBSTANTIAL PORTION OF FINE HIGH GRAVITY SOLIDS, SAID METHOD COMPRISING INTRODUCING SAID SOLIDS IN THE FORM OF A SLURRY OF SOLIDS AND WATER INTO THE CENTRAL PORTION OF A TANK, SAID TANK HAVING A CENTRAL PORTION AND A PERIPHERAL PORTION, MAINTAINING SAID SLURRY UNDER SUBSTANTIALLY QUIESCENT CONDITIONS IN SAID TANK SO THAT CERTAIN OF SAID SOLIDS IN SAID SLURRY SETTLE TO THE BOTTOM OF SAID TANK, DETERMINING THE PERCENT BY WEIGHT CONCENTRATION OF SOLIDS IN SAID SLURRY AT PREDETERMINED RADIAL LOCATIONS FROM THE CENTER OF SAID TANK, DETERMINING THE RELATIVE PROPORTION OF HIGH GRAVITY PARTICULATE MATERIAL AT EACH PRESELECTED LOCATION, WITHDRAWING A DILUTE SLURRY HAVING A DECREASED SOLIDS CONCENTRATION RELATIVE TO SAID SLURRY INTRODUCED INTO SAID TANK FROM A ZONE ADJACENT THE UPPER LEVEL OF SAID SLURRY IN SAID TANK AND AT A SELECTED ONE OF SAID PREDETERMINED RADIAL LOCATIONS FROM THE CENTER OF SAID TANK SAID SOLIDS IN SAID DILUTE SLURRY HAVING AN INCREASED CONCENTRATION OF FINESIZE HIGH GRAVITY SOLIDS CONCENTRATION RELATIVE TO SAID INTO SAID TANK, AND WITHDRAWING A CONCENTRATED SLURRY FROM THE BOTTOM OF SAID TANK, SAID CONCENTRATED SLURRY HAVING AN INCREASED SOLIDS CONCENTRATION RELATIVE TO SAID SLURRY INTRODUCED INTO SAID TANK, SAID SOLIDS IN SAID CONCENTRATED SLURRY HAVING DECREASED CONCENTRATION OF HIGH GRAVITY SOLIDS AND AN INCREASED CONCENTRATION OF LARGER SIZED SOLIDS RELATIVE TO SAID SOLIDS INTRODUCED INTO SAID TANK.
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |