US3352499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding circuit control
Assignee: Industrial Nucleonics Corp
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Filing: 1964-12-04
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Granted: 1967-11-14
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Expires: 1984-12-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Ross L Cambell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:12
CPC Classifications
B; B02; B02C; B02C25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
THE METHOD OF CONTROLLING THE SOLIDS CONCENTRATION AND THROUGHPUT OF A SLURRY PRODUCED BY A CLOSED CIRCUIT WET-GRINDING MILL WHEREIN NEW SOLIDS OF VARYING GRINDABILITY AND A LIQUID ARE ADDED AT INDIVIDUALLY CONTROLLABLE RATES TO THE INPUT OF SAID MILL TO FORM SAID SLURRY AND UNDERFLOW RETURNING FROM A CLASSIFIER IS ADDED TO SAID INPUT, SAID METHOD COMPRISING THE STEPS OF MEASURING THE DENSITY OF SAID SLURRY AT THE OUTPUT OF SAID MILL, VARYING THE RATE AT WHICH SAID LIQUID IS ADDED IN ACCORDANCE WITH SAID DENSITY MEASUREMENTS, MEASURING THE MASS PER UNIT TIME OF SAID CLASSIFIER UNDERFLOW, AND VARYING THE RATE AT WHICH SAID NEW SOLIDS ARE ADDED IN ACCORDANCE WITH SAID MASS PER UNIT TIME MEASUREMENT.
Claim 2
Independent Claim
118 words
THE METHOD OF CONTROLLING THE SOLIDS CONCENTRATION AND THROUGHPUT OF A SLURRY PRODUCED BY A CLOSED CIRCUIT WET-GRINDING MILL WHEREIN NEW SOLIDS OF VARYING GRINDABILITY AND A LIQUID ARE ADDED AT INDIVIDUALLY CONTROLLABLE RATES TO THE INPUT OF SAID MILL TO FORM SAID SLURRY AND UNDERFLOW RETURNING FROM A CLASSIFIER IS ADDED TO SAID INPUT, SAID METHOD COMPRISING THE STEPS OF MEASURING THE DENSITY OF SAID SLURRY AT THE OUTPUT OF SAID MILL, VARYING THE RATE AT WHICH SAID LIQUID IS ADDED IN ACCORDANCE WITH SAID DENSITY MEASUREMENTS, MEASURING THE MASS PER UNIT TIME OF SAID CLASSIFIER UNDERFLOW, AND VARYING THE RATE AT WHICH SAID NEW SOLIDS ARE ADDED IN ACCORDANCE WITH SAID MASS PER UNIT TIME MEASUREMENT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |