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US3231204A
Expired / Lapsed
US
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Beneficiation means and methods for autogenous grinding systems
Assignee: Beazer East Inc
•
Filing: 1962-10-05
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Granted: 1966-01-25
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Expires: 1982-10-05
Abstract
No abstract record available.
Inventors
- 👤 Le Roy C Ferguson
- 👤 Hardinge Harlowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:47
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/18; B02C17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A METHOD OF BENEFICIATING RUN-OF-MINE FRIABLE MINERAL MATERIAL COMPRISING THE STEPS OF SUBJECTING SUCH MATERIAL INCLUDING RELATIVELY COARSE, MEDIUM AND FINE SIZE RANGES THEREOF TO AUTOGENOUS GRINDING WITHIN A MILL TO REDUCE ALL SIZE RANGES THERE OF, REMOVING A PORTION OF SELECTED SIZE RANGES OF SAID MATERIAL LARGER THAN SAID FINE SIZE RANGES FROM THE MASS OF THE MATERIAL BEING REDUCED, SUBJECTING SAID REMOVED MATERIAL TO TREATMENT WHILE NOT CO-MINGLED WITH SAID MASS COMPRISING THE STEPS OF CLASSIFYING THE SAME BY SCREENING INTO AT LEAST TWO GENERAL SIZE RANGES AND BENEFICIATING THE COARSEST SIZE RANGE BY SUBJECTING THE SAME TO MAGNETIC SEPARATION TO EFFECT A SEPARATION OF MATERIAL VALUES THEREIN FROM WASTE MATERIAL, AND RETURNING TO THE MASS OF MATERIAL BEING REDUCED ANY PART OF SAID SEPARATED MATERIAL REQUIRING FURTHER REDUCTION.
Claim 2
Independent Claim
131 words
A METHOD OF BENEFICIATING RUN-OF-MINE FRIABLE MINERAL MATERIAL COMPRISING THE STEPS OF SUBJECTING SUCH MATERIAL INCLUDING RELATIVELY COARSE, MEDIUM AND FINE SIZE RANGES THEREOF TO AUTOGENOUS GRINDING WITHIN A MILL TO REDUCE ALL SIZE RANGES THERE OF, REMOVING A PORTION OF SELECTED SIZE RANGES OF SAID MATERIAL LARGER THAN SAID FINE SIZE RANGES FROM THE MASS OF THE MATERIAL BEING REDUCED, SUBJECTING SAID REMOVED MATERIAL TO TREATMENT WHILE NOT CO-MINGLED WITH SAID MASS COMPRISING THE STEPS OF CLASSIFYING THE SAME BY SCREENING INTO AT LEAST TWO GENERAL SIZE RANGES AND BENEFICIATING THE COARSEST SIZE RANGE BY SUBJECTING THE SAME TO MAGNETIC SEPARATION TO EFFECT A SEPARATION OF MATERIAL VALUES THEREIN FROM WASTE MATERIAL, AND RETURNING TO THE MASS OF MATERIAL BEING REDUCED ANY PART OF SAID SEPARATED MATERIAL REQUIRING FURTHER REDUCTION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |