Patent US2514958A successfully refreshed from Google Patents.
US2514958A
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Concentration of oolitic iron ores
Assignee: Republic Steel Corp
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Filing: 1947-12-26
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Granted: 1950-07-11
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Expires: 1967-12-26
Abstract
No abstract record available.
Inventors
- 👤 Lee Oscar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:28
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/02; B03D1/08; B03D1/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
THE METHOD OF CONCENTRATING IRON VALUES CONTAINED IN OOLITIC IRON ORE WHICH INCLUDES THE STEPS OF SUBJECTING THE AQUEOUS PULP OF OOLITIC IRON ORE PARTICLES TO SETTING IN A RESTRICTED ZONE AND INDUCING A COUTERFLOW OF WATER TO PRODUCE A SETTLED GRANULAR PRODUCT CONTAINING PRIMARILY THE PARTICLES LARGER THAN 100-MESH AND A SLIME PRODUCT CONTAINING ONLY PARTICLES UNDER 100-MESH, PASSING SAID GRANULAR MATERIAL OVER A CONCENTRATING TABLE AND THEREBY SEPARATING SAID GRANULAR MATERIAL INTO CONCENTRATES CONTAINING IRON VALUES, MIDDLINGS CONTAINING IRON VALUES LOCKED IN NONMETALLIC MATERIAL AND SOME FREE FINE IRON VALUES, AND TAILINGS CONSISTING OF NON-METALLIC MATERIAL, SEPARATING A CONCENTRATE OF THE FINE IRON VALUES FROM SAID MIDDLINGS BY A MULTIPLE CELL HINDERED SETTLING CLASSIFICATION, DEWATERING THE TABLE AND FREE IRON VALUES CONCENTRATES AND RECOVERING THE SLIME THEREFROM, DEWATERING AND THEREBY SEPARATING SLIMES FROM SAID MIDDLINGS, DEWATERING AND THEREBY SEPARATING SLIMS FROM SAID TAILINGS, COMBINING THE SEVERAL SLIMES AND RECOVERING THE IRON VALUES THEREIN, AND COLLECTING SAID CONCENTRATES.
Claim 2
Independent Claim
159 words
THE METHOD OF CONCENTRATING IRON VALUES CONTAINED IN OOLITIC IRON ORE WHICH INCLUDES THE STEPS OF SUBJECTING THE AQUEOUS PULP OF OOLITIC IRON ORE PARTICLES TO SETTING IN A RESTRICTED ZONE AND INDUCING A COUTERFLOW OF WATER TO PRODUCE A SETTLED GRANULAR PRODUCT CONTAINING PRIMARILY THE PARTICLES LARGER THAN 100-MESH AND A SLIME PRODUCT CONTAINING ONLY PARTICLES UNDER 100-MESH, PASSING SAID GRANULAR MATERIAL OVER A CONCENTRATING TABLE AND THEREBY SEPARATING SAID GRANULAR MATERIAL INTO CONCENTRATES CONTAINING IRON VALUES, MIDDLINGS CONTAINING IRON VALUES LOCKED IN NONMETALLIC MATERIAL AND SOME FREE FINE IRON VALUES, AND TAILINGS CONSISTING OF NON-METALLIC MATERIAL, SEPARATING A CONCENTRATE OF THE FINE IRON VALUES FROM SAID MIDDLINGS BY A MULTIPLE CELL HINDERED SETTLING CLASSIFICATION, DEWATERING THE TABLE AND FREE IRON VALUES CONCENTRATES AND RECOVERING THE SLIME THEREFROM, DEWATERING AND THEREBY SEPARATING SLIMES FROM SAID MIDDLINGS, DEWATERING AND THEREBY SEPARATING SLIMS FROM SAID TAILINGS, COMBINING THE SEVERAL SLIMES AND RECOVERING THE IRON VALUES THEREIN, AND COLLECTING SAID CONCENTRATES.
References Cited (Backward Citations)
US1939119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-10 | 1954-01-09 | 1954-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-10 | 1958-01-09 | 1958-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-10 | 1962-01-09 | 1962-07-11 | $7700.00 | Window Closed / Lapsed |