Patent US2546936A successfully refreshed from Google Patents.
US2546936A
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Treatment of slags
Assignee: OHIO FERRO ALLOYS CORPORATED
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Filing: 1949-06-02
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Granted: 1951-03-27
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Expires: 1969-06-02
Abstract
No abstract record available.
Inventors
- 👤 James C Vignos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:19
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/04; C21C7/064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A PROCESS FOR REMOVING PHOSPHORUS FROM SLAGS CONTAINING PHOSPHORUS, MANGANESE AND IRON OXIDES OUTSIDE OF A FURNACE TO PRODUCE A SUBSTANTIALLY PHOSPHORUS-FREE MANGANESE OXIDE CONTAINING MATERIAL FROM WHICH MANGANESE MAY BE RECOVERED BY KNOWN MEANS WHICH COMPRISES TREATING THE SLAG IN THE MOLTEN CONDITION WITH A SUFFICIENT AMOUNT OF A MIXTURE OF ABOUT 5% TO 40% CARBONACEOUS REDUCING AGENTS AND ABOUT 95% TO 60% NONCARBONACEOUS REDUCING AGENTS TO REDUCE THE GREATER PART OF THE PHOSPHORUS OXIDE AND SUFFICIENT IRON OXIDE TO COMBINE WITH THE PHOSPHORUS IN THE FORM OF AN IRON-PHOSPHORUS ALLOY AND SEPARATING THE IRON-PHOSPHORUS ALLOY FROM THE RRMAINING MANGANESE OXIDE CONTAINING MATERIAL.
Claim 2
Dependent Claim
104 words
A PROCESS FOR REMOVING PHOSPHORUS FROM SLAGS CONTAINING PHOSPHORUS, MANGANESE AND IRON OXIDES OUTSIDE OF A FURNACE TO PRODUCE A SUBSTANTIALLY PHOSPHORUS-FREE MANGANESE OXIDE CONTAINING MATERIAL FROM WHICH MANGANESE MAY BE RECOVERED BY KNOWN MEANS WHICH COMPRISES TREATING THE SLAG IN THE MOLTEN CONDITION WITH A SUFFICIENT AMOUNT OF A MIXTURE OF ABOUT 5% TO 40% CARBONACEOUS REDUCING AGENTS AND ABOUT 95% TO 60% NONCARBONACEOUS REDUCING AGENTS TO REDUCE THE GREATER PART OF THE PHOSPHORUS OXIDE AND SUFFICIENT IRON OXIDE TO COMBINE WITH THE PHOSPHORUS IN THE FORM OF AN IRON-PHOSPHORUS ALLOY AND SEPARATING THE IRON-PHOSPHORUS ALLOY FROM THE RRMAINING MANGANESE OXIDE CONTAINING MATERIAL.
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) | 1954-03-26 | 1954-09-25 | 1955-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-26 | 1958-09-25 | 1959-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-26 | 1962-09-25 | 1963-03-27 | $7700.00 | Window Closed / Lapsed |