US3799762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slag conditioner for iron and steel processes
Assignee: CARAD
•
Filing: 1971-05-17
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Granted: 1974-03-26
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Expires: 1991-05-17
Abstract
Abstract A SLAG CONDITIONER FOR USE IN IRON AND STEEL PROCESSES TO CONDITION THE SLAG AND FACILITATE THE DISSOLUTION OF LIME IN THE SLAGE COMPRISING ESSENTIALLY CONSTITUENTS OF CALCIUM FLUORIDE, AND MANGANESE AND IRON IN THE FORM OF AN OXIDE OR CARBONATE. FINES OF THE CONSTITUENTS ARE BRIQUETTED WITH A BINDER WHICH QUICKLY YIELDS ITS BINDING PROPERTIES UPON SUBJECTION TO HIGH TEMPERATURES AND AN ADDITION OF NO MORE THAN APPROXIMATELY TWENTY PERCENT BY WEIGHT OF AN OXIDE OF BORON, WHILE NOT NECESSARY, MAY BE MADE TO FURTHER ENHANCE THE CHARACTERISTICS THEREOF. THE MANGANESE IS PREFERABLY SUPPLIED FROM WASTE OR BY-PRODUCT DUST FROM THE MANUFACTURER OF FERROMANGANESE.
Inventors
- 👤 B Cass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:01
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/36; C21C7/00; C21C7/04; C21C7/064; C21C7/076; Y; Y02; Y02P; Y02P10/00; Y02P10/20
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References Cited (Backward Citations)
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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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |