US3323905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for adding agents for forming and/or treating the slag in iron baths
Assignee: Alpine Montan AG
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Filing: 1964-09-22
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Granted: 1967-06-06
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Expires: 1984-09-22
Abstract
No abstract record available.
Inventors
- 👤 Dobrowsky Ferdinand
- 👤 Rosner Kurt
- 👤 Kuhnelt Wolfgang
- 👤 Grohs Felix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:09
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4606; C21C5/30; C21C5/32; C21C5/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A METHOD FOR SUPPLYING SOLID MATERIAL IN GRANULAR OR DUST FORM FROM AT LEAST ONE CONTAINER INTO A CONVERTER FOR REFINING A METAL AND SLAG BATH CONTAINED THEREIN THROUGH A LANCE AND CONDUIT MEANS CONNECTING THE CONTAINER TO THE UPPER END OF THE LANCE, COMPRISING THE STEPS OF CREATING A SPIRAL STREAM OF A CONVEYOR GAS AT THE CONNECTION POINT OF THE CONDUIT MEANS TO THE CONTAINER, AND MAINTAINING SAID SPIRAL STREAM BY BLOWING ADDITIONAL CONVEYOR GAS STREAMS INTO THE CONDUIT MEANS AT SPACED POINTS THEREOF AND AT THE UPPER END OF THE LANCE, WITH THE DIRECTION OF SAID ADDITIONAL CONVEYOR GAS STREAMS HAVING A TANGENTIAL AND AN AXIAL COMPONENT IN THE CONVEYING DIRECTION THEREBY FEEDING THE SOLID MATERIAL THROUGH THE CONDUIT MEANS AND THE LANCE INTO THE CONVERTER AGAINST THE SURFACE OF SAID BATH.
Claim 2
Independent Claim
135 words
A METHOD FOR SUPPLYING SOLID MATERIAL IN GRANULAR OR DUST FORM FROM AT LEAST ONE CONTAINER INTO A CONVERTER FOR REFINING A METAL AND SLAG BATH CONTAINED THEREIN THROUGH A LANCE AND CONDUIT MEANS CONNECTING THE CONTAINER TO THE UPPER END OF THE LANCE, COMPRISING THE STEPS OF CREATING A SPIRAL STREAM OF A CONVEYOR GAS AT THE CONNECTION POINT OF THE CONDUIT MEANS TO THE CONTAINER, AND MAINTAINING SAID SPIRAL STREAM BY BLOWING ADDITIONAL CONVEYOR GAS STREAMS INTO THE CONDUIT MEANS AT SPACED POINTS THEREOF AND AT THE UPPER END OF THE LANCE, WITH THE DIRECTION OF SAID ADDITIONAL CONVEYOR GAS STREAMS HAVING A TANGENTIAL AND AN AXIAL COMPONENT IN THE CONVEYING DIRECTION THEREBY FEEDING THE SOLID MATERIAL THROUGH THE CONDUIT MEANS AND THE LANCE INTO THE CONVERTER AGAINST THE SURFACE OF SAID BATH.
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) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |