Patent US3984236A successfully refreshed from Google Patents.
US3984236A
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Flux powder for use during continuous casting of steel
Assignee: Holcim Ltd
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Filing: 1975-01-20
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Granted: 1976-10-05
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Expires: 1995-01-20
Abstract
Abstract A flux powder for use during the continuous casting of steel, containing Portland cement, a fluxing agent and a carbon carrier. The carbon carrier possesses a grain size of less than 1 μ, the powder having an aluminum oxide content in the range between 2 - 12 percent by weight, and a lime-silica ratio adjusted between 0.7 and 1.0 through the addition of quartz powder. The carbon carrier is carbon black containing carbon in an amount of 2 - 8 percent by weight, and wherein the carbon black is present as powder carbon black. The powder carbon black can be in the form of lamp black.
Inventors
- 👤 Peter J. Koenig
- 👤 Friedrich Hofmanner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:30
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/10; B22D11/11; B22D11/111
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
97 words
A flux powder for use in the continuous casting of steel, comprising Portland cement, a fluxing agent, aluminum oxide, lime-silica and a carbon carrier, the aluminum oxide possessing a content in the range of between 2 to 12 percent by weight, and the ratio of lime-silica being adjusted between 0.7 and 1.0 through the addition of quartz powder, the carbon being present in the form of carbon black in a quantity of 2 - 8 percent by weight, the improvement comprising: the carbon black is powder carbon black possessing a grain size of less than 1 μ.
Claim 2
Dependent Claim
97 words
A flux powder for use in the continuous casting of steel, comprising Portland cement, a fluxing agent, aluminum oxide, lime-silica and a carbon carrier, the aluminum oxide possessing a content in the range of between 2 to 12 percent by weight, and the ratio of lime-silica being adjusted between 0.7 and 1.0 through the addition of quartz powder, the carbon being present in the form of carbon black in a quantity of 2 - 8 percent by weight, the improvement comprising: the carbon black is powder carbon black possessing a grain size of less than 1 μ.
Claim 3
Dependent Claim
21 words
The flux powder as defined in claim 1, wherein the powder carbon black is present in the form of lamp black.
References Cited (Backward Citations)
US3156557A
Cited
US3446614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-05 | 1980-04-05 | 1980-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-05 | 1984-04-05 | 1984-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-05 | 1988-04-05 | 1988-10-05 | $7700.00 | Window Closed / Lapsed |