US3801083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear-resistant spouts for metallurgical vessels
Assignee: Eisenwerke Gesellschaf Maximilianshuette mbH
•
Filing: 1972-12-29
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Granted: 1974-04-02
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Expires: 1992-12-29
Abstract
Abstract A wear-resistant spout for metallurgical vessles in which a pore-free material which exhibits high resistance to erosion by the molten contents of the vessel is utilized to line the passageway in said spout, a particularly preferred material is melt-cast corundum.
Inventors
- 👤 P Mantey
- 👤 E Knorr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:59
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/14; B22D41/22; B22D41/28
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
44 words
A wear-resistant spout for metallurgical vessles, particularly a tundish nozzle and slider drain, consisting of a vessel provided with an orifice and a highly wear-resistant insert in said orifice exposed to the melt, wherein the insert consists of a practically poreless oxide-ceramic refractory material.
Claim 2
Dependent Claim
44 words
A wear-resistant spout for metallurgical vessles, particularly a tundish nozzle and slider drain, consisting of a vessel provided with an orifice and a highly wear-resistant insert in said orifice exposed to the melt, wherein the insert consists of a practically poreless oxide-ceramic refractory material.
Claim 3
Dependent Claim
25 words
A wear-resistant spout according to claim 1, wherein the insert consists of a practically poreless oxide-ceramic material that has been sintered at least at 1,600*C.
Claim 4
Dependent Claim
15 words
A wear-resistant spout according to claim 1, wherein the insert consists of a melt-cast oxide-ceramic.
Claim 5
Dependent Claim
17 words
A spout according to claim 1 wherein the insert in the vessel is maintained positively locked thereto.
Claim 6
Dependent Claim
17 words
A spout according to claim 1 wherein the insert is cemented into an orifice in the vessel.
Claim 7
Dependent Claim
15 words
A spout according to claim 1 wherein the insert and the vessel are sintered together.
Claim 8
Dependent Claim
12 words
A spout according to claim 1 wherein the insert is machined mechanically.
Claim 9
Dependent Claim
12 words
A spout according to claim 1 wherein the insert consists of corundum.
Claim 10
Dependent Claim
20 words
An insert according to claim 1 wherein the insert consists of mullite, magnesite, spinel, zirconium oxide individually or in combination.
Claim 11
Dependent Claim
48 words
A spout according to claim 1 wherein the insert consists of a double-part sleeve, of which one part is mounted in the bottom of the vessel and of which the other part is mounted in a slider shutter which selectively opens and closes the orifice in said vessel.
References Cited (Backward Citations)
US3511261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |