US4240496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-insulating articles
Assignee: Foseco Trading AG
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Filing: 1979-05-30
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Granted: 1980-12-23
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Expires: 1999-05-30
Abstract
Abstract The invention provides shaped, refractory, heat-insulating articles, for use in a metallurgical vessel, comprising particulate refractory material, binder and particulate de-fibred bagasse or the like. The articles may be made by mixing the ingredients, pressing them in a former and causing or allowing the binder to set. The articles may be slabs for lining the head of a mould for steel ingots.
Inventors
- 👤 Tarek El Gammal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:19
CPC Classifications
B; B22; B22D; B22D7/00; B22D7/06; B22D7/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
36 words
In a shaped, refractory, heat-insulating article, for use in a metallurgical vessel, formed of a mixture comprising a particulate refractory material and a binder, the improvement comprising the inclusion of particulate de-fibred bagasse in said mixture.
Claim 2
Dependent Claim
36 words
In a shaped, refractory, heat-insulating article, for use in a metallurgical vessel, formed of a mixture comprising a particulate refractory material and a binder, the improvement comprising the inclusion of particulate de-fibred bagasse in said mixture.
Claim 3
Dependent Claim
31 words
An article according to claim 1 comprising 50 to 90% by weight particulate refractory material, 5 to 30% by weight of de-fibred bagasse and 3 to 10% by weight of binder.
Claim 4
Dependent Claim
40 words
A method of making an article according to claim 1, which method comprises forming the refractory material, de-fibred bagasse and binder into a mixture, shaping the mixture, subjecting the shaped mixture to pressure and allowing the binder therein to set.
Claim 5
Dependent Claim
19 words
An ingot mould having, in the head thereof, a lining comprising at least on article according to claim 1.
Claim 6
Dependent Claim
23 words
An ingot mould having, in a head box at the head thereof, a lining comprising at least one article according to claim 1.
Claim 7
Dependent Claim
19 words
A method of making a steel ingot comprising pouring molten steel into an ingot mould according to claim 4.
Claim 8
Dependent Claim
19 words
A method of making a steel ingot comprising pouring molten steel into an ingot mould according to claim 5.
References Cited (Backward Citations)
US2729856A
Cited
GB977191A
Cited
GB1278473A
Cited
US3759724A
Cited
US4042206A
Cited
US4012262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-23 | 1984-06-23 | 1984-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-23 | 1988-06-23 | 1988-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-23 | 1992-06-23 | 1992-12-23 | $7700.00 | Window Closed / Lapsed |