US4339115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat insulating lining for metallurgical vessels
Assignee: Daussan SAS
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Filing: 1980-03-11
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Granted: 1982-07-13
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Expires: 2000-03-11
Abstract
Abstract The heat insulating lining of the metallurgical vessel includes a permanent layer in a refractory material and a consumable layer arranged in the interior of the vessel and intended to be in direct contact with the liquid metal. This layer consists of a mixture of inorganic particles and of mineral and/or organic fibers embedded in an organic and/or inorganic binder. Between the permanent layer and the consumable layer is fitted a relatively compressible layer of an inorganic and/or organic fibre base resistant to the temperature pertaining at the contact of the consumable layer, these fibres being partially embedded in an organic and/or inorganic binder.
Inventors
- 👤 Jean-Charles Daussan
- 👤 Gerard Daussan
- 👤 Andre Daussan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:57
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
168 words
In a heat insulating lining for metallurgical vessels intended to contain liquid metal, comprising a permanent layer in a refractory material and a consumable layer to be fitted to the interior of the vessel and intended to be in direct contact with the liquid metal, said consumable layer comprising a plurality of plates made of a mixture of inorganic particles and of fibers, said particles and fibers being embedded in a binder; the improvement comprising, between the above-mentioned permanent and consumable layers, a compressible layer of fibers resistant to the temperature obtaining at the interface between said compressible layer and said consumable layer, the last-named fibers being partially embedded in a binder, the amount of binder being about 10 to 30% by weight of the said compressible layer in order to impart to said compressible layer a compressibility between about 5 and 10% under a pressure of 10 kg/cm 2 applied on said compressible layer, and said compressible layer covering substantially the whole surface of the permanent layer.
Claim 2
Dependent Claim
168 words
In a heat insulating lining for metallurgical vessels intended to contain liquid metal, comprising a permanent layer in a refractory material and a consumable layer to be fitted to the interior of the vessel and intended to be in direct contact with the liquid metal, said consumable layer comprising a plurality of plates made of a mixture of inorganic particles and of fibers, said particles and fibers being embedded in a binder; the improvement comprising, between the above-mentioned permanent and consumable layers, a compressible layer of fibers resistant to the temperature obtaining at the interface between said compressible layer and said consumable layer, the last-named fibers being partially embedded in a binder, the amount of binder being about 10 to 30% by weight of the said compressible layer in order to impart to said compressible layer a compressibility between about 5 and 10% under a pressure of 10 kg/cm 2 applied on said compressible layer, and said compressible layer covering substantially the whole surface of the permanent layer.
Claim 3
Dependent Claim
44 words
A lining as claimed in claim 1, the compressible and fibrous layer includes, in addition, 0.5 to 20% by weight of refractory particles with an added flux in order to obtain sintering of these particles at a temperature between 1,100° C. and 1,500° C.
Claim 4
Dependent Claim
26 words
A lining as claimed in claim 1, in which the compressible and fibrous layer includes, in addition, 1 to 10% by weight of a triglyceride oil.
Claim 5
Dependent Claim
37 words
A lining as claimed in claim 1, said compressible layer having on its face intended to come in contact with the consumable layer, a layer of a binder, said layer covering at least partially said compressible layer.
Claim 6
Dependent Claim
17 words
A lining as claimed in claim 4, in which the binder layer adheres to the consumable layer.
Claim 7
Dependent Claim
29 words
A lining as claimed in claim 4, in which a binder layer is also applied to the face of the compressible and fibrous layer facing the permanent refractory layer.
Claim 8
Dependent Claim
53 words
A lining as claimed in claim 1, and a pouring hole lined on the interior with a layer of the same material as that of the consumable plates which cover the interior of the vessel, and a compressible layer of fiber between the refractory wall of the pouring hole and said consumable layer.
Claim 9
Dependent Claim
53 words
A lining as claimed in claim 1, in which the zone of impact of the jet of liquid metal poured into the vessel is covered by a protective plate in a material resistant to erosion, and a compressible layer of fibers between said protective plate and the permanent refractory layer of the lining.
Claim 10
Dependent Claim
39 words
A lining as claimed in claim 1, in which the inside face of the consumable plates has a hollow in which is lodged the compressible and fibrous layer, this last-named layer overlapping on either side of the consumable plates.
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) | 1985-07-12 | 1986-01-11 | 1986-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-12 | 1990-01-11 | 1990-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-12 | 1994-01-11 | 1994-07-13 | $7700.00 | Window Closed / Lapsed |