US3963815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of lining molten metal vessels and spouts with refractories
Assignee: Harima Refractories Co Ltd
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Filing: 1974-06-20
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Granted: 1976-06-15
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Expires: 1994-06-20
Abstract
Abstract A method of lining molten metal vessels and spouts with refractories, characterized in that refractories having adjusted grain size are thrown in the outer frame of a top opened vessels and spouts for molten metal and an inner molding frame for lining, which is provided with a vibrator and able to be imposed with loads, is mounted on said refractories and settled down to the prescribed position in the outer frame while vibrated and loaded, so that the internal circumference of the beforementioned outer frame can be lined with the refractories.
Inventors
- 👤 Toshiyuki Ezaki
- 👤 Kunio Furukawa
- 👤 Yasushige Enomoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:31
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/16; F27D1/1626; B; B22; B22D; B22D41/00; B22D41/02; B22D41/023; F27D3/00; F27D2003/0034; F27D2003/0038
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
A method for lining metal vessels and spouts to be used for molten metals with refractories comprising the steps of: A. introducing a particulate refractory material composed of 30% to 70% by weight of aggregate particles having a grain size from 1 to 8 mm and 70% to 30% by weight of matrix particles not larger than 1 mm into the spout or vessel; B. placing a molding frame having a desired lining profile on the refractory material; C. subjecting the refractory material to vibration of a frequency from 1500 to 9000 v.p.m. and an amplitude of 0.2 to 3.0 mm to place the refractory in a fluidic state; and D. applying a load of 1.5 to 12 tons per cubic meter based on the volume of the molding frame to the molding frame during said vibration whereby the molding frame settles to a predetermined position to displace a portion of the refractory material which fills the space thus created between the side of the vessel or spout and the molding frame and forms a homogeneous and dense lining.
Claim 2
Independent Claim
179 words
A method for lining metal vessels and spouts to be used for molten metals with refractories comprising the steps of: A. introducing a particulate refractory material composed of 30% to 70% by weight of aggregate particles having a grain size from 1 to 8 mm and 70% to 30% by weight of matrix particles not larger than 1 mm into the spout or vessel; B. placing a molding frame having a desired lining profile on the refractory material; C. subjecting the refractory material to vibration of a frequency from 1500 to 9000 v.p.m. and an amplitude of 0.2 to 3.0 mm to place the refractory in a fluidic state; and D. applying a load of 1.5 to 12 tons per cubic meter based on the volume of the molding frame to the molding frame during said vibration whereby the molding frame settles to a predetermined position to displace a portion of the refractory material which fills the space thus created between the side of the vessel or spout and the molding frame and forms a homogeneous and dense lining.
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) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |