EP0051910A1 - Gefäss für geschmolzenes Metall - Google Patents

Gefäss für geschmolzenes Metall Download PDF

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Publication number
EP0051910A1
EP0051910A1 EP81301838A EP81301838A EP0051910A1 EP 0051910 A1 EP0051910 A1 EP 0051910A1 EP 81301838 A EP81301838 A EP 81301838A EP 81301838 A EP81301838 A EP 81301838A EP 0051910 A1 EP0051910 A1 EP 0051910A1
Authority
EP
European Patent Office
Prior art keywords
lining
refractory
vessel
molten metal
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP81301838A
Other languages
English (en)
French (fr)
Inventor
Masaru Takashima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aikoh Co Ltd
Original Assignee
Aikoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aikoh Co Ltd filed Critical Aikoh Co Ltd
Publication of EP0051910A1 publication Critical patent/EP0051910A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/02—Linings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
    • F27B3/10—Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
    • F27B3/12—Working chambers or casings; Supports therefor
    • F27B3/14—Arrangements of linings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs

Definitions

  • This invention relates to an-improvement in or relating to the structure of a vessel for molten metals, particularly a tundish used in the continuous casting of steel and which requires heat retention properties.
  • a known tundish for continuous casting of steel has a steel shell provided with a refractory non-consumable durable lining and an adiabatic (heat resistant) consumable lining.
  • Japanese Patent Publication No. 8448/79 describes a technique in which between the consumable lining and the non-consumable lining there is provided a refractory material which is of dispersed and not of solid form, thereby making a heat insulating layer or lining.
  • a consumable lining is a temporary lining and is required to have strength enough to endure for the time of a single pouring operation only, based on adiabatic properties. Therefore, except for low temperature melts such as molten aluminium, there is usually used a base of brick or a mouldable refractory layer which forms a non-consumable lining so that even if the consumable lining is damaged during the pouring process due to the high temperature of the melt, or if in extreme cases the consumable lining is used up, leakage does not occur due to the protection from the strength of the non-consumable lining.
  • a base of brick or a mouldable refractory layer which forms a non-consumable lining so that even if the consumable lining is damaged during the pouring process due to the high temperature of the melt, or if in extreme cases the consumable lining is used up, leakage does not occur due to the protection from the strength of the non-consumable lining.
  • a space between the durable lining and the temporary lining whereby the space is filled with a refractory which consists of dispersed particles and which is not solid, the intention being to lessen the thickness of both linings; the space filled with a refractory is convenient for removing the temporary lining after the completion of pouring. Owing to the fluidity of the particles of the refractory layer, however, the vessel will no longer have resistance to the entry of melt when the temporary lining is damaged or partially peeled away. If protection against such occurrence is required it is not possible to decrease the thickness of the temporary lining or the durable lining.
  • An object of this invention is to obtain heat resistance and heat retention by preventing the refractory in a dispersed (loose) form from collapsing and by sintering the refractory using the temperature rise and heat from the molten metal, thereby forming an integral shell of a refractory or heat insulating solid layer over the external surface of the layer in the region of the contact point with the rear portion of the innermost refractory adiabatic lining as a temporary lining or over the layer completely.
  • a vessel for molten metal characterised by a metal outer shell with a refractory adiabatic lining on the inside spaced from the shell, a refractory layer in loose form which is sintered at a temperature higher than 500°C being provided in contact with the lining between the lining and shell.
  • the outermost side is provided with a steel or other metal shell with the innermost part in contact with the melt having a refractory and heat insulating lining, the inside being provided with a durable lining which, in the case of comparatively low temperature melts, can be omitted.
  • a durable lining it is preferable for the lining to be based on refractory bricks or a castable refractory or like material. If bricks are used sufficient joints are applied to prevent entry of refractory in loose form into the joints.
  • the refractory adiabatic lining provided on the innermost side is a moulded layer which is conventionally employed and based on a refractory powder, an organic or inorganic fiber and a binder. Such material is consumable, light and highly adiabatic and is used in the form of thin board.
  • the refractory in loose form is one which does not melt or is not shrunk to any great extent when used, and may comprise siliceous sand, olivin sand, chromite, zircon sand, chamotte, alumina, magnesia, brick, slag or the like in the form of powder or grain mixed with a known binder, the mixture being sintered at a temperature above 500°C.
  • the sintering temperature is a temperature to which the refractory layer in the loose form is subject through the refractory adiabatic lining at comparatively low temperature of molten metal, and for molten metals lower than this temperature it is unnecessary to select refractory material with particular care.
  • powders or liquids can be added to promote sintering.
  • Use can be made of sintering agents such as glass and iron oxide, flux such as boron compound, fluoride and alkali compound, and binders such as paste, resin, pitch and rubber, the amount being such that the fluidity of the mixture does not adversely affect the filling operation into the space.
  • a durable lining 2 is arranged on the inside and in contact with a metal shell 1 and a refractory 3 in loose form is laid on the bottom.
  • the top of the refractory 3 is lined with a refractory adiabatic bottom lining board 4, and a refractory adiabatic side lining board 4 1 forms a gap almost of the same thickness as the bottom refractory layer 3, and the board lies parallel with the side walls with the space between the lining 2 and the board 4 1 filled with the refractory in the loose form from the top to form a refractory side layer 3 1 .
  • the filling operation may be carried out manually or by a blowing machine.
  • Figure 2 shows another embodiment of the invention in which the durable lining has been omitted, and the refractory 3, 3 in loose form is applied in the same way as in the first example.
  • the refractory adiabatic lining board it is possible to coat the edges with a binder or a jointing agent.
  • the vessel for molten metal thus produced with the linings is subject to the molten metal, either with preheating for a short period of time at temperatures from 300 to 800°C or without preheating.
  • the refractory adiabatic lining board As thin as possible (such as 5 mm) because there is less lowering of the temperature of the metal by heat absorption of the lining board.
  • the refractory in loose form is sintered at low temperatures and therefore if a powdery refractory mixed with thermo-setting resin is used, such as resin-coated sand, the powdery refractory is solidified due to the heat of the molten metal though the board when the surface area brought into contact with the board is carbonized for solidification to form a solid lining layer, thereby maintaining an adiabatic heat-retaining layer for one casting operation.
  • the thickness and type of lining layer can be made the same as for molten aluminium or greater by using a high quality refractory material, according to the capacity of the Vessel, the working time, the kind of working etcetera.
  • the lining may be provided with a specifically high grade refractory at the pouring point and with an exothermic moulding around the lip.
  • a 65 mm thick lining of refractory brick (chamotte brick) is applied in contact with a shell of steel tundish (in which the upper portion width is 650 mm, the bottom width is 420 mm, the depth is 750 mm and the length is 5,800 mm), the inside of the vessel is lined with a 25 mm thick refractory adiabatic lining board moulded with quartz sand, kaolin fiber and silica sol, the space between the refractory brick and the lining board is 10 mm wide and filled with a powdery mixture of 99% siliceous sand and 1% anhydrous borax.
  • the siliceous sand layer as a refractory layer in the loose form was made 115 mm thick and pouring was effected under the same conditions.
  • an adhering layer of about 30 mm thick on average fell down together with the residue of the board, and the remaining siliceous sand layer also fell down in the form of powder or mass.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Continuous Casting (AREA)
EP81301838A 1980-11-10 1981-04-27 Gefäss für geschmolzenes Metall Withdrawn EP0051910A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP156963/80 1980-11-10
JP55156963A JPS5781945A (en) 1980-11-10 1980-11-10 Container for molten metal

Publications (1)

Publication Number Publication Date
EP0051910A1 true EP0051910A1 (de) 1982-05-19

Family

ID=15639137

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81301838A Withdrawn EP0051910A1 (de) 1980-11-10 1981-04-27 Gefäss für geschmolzenes Metall

Country Status (5)

Country Link
EP (1) EP0051910A1 (de)
JP (1) JPS5781945A (de)
AU (1) AU542880B2 (de)
ES (1) ES266011Y (de)
FI (1) FI811335A7 (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134234A (en) * 1983-01-21 1984-08-08 Labate Michael D Blast furnace trough and liner combination
DE3306423A1 (de) * 1983-02-24 1984-08-30 Didier-Werke Ag, 6200 Wiesbaden Ungebranntes feuerfestes bauteil in form einer platte fuer die verlorene auskleidung von metallurgischen gefaessen
FR2657549A1 (fr) * 1990-01-26 1991-08-02 Daussan & Co Procede pour appliquer sur les faces interieures d'un recipient metallurgique un revetement de protection comportant au moins deux couches et revetement de protection ainsi obtenu.
WO1991017402A1 (en) * 1990-05-04 1991-11-14 Paroc Oy Ab Method of lining the side walls in a melting furnace
EP0547619A1 (de) * 1991-12-19 1993-06-23 Didier-Werke Ag Stahlgiesspfanne
US5287327A (en) * 1990-11-20 1994-02-15 Oki Electric Industry Co., Ltd. Synchronous dynamic random access memory
EP1288569A3 (de) * 2001-08-29 2003-12-03 Hikari Tech Co. Ltd. Ascheschmelzvorrichtung
US7413797B2 (en) 2006-05-31 2008-08-19 Unifrax Illc Backup thermal insulation plate
CN107812928A (zh) * 2017-10-25 2018-03-20 江阴市弘诺机械设备制造有限公司 一种具有外挂保温结构的钢水包
CN112264610A (zh) * 2020-09-30 2021-01-26 广东韶钢松山股份有限公司 一种铁水罐及其制备方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108746574B (zh) * 2018-07-25 2019-12-13 青岛万恒达机械设备有限公司 一种钢包烘烤方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3203689A (en) * 1961-05-15 1965-08-31 Standard Pressed Steel Co Refractory-lined tundishes
US3345059A (en) * 1965-03-12 1967-10-03 United States Steel Corp Crucible for holding molten metal
DE1433829A1 (de) * 1962-04-13 1968-10-17 Aluminium Company Behaelter fuer geschmolzenes Metall
DE1558579A1 (de) * 1967-06-13 1970-04-09 Gottfried Lichtenberg Gmbh Feuerbestaendiges,waermeisolierendes Futter fuer die Zustellung von Industrieoefen
FR2239309A1 (de) * 1973-07-30 1975-02-28 Foseco Int
FR2330951A1 (fr) * 1975-11-10 1977-06-03 Foseco Trading Ag Plaques de revetement en matiere refractaire calorifuge, notamment pour utilisation en metallurgie
DE2716092A1 (de) * 1977-04-12 1978-10-19 Contherm Ind Und Huettenbedarf Auskleidung eines tundishs
GB1569970A (en) * 1977-03-08 1980-06-25 Metalaids Processes Ltd Tundish lining
GB2043221A (en) * 1979-02-22 1980-10-01 Doerentruper Sand & Thonwerk Induction crucible furnace and a method of lining such a furnace

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3203689A (en) * 1961-05-15 1965-08-31 Standard Pressed Steel Co Refractory-lined tundishes
DE1433829A1 (de) * 1962-04-13 1968-10-17 Aluminium Company Behaelter fuer geschmolzenes Metall
US3345059A (en) * 1965-03-12 1967-10-03 United States Steel Corp Crucible for holding molten metal
DE1558579A1 (de) * 1967-06-13 1970-04-09 Gottfried Lichtenberg Gmbh Feuerbestaendiges,waermeisolierendes Futter fuer die Zustellung von Industrieoefen
FR2239309A1 (de) * 1973-07-30 1975-02-28 Foseco Int
FR2330951A1 (fr) * 1975-11-10 1977-06-03 Foseco Trading Ag Plaques de revetement en matiere refractaire calorifuge, notamment pour utilisation en metallurgie
GB1569970A (en) * 1977-03-08 1980-06-25 Metalaids Processes Ltd Tundish lining
DE2716092A1 (de) * 1977-04-12 1978-10-19 Contherm Ind Und Huettenbedarf Auskleidung eines tundishs
GB2043221A (en) * 1979-02-22 1980-10-01 Doerentruper Sand & Thonwerk Induction crucible furnace and a method of lining such a furnace

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134234A (en) * 1983-01-21 1984-08-08 Labate Michael D Blast furnace trough and liner combination
DE3306423A1 (de) * 1983-02-24 1984-08-30 Didier-Werke Ag, 6200 Wiesbaden Ungebranntes feuerfestes bauteil in form einer platte fuer die verlorene auskleidung von metallurgischen gefaessen
FR2657549A1 (fr) * 1990-01-26 1991-08-02 Daussan & Co Procede pour appliquer sur les faces interieures d'un recipient metallurgique un revetement de protection comportant au moins deux couches et revetement de protection ainsi obtenu.
WO1992020479A1 (fr) * 1990-01-26 1992-11-26 Daussan Et Compagnie Procede pour appliquer sur les faces interieures d'un recipient metallurgique un revetement de protection comportant au moins deux couches, et revetement de protection ainsi obtenu
WO1991017402A1 (en) * 1990-05-04 1991-11-14 Paroc Oy Ab Method of lining the side walls in a melting furnace
US5287327A (en) * 1990-11-20 1994-02-15 Oki Electric Industry Co., Ltd. Synchronous dynamic random access memory
US5339276A (en) * 1990-11-20 1994-08-16 Oki Electric Industry Co., Ltd. Synchronous dynamic random access memory
US5430688A (en) * 1990-11-20 1995-07-04 Oki Electric Industry Co., Ltd. Synchronous dynamic random access memory
US5521879A (en) * 1990-11-20 1996-05-28 Oki Electric Industry Co., Ltd. Synchronous dynamic random acess memory
EP0547619A1 (de) * 1991-12-19 1993-06-23 Didier-Werke Ag Stahlgiesspfanne
EP1288569A3 (de) * 2001-08-29 2003-12-03 Hikari Tech Co. Ltd. Ascheschmelzvorrichtung
US7413797B2 (en) 2006-05-31 2008-08-19 Unifrax Illc Backup thermal insulation plate
CN107812928A (zh) * 2017-10-25 2018-03-20 江阴市弘诺机械设备制造有限公司 一种具有外挂保温结构的钢水包
CN112264610A (zh) * 2020-09-30 2021-01-26 广东韶钢松山股份有限公司 一种铁水罐及其制备方法

Also Published As

Publication number Publication date
FI811335L (fi) 1982-05-11
JPS5781945A (en) 1982-05-22
AU6919481A (en) 1982-05-20
ES266011Y (es) 1983-09-01
ES266011U (es) 1983-03-16
FI811335A7 (fi) 1982-05-11
AU542880B2 (en) 1985-03-21

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE DE FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19821020

ITF It: translation for a ep patent filed
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19851031

RIN1 Information on inventor provided before grant (corrected)

Inventor name: TAKASHIMA, MASARU