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WO1993001317A1 - Conception d'un fond pour un recipient metallurgique - Google Patents

Conception d'un fond pour un recipient metallurgique Download PDF

Info

Publication number
WO1993001317A1
WO1993001317A1 PCT/EP1992/001512 EP9201512W WO9301317A1 WO 1993001317 A1 WO1993001317 A1 WO 1993001317A1 EP 9201512 W EP9201512 W EP 9201512W WO 9301317 A1 WO9301317 A1 WO 9301317A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
rod
stove construction
construction mass
distribution device
Prior art date
Application number
PCT/EP1992/001512
Other languages
German (de)
English (en)
Inventor
Hans Rinnhofer
Robert Schmidberger
Original Assignee
Veitsch-Radex Aktiengesellschaft Für Feuerfeste Erzeugnisse
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 Veitsch-Radex Aktiengesellschaft Für Feuerfeste Erzeugnisse filed Critical Veitsch-Radex Aktiengesellschaft Für Feuerfeste Erzeugnisse
Publication of WO1993001317A1 publication Critical patent/WO1993001317A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases
    • B22D1/005—Injection assemblies therefor

Definitions

  • the invention relates to a base formation for a metallurgical vessel, consisting of a refractory stove construction mass and a gas distribution device, preferably arranged in the stove construction mass, with at least one gas outlet opening for purge gas.
  • a metallurgical vessel which has a distribution device for purging gas arranged in the stove construction mass.
  • the injected purge gas flows through the gas-permeable stove construction mass.
  • the object of the invention is to avoid these disadvantages and to provide a base for a metallurgical vessel which enables the introduction of purge gas in a controlled and predictable manner.
  • At least one rod-shaped body is embedded in the stove construction mass, which consists of a material whose thermal expansion behavior is different from that of the stove construction mass.
  • At least one rod-shaped body made of porous material is embedded in the stove construction mass in the region of the gas outlet opening.
  • the basic idea of the invention is that the flow path of the purge gases is predetermined by the installation of rod-shaped bodies in the generally gas-permeable stove construction mass. Two closely related effects are used. On the one hand, small gaps are generated at the interface between the rod-shaped bodies and the stove construction mass, in which the purge gas can flow with very little resistance.
  • the rod-shaped bodies - according to one embodiment - are made of porous material, including one Facilitate gas transportation inside these bodies. In this way it is forced that the main part of the purge gas spreads along the rod-shaped body.
  • the stove construction mass is exposed to strong temperature changes during the operation of the vessel, so that when there are different coefficients of thermal expansion or generally different heat expansion behavior, new gaps always form between the bodies and the stove construction mass.
  • a nozzle block as described in DE-C 37 42 861 can be provided as the distribution device for the purge gas.
  • the flow can be controlled particularly reliably if the rod-shaped bodies extend from the immediate vicinity of the gas outlet opening to the surface of the lining layer. However, it is not absolutely necessary for the rod-shaped bodies to extend to the surface of the hearth in the newly delivered vessel.
  • the distribution device is designed as a pipe system with a large number of gas outlet openings and that the rod-shaped bodies are arranged essentially radially to the pipe. Due to the tubular design of the gas distribution device, a very low specific load on the stove construction mass can be achieved. Due to the radial alignment of the rod-shaped bodies, the width of the outlet area can be adjusted via the distribution device.
  • the distribution device is designed as a hollow box with a large number of gas outlet openings.
  • the rod-shaped bodies extend essentially perpendicular to Surface of the lining layer. This enables a particularly homogeneous distribution of the purge gases to be achieved.
  • a gas-tight shield is arranged below and to the side of the gas distribution device and if the rod-shaped bodies protrude into the area enclosed by the shield. In this way, additional protection against the occurrence of "stray" gases is achieved.
  • a further reduction in the load on the stove construction mass is achieved in that the gas distribution device is surrounded by a layer of coarse-grained material which is completely covered at the top by the stove construction mass of the lining layer.
  • the rod-shaped bodies can also protrude into the layer of coarse-grained material.
  • Figure 1 the arrangement of rod-shaped bodies within a lining layer
  • FIG. 2 a partial cross section through a metallurgical vessel with a body lining according to the invention
  • Figure 3 is a partial perspective view of an embodiment of the floor lining
  • FIG. 4 is a perspective view of another embodiment.
  • a single gas outlet opening 7 is shown schematically in FIG. This lies within a layer 8 made of coarse-grained or porous material.
  • a lining layer 9 made from a stove construction mass is provided over this layer 8.
  • the gas flowing out of the outlet opening 7 first flows through the layer 8 along the arrows 24.
  • the main part of the gas still enters the rod-shaped bodies within the layer 8, which have the reference number 20, or into the narrow gaps between these rod-shaped bodies 20 and their surroundings.
  • the main part of the gas penetrates according to the lowest flow resistance along the arrows 25 to the surface 10 of the layer 9 and enters the metallurgical molten bath (not shown) located above the layer 9.
  • part of the purge gas can diffuse into the molten bath according to the arrows 26 next to the rod-shaped bodies 20.
  • the main part of the purge gas becomes inside the rod-shaped body 20 according to arrow 25 transported or flow according to the arrow 28 in the corner and side areas 27 of the rod-shaped body 20.
  • the metallurgical vessel has a steel jacket 1 with a permanent lining 2 and a gas-tight layer 17.
  • a layer 9 of a gas-permeable stove construction mass is provided above the gas-tight layer 17.
  • a tubular distribution device 3a is embedded, which is surrounded at the bottom and on the sides by a gas-tight shield 19.
  • the tubular gas distribution device 3a is covered by a layer 8 made of a porous surrounded the crowd.
  • the rod-shaped bodies 20 are arranged radially to the distribution device 3 a and extend from the layer 8 to the surface 10 of the gas-permeable layer 9.
  • the shield 19 is arranged directly in the layer 9.
  • a grid 21 is arranged above the gas distribution device 3a, which holds the rod-shaped bodies 20 in a defined position.
  • FIG. 4 shows a box-shaped gas distribution device 3b which is supplied with gas via a feed line 4.
  • the device 3b is sealed off from the steel jacket with a sealing socket 5 in order to avoid gas losses.
  • the rod-shaped bodies 20 are arranged essentially parallel to one another and perpendicular to the surface 10 of the lining layer 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

La présente invention se rapporte à la conception d'un fond pour un récipient métallurgique, constitué d'un revêtement réfractaire pour four, ainsi que d'un dispositif de répartition de gaz (3a, 3b) disposé dans le revêtement réfractaire (9). Ledit dispositif de répartition de gaz comporte au moins un orifice de sortie des gaz (7) pour le gaz de lavage. Au voisinage de l'orifice de sortie des gaz (7) et dans le revêtement réfractaire est noyé au moins un corps en forme de barre (20). Le comportement en dilatation thermique du matériau constitutif de ce corps en forme de barre est différent de celui du revêtement réfractaire.
PCT/EP1992/001512 1991-07-08 1992-07-04 Conception d'un fond pour un recipient metallurgique WO1993001317A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0136391A AT398632B (de) 1991-07-08 1991-07-08 Metallurgisches gefäss
AT1363/91 1991-07-08

Publications (1)

Publication Number Publication Date
WO1993001317A1 true WO1993001317A1 (fr) 1993-01-21

Family

ID=3512269

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1992/001512 WO1993001317A1 (fr) 1991-07-08 1992-07-04 Conception d'un fond pour un recipient metallurgique

Country Status (5)

Country Link
AT (1) AT398632B (fr)
AU (1) AU2229792A (fr)
PL (1) PL298234A1 (fr)
WO (1) WO1993001317A1 (fr)
ZA (1) ZA925038B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005050661A1 (de) * 2005-10-20 2007-05-16 Forschungszentrum Juelich Gmbh Mehrlagige Wärmedämmschichtsysteme und Verfahren zur Herstellung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021861A1 (fr) * 1979-04-25 1981-01-07 INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE (IRSID) France Pièce réfractaire perméable aux gaz et son procédé de fabrication
FR2525755A1 (fr) * 1982-04-23 1983-10-28 Usinor Four electrique a arc muni de moyens de brassage du bain metallique
DE3634448A1 (de) * 1986-10-09 1988-04-21 Didier Werke Ag Spueleinrichtung
EP0320673A1 (fr) * 1987-12-17 1989-06-21 Thyssen Stahl Aktiengesellschaft Récipient métallurgique
EP0347351A1 (fr) * 1988-06-17 1989-12-20 Vallourec Industries Procédé de traitement des aciers liquides par injection de gaz à travers le fond de poche
US4938461A (en) * 1989-06-02 1990-07-03 Zedmark Refractories Corp. Device for distributing gas into molten metal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU78031A1 (fr) * 1977-08-26 1979-11-22 Liege Usines Cuivre Zinc Amenagement de la sole d'un four reverbere
DE3322485A1 (de) * 1982-06-24 1983-12-29 British Steel Corp., London Vorrichtung und verfahren zur metallverarbeitung bzw. -veredelung
FR2644566B1 (fr) * 1989-03-15 1991-06-21 Air Liquide Four electrique a arc et procede de fusion de ferrailles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021861A1 (fr) * 1979-04-25 1981-01-07 INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE (IRSID) France Pièce réfractaire perméable aux gaz et son procédé de fabrication
FR2525755A1 (fr) * 1982-04-23 1983-10-28 Usinor Four electrique a arc muni de moyens de brassage du bain metallique
DE3634448A1 (de) * 1986-10-09 1988-04-21 Didier Werke Ag Spueleinrichtung
EP0320673A1 (fr) * 1987-12-17 1989-06-21 Thyssen Stahl Aktiengesellschaft Récipient métallurgique
EP0347351A1 (fr) * 1988-06-17 1989-12-20 Vallourec Industries Procédé de traitement des aciers liquides par injection de gaz à travers le fond de poche
US4938461A (en) * 1989-06-02 1990-07-03 Zedmark Refractories Corp. Device for distributing gas into molten metal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005050661A1 (de) * 2005-10-20 2007-05-16 Forschungszentrum Juelich Gmbh Mehrlagige Wärmedämmschichtsysteme und Verfahren zur Herstellung
US7998601B2 (en) 2005-10-20 2011-08-16 Forschungszentrum Juelich Gmbh Sandwich thermal insulation layer system and method for production

Also Published As

Publication number Publication date
ZA925038B (en) 1993-04-28
AT398632B (de) 1995-01-25
AU2229792A (en) 1993-02-11
ATA136391A (de) 1994-05-15
PL298234A1 (en) 1993-09-06

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