EP0458040B1 - Installation pour lavage au gaz avec une brique perforée et une brique pour lavage au gaz - Google Patents

Installation pour lavage au gaz avec une brique perforée et une brique pour lavage au gaz Download PDF

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Publication number
EP0458040B1
EP0458040B1 EP91105127A EP91105127A EP0458040B1 EP 0458040 B1 EP0458040 B1 EP 0458040B1 EP 91105127 A EP91105127 A EP 91105127A EP 91105127 A EP91105127 A EP 91105127A EP 0458040 B1 EP0458040 B1 EP 0458040B1
Authority
EP
European Patent Office
Prior art keywords
gas
brick
gas purging
perforated brick
perforated
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.)
Expired - Lifetime
Application number
EP91105127A
Other languages
German (de)
English (en)
Other versions
EP0458040A2 (fr
EP0458040A3 (en
Inventor
Hans Rothfuss
Herbert Metzger
Manfred Winkelmann
Udo Muschner
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.)
Didier Werke AG
Original Assignee
Didier Werke AG
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 Didier Werke AG filed Critical Didier Werke AG
Publication of EP0458040A2 publication Critical patent/EP0458040A2/fr
Publication of EP0458040A3 publication Critical patent/EP0458040A3/de
Application granted granted Critical
Publication of EP0458040B1 publication Critical patent/EP0458040B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • 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 gas purging device on a metallurgical vessel, in which a refractory, ceramic perforated brick is inserted into a lining of the vessel bottom, which receives a refractory, ceramic gas purging brick, the gas outlet side of which is covered with respect to the interior of the vessel.
  • Such a gas purging device is described in DE-36 33 516 C2.
  • the upper gas flushing cone sits in the lining of the bottom of the vessel.
  • the lower gas purging cone is arranged in a perforated brick. This is covered by the lining.
  • the upper gas purging cone and the perforated brick are separate components, each of which must be integrated into the lining.
  • DE-39 01 926 C1 describes a gas purging device in which a perforated brick sits in a floor lining. A gas flushing cone is inserted into this. In the interior of the vessel, a wear hood is placed on the gas purging cone or perforated stone from above, which is gas-permeable in the central area. The wear hood must be sealed in addition to the perforated brick on the bottom of the vessel. In addition, it must be connected to the gas flushing cone. This structure appears to be complex. Difficulties also arise if the lining in the area of the seal arranged between the wear hood and the lining or the seal itself wears out.
  • the object of the invention is to provide a gas purging device of the type mentioned, the structure of which is simplified and which only has to be replaced when the wear on the lining has progressed to such an extent that repairs are necessary.
  • the above object is achieved in a gas purging device of the type mentioned at the outset in that the perforated brick projects beyond the gas purging brick and the lining in the interior of the vessel with an area which is gas-permeable following the gas outlet side of the gas purging brick.
  • the perforated brick is tightly fastened in the brick lining and stands in the interior of the vessel. It covers the gas purging plug from the inside of the vessel. From the gas purging stone, the purging gas passes through the perforated stone into the melt.
  • the area of the perforated brick protruding into the interior of the vessel will wear out during operation. However, it protects the gas purging plug from wear.
  • the perforated brick will only be replaced when the lining is worn out to such an extent that maintenance work is required anyway.
  • the gas permeability of the perforated brick can be achieved by having a porosity or capillary in the area mentioned.
  • a gas-permeable insert can also be fastened in the area of the perforated brick mentioned.
  • the perforated brick is preferably gas-permeable only above that zone of the gas outlet side of the gas flushing brick at which the gas emerges. As a result, there is a non-gas-permeable ring zone in the protruding area of the perforated brick. Less wear is to be expected in this area than in the central zone of the outstanding area.
  • a perforated brick for said gas flushing device is characterized in that the height of the perforated brick is greater than the depth of its recess provided for receiving the gas flushing brick, the perforated brick at the bottom of the recess being gas-permeable.
  • the gas purging plug sits in a manner known per se with a sheet metal jacket in the perforated brick. There is a joint between the sheet metal jacket and the recess in the perforated brick. In order to prevent melt from entering the joint when the gas purging plug is worn out in its gas-permeable central zone, the sheet metal jacket projects beyond the gas outlet side of the gas purging plug.
  • FIG. 1 schematically shows a gas purging device on a brick lining of a bottom of a metallurgical vessel in section.
  • a perforated brick 2 made of refractory, ceramic material is mortared into a lining 1.
  • the perforated brick 2 has a recess 3 for receiving a gas purge brick 4.
  • the depth T of the recess 3 is smaller than the height H of the perforated brick 2.
  • the perforated brick 2 is then provided with a gas-permeable central zone 6 at the base 5 of the recess 3. This is enclosed by a gas-impermeable ring zone 7.
  • the central zone 6 can be porous or can be traversed by capillaries.
  • the perforated brick 2 projects with an area 8 over the inner surface 9 of the brick lining 1.
  • the area 8 thus also projects over the gas purging brick 4 or the base 5.
  • the base 5 is lower than the surface 9 (see FIG. 1). However, it can also lie approximately in the same plane as the surface 9.
  • the gas purging plug 4 inserted into the recess 3 has a gas-impermeable outer part 10 and a porous, gas-permeable inner part 11.
  • a gas connection 12 is connected to this.
  • the porous inner part 11 forms a gas outlet zone 13.
  • the gas-permeable central zone 6 is dimensioned such that it faces the gas outlet zone 13.
  • the gas purging plug 4 is seated in a sheet metal jacket 14. This projects beyond the gas purging plug 4 on its gas outlet side 15 and extends to the bottom 5 of the recess 3. This covers a gap 16 between the sheet metal jacket 14 and the recess 3 with respect to the gas-permeable central zone 6. Such a cover can also be achieved by a circumferential ring edge on the gas outlet side 15.
  • the perforated brick 2 will first wear out in its area 8 which projects above the surface 9. In the area of the central zone 6, the wear will be greater than in the area of the ring zone 7. The area 8 allows wear of the perforated brick 2 that is premature compared to the wear on the surface 9, without this leading to operational disturbances.
  • the lining 1 is worn out to such an extent that the perforated brick 2 can be replaced at the same time as the lining 1 is being repaired.
  • the protruding ring edge of the sheet metal jacket 14 ensures that the melt does not enter the joint 16.
  • the gas purging stone 4 can be replaced on the perforated stone 2.
  • the gas-permeable central zone 6 is shown approximately cylindrical. However, it can also expand from the bottom 5 upwards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Claims (10)

  1. Dispositif d'insufflation de gaz dans un récipient métallurgique avec, insérée dans un revêtement du fond du récipient, une brique percée réfractaire céramique qui reçoit un élément réfractaire céramique d'injection de gaz dont la face de sortie de gaz est protégée par rapport à l'intérieur du récipient, caractérisé par le fait que la brique percée (2) fait saillie à l'intérieur du récipient par rapport à l'élément d'injection de gaz (4) et au revêtement (1) par une partie (8) qui, dans le prolongement de la face de sortie de gaz (15), est perméable au gaz.
  2. Dispositif d'insufflation de gaz selon la revendication 1, caractérisé par le fait que, dans sa partie (8) formant saillie, la brique percée (2) présente une porosité.
  3. Dispositif d'insufflation de gaz selon la revendication 1, caractérisé par le fait que, dans sa partie (8) formant saillie, la brique percée (2) comporte des tubes capillaires.
  4. Dispositif d'insufflation de gaz selon l'une des revendications précédentes, caractérisé par le fait qu'un élément rapporté perméable au gaz est fixé dans la partie (8) formant saillie de la brique percée (2).
  5. Dispositif d'insufflation de gaz selon l'une des revendications précédentes, caractérisé par le fait que la partie (8) formant saillie forme une zone centrale (6) perméable au gaz et une zone annulaire (7) non perméable au gaz.
  6. Dispositif d'insufflation de gaz selon l'une des revendications précédentes, caractérisé par le fait que la brique percée (2) n'est perméable au gaz qu'au dessus de la zone (13) de la face de sortie de gaz (15) de l'élément d'injection de gaz (4) par où sort le gaz.
  7. Dispositif d'insufflation de gaz selon l'une des revendications précédentes, caractérisé par le fait qu'un interstice (16) entre l'élément d'injection de gaz (4) et la brique percée (2) est fermé vis-à-vis de la zone centrale (6) perméable au gaz de la brique percée (2).
  8. Dispositif d'insufflation de gaz selon l'une des revendications précédentes, caractérisé par le fait que la face de sortie de gaz (15) de l'élément d'injection de gaz (4) à l'intérieur de la brique percée (2) est située au-dessous de la surface (9) du revêtement (1).
  9. Dispositif d'insufflation de gaz selon l'une des revendications précédentes, caractérisé par le fait que la hauteur (H) de la brique percée (2) est supérieure à la profondeur (T) de l'évidement (3) de la dite brique (2) destiné à recevoir l'élément d'injection de gaz (4), la brique percée (2) étant perméable au gaz au niveau du fond (5) de son évidement (3).
  10. Dispositif d'insufflation de gaz selon l'une des revendications précédentes, caractérisé par le fait que l'enveloppe en tôle (14) fait saillie par rapport à la face de sortie de gaz (15) de l'élément d'injection de gaz (4).
EP91105127A 1990-04-24 1991-03-30 Installation pour lavage au gaz avec une brique perforée et une brique pour lavage au gaz Expired - Lifetime EP0458040B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4012952A DE4012952C2 (de) 1990-04-24 1990-04-24 Gasspüleinrichtung an einem metallurgischen Gefäß
DE4012952 1990-04-24

Publications (3)

Publication Number Publication Date
EP0458040A2 EP0458040A2 (fr) 1991-11-27
EP0458040A3 EP0458040A3 (en) 1991-12-11
EP0458040B1 true EP0458040B1 (fr) 1994-09-21

Family

ID=6404931

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91105127A Expired - Lifetime EP0458040B1 (fr) 1990-04-24 1991-03-30 Installation pour lavage au gaz avec une brique perforée et une brique pour lavage au gaz

Country Status (6)

Country Link
US (1) US5127632A (fr)
EP (1) EP0458040B1 (fr)
JP (1) JPH04228512A (fr)
CN (1) CN1022576C (fr)
DE (2) DE4012952C2 (fr)
ZA (1) ZA912675B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4211598C1 (fr) * 1992-04-07 1993-01-14 Oesterreichische Magnesit Ag, Radenthein, Kaernten, At
US5249778A (en) * 1992-04-14 1993-10-05 Dolomitwerke Gmbh Gas stir plug device with visual wear indicator
GB9212953D0 (en) * 1992-06-18 1992-07-29 Foseco Int Purifying molten metal
US6199836B1 (en) * 1998-11-24 2001-03-13 Blasch Precision Ceramics, Inc. Monolithic ceramic gas diffuser for injecting gas into a molten metal bath
RU2230796C1 (ru) * 2003-03-06 2004-06-20 Хлопонин Виктор Николаевич Продувочный элемент агрегата для получения или доводки стали
ES2572686T3 (es) * 2014-05-05 2016-06-01 Refractory Intellectual Property Gmbh & Co. Kg Elemento cerámico refractario de barrido con gas
CN109141016B (zh) * 2018-06-01 2019-08-16 福建麦特新铝业科技有限公司 一种用于熔炼炉炉底通气搅拌的透气塞及金属熔炼炉

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1726983U (de) * 1956-05-29 1956-07-26 Aluminiumwerke Nuernberg G M B Vorrichtung zur gaseinfuehrung in metallische schmelzen.
LU53932A1 (fr) * 1962-08-07 1967-08-21
DE3523171C1 (de) * 1985-06-28 1986-10-30 Didier-Werke Ag, 6200 Wiesbaden Gasspueleinrichtung
DE3633516A1 (de) * 1985-12-04 1987-06-11 Didier Werke Ag Gasspueleinrichtung fuer schmelzenbehaelter
EP0224657B1 (fr) * 1985-12-04 1989-07-19 Didier-Werke Ag Installation pour lavage au gaz dans un récipient contenant des métaux en fusion
DE3833502A1 (de) * 1988-10-01 1990-04-05 Didier Werke Ag Gasspuelstein
DE3901926C1 (en) * 1989-01-24 1989-12-14 Guenter Dr.-Ing. 5102 Wuerselen De Sindelar Gas bubble device

Also Published As

Publication number Publication date
CN1022576C (zh) 1993-10-27
EP0458040A2 (fr) 1991-11-27
ZA912675B (en) 1992-01-29
DE4012952C2 (de) 1995-03-23
DE4012952C1 (fr) 1991-08-22
US5127632A (en) 1992-07-07
JPH04228512A (ja) 1992-08-18
DE59102999D1 (de) 1994-10-27
EP0458040A3 (en) 1991-12-11
CN1056128A (zh) 1991-11-13

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