EP0456001A2 - Installation de barbotage par gaz - Google Patents

Installation de barbotage par gaz Download PDF

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Publication number
EP0456001A2
EP0456001A2 EP91105740A EP91105740A EP0456001A2 EP 0456001 A2 EP0456001 A2 EP 0456001A2 EP 91105740 A EP91105740 A EP 91105740A EP 91105740 A EP91105740 A EP 91105740A EP 0456001 A2 EP0456001 A2 EP 0456001A2
Authority
EP
European Patent Office
Prior art keywords
gas
purging device
cross
gas purging
areas
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Withdrawn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
EP91105740A
Other languages
German (de)
English (en)
Other versions
EP0456001A3 (en
Inventor
Hans Rothfuss
Herbert Metzger
Manfred Winkelmann
Hans Günther Winkler
Jochen Kopia
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 EP0456001A2 publication Critical patent/EP0456001A2/fr
Publication of EP0456001A3 publication Critical patent/EP0456001A3/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/16—Introducing a fluid jet or current into the charge
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/48—Bottoms or tuyéres of converters

Definitions

  • the invention relates to a gas purging device for a metallurgical vessel with a gas-permeable area which is connected to a gas connection on the underside of the gas purging device and extends to the top of the gas purging device.
  • Such gas flushers are known as capillary flushers or labyrinth flushers.
  • the gas-permeable area is connected to a single gas connection.
  • the gas-permeable area is dimensioned such that the amount of gas passing through enters the melt contained in the vessel at a sufficient speed. If the gas flow rate is reduced, as is necessary, for example, for "fine flushing", the speed at which the gas enters the melt also decreases. As a result, the mixing of the melt with the purge gas is significantly impaired.
  • EP 0 221 250 A1 describes a gas purging device in which the gas passages narrow in a nozzle shape. This compensates for the loss of velocity in the gas flow in the gas purging device. If the gas flow is reduced, however, the rate of entry of the gas into the melt also decreases here.
  • the object of the invention is to propose a gas purging device of the type mentioned in the introduction, in which the effective gas passage cross section can be adapted to different, desired gas passage quantities.
  • the above-mentioned object is achieved in a gas purging device of the type mentioned at the outset in that the gas-permeable area is divided into at least two gas-permeable sub-areas and in that each of the sub-areas is connected to its own gas connection on the underside of the gas purging device and extends to the top of the gas purging device.
  • the gas purging device can be adapted to two different gas passage amounts. If the gas passage cross sections of the two partial areas are not the same, the gas purging device can be adapted to three different gas flow rates. Adaptability to three different gas passage quantities can also be achieved by providing three partial areas with gas passage cross sections that are identical to one another.
  • gas purging device should be adaptable to more than three different gas passage quantities, then more gas-permeable partial areas are provided accordingly.
  • the cross-sectional area of the partial area narrows from the bottom to the top. This achieves a certain nozzle effect for the gas flowing through in the respective sub-area.
  • At least one partial area further up has a different cross-sectional shape than below. Wear detection is thus achieved. Because the sub-area shows a different appearance as long as it is not worn out than when it is worn out.
  • a gas purging device in the form of a gas purging cone 1 has a base body 2 made of gas-impermeable, ceramic material. Two gas-permeable sections 3, 4 are embedded in the base body 2.
  • the gas permeability consists either in a structure of the partial areas 3, 4 made of porous, ceramic material or in capillaries in the partial areas 3, 4.
  • Both partial areas 3, 4 extend from the underside 5 of the gas purging cone 1 to the top 6 thereof. They are continuously separated from one another by a central web 7 of the base body 2.
  • Each of the two sub-areas 3, 4 has an upper, circular segment-shaped zone 8 and a lower zone 9. This is triangular in the exemplary embodiment according to FIGS. 1 to 3 and in the exemplary embodiment according to FIGS Figures 4 to 6 rectangular. In each partial area 3, 4, its cross-sectional area narrows from the bottom 5 to the top 6.
  • the cross-sectional area of the partial region 3 in the region of the upper side 6 is larger than that of the partial region 4 in the region of the upper side 6.
  • the cross-sectional areas of the partial regions 3, 4 in the region of the upper side 6 are of the same size.
  • a separate gas connection is provided on the underside 5 of each section 3, 4. This is formed by a gas distribution chamber 10 or 11 and a gas connecting piece 12 or 13 connected to it.
  • the gas connecting pieces 12, 13 are located on a gas feed line 15 via a three-way valve 14.
  • the valve 14 it is sufficient to construct the valve 14 in such a way that it supplies gas either to two partial regions 3, 4 or to one of the two partial regions 3 or 4.
  • the mode of operation of the gas purifier described is approximately as follows: If the three-way valve 14 is set so that the gas supply line 15 to both sections 3, 4 is open, then flushing gas enters the melt of the metallurgical vessel into which the gas purging cone 1 is installed at the top 6 at both sections 3, 4. In this case, a comparatively high gas passage quantity enters the melt, the pressure in the gas feed line 15 ensuring a desired gas outlet velocity at the partial areas 3, 4. So there is a "heavy rinse".
  • valve 14 If the valve 14 is set so that only the portion 4 is subjected to gas, then the outlet cross section of the gas into the melt is further reduced, so that even if the pressure in the gas supply line 15 is further reduced, there is still a sufficiently high inflow velocity. In this case there is a "fine rinse".
  • the gas outlet is concentrated on section 4.
  • the gas outlet velocity is higher when only the partial area 4 is flowed through than when only the partial area 3 is flowed through and higher than when both partial areas 3 , 4 are flowed through.
  • the two partial areas 3, 4 are of the same design. Accordingly, the flow conditions are the same if only one of the two partial areas 3, 4 has gas flowing through it.
  • the image according to FIG. 2 or FIG. 5 can be observed, which is composed of the circle segments of the upper zones 8. If, on the other hand, the gas purge cone 1 is badly worn after a long period of operation, then the image corresponding to FIG. 3 or FIG. 6, which is composed of the triangular shapes or rectangular shapes of the lower zones 9, can be observed. As a result, the wear of the gas purging cone 1 is clearly recognizable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Sampling And Sample Adjustment (AREA)
EP19910105740 1990-05-07 1991-04-11 Device for gas flushing Withdrawn EP0456001A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4014509A DE4014509A1 (de) 1990-05-07 1990-05-07 Gasspueler
DE4014509 1990-05-07

Publications (2)

Publication Number Publication Date
EP0456001A2 true EP0456001A2 (fr) 1991-11-13
EP0456001A3 EP0456001A3 (en) 1992-12-09

Family

ID=6405812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910105740 Withdrawn EP0456001A3 (en) 1990-05-07 1991-04-11 Device for gas flushing

Country Status (7)

Country Link
US (1) US5160478A (fr)
EP (1) EP0456001A3 (fr)
JP (1) JPH04228514A (fr)
KR (1) KR910019711A (fr)
CA (1) CA2041925A1 (fr)
DE (1) DE4014509A1 (fr)
ZA (1) ZA912884B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4406563A1 (de) * 1994-02-23 1995-08-24 Matthias Keuter Düsenrohr für blasende Sauerstoffaufblas-Konverter
DE4410289C1 (de) * 1994-03-25 1995-03-16 Veitsch Radex Ag Gasspüleinrichtung zum wandseitigen Einbau in metallurgische Schmelzgefäße
EP1243361A1 (fr) * 2001-03-19 2002-09-25 Vesuvius Crucible Company Dispositif pour introduire un gaz dans un métal liquide
JP2009046756A (ja) * 2007-08-23 2009-03-05 Tokyo Yogyo Co Ltd ガス吹込みプラグ
WO2024089097A1 (fr) * 2022-10-27 2024-05-02 Refractory Intellectual Property Gmbh & Co. Kg Bouchon de purge de gaz réfractaire et procédé de production d'un bouchon de purge de gaz réfractaire
TW202417144A (zh) * 2022-10-27 2024-05-01 奧地利商瑞法克托瑞智產股份有限公司 耐火氣體淨化塞體
WO2024089098A1 (fr) * 2022-10-27 2024-05-02 Refractory Intellectual Property Gmbh & Co. Kg Bouchon de purge de gaz réfractaire et procédé de régulation de la conduction de gaz vers un bouchon de purge de gaz réfractaire

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0221250A1 (fr) * 1985-10-30 1987-05-13 Didier-Werke Ag Dispositif d'injection pour récipients métallurgiques
DE3634448A1 (de) * 1986-10-09 1988-04-21 Didier Werke Ag Spueleinrichtung
EP0290766A2 (fr) * 1987-05-15 1988-11-17 Radex Deutschland Aktiengesellschaft für feuerfeste Erzeugnisse Brique pour lavage au gaz
EP0325709A2 (fr) * 1988-01-29 1989-08-02 Didier-Werke Ag Brique pour lavage aux gaz

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR90233E (fr) * 1966-06-27 1967-11-03 Air Liquide Perfectionnement aux injecteurs, tuyères et brûleurs pour fours métallurgiques
JPS6046312A (ja) * 1983-08-22 1985-03-13 Harima Refract Co Ltd 多層タイプのポ−ラスプラグ
US5050847A (en) * 1986-07-15 1991-09-24 Flo-Con Systems, Inc. Staged valve multi-hole injection block and method
IN168760B (fr) * 1987-04-10 1991-06-01 Injectall Ltd

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0221250A1 (fr) * 1985-10-30 1987-05-13 Didier-Werke Ag Dispositif d'injection pour récipients métallurgiques
DE3634448A1 (de) * 1986-10-09 1988-04-21 Didier Werke Ag Spueleinrichtung
EP0290766A2 (fr) * 1987-05-15 1988-11-17 Radex Deutschland Aktiengesellschaft für feuerfeste Erzeugnisse Brique pour lavage au gaz
EP0325709A2 (fr) * 1988-01-29 1989-08-02 Didier-Werke Ag Brique pour lavage aux gaz

Also Published As

Publication number Publication date
EP0456001A3 (en) 1992-12-09
US5160478A (en) 1992-11-03
CA2041925A1 (fr) 1991-11-08
ZA912884B (en) 1992-01-29
JPH04228514A (ja) 1992-08-18
KR910019711A (ko) 1991-12-19
DE4014509A1 (de) 1991-11-14

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