EP0364723B1 - Gasspüleinrichtung - Google Patents

Gasspüleinrichtung Download PDF

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Publication number
EP0364723B1
EP0364723B1 EP89116617A EP89116617A EP0364723B1 EP 0364723 B1 EP0364723 B1 EP 0364723B1 EP 89116617 A EP89116617 A EP 89116617A EP 89116617 A EP89116617 A EP 89116617A EP 0364723 B1 EP0364723 B1 EP 0364723B1
Authority
EP
European Patent Office
Prior art keywords
gas flushing
brick
gas
holding device
cover portion
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
EP89116617A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0364723A1 (de
Inventor
Hans Rothfuss
Raimund Brückner
Peter Keutgen
Josef Seeger
Manfred Winkelmann
Herbert Metzger
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
Priority to AT89116617T priority Critical patent/ATE85654T1/de
Publication of EP0364723A1 publication Critical patent/EP0364723A1/de
Application granted granted Critical
Publication of EP0364723B1 publication Critical patent/EP0364723B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • C21C5/30—Regulating or controlling the blowing
    • 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
    • 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
    • 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
    • F27D1/16—Making or repairing linings ; Increasing the durability of linings; Breaking away linings
    • F27D1/1636—Repairing linings by projecting or spraying refractory materials on the lining
    • 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
    • F27D1/16—Making or repairing linings ; Increasing the durability of linings; Breaking away linings
    • F27D1/1626—Making linings by compacting a refractory mass in the space defined by a backing mould or pattern and the furnace wall
    • 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
    • F27D1/16—Making or repairing linings ; Increasing the durability of linings; Breaking away linings
    • F27D2001/1605—Repairing linings
    • F27D2001/1615—Repairing linings through a hole in the casing, e.g. injecting refractory from outside the vessel
    • 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
    • F27D2003/161—Introducing a fluid jet or current into the charge through a porous element

Definitions

  • the invention relates to a gas purging device on a vessel for a metallurgical melt, with a gas purging plug which is inserted into a perforated brick of the vessel, a fastening device being arranged on the outside of the vessel, against which a holding device can be clamped, which in its operating position is against the gas purging plug presses.
  • the fastening-holding device is formed by a bayonet catch. This holds the gas purging plug in the perforated brick via washers. The holding device has no influence on the centering of the gas purging plug in the perforated brick.
  • a pull-out device separate from the fastening / holding device is proposed for pulling the gas flushing plug out of the perforated brick. This is attached to the gas connection piece of the gas purging plug after the bayonet catch is opened.
  • EP 0 137 961 B1 describes a pull-out device for a gas purging plug.
  • the object of the invention is to propose a gas purging device of the type mentioned at the outset, with which the gas purging plug can be inserted centered in the perforated brick, held centered therein and pulled out of the perforated brick.
  • the above object is achieved in a gas purging device of the type mentioned at the outset in that the gas purging plug is held in the center of the holding device and that the holding device can be detached from the fastening device by means of pull-out means, the holding device taking the gas purging plug from the operating position into its maintenance position outside the perforated block .
  • the locking, centering and pulling function is integrated in this device. This simplifies the installation and removal of the gas flushing plug. This simplification makes the maintenance work easier and faster.
  • the holding device has a cover part which lies sealingly on the gas purging plug and on which a gas connecting piece for the gas supply into the gas purging plug is arranged.
  • a gas connecting piece for the gas supply into the gas purging plug is arranged.
  • the gas connecting piece is not firmly connected to the gas purging plug, but rather to the holding device.
  • the cover part seals a gas distribution space provided in the gas purging plug. This simplifies the metal sheathing of the gas purging plug or can be omitted entirely.
  • the gas purging plug In the maintenance position, the gas purging plug only needs to be lifted off the cover part and replaced with a new gas purging plug.
  • the gas connection piece and the cover of the gas distribution space of the gas purging plug, namely the cover part, can be reused as part of the holding device and need not be replaced together with the gas purging plug.
  • a vessel for a metallurgical melt has a bottom 1.
  • the vessel is shown in its tilted position, in which the bottom 1 is approximately vertical.
  • a perforated brick 2 is inserted into the bottom 1.
  • a conical gas purging plug 3 which has a gas-impermeable, fireproof outer part 4 and a gas-permeable, fireproof inner part 5.
  • a cylindrical gas distribution space 6 is formed in the outer part 4 and is open towards the inner part 5 and outwards.
  • the gas purging plug 3 is held centered on a holding device 7.
  • This has a cover part 8, in which a sealing ring 9 is inserted.
  • the sealing ring 9 rests on the end face 10 of the gas purging plug 3.
  • a projection 11 of the cover part 8 protrudes into the gas distribution space 6.
  • a sealing sleeve can also be used, which is inserted into the gas distribution space 6 and is sealingly squeezed by the insertion of the projection 11.
  • a gas connection stub 12 is arranged on the cover part 8 and opens into the gas distribution space 6 through the projection 11.
  • the holding device 7 is releasably attached to a fastening device 13 which is arranged on the outside of the base 1.
  • the fastening device 13 has four pins 14 to 17 (cf. FIG. 2).
  • stops 18 are formed on it, of which only one can be seen in FIG. 1.
  • the pins 14 to 17 are provided with transverse slots 19 of the same size for wedges 20.
  • the wedges 20 are driven into the transverse slots 19 of the two pins 16, 17.
  • the wedges 20 are pulled out of the transverse slots 19 of the pins 16, 17 and driven into the transverse slots 19 of the pins 14, 15.
  • the holding device 7 of the exemplary embodiment according to FIGS. 1 and 2 has a crossmember 21 to which the cover part 8 is fastened.
  • the traverse 21 is provided with two handles 22.
  • bores 23 are formed, with which it is pushed onto the pins 16, 17.
  • the holding device 7 also has a centering ring 24 which surrounds the gas purging plug 3 and is provided with a contact surface 25, the taper of which corresponds to the taper of the gas purging plug 3.
  • the gas purging plug 3 shown has no sheet metal jacket. However, in order to improve the absorption of the forces exerted by the contact surface 25 on the gas purging plug 3, it may be expedient to provide the gas purging plug 3 with a sheet metal jacket at least in the region of the contact surface 25.
  • centering ring 24 On the outside of the centering ring 24, supports 26 assigned to the stops 18 are formed. On the centering ring 24 tabs 28 are welded with holes, with which the centering ring 24 is placed on the pin 14, 15. Handles 29 are also attached to the centering ring 24.
  • the mode of operation of the device according to FIGS. 1 and 2 is approximately as follows:
  • the wedges 20 are pulled out of the transverse slots 19 of the pins 16, 17.
  • the cross member 21 can now be pulled off from the pins 16, 17 together with the cover part 8.
  • the wedges 20 are driven into the transverse slots 19 of the pins 14, 15.
  • the centering ring 24 is moved in the direction of arrow A. He pulls the gas purging plug 3 out of the perforated block 2 by means of its contact surface 25. The worn gas purging plug 3 can then be pulled out of the centering ring 24. A new gas purging plug 3 is then inserted.
  • the contact surface 25 of the centering ring 24 keeps it centered.
  • the centering ring 24 is pushed with its tabs 28 back onto the pins 14, 15.
  • the gas purging plug 3 is pushed into the center of the perforated brick 2. A layer of mortar applied to the outside is not stripped off. Then or even before, the cover part 8 is placed on the end face 10 of the gas purging plug 3 and the cross member 21 on the pins 16, 17. Finally, the wedges 20 are driven back into the transverse slots 19 of the pins 16, 17.
  • the cross member 21 and the centering ring 24 can be releasably connected so that they can be handled together.
  • the fastening device 13 has two pins 30, 31, each pin 30, 31 being provided with two transverse slots 32, 33 for wedges 34.
  • the fastening device 13 is provided with an axis 35 on a support 36 and with a stop 37.
  • the holding device 7 of Figures 3 and 4 has pivoting levers 38 which are pivotally mounted at one end on the axis 35. At the other end of the pivot lever 38, U-profiles 39 are fastened, which engage around the pin 30 or 31 (see FIG. 4). A handle 40 and a counterpart 41 for the stop 37 are fastened to the swivel levers 38.
  • a tubular guide body 42 on which the cover part 8 is fastened is pivotably mounted on the pivot lever 38. Its projection 11 centers the gas purging plug 3 on the cover part 8.
  • the gas purging plug 3 is detachably fastened to the cover part 8 by means of screws 43.
  • a lever 44 acts on the guide body 42 and is pivotably mounted on a further carrier 45 of the fastening device 13.
  • the levers 44, 38 are arranged so that when the gas purging plug 3 is pivoted, it is first pulled out of the perforated block 2 essentially perpendicularly to the level of the perforated brick opening and then pivoted about 90 ° into its maintenance position on an arcuate path. This maintenance position of the gas purging plug 3 is shown in broken lines in FIG.
  • the wedges 34 are pulled out of the transverse slots 32 and driven into the transverse slots 33. As a result, the gas purging plug 3 is released in the perforated brick 2.
  • the holding device 7 is then pulled by means of the handle 40.
  • the gas purging plug 3 initially moves on an essentially linear path perpendicular to the level of the perforated brick opening, so that it does not strike the perforated brick 2.
  • the gas purging plug 3 then pivots on an arcuate path into the maintenance position in which the counterpart 41 of the pivoting lever 38 strikes the stop 37.
  • the gas purging plug 3 is now freely accessible and can be replaced on the cover part 8.
  • the cover part 8 with the new gas purging plug 3 is then pivoted back into the operating position by means of the holding device 7.
  • the gas purging plug 3 enters the perforated brick 2 centered.
  • the wedges 34 are driven into the transverse slots 32 so that the gas purging plug 3 is kept centered in the perforated brick 2.
  • the pivoting device is identical to that of the exemplary embodiment according to FIG. 3.
  • the gas purging plug 3 is not held on the cover part 8 by means of screws, but with a centering ring 46.
  • the centering ring 46 cannot itself be fixed on the fastening device 13.
  • the centering ring 46 is provided with an edge 47 which engages around the cover part 8.
  • the edge 47 and the cover part 8 are designed in the manner of a bayonet lock, so that by rotating the centering ring 46 about the longitudinal axis of the gas purging plug 3, the centering ring 46 is braced with the cover part 8, the contact surface 25 of the centering ring 46 the gas purging plug 3 on its conical Keeps the circumference centered and fixes it on the cover part 8.
  • a commercially available gas purging plug 3 is used. This has a sheet metal jacket 48 and a gas purge tube 49 fixed to it. The gas purging tube 49 protrudes through the guide body 42. Sealing means between the cover part 8 and the gas purging stone 3 are not necessary here.
  • the embodiment according to FIG. 5 can, however, also be used for a gas purging plug, as is shown in the exemplary embodiments according to FIGS. 1 and 3.
  • the gas connecting piece 12 is then formed on the guide body 42 on a flap 57 (see FIG. 6) which is open when a gas purging plug 3 according to FIG. 5 is used and is closed when a gas purging plug 3 according to FIGS. 1, 3 is used .
  • this partial sheet metal jacket can be designed such that it takes over the function of the centering ring 24 or the centering ring 46.
  • the pivoting lever 38 engaging on the guide body 42 and the lever 44 are not shown.
  • the guide body 42 is also mounted, as shown in Figures 3 and 5.
  • a base 50 of a template casing 51 is detachably fastened to the cover part 8 by means of screw bolts 52.
  • the cover part 8 engages with its protrusion 11 in the center of the bottom 50.
  • the outer contour of the template shell 51 corresponds to that of the gas purging plug 3 to be inserted in the perforated brick 2.
  • a mass supply tube 55 is slidably and rotatably mounted on a guide sleeve 54 of the template shell 51. This has a spray head 56 at one end.
  • a flap 57 is pivotally arranged, to which the gas connection piece 12 is fastened. The flap 57 is open when the mass supply pipe 55 is inserted and closed when the gas purging plug 3 is attached to the cover part 8.
  • the mass supply pipe 55 protrudes beyond the flap 57 and is connected there to a mass supply device.
  • a cover plate 58 with a collar 59 is fastened to the mass supply pipe 55 in order to cover the stencil casing 51 with respect to the interior of the vessel.
  • the mode of operation of the device according to FIG. 6 is approximately as follows:
  • the template casing 51 is first attached to the mass supply pipe 55 and by means of the holding device 7 in the above described manner used in the perforated brick 2. Repair material is then supplied to the mass supply pipe 55, which is applied in the vicinity of the stencil casing 51 by means of the spray head 56 to the worn area of the perforated brick 2. Compressed air is supplied to the spray head 56 if necessary for better distribution of the repair compound.
  • the distribution of the repair mass can be controlled by moving and rotating the mass supply pipe 55.
  • the template casing 51 with the mass supply pipe 55 and the spray head 56 is pulled out of the perforated brick 2 by means of the holding device 7, specifically the cover part 8. This is so improved that the gas purging plug 3 subsequently connected to the cover part 8 fits into the perforated brick 2 and is held centered therein.
  • a template jacket corresponding to the template jacket 51 and thus the outer contour of the gas purging brick 3 can be used not only for the targeted repair of a worn perforated brick 2, but also during the creation of the
  • the lining of the vessel can be used to position the perforated brick in the correct position.
  • a template jacket 51 - without a mass feed tube 55 - is fastened to the cover part 8 of the holding device 7 and pivoted into the vessel before the lining of the vessel.
  • the perforated brick 2 is then placed on this template casing 51. This ensures that the perforated brick 2 is correctly aligned from the outset relative to the fastening device 13 arranged on the bottom of the vessel.
  • This stencil cover will be designed as a lost stencil cover that is not necessarily reusable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Vacuum Packaging (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Gas Separation By Absorption (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
EP89116617A 1988-10-01 1989-09-08 Gasspüleinrichtung Expired - Lifetime EP0364723B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89116617T ATE85654T1 (de) 1988-10-01 1989-09-08 Gasspueleinrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3833504A DE3833504A1 (de) 1988-10-01 1988-10-01 Gasspueleinrichtung
DE3833504 1988-10-01

Publications (2)

Publication Number Publication Date
EP0364723A1 EP0364723A1 (de) 1990-04-25
EP0364723B1 true EP0364723B1 (de) 1993-02-10

Family

ID=6364233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89116617A Expired - Lifetime EP0364723B1 (de) 1988-10-01 1989-09-08 Gasspüleinrichtung

Country Status (9)

Country Link
US (2) US5007621A (enrdf_load_stackoverflow)
EP (1) EP0364723B1 (enrdf_load_stackoverflow)
JP (1) JPH02118013A (enrdf_load_stackoverflow)
KR (1) KR0138106B1 (enrdf_load_stackoverflow)
CN (1) CN1015910B (enrdf_load_stackoverflow)
AT (1) ATE85654T1 (enrdf_load_stackoverflow)
DE (2) DE3833504A1 (enrdf_load_stackoverflow)
ES (1) ES2037925T3 (enrdf_load_stackoverflow)
ZA (1) ZA896853B (enrdf_load_stackoverflow)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992000392A1 (de) * 1990-07-02 1992-01-09 Veitscher Magnesitwerke-Actien-Gesellschaft Ausziehvorrichtung für pfannenspülsteine
AT396885B (de) * 1990-09-14 1993-12-27 Veitscher Magnesitwerke Ag Vorrichtung zum einbau und ausbau von spülsteinen für metallurgische gefässe
DE19941639C2 (de) * 1999-08-27 2001-09-13 Mannesmann Ag Gasspüleinrichtung für ein metallurgisches Gefäß
US20060004408A1 (en) * 2001-06-08 2006-01-05 Morris Edward J Method and apparatus for sealing access
KR100829814B1 (ko) * 2001-12-18 2008-05-16 주식회사 포스코 가스 주입 장치
RU2230796C1 (ru) * 2003-03-06 2004-06-20 Хлопонин Виктор Николаевич Продувочный элемент агрегата для получения или доводки стали
DE10360827B3 (de) * 2003-12-23 2005-06-09 Refractory Intellectual Property Gmbh & Co. Kg Halteeinrichtung für Spülelemente
DE102010004958A1 (de) 2010-01-12 2011-07-14 SMS Siemag Aktiengesellschaft, 40237 Spülstein Ein- und Ausbauwerkzeug
EP3106813A1 (de) * 2012-08-27 2016-12-21 Refractory Intellectual Property GmbH & Co. KG Gasspül-element und zugehörige gaszuführ-leitung
PL2893992T3 (pl) * 2014-01-09 2016-06-30 Refractory Intellectual Property Gmbh & Co Kg Element przedmuchiwania gazem i odpowiadający element połączenia gazowego
KR101481057B1 (ko) * 2014-05-15 2015-01-14 삼정전기공업 주식회사 유전위 컴팩트 주상변압기 제조방법
KR20250114351A (ko) 2022-11-25 2025-07-29 베수비우스 그룹, 에스. 에이. 야금 용기에서 가스 퍼지 플러그의 용이한 설치를 위한 가스 퍼지 플러그 및 시스템

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NZ206264A (en) * 1982-11-23 1986-02-21 Injectall Ltd Apparatus for introducing substance into metal melts
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JPS62151507A (ja) * 1985-12-25 1987-07-06 Kobe Steel Ltd 溶鋼鍋のポ−ラスプラグ抜き取り装置
ZW10887A1 (en) * 1986-06-25 1987-10-28 Injectall Ltd Improvements in apparatus for injecting substances into liquids
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GB8703717D0 (en) * 1987-02-18 1987-03-25 Injectall Ltd Injecting gas into metal melts
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Title
TECHNISCHE MITTEILUNGEN 69 Jahrgang, Heft 12, Dezember 1976, Seiten 620-628, DE; M. OBERBACH u.a.: "Feuerfeste Werkstoffe für den Einsatz von Spül- und Trägergasen in der Metallurgie" *

Also Published As

Publication number Publication date
CN1041617A (zh) 1990-04-25
ES2037925T3 (es) 1993-07-01
DE3833504C2 (enrdf_load_stackoverflow) 1990-10-04
US5056762A (en) 1991-10-15
EP0364723A1 (de) 1990-04-25
KR0138106B1 (ko) 1998-07-15
KR900006536A (ko) 1990-05-08
ZA896853B (en) 1990-06-27
CN1015910B (zh) 1992-03-18
JPH02118013A (ja) 1990-05-02
ATE85654T1 (de) 1993-02-15
DE3833504A1 (de) 1990-04-05
US5007621A (en) 1991-04-16
DE58903517D1 (de) 1993-03-25

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