EP0924009A1 - Dispositif de rinçage par gaz - Google Patents

Dispositif de rinçage par gaz Download PDF

Info

Publication number
EP0924009A1
EP0924009A1 EP98123112A EP98123112A EP0924009A1 EP 0924009 A1 EP0924009 A1 EP 0924009A1 EP 98123112 A EP98123112 A EP 98123112A EP 98123112 A EP98123112 A EP 98123112A EP 0924009 A1 EP0924009 A1 EP 0924009A1
Authority
EP
European Patent Office
Prior art keywords
gas
gas purging
distribution chamber
cover
purging device
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Withdrawn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
EP98123112A
Other languages
German (de)
English (en)
Inventor
Stefan Pischek
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
Publication of EP0924009A1 publication Critical patent/EP0924009A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • C21C5/42—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

Definitions

  • the invention relates to a gas purging device for metallurgical vessels with a refractory, ceramic Gas purging plug and one at the bottom of the gas purging plug arranged gas distribution chamber from which itself gas permeable areas through the gas purging plug to Extend the gas outlet end of the gas purging plug and one with a gas outlet opening in the Gas distribution line opening gas supply line.
  • the gas supply line at a distance in front of the Gas outlet opening has a narrowed cross section.
  • This narrowed cross section is from a closure body covered that towards the narrowed cross section is under pressure (via a compression spring).
  • Will gas through the Gas supply line guided so the gas pressure causes the Closure body pushed away in the direction of flow of the gas becomes.
  • the gas flow through the top Section of the gas supply line towards the Gas purging stone enables.
  • the spring presses the Closure body on the narrowed passage in the Gas supply line and seals the gas supply line accordingly. This is intended to secure against a possible breakthrough of molten metal through the Gas purging stone can be created.
  • the object of the invention is to provide a gas purging device to provide the type mentioned at the outset, for the Case that the gas pressure (operating pressure) is reduced (possibly down to zero), one Metal melt infiltration due to the ferrostatic Pressure of the molten metal prevented as far as possible.
  • the gas purging device should be designed so that it is independent of the type of gas purging plug. Further the gas purging device should be known Embodiments are simplified in construction.
  • the invention is based on the knowledge that it leads to the mentioned purpose not to a complete (total) Sealing the gas supply line or a complete shutdown of the gas path arrives. Rather, it is enough it and has even proven to be particularly beneficial if pressure reduction in the gas purging plug under reduced gas pressure not suddenly, but slowly (gently).
  • the invention proposes in its most general Embodiment a gas purging device for metallurgical Vessels with a refractory, ceramic gas purging plug and one arranged at the bottom of the gas purging stone Gas distribution chamber in front, being from the gas distribution chamber gas permeable areas through the gas purging plug to Extend the gas outlet end of the gas purging plug and the one with a gas outlet opening in the Has gas distribution chamber opening gas supply line, wherein the gas outlet side opening of the gas supply line from one freely movable section of a cover is covered, the under operating pressure of the gas supplied Opening takes off and at reduced gas pressure or without Puts gas pressure on the opening and covers it and the with another section attached to the gas distribution chamber is.
  • a first essential difference from the state of the art is therefore that the cover, like that from the DE 33 41 446 C1 known ball or that from DE 36 23 609 C1 known valve arrangement forms a kind of check valve, is not arranged in the gas supply line, but in the Gas distribution chamber.
  • the cover Under normal gas pressure (in operation), the cover is through the gas flow pushed away so that the gas in the Gas distribution chamber and from there along the gas permeable Pour areas of the gas purging plug into the molten metal can. If the gas pressure is reduced (possibly down to null) the cover lowers slowly or spontaneously and finally covers the gas outlet end again the gas supply line.
  • the cover is at a distance from Gas supply line is attached to the gas distribution chamber. This gives the cover greater flexibility and can thus more easily and precisely to a varying gas pressure react.
  • the freely movable section the cover arranged so that he the gas outlet side Opening of the gas supply line covered laterally with a distance.
  • the gas supply line usually has a round one Cross section and a diameter between 2 and 6 cm.
  • at least the movable section of the Cover also be circular, being Diameter is then, for example, 2 or 3 cm larger than the diameter of the gas supply line, so that the cover the edge of the gas supply line with 1 to 1.5 cm each covered.
  • the cover can be made of a flexible (pliable) material consist.
  • a flexible (pliable) material consist.
  • the cover consist of a metal foil, for example.
  • Such a metal foil or a thin metal sheet can then on at least one bottom section of the gas distribution chamber be welded on.
  • the cover can be very thin.
  • the cover a material thickness of ⁇ 0.5 mm, according to a further embodiment ⁇ 0.2 mm having.
  • Such thin films or sheets flutter "under gas pressure.
  • the flat cover represents the structurally simplest Embodiment of a check valve. It is also inexpensive.
  • the gas purging device described is independent on the type and size of the gas purging plug, for example applicable.
  • the gas purging plug can be a Gas purging plug with directional or non-directional porosity be. Also leave so-called slot washer or joint washer yourself with the described gas distribution chamber (including cover).
  • the Gas distribution chamber has only the task that over the Gas supply line fed gas via a preselectable Distribute the bottom area of the gas purging stone. she needs accordingly also to have only a small height, for example 1 to 5 mm.
  • the gas distribution chamber extends over the entire floor of the gas purging stone extends Measures to provide a defined distance between the bottom of the gas distribution chamber and the bottom of the Ensure gas purging stone.
  • the Bottom area of the gas distribution chamber (outside the cover) have knob-like elevations, the support points or Form contact surfaces for the bottom of the gas purging plug without the free flow of the gas distribution chamber with the adversely affect gas supplied.
  • the Gas distribution chamber has a wall area on the circumference who gets the gas purging plug.
  • the cross section of the gas distribution chamber is correspondingly smaller than the cross section of the bottom of the gas purging plug.
  • the bottom section of the gas purging plug forms the upper boundary of the gas distribution chamber.
  • the gas distribution chamber it is also possible to use the gas distribution chamber as to form a closed "space, the ceiling area of the gas distribution chamber having openings which enable the gas flow into the gas purging plug arranged above it.
  • Gas purging stones are often covered with sheet metal on the circumference.
  • the described gas purging device offers it in one such case, at least the bottom part of the Gas purging stone and the gas distribution chamber with a common To enclose the sheet metal jacket and to design the sheet metal jacket so that it engages under the gas distribution chamber at least at the edge. This defines the gas distribution chamber compared to the Gas purging stone positioned.
  • the gas purging device described can also be adapted to the respective application. So it is easily possible to use a so-called gas purging plug Residual thickness display ".
  • the invention is based on a Embodiment described in more detail.
  • the gas purging device initially comprises a gas purging plug 10.
  • a gas purging plug 10g is indicated in the left part of the figure. This gas purging plug 10g also symbolizes a gas purging plug so-called directed porosity, in which gas channels 12 themselves from the bottom 14 to the upper end face 16 of the gas purging plug 10 extend. It goes without saying that in practice the Gas purging plug 10 over the entire cross section like this section 10g shown is executed.
  • Gas purging plug 10 shown (characterized by the Reference numeral 10u).
  • This is a Gas purging plug with so-called undirected porosity, which of an irregular pore network between floor 14 and End face 16 is crossed. The gas flows accordingly not straight through channels 12, but irregular along the open porosity of the refractory ceramic Matrix material. The same applies here that in practice the entire gas purging plug 10 according to the illustrated Section 10u is designed.
  • the peripheral wall area 18w of the metal plate 18 serves as a support for the bottom 14 of the gas purging plug 10.
  • Both the gas purging plug 10 and the metal plate 18 have a circular cross section, the gas purging plug 10 - As shown - is frustoconical.
  • the gas distribution chamber 20 is coaxial with the central longitudinal axis M. arranged of the gas purging stone 10 and also has one Circular cross section.
  • a bore 24 coaxial to the central longitudinal axis M of the gas purging plug 10 runs from the bottom 22 of the gas distribution chamber 20 a bore 24, the upper portion of a gas supply line 26th forms the rest of the bottom 28 of the metal plate 18 is welded (weld seam 30).
  • the gas supply line 26 is connected to a (not shown) Gas supply connected.
  • the metal plate 18 and the gas purging plug 10 are by a Sheet metal jacket 32 connected to each other, the circumferential extends around the gas purging plug 10 and extends downwards is so that the sheet metal jacket 32 also the metal plate 18th encircles the circumference and also with its free end is bent inwards so that it the metal plate 18th supports on the underside and thus opposite the gas purging plug 10 defined defines.
  • the sheet metal jacket 32 can be in a known manner are applied, for example by shrinking, such as this is described in DE 35 38 421 A1.
  • the metal foil 34 On the bottom 22 of the gas distribution chamber 20 is a 0.2 mm thick metal foil 34 arranged.
  • the metal foil 34 has a first section 36 of round shape, which loosely on the Floor 22 rests and the gas outlet end 26o Gas supply line 26 covers and beyond evenly the gas outlet end 26o is arranged around. From this circular section 36 extends 38, which is at a distance from the gas supply line 26 at the bottom 22 of the Gas distribution chamber 20 is welded (weld 40).
  • Gas supplied in this way is used for metallurgical treatment the molten metal and - depending on the need - from time to time Time is switched off or the gas pressure is reduced.
  • the gas supply is then switched on again, it rises the metal foil 34 again and the gas can - as described - pour into the molten metal.

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)
  • Furnace Charging Or Discharging (AREA)
EP98123112A 1997-12-12 1998-12-03 Dispositif de rinçage par gaz Withdrawn EP0924009A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997155199 DE19755199C1 (de) 1997-12-12 1997-12-12 Gasspüleinrichtung
DE19755199 1997-12-12

Publications (1)

Publication Number Publication Date
EP0924009A1 true EP0924009A1 (fr) 1999-06-23

Family

ID=7851643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98123112A Withdrawn EP0924009A1 (fr) 1997-12-12 1998-12-03 Dispositif de rinçage par gaz

Country Status (2)

Country Link
EP (1) EP0924009A1 (fr)
DE (1) DE19755199C1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009005034U1 (de) 2009-04-06 2009-09-24 Calderys Deutschland Gmbh & Co. Ohg Hochtemperatur-Rückschlagventil für Gasspüler
EP2893992A1 (fr) * 2014-01-09 2015-07-15 Refractory Intellectual Property GmbH & Co. KG Élément de rinçage de gaz et élément de raccord de gaz associé
CN105517728A (zh) * 2014-05-05 2016-04-20 里弗雷克特里知识产权两合公司 耐火陶瓷气体吹扫元件

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20100976U1 (de) * 2001-01-19 2001-12-06 Beck u. Kaltheuner Feuerfeste Erzeugnisse GmbH & Co KG, 58840 Plettenberg Spülstein für metallurgische Gefäße

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0148337A1 (fr) * 1983-11-17 1985-07-17 Radex Deutschland Aktiengesellschaft für feuerfeste Erzeugnisse Brique pour lavage au gaz pour récipients métallurgiques
DE3606322A1 (de) * 1986-02-27 1987-09-03 Burbach & Bender Ohg Gasspuelstein fuer metallurgische gefaesse
US4938459A (en) * 1989-06-08 1990-07-03 Allegheny Ludlum Corporation Mechanically sealed tuyere block
US5573724A (en) * 1994-07-29 1996-11-12 Magneco/Metrel, Inc. Ladle port assembly
DE19625587A1 (de) * 1995-06-27 1997-02-13 Friedhelm Noeh Gas-Spülstein

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3623609C1 (de) * 1986-07-12 1988-01-21 Didier Werke Ag Gasspueleinrichtung
DE3833505C1 (fr) * 1988-10-01 1990-02-15 Didier-Werke Ag, 6200 Wiesbaden, De

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0148337A1 (fr) * 1983-11-17 1985-07-17 Radex Deutschland Aktiengesellschaft für feuerfeste Erzeugnisse Brique pour lavage au gaz pour récipients métallurgiques
DE3606322A1 (de) * 1986-02-27 1987-09-03 Burbach & Bender Ohg Gasspuelstein fuer metallurgische gefaesse
US4938459A (en) * 1989-06-08 1990-07-03 Allegheny Ludlum Corporation Mechanically sealed tuyere block
US5573724A (en) * 1994-07-29 1996-11-12 Magneco/Metrel, Inc. Ladle port assembly
DE19625587A1 (de) * 1995-06-27 1997-02-13 Friedhelm Noeh Gas-Spülstein

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009005034U1 (de) 2009-04-06 2009-09-24 Calderys Deutschland Gmbh & Co. Ohg Hochtemperatur-Rückschlagventil für Gasspüler
EP2893992A1 (fr) * 2014-01-09 2015-07-15 Refractory Intellectual Property GmbH & Co. KG Élément de rinçage de gaz et élément de raccord de gaz associé
WO2015104079A1 (fr) * 2014-01-09 2015-07-16 Refractory Intellectual Property Gmbh & Co. Kg Élément de rinçage par gaz et élément de raccordement de gaz associé
US9879916B2 (en) 2014-01-09 2018-01-30 Refractory Intellectual Property Gmbh & Co. Kg Gas purging element and associated gas connection element
CN105517728A (zh) * 2014-05-05 2016-04-20 里弗雷克特里知识产权两合公司 耐火陶瓷气体吹扫元件
CN105517728B (zh) * 2014-05-05 2017-11-14 里弗雷克特里知识产权两合公司 耐火陶瓷气体吹扫元件

Also Published As

Publication number Publication date
DE19755199C1 (de) 1998-11-05

Similar Documents

Publication Publication Date Title
DE69408626T2 (de) Durchfluss-Steuerventil
DE69423617T2 (de) Membranventil
DE1580148C3 (de) Druckreduzierventil fur hydrau hsche Fahrzeug Bremsanlagen
DE10013423B4 (de) Vakuumdruckeinstellvorrichtung
EP0298512A1 (fr) Unité de filtration avec égalisation de pression
DE4344837A1 (de) Vorrichtung zum Verhindern des Herausfließens von Treibstoff aus einem Fahrzeug-Treibstofftank
DE19755199C1 (de) Gasspüleinrichtung
EP0568005B1 (fr) Soupape de purge pour un réservoir
DE69118403T2 (de) Ventilvorrichtung
DE69901888T2 (de) Entlüftungsvorrichtung für den kraftstofftank eines kraftfahrzeuges
DE69725234T2 (de) Metalldichtung, insbesondere für Armaturvorrichtung
DE1780045B2 (de) Wiegeventil in lastabhaengigen bremskraftreglern, insbesondere fuer schienenfahrzeuge
DE1900360C3 (de) Schaltventil mit berührungsfreier Schaltbewegung der Ventilplatte gegenüber dem Ventilsitz
DE2425309C3 (de) Dreidrucksteuerventil mit Druckbegrenzung für Druckluftbremszylinder, insbesondere von Schienenfahrzeugen
CH615714A5 (fr)
DE69901889T2 (de) Entlüftungsvorrichtung für den kraftstofftank eines kraftfahrzeuges
DE4422540B4 (de) Gasablaßventil für mit Biomasse füllbare Silos
EP0436813A2 (fr) Dispositif de fermeture et/ou de réglage
DE60003222T2 (de) Überdruckventil
CH615642A5 (en) Nebuliser on a liquid container
DE7219252U (de) Hubventil, insbesondere Tellerventil fur Gleitschutzanlagen von Straßenfahr zeugen
DE8906295U1 (de) Vorrichtung zum Auslösen und Unterbrechen des Wasserlaufes bei einem geöffneten Wasserhahn
DE4119602A1 (de) Ueberstroemventil, insbesondere mehrkreisschutzventil einer druckluftbremsanlage von kraftfahrzeugen
EP0200802B1 (fr) Vanne électrique
DE2907489C2 (fr)

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

Kind code of ref document: A1

Designated state(s): AT DE ES FR GB IT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 19991016

AKX Designation fees paid

Free format text: AT DE ES FR GB IT

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20010425

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

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: 20011023