EP2893992B1 - Gasspül-Element und zugehöriges Gasanschluss-Element - Google Patents

Gasspül-Element und zugehöriges Gasanschluss-Element Download PDF

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Publication number
EP2893992B1
EP2893992B1 EP14150656.8A EP14150656A EP2893992B1 EP 2893992 B1 EP2893992 B1 EP 2893992B1 EP 14150656 A EP14150656 A EP 14150656A EP 2893992 B1 EP2893992 B1 EP 2893992B1
Authority
EP
European Patent Office
Prior art keywords
gas
recess
connection
gas purging
element according
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.)
Not-in-force
Application number
EP14150656.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2893992A1 (de
Inventor
Bernd Trummer
Michael Klikovich
Roman Kulp
Leopold Kneis
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.)
Refractory Intellectual Property GmbH and Co KG
Original Assignee
Refractory Intellectual Property GmbH and Co KG
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
Priority to ES14150656.8T priority Critical patent/ES2563192T3/es
Application filed by Refractory Intellectual Property GmbH and Co KG filed Critical Refractory Intellectual Property GmbH and Co KG
Priority to RS20160054A priority patent/RS54558B1/sr
Priority to PL14150656T priority patent/PL2893992T3/pl
Priority to EP14150656.8A priority patent/EP2893992B1/de
Priority to MX2016005652A priority patent/MX2016005652A/es
Priority to CN201480059884.6A priority patent/CN105658354A/zh
Priority to PCT/EP2014/074261 priority patent/WO2015104079A1/de
Priority to US15/037,717 priority patent/US9879916B2/en
Publication of EP2893992A1 publication Critical patent/EP2893992A1/de
Application granted granted Critical
Publication of EP2893992B1 publication Critical patent/EP2893992B1/de
Priority to HRP20160147TT priority patent/HRP20160147T1/hr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/30—Arrangements for extraction or collection of waste gases; Hoods therefor
    • F27D17/302—Constructional details of ancillary components, e.g. waste gas conduits or seals
    • 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
    • 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
    • C21C5/34—Blowing through the bath
    • 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 element for metallurgical applications, for example for installation in a metallurgical vessel and an associated gas connection element.
  • a gas purging element also called gas purging plug, is used for blowing in gases, if appropriate also gas / solid mixtures, into a melt to be treated, in particular a metallurgical melt.
  • gaseous treatment fluid in a gas purging plug with directed porosity (English: directed porosity) is guided along corresponding channels / slots ( EP 0 609 562 A1 ), in gas purging bricks with so-called undirected porosity along a corresponding irregular pore volume (similar to a sponge).
  • the arrangement of a gas purging plug in the bottom or the wall of a metallurgical vessel can be done in different ways.
  • the gas purging plug is placed in an associated well block.
  • the dishwasher is secured to the metallurgical vessel with a mechanism.
  • the mechanism is opened.
  • An example of this shows the EP 363651 B1 , This dishwasher has at the same time a gas distribution space at the cold end.
  • the gas supply pipe according to EP 609562 A1 is also attached to a plate, which in turn is secured by means of impact anchors in the ceramic part of the gas purging plug.
  • the gas purging plug In order to avoid a diffusion of the gas into the adjacent refractory material, it is for example from the EP 0 148 337 A1 known to form the gas purging plug with a metal jacket.
  • the metal sheet usually runs on the circumference and in the bottom area of the dishwasher.
  • the bottom plate has an opening, which is followed by a gas connection pipe which protrudes freely over the bottom plate. Gas is in the gas connection pipe in the gas permeable ceramic part of the purifier.
  • the gas connection pipe interferes with transport and installation of the dishwasher.
  • the invention has for its object to offer a structurally simple way how the assembly or disassembly of a gas purging plug can be simplified and a loss of gas is minimized.
  • a gas purging plug without sheet metal casing is easy to transport. However, it is very difficult to create a simple and tight connection to a gas source.
  • the dimensional accuracy of the rinser and the associated installation device ( EP 0 363 651 B1 ) must be very high to avoid damage and leaks. This is difficult to realize on an often hot metallurgical vessel.
  • the invention then relates to a gas purging element for metallurgical applications having the features of claim 1.
  • the essential feature is the recess, which has a first portion (functional part) of a detachable, positive connection with a gas connection element.
  • This recess can be formed in different ways, for example as part of one of the following connection constructions: screw connection, bayonet connection, pressure / pressure quick connection, push / turn quick connection. These include clamp connections or snap connections.
  • a gas line for example, simply pressed into the recess and / or rotated until the gas line with the corresponding connecting portion in the recess of the gas purging element receives the desired positive connection. This only takes a few seconds and is also readily possible on a hot metallurgical vessel at any time, possibly also via a manipulator (robot).
  • Each alignment / adjustment, pivoting, additional fastening by a mechanism on the wall of the metallurgical vessel can be omitted.
  • connection techniques An essential feature of the invention and the said connection techniques is that these positive connections are readily carried out as gas-tight connections and solvable. To replace a gas purging, the gas line on reverse Removed (compared to the assembly) and later reused.
  • the compounds mentioned allow a frictional connection between gas purging plug and gas connection element without additional equipment.
  • the depression starting from the lower end face, has at least one of the following geometric shapes: cylinder, cone, truncated cone, prism.
  • the horizontal cross section of the depression (that is to say perpendicular to the main direction of flow of the gas through the flushing element) can accordingly be round, rectangular, polygonal, for example.
  • It may also be a first portion (viewed from the end face of the gas purging of) cylindrical and an adjoining section frustoconical design.
  • the cylindrical part allows a good guidance and fixation, the frustoconical part can be designed as an additional seal.
  • a gas distribution chamber can be formed in the ceramic refractory body.
  • the gas supplied via the gas line can then first flow into the gas distribution chamber and from there through the gas-permeable ceramic sections.
  • an anti-penetration barrier against penetrating molten metal can be formed in the ceramic body.
  • the break-through safeguard may be constructed as an exchangeable component which is connected to a corresponding portion of the gas supply line or to the recess.
  • the portion of the recess which forms the first portion of the connection to the gas connection element can be formed in-situ in the ceramic material (ie consist of ceramic) and / or be an independent (discrete) component.
  • the recess can have a threaded portion formed on the wall side in the ceramic;
  • a sleeve or nut can be used with a corresponding internal thread in the recess and / and glued there.
  • the gas purging element may not be formed with an outer metal shell.
  • the metal sheath may surround the entire spinner (except the top and bottom of the cold end recess), only the bottom of the refractory ceramic body or only the bottom face of the refractory ceramic body (again without the recess portion).
  • the gas purging element may be formed so that no parts / elements protrude beyond the lower end surface.
  • the bubbler is "flat" at the cold end.
  • the lower end face forms the end of the cold end of the flushing element. Every kind of Closure parts, fasteners, bearings or the like, which protrude beyond the floor to the outside, can be dispensed with according to the invention.
  • the second end forms a mating thread for a thread-like portion of the recess of the gas purging element or a portion of a bayonet closure.
  • the first end of the gas connection element can be designed for connection to a (further) gas supply line or be connected directly to a gas source.
  • the gas purging element may be made of metal and / or another material which is stable at the temperatures prevailing when the gas purging element is applied to a metallurgical vessel at its "cold end".
  • the depression in the gas purging element and the corresponding end of the gas connection element form a male part or a female part of an associated positive connection.
  • the recess can also be designed in the manner of an adapter, by means of which the gas connection element is fastened in the gas purging element.
  • connection makes it possible to connect adjacent sections (of the gas supply system and the flushing element) in the flow direction of the gas in a simple manner.
  • the compound also serves to create a largely gas-tight connection. This can be realized, for example, in that corresponding sections of the connection have a corresponding conical / frusto-conical shape and are connected to one another.
  • an additional securing element mechanically secure / fix the adjacent sections in the connection position.
  • the reference numeral 10 describes a frusto-conical gas purging plug, of which only the lower end is shown. From a flat bottom 12, a metal cylinder 14 with internal thread 16 extends into a gas-tight ceramic outer part 18 of the gas purging plug 10.
  • the internal thread 16 thus delimits a cylindrical cavity (recess 20) into which an associated gas connection element 50 (a gas line) can be inserted.
  • the gas line 50 is at its in FIG. 1 illustrated upper, second end 52 formed with a corresponding external thread 54.
  • annular metal plate 22 is fixed (welded), which has a central opening 24 corresponding to the cavity 20 and from the edge of a cylindrical wall 26 toward an upper, not shown end of Gas Series Element protrudes, so that results for the parts 22, 26 a pot-like geometry with a hole in the ground.
  • This "pot” serves to receive a lower end 28 of a gas-permeable ceramic part 30.
  • This part 30 is on the bottom side formed with a central recess 32, so is only marginally on the sheet 22 and peripherally adjacent in the lower portion against the wall 26 and in the section above the gas-impermeable part 18 of the gas purging element 10th
  • a gas connection is created by the gas connection element 50 is connected to a gas source and screwed with its thread 54 on the thread 16 of the gas purging element 10.
  • gas purging process can begin immediately. Gas then flows through the gas connection element 50 (arrow G direction) and thus through the cavity 20 into the gas distribution chamber (formed by the return 32) and further through the open porosity of the gas permeable section 30 (arrow G) until the gas flushes the gas Leaves element 10 via its (not shown) upper end face and enters a corresponding molten metal.
  • the illustrated gas purging plug has a flat bottom 12. Outwardly (in the illustrated functional position: downwards), there are no parts during transport and installation of the gas purging element 10. This is an essential feature of the gas purging element and facilitates the assembly / connection of a gas line (a gas connection element) after installation of the gas purging element in a bottom or wall of a metallurgical melting vessel.
  • this connection is designed as a so-called quick coupling.
  • a "male part” 16 'in the cavity 20 is arranged.
  • the part 16 ' is fixed to the bottom 22 and protrudes down into the cavity 20 and approximately to the bottom 12 of the gas purging element 10.
  • the part 16' has approximately a cylindrical shape with a tapered annular portion 17th
  • a "female part" 54 'of the quick coupling is formed instead of the external thread 54, this part 54' is pot-shaped and has an annular constriction 55, which is designed corresponding to the tapered portion 17 of the part 16 ', so that at Sliding the part 54 'on the part 16', the annular constriction 55 can spring into the tapered portion 17, to which the part 54 'is formed with a certain elasticity.
  • the dimensioning of the cavity 20 must be sufficiently large to accommodate the part 54 and preferably so large that the part 54 'rests with its cylindrical outer surface in alignment with the cylindrical outer wall of the cavity 20 in the assembled state.
  • the bottom of the gas flushing element is a sheet metal floor.
  • FIG. 3 similar to the embodiment according to FIG. 2 , However, the gas purging element 10 and the gas connection element 50 are not connected to one another via a quick coupling, but via a kind of bayonet closure.
  • the part 16 has an L-shaped recess in its peripheral wall, which serves to receive a pin 55 ', which projects perpendicularly from the inner wall of the part 54".
  • the second end of the gas connection element 50 is pushed axially onto the part 16 ", the pin 55 'first extending along the axially extending section of the L-shaped recess Gas connection element 50 relative to the part 16 "rotated so that the pin 55 'enters the horizontal portion of the L-shaped groove and is secured against axial loosening.
  • the gas purging element 10 after FIG. 3 also has a peripheral metal jacket 40 which is connected in a gastight manner to a bottom plate 12, which is interrupted only in the region of the cylinder 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Filtering Materials (AREA)
  • Sampling And Sample Adjustment (AREA)
EP14150656.8A 2014-01-09 2014-01-09 Gasspül-Element und zugehöriges Gasanschluss-Element Not-in-force EP2893992B1 (de)

Priority Applications (9)

Application Number Priority Date Filing Date Title
RS20160054A RS54558B1 (sr) 2014-01-09 2014-01-09 Element za prečišćavanje gasom i odgovarajući element za priključivanje gasa
PL14150656T PL2893992T3 (pl) 2014-01-09 2014-01-09 Element przedmuchiwania gazem i odpowiadający element połączenia gazowego
EP14150656.8A EP2893992B1 (de) 2014-01-09 2014-01-09 Gasspül-Element und zugehöriges Gasanschluss-Element
ES14150656.8T ES2563192T3 (es) 2014-01-09 2014-01-09 Elemento de limpieza con gas y elemento de conexión de gas correspondiente
MX2016005652A MX2016005652A (es) 2014-01-09 2014-11-11 Elemento de limpieza con gas y elemento de conexion de gas correspondiente.
CN201480059884.6A CN105658354A (zh) 2014-01-09 2014-11-11 气体吹扫元件和从属的气体联接元件
PCT/EP2014/074261 WO2015104079A1 (de) 2014-01-09 2014-11-11 Gasspül-element und zugehöriges gasanschluss-element
US15/037,717 US9879916B2 (en) 2014-01-09 2014-11-11 Gas purging element and associated gas connection element
HRP20160147TT HRP20160147T1 (hr) 2014-01-09 2016-02-09 Element za proäśišä†avanje plina i pripadajuä†i plinski prikljuäśni element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14150656.8A EP2893992B1 (de) 2014-01-09 2014-01-09 Gasspül-Element und zugehöriges Gasanschluss-Element

Publications (2)

Publication Number Publication Date
EP2893992A1 EP2893992A1 (de) 2015-07-15
EP2893992B1 true EP2893992B1 (de) 2015-12-30

Family

ID=49920194

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14150656.8A Not-in-force EP2893992B1 (de) 2014-01-09 2014-01-09 Gasspül-Element und zugehöriges Gasanschluss-Element

Country Status (9)

Country Link
US (1) US9879916B2 (es)
EP (1) EP2893992B1 (es)
CN (1) CN105658354A (es)
ES (1) ES2563192T3 (es)
HR (1) HRP20160147T1 (es)
MX (1) MX2016005652A (es)
PL (1) PL2893992T3 (es)
RS (1) RS54558B1 (es)
WO (1) WO2015104079A1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2020006972A (es) 2018-01-29 2020-09-09 Refractory Intellectual Property Gmbh & Co Kg Tapon de purga de gas, sistema de purga de gas, metodo para caracterizacion de un tapon de purga de gas y metodo para purgar un fundido metalico.
LU500076B1 (en) * 2021-04-23 2022-10-24 Exus Refractories Spa Gas purging plug for a metallurgical container

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ206264A (en) 1982-11-23 1986-02-21 Injectall Ltd Apparatus for introducing substance into metal melts
DE3341446C1 (de) 1983-11-17 1985-07-11 Brohltal-Deumag AG für feuerfeste Erzeugnisse, 5401 Urmitz Gasspuelstein fuer metallurgische Gefaesse
CH662963A5 (en) 1984-06-12 1987-11-13 Messer Griesheim Gmbh Method and device for purging a metal melt in a casting ladle
DE3530316A1 (de) * 1985-08-24 1987-03-12 Hattinger Metallbau Gmbh Gasspuelstein, insbesondere fuer schmelzwannen, -tiegel und dgl.
DE3833502A1 (de) 1988-10-01 1990-04-05 Didier Werke Ag Gasspuelstein
DE3833503A1 (de) * 1988-10-01 1990-04-05 Didier Werke Ag Gasspuelstein
DE3833505C1 (es) * 1988-10-01 1990-02-15 Didier-Werke Ag, 6200 Wiesbaden, De
DE3833504A1 (de) * 1988-10-01 1990-04-05 Didier Werke Ag Gasspueleinrichtung
DE4029024C2 (de) 1990-09-13 1999-10-28 Beda Oxygentech Armatur Spülanschlußkupplung
DE9206486U1 (de) * 1991-07-24 1992-07-23 Beck u. Kaltheuner Feuerfeste Erzeugnisse GmbH & Co KG, 5970 Plettenberg Keramischer Spülstein für Stahlbehandlungspfannen
DE9301563U1 (de) * 1993-02-04 1993-03-25 Beck u. Kaltheuner Feuerfeste Erzeugnisse GmbH & Co KG, 5970 Plettenberg Keramischer Spülstein für Stahlbehandlungspfannen
DE4312981C2 (de) * 1993-04-21 1995-02-23 Dyko Industriekeramik Gmbh Spüleinrichtung für metallurgische Gefäße
DE19542446C2 (de) * 1995-11-14 1998-05-28 Doetsch Geb Richard Marie Luis Feuerfeste Formplatten mit Gasführungskanälen
DE19755199C1 (de) * 1997-12-12 1998-11-05 Didier Werke Ag Gasspüleinrichtung
DE19948848C1 (de) 1999-10-08 2000-07-13 Dolomitwerke Gmbh Gasspülstein für metallurgische Gefäße
DE19954918C2 (de) * 1999-11-16 2001-09-20 Veitsch Radex Gmbh Wien Feuerfester keramischer Gasspülstein
DE10305232B3 (de) 2003-02-08 2004-08-05 Refractory Intellectual Property Gmbh & Co.Kg Feuerfester keramischer Gasspülstein

Also Published As

Publication number Publication date
MX2016005652A (es) 2016-09-21
WO2015104079A1 (de) 2015-07-16
US20160290722A1 (en) 2016-10-06
HRP20160147T1 (hr) 2016-03-11
US9879916B2 (en) 2018-01-30
ES2563192T3 (es) 2016-03-11
EP2893992A1 (de) 2015-07-15
RS54558B1 (sr) 2016-06-30
PL2893992T3 (pl) 2016-06-30
CN105658354A (zh) 2016-06-08

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