EP0325709B1 - Gasspülstein - Google Patents

Gasspülstein Download PDF

Info

Publication number
EP0325709B1
EP0325709B1 EP88118372A EP88118372A EP0325709B1 EP 0325709 B1 EP0325709 B1 EP 0325709B1 EP 88118372 A EP88118372 A EP 88118372A EP 88118372 A EP88118372 A EP 88118372A EP 0325709 B1 EP0325709 B1 EP 0325709B1
Authority
EP
European Patent Office
Prior art keywords
gas
flushing brick
space
wear
brick
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
EP88118372A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0325709A2 (de
EP0325709A3 (en
Inventor
Manfred Winkelmann
Hans Rothfuss
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 EP0325709A2 publication Critical patent/EP0325709A2/de
Publication of EP0325709A3 publication Critical patent/EP0325709A3/de
Application granted granted Critical
Publication of EP0325709B1 publication Critical patent/EP0325709B1/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
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • 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 plug made of refractory ceramic material, on which the state of wear is visually recognizable and in which an inner body is inserted into an outer body.
  • Such a gas purging plug is described in DE-PS 31 42 989.
  • the two bodies have different gas permeability there.
  • the brightness pattern of the hot gas purging plug is recorded to determine wear.
  • the evaluation of the different light emissions is complex.
  • the choice of materials is limited by the requirement for certain emissivities.
  • the object of the invention is to propose a gas purging plug of the type mentioned in the introduction, in which the recognizability of the state of wear is improved and is largely independent of the material of the gas purging plug.
  • the above object is achieved in the case of a gas purging plug of the type mentioned at the outset in that a gas purging plug is located in the gas purging plug gas-permeable spacing space extends that the spacing space has different geometric shapes in the direction of wear, so that when the gas flows through the spacing space on the surface of the gas purging plug, different geometrical patterns are visible in accordance with the respective state of wear, and that the spacing space between the outer body made of purging stone material and the inner body extends from sink material as a gap.
  • the gap preferably has the same width throughout and / or the spacing space is filled with a gas-permeable material.
  • the aforementioned object can also be achieved in that a gas-permeable spacing space extends in the gas purging plug, that the spacing space has different geometrical shapes in the direction of wear, so that when the gas flows through the spacing space on the surface of the gas purging plug, different geometrical patterns correspond to the respective state of wear are visible, and that the space extends between the outer body, which is formed by a sheet metal casing of the sink, and an upper part of the sink and between this and a lower part of a sink, an insert with permeable material being inserted in the middle of the sink part, which also extends between the opposite levels of the top part of the sink and the bottom part of the sink and there completely fills the space between the top part of the sink and the bottom part of the sink.
  • the spacing space has a different cross-sectional shape in parallel sectional planes of the gas flushing plug. If gas, for example natural gas, is passed through the space, then the shape of the space there becomes visible on the surface of the gas purging plug. Knowing the position of the respective shape, wear can be concluded. Just looking at the shape of the gas outlet shows the respective wear.
  • the shapes can easily be designed so differently that they can be distinguished without any doubt. The recognizability of the state of wear does not require any special material selection for the gas purging plug, so that the invention can be used in a wide variety of gas purging plug assemblies.
  • the space can be designed so that the same gas flow rate flows through it in every state of wear.
  • the gas purging plug according to FIG. 1 has an outer body 1 with a conical outer surface 2. A space is formed inside the body 1. This points sections of different shapes at different heights.
  • the top section 4 is circular cylindrical.
  • the section 5 adjoining this is square-conical.
  • the bottom section 6 is circular cylindrical. There is a transition section 7 between section 6 and section 5.
  • the space is filled with a gas-permeable material.
  • a circular flame pattern is formed on the surface 8. This occurs in the gas passage as long as the wear has not progressed beyond section 4. If the wear has progressed to the area of section 5, a square flame pattern is created. This is an indication of largely advanced wear. In the event of further wear, reaching into the lower section 6, a circular flame pattern occurs again, the diameter of which, however, is considerably larger than the diameter of the section 4.
  • an inner body 9 is inserted into the outer body 1. Between the inner body 9 and the outer body 1, the space 3 is in the form of a gas-permeable joint. The distance between the outer body 1 and the inner body 9 is the same in all areas.
  • the inner body 9 is frustoconical in its upper section 4. Its lower section 6 is cuboid. A corresponding transition section 7 lies between these sections 4, 6.
  • the spacing space 3 or the outer body 1 has a corresponding shape as a hollow shape.
  • FIG. 4b With wear progressing up to the height b, a flame pattern corresponding to FIG. 4b appears in a square basic shape with rounded corners. In the case of wear that has progressed up to the height c, a square-sided flame pattern with pointed corners occurs (cf. FIG. 4c).
  • a sheet metal jacket 10 forms the outer body 1.
  • An upper part 11 and a purging plug sits in the sheet metal jacket 10 as the inner body Lower part of the sink 12.
  • a gas-permeable spacer 3 provided in the gas sink has different geometrical shapes in the direction of wear, so that when the spacer 3 flows through gas, different geometrical patterns are visible on the surface of the gas sink depending on the state of wear.
  • the space 3 extends between the sheet metal jacket 10 and the top part 11 and between this and the bottom part 12, in which an insert made of highly permeable material, for example with a permeability greater than 50 nPerm (50 x 10 ⁇ 13m2), is inserted in the middle.
  • the insert also extends between the opposite levels of the top part 11 and the bottom part 12 and there completely fills the space 3 between the two parts 11 and 12. The latter are tight or weakly permeable compared to the insert made of highly permeable material.
  • the sheet metal jacket 10 is shrunk onto the sink base 12 or tightly connected to it by means of a cement joint 14.
  • FIG. 6 The embodiment of Figure 6 is similar to that of Figure 5.
  • an insert 16 with capillaries is inserted in the middle of the sink base 12 instead of a permeable material insert.
  • Gas channels 17 which run radially outward are provided in a star shape between the lower part 12 of the sink and the upper part 11 of the sink. Accordingly, a dark star is visible when worn up to height b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Gas Burners (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Glass Compositions (AREA)
  • Ceramic Products (AREA)
  • Gas Separation By Absorption (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Cleaning Or Drying Semiconductors (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Colloid Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP88118372A 1988-01-29 1988-11-04 Gasspülstein Expired - Lifetime EP0325709B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3802657A DE3802657C1 (ja) 1988-01-29 1988-01-29
DE3802657 1988-01-29

Publications (3)

Publication Number Publication Date
EP0325709A2 EP0325709A2 (de) 1989-08-02
EP0325709A3 EP0325709A3 (en) 1990-01-24
EP0325709B1 true EP0325709B1 (de) 1995-08-16

Family

ID=6346246

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88118372A Expired - Lifetime EP0325709B1 (de) 1988-01-29 1988-11-04 Gasspülstein

Country Status (11)

Country Link
US (1) US5202079A (ja)
EP (1) EP0325709B1 (ja)
JP (1) JP2597509B2 (ja)
KR (1) KR960008885B1 (ja)
CN (1) CN1014904B (ja)
AT (1) ATE126545T1 (ja)
CA (1) CA1327268C (ja)
DE (2) DE3802657C1 (ja)
ES (1) ES2076936T3 (ja)
FI (1) FI84888C (ja)
ZA (1) ZA89412B (ja)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4014509A1 (de) * 1990-05-07 1991-11-14 Didier Werke Ag Gasspueler
DE4039232C2 (de) * 1990-12-08 1995-01-19 Didier Werke Ag Verfahren zur Herstellung eines Gasspülsteins und Gasspülstein
US5330160A (en) * 1993-05-11 1994-07-19 Martin & Pagenstecher, Inc. Gas stir plug wear indicator including low melting point component and method of use
US5421561A (en) * 1993-11-15 1995-06-06 Martin & Pagenstecher, Inc. Gas stir devices with refractory material erosion depth indicator and method of making the same
DE4406563A1 (de) * 1994-02-23 1995-08-24 Matthias Keuter Düsenrohr für blasende Sauerstoffaufblas-Konverter
DE19504941C2 (de) * 1995-02-15 1998-05-20 Knoellinger Horst Gasspülstein
US5478053A (en) * 1995-04-10 1995-12-26 North American Refractories Co. Inc. Refractory gas purging device
DE19619204C1 (de) * 1996-05-11 1997-05-22 Veitsch Radex Ag Gasspüleinrichtung
BR9900824A (pt) * 1999-03-01 2000-03-14 Magnesita S A Sistema de injeção de gases em recipientes contendo metais ou ligas fundidas.
DE19954918C2 (de) * 1999-11-16 2001-09-20 Veitsch Radex Gmbh Wien Feuerfester keramischer Gasspülstein
JP2009046756A (ja) * 2007-08-23 2009-03-05 Tokyo Yogyo Co Ltd ガス吹込みプラグ
CN101526224B (zh) * 2008-03-04 2010-11-03 苏州博能炉窑科技有限公司 蓄热烧嘴砖
JP6104941B2 (ja) 2012-02-07 2017-03-29 ベスビウス クルーシブル カンパニー ウエアインジケータを備えるガスパージプラグ
KR101819913B1 (ko) * 2016-09-19 2018-01-18 한국내화 주식회사 다단형 포러스 플러그

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU82051A1 (fr) * 1980-01-02 1981-09-10 Arbed Equipement du fond d'un recipient metallurgique pour l'injection de gaz dans un bain de metal
SE8106056L (sv) * 1981-05-27 1982-11-28 Aikoh Co Poros plugg for gjutmetallkerl
FR2518240A1 (fr) * 1981-12-16 1983-06-17 Siderurgie Fse Inst Rech Element refractaire permeable pour l'introduction d'un fluide de brassage dans un bain de metal en fusion
US4462576A (en) * 1982-02-24 1984-07-31 Didier-Werke Ag Apparatus for supplying gas through the wall of a metallurgical container
AT386072B (de) * 1983-07-18 1988-06-27 Radex Deutschland Ag Feuerfester stein, insbesondere gasspuelstein
DE3441223A1 (de) * 1984-11-10 1986-05-15 Lichtenberg Feuerfest GmbH, 5200 Siegburg Spueleinsatz
DE3503221A1 (de) * 1985-01-31 1986-08-14 Didier-Werke Ag, 6200 Wiesbaden Feuerfester gasdurchlaessiger stein
DE3519379A1 (de) * 1985-05-30 1986-12-04 Klöckner-Humboldt-Deutz AG, 5000 Köln Ueberwachung des verschleisses von blasduesen bei metallurgischen verfahren
DE3523171C1 (de) * 1985-06-28 1986-10-30 Didier-Werke Ag, 6200 Wiesbaden Gasspueleinrichtung
DE3526391A1 (de) * 1985-07-24 1987-02-05 Werner Fischer Verfahren und vorrichtung zur feststellung des verschleisses von feuerfest-steinen
DE3538498A1 (de) * 1985-10-30 1987-05-07 Didier Werke Ag Einduesvorrichtung fuer metallurgische gefaesse
FR2590974B1 (fr) * 1985-12-03 1991-01-25 Detalle Pol Dispositif de detection de l'usure de briques d'insufflation de fluides dans des metaux liquides
JPH0343221Y2 (ja) * 1986-11-14 1991-09-10

Also Published As

Publication number Publication date
FI886027A (fi) 1989-07-30
ZA89412B (en) 1989-10-25
US5202079A (en) 1993-04-13
DE3854325D1 (de) 1995-09-21
KR890012118A (ko) 1989-08-24
ATE126545T1 (de) 1995-09-15
EP0325709A2 (de) 1989-08-02
DE3802657C1 (ja) 1989-09-21
KR960008885B1 (ko) 1996-07-05
CA1327268C (en) 1994-03-01
FI84888C (fi) 1992-02-10
EP0325709A3 (en) 1990-01-24
CN1014904B (zh) 1991-11-27
ES2076936T3 (es) 1995-11-16
CN1036522A (zh) 1989-10-25
FI84888B (fi) 1991-10-31
JP2597509B2 (ja) 1997-04-09
JPH01301813A (ja) 1989-12-06

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