EP1275452A2 - Buse réfractaire - Google Patents

Buse réfractaire Download PDF

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Publication number
EP1275452A2
EP1275452A2 EP02007617A EP02007617A EP1275452A2 EP 1275452 A2 EP1275452 A2 EP 1275452A2 EP 02007617 A EP02007617 A EP 02007617A EP 02007617 A EP02007617 A EP 02007617A EP 1275452 A2 EP1275452 A2 EP 1275452A2
Authority
EP
European Patent Office
Prior art keywords
flow opening
refractory
flow
delimiting
opening
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Withdrawn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
EP02007617A
Other languages
German (de)
English (en)
Other versions
EP1275452A3 (fr
Inventor
Chris Hallam
Martin Kendall
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.)
RHI AG
Original Assignee
Heraeus Electro Nite International NV
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 claimed from DE10150032A external-priority patent/DE10150032C2/de
Application filed by Heraeus Electro Nite International NV filed Critical Heraeus Electro Nite International NV
Publication of EP1275452A2 publication Critical patent/EP1275452A2/fr
Publication of EP1275452A3 publication Critical patent/EP1275452A3/fr
Withdrawn legal-status Critical Current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
    • B22D41/50—Pouring-nozzles

Definitions

  • the invention relates to a refractory spout for arrangement in or on a wall of a metallurgical vessel, in particular for molten steel, with a flow opening and a flow tube surrounding the flow opening, the flow tube being a has the surface defining the flow opening and an outer housing.
  • Such Facilities are needed in the foundry industry to prevent the leakage of molten metal, in particular Melting steel to allow from melting vessels.
  • Such an arrangement is known for example from GB 2 157 210 A.
  • a so-called Immersion nozzle described, from the molten steel from an upper to a lower Melt vessel flows, with the nozzle or the spout in the melt of the lower vessel dips.
  • This facility includes a gas supply through which gases may flow into the metal can be directed. This may be desirable in many cases However, it is disadvantageous if the properties of the melt are thereby unfavorable and undesirable to be influenced.
  • the flow is regulated with such nozzles either through so-called plug rods, which go from above into the upper opening of the device be sunk in and seal them or release them fully or partially or by Sliders that move laterally and perpendicular to the flow direction across the cross section of the spout be pushed and thereby close it.
  • plug rods which go from above into the upper opening of the device be sunk in and seal them or release them fully or partially or by Sliders that move laterally and perpendicular to the flow direction across the cross section of the spout be pushed and thereby close it.
  • Sliders that move laterally and perpendicular to the flow direction across the cross section of the spout be pushed and thereby close it.
  • Such regulation is relative imprecise and mechanically complex.
  • it usually leads to vortex formation within of the metal flow, causing the flowing metal to adhere to the wall of the spout he follows.
  • the object of the present invention is to provide a spout which is made from the State-of-the-art solutions are improved and leakage is virtually trouble-free ensures the molten metal in another melt vessel.
  • the object is achieved according to the invention for a spout characterized at the outset by characterized in that the flow tube has an upper part and a lower part, that the surface of the upper part delimiting the flow opening is made of a different material is formed as the surface of the lower part delimiting the flow opening and that the lower part is fixed in or on the upper part, the "material" among the material Composition or structure is understood.
  • Another embodiment of the invention is characterized in that the flow tube has an upper part and a lower part, that the lower part is fixed on or in the upper part and that the diameter of the Flow opening in the upper part is larger than in the lower part.
  • Under a flow tube is a Component with a continuous opening understood with preferably cylindrical or conical inner surface or a combination of several surface shapes.
  • the material limiting the throughflow opening and the construction of the upper part are thermally highly insulating at least at temperatures of approximately 1400 ° C. to 1650 ° C. (ie, at steelmaking temperatures), highly pure, chemically inert to steel and highly temperature-resistant and that the material of the lower part delimiting the flow opening is a refractory ceramic.
  • Highly insulating means a material with a thermal conductivity of at most 1.5 Wm -1 K -1
  • high purity means a purity of> 99% by weight and materials with a melting point> 1800 ° C are highly temperature-resistant. This ensures that no heat is extracted from the melt and that it is not contaminated.
  • such a device is long-term stable against the molten metal.
  • the material of the lower part delimiting the throughflow opening is aluminum oxide or zirconium dioxide with a preferably dense surface delimiting the throughflow opening
  • the material of the upper part delimiting the throughflow opening is made of aluminum oxide balls, hollow balls made of refractory oxides, foam ceramic or fiber material or is formed from a dense material, backfilled with at least one of the aforementioned materials, or from a mixture of the aforementioned materials.
  • the surface of the material should expediently be tight in the area of the flow opening, in particular in the upper part, and the material itself or the filling with it can be porous.
  • the material of the upper part delimiting the passage opening can also consist essentially of a be formed from alumina and graphite mixture. As material for that Mullite, zirconia or calcium oxide can also be used.
  • the housing is made of metal, in particular steel, ceramic or another fireproof material formed to ensure high strength. In particular a steel case prevents unwanted gas passage.
  • the material of the lower part delimiting the passage opening is expediently one Surround the heater at least partially to allow preheating of the spout and thus prevent thermal stresses or an adherence-free flow support.
  • the heater is advantageously made of at least one material from the group Molybdenum, carbon, nickel-chromium, iron-chromium-aluminum are formed. Between heater and A thermally highly insulating material is advantageously arranged around a housing Avoid heat flow to the outside as much as possible. It is advantageous that the diameter the flow opening in the lower part is smaller than the diameter of the flow opening in Upper part to those already described above with regard to the second embodiment of the invention To gain benefits.
  • the drawing shows a schematic cross-sectional representation of the refractory according to the invention Spout.
  • a vessel containing molten steel is arranged above the spout 1, out of the steel melt through the flow opening 2 into a below the spout 1 arranged melt vessel 3 runs.
  • the spout is from one Surround steel housing 4, which has an opening 5 at its lower end, the Diameter is at least as large as the diameter of the lower part 6 of the spout.
  • the lower part 6 of the spout is formed from zirconium dioxide, it has an inner diameter from about 13 to 16 mm.
  • the lower part 6 is of a heater 7 with connections 8 a; 8 b surrounded on the side. Between heater 7 and housing 4 is a thermally highly insulating material 9 arranged to avoid heat flow to the outside.
  • the material of the upper part 10 is, for example, aluminum oxide.
  • the flow opening 2 has in the area of the upper part 10 a larger one than the diameter of the lower part 6 Diameter of about 30 to 40 mm.
  • the flow opening 2 tapers towards the lower part towards a transition region 11 conical.
  • the spout can be closed at its upper end by plug rods or Sliders take place, which either completely close the spout or completely open, so that the disadvantages described above by partial opening and thus taking place Regulation in the arrangement according to the invention is omitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Continuous Casting (AREA)
EP02007617A 2001-07-13 2002-04-04 Buse réfractaire Withdrawn EP1275452A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10133557 2001-07-13
DE10133557 2001-07-13
DE10150032A DE10150032C2 (de) 2001-07-13 2001-10-11 Feuerfester Ausguss
DE10150032 2001-10-11

Publications (2)

Publication Number Publication Date
EP1275452A2 true EP1275452A2 (fr) 2003-01-15
EP1275452A3 EP1275452A3 (fr) 2003-12-10

Family

ID=26009674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02007617A Withdrawn EP1275452A3 (fr) 2001-07-13 2002-04-04 Buse réfractaire

Country Status (7)

Country Link
US (2) US7028868B2 (fr)
EP (1) EP1275452A3 (fr)
JP (1) JP2003112257A (fr)
KR (1) KR100599638B1 (fr)
CN (1) CN1262407C (fr)
BR (1) BR0202673A (fr)
CA (1) CA2387375C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1820586A1 (fr) * 2005-12-20 2007-08-22 Heraeus Electro-Nite International N.V. Buse réfractaire et récipient métallurgique qui en est équipé

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110174240A1 (en) * 2010-01-20 2011-07-21 Alstom Technology Ltd. Controlling variables in boiler pressure vessels
CN105170968B (zh) * 2015-08-26 2018-04-10 中钢集团洛阳耐火材料研究院有限公司 一种浸入式水口

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1493389A (fr) * 1966-09-22 1967-08-25 United States Steel Corp Appareil pour la coulée continue de métaux
GB1083262A (en) * 1964-11-24 1967-09-13 United Steel Companies Ltd Methods of and apparatus for use in the continuous casting of steel
GB1144725A (en) * 1966-05-28 1969-03-05 Steuler Industriewerke Gmbh A spout for casting ladles
DE2807123A1 (de) * 1978-02-20 1979-08-30 Didier Werke Ag Bodenausguss fuer metallurgische gefaesse zur aufnahme von stahlschmelze, insbesondere tundish
US4568007A (en) * 1984-01-23 1986-02-04 Vesuvius Crucible Company Refractory shroud for continuous casting
US4776502A (en) * 1984-06-05 1988-10-11 Chamotte- Und Tonwerk Kurt Hagenburger Ceramic spout
EP0379647A2 (fr) * 1988-12-19 1990-08-01 Didier-Werke Ag Busette réfractaire et sa bobine à induction
DE29603426U1 (de) * 1996-02-24 1996-05-02 Didier-Werke Ag, 65189 Wiesbaden Eintauchausguß aus zwei oder mehreren feuerfesten Bauteilen
JPH09314293A (ja) * 1996-05-23 1997-12-09 Kurosaki Refract Co Ltd 連続鋳造用ノズル
JPH10113753A (ja) * 1996-10-09 1998-05-06 Sumitomo Metal Ind Ltd 回転式浸漬ノズル
JPH11156501A (ja) * 1997-11-21 1999-06-15 Nippon Steel Corp 連続鋳造用タンディッシュ及びその製造方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1209598A (en) * 1967-02-14 1970-10-21 Thomas Marshall & Company Loxl An improvement in or relating to refractory nozzles for teeming molten metal
GB1194488A (en) * 1968-05-11 1970-06-10 Dyson Ltd J & J Improvements in Refractory Nozzles
US4386765A (en) * 1979-12-14 1983-06-07 Uss Engineers And Consultants, Inc. Composite moulded refractory articles
JPS5820355A (ja) 1981-07-29 1983-02-05 Hitachi Ltd 細線製造装置
DE3412388C2 (de) 1984-04-03 1986-10-02 Didier-Werke Ag, 6200 Wiesbaden Feuerfester Eintauchausguß
JPH0263656A (ja) * 1988-08-29 1990-03-02 Tokyo Yogyo Co Ltd タンディッシュ摺動ノズル用ガス吹込上ノズル
GB8910639D0 (en) 1989-05-09 1989-06-21 Beecham Group Plc Novel compounds
JP2721775B2 (ja) 1992-11-10 1998-03-04 品川白煉瓦 株式会社 溶鋼鋳造用下ノズル
US5587101A (en) * 1995-09-29 1996-12-24 Tokyo Yogyo Kabushiki Kaisha Gas injection nozzle for pouring liquid metal
DE19654402C1 (de) 1996-12-30 1997-12-11 Didier Werke Ag Induktoranordnung
DE10132575C1 (de) * 2001-07-10 2002-07-04 Heraeus Electro Nite Int Feuerfester Ausguss
DE10204305B4 (de) * 2002-02-01 2004-04-29 Heraeus Electro-Nite International N.V. Feuerfester Ausguss für ein metallurgisches Gefäß

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1083262A (en) * 1964-11-24 1967-09-13 United Steel Companies Ltd Methods of and apparatus for use in the continuous casting of steel
GB1144725A (en) * 1966-05-28 1969-03-05 Steuler Industriewerke Gmbh A spout for casting ladles
FR1493389A (fr) * 1966-09-22 1967-08-25 United States Steel Corp Appareil pour la coulée continue de métaux
DE2807123A1 (de) * 1978-02-20 1979-08-30 Didier Werke Ag Bodenausguss fuer metallurgische gefaesse zur aufnahme von stahlschmelze, insbesondere tundish
US4568007A (en) * 1984-01-23 1986-02-04 Vesuvius Crucible Company Refractory shroud for continuous casting
US4776502A (en) * 1984-06-05 1988-10-11 Chamotte- Und Tonwerk Kurt Hagenburger Ceramic spout
EP0379647A2 (fr) * 1988-12-19 1990-08-01 Didier-Werke Ag Busette réfractaire et sa bobine à induction
DE29603426U1 (de) * 1996-02-24 1996-05-02 Didier-Werke Ag, 65189 Wiesbaden Eintauchausguß aus zwei oder mehreren feuerfesten Bauteilen
JPH09314293A (ja) * 1996-05-23 1997-12-09 Kurosaki Refract Co Ltd 連続鋳造用ノズル
JPH10113753A (ja) * 1996-10-09 1998-05-06 Sumitomo Metal Ind Ltd 回転式浸漬ノズル
JPH11156501A (ja) * 1997-11-21 1999-06-15 Nippon Steel Corp 連続鋳造用タンディッシュ及びその製造方法

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 04, 31. März 1998 (1998-03-31) & JP 09 314293 A (KUROSAKI REFRACT CO LTD), 9. Dezember 1997 (1997-12-09) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 10, 31. August 1998 (1998-08-31) & JP 10 113753 A (SUMITOMO METAL IND LTD), 6. Mai 1998 (1998-05-06) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 11, 30. September 1999 (1999-09-30) & JP 11 156501 A (NIPPON STEEL CORP), 15. Juni 1999 (1999-06-15) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1820586A1 (fr) * 2005-12-20 2007-08-22 Heraeus Electro-Nite International N.V. Buse réfractaire et récipient métallurgique qui en est équipé

Also Published As

Publication number Publication date
CA2387375A1 (fr) 2003-01-13
KR100599638B1 (ko) 2006-07-12
US20030011113A1 (en) 2003-01-16
BR0202673A (pt) 2003-05-06
JP2003112257A (ja) 2003-04-15
KR20030007126A (ko) 2003-01-23
EP1275452A3 (fr) 2003-12-10
CN1262407C (zh) 2006-07-05
US20060076720A1 (en) 2006-04-13
CA2387375C (fr) 2009-07-21
US7028868B2 (en) 2006-04-18
CN1411934A (zh) 2003-04-23

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