EP0679723B1 - Verfahren zum Herstellen einer Gas- und/oder Feststoffblaseinrichtung für metallurgische Gefässe, sowie nach dem Verfahren hergestellte Blaseinrichtung - Google Patents

Verfahren zum Herstellen einer Gas- und/oder Feststoffblaseinrichtung für metallurgische Gefässe, sowie nach dem Verfahren hergestellte Blaseinrichtung Download PDF

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Publication number
EP0679723B1
EP0679723B1 EP95103813A EP95103813A EP0679723B1 EP 0679723 B1 EP0679723 B1 EP 0679723B1 EP 95103813 A EP95103813 A EP 95103813A EP 95103813 A EP95103813 A EP 95103813A EP 0679723 B1 EP0679723 B1 EP 0679723B1
Authority
EP
European Patent Office
Prior art keywords
injection
prefabricated
ceramic
brick
gas
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
EP95103813A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0679723A1 (de
Inventor
Alois Angeler
Harald Kaune
Theo Scheuten
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 EP0679723A1 publication Critical patent/EP0679723A1/de
Application granted granted Critical
Publication of EP0679723B1 publication Critical patent/EP0679723B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/48—Bottoms or tuyéres of converters

Definitions

  • the invention relates to a method for producing a gas and / or Solid blowing device for metallurgical vessels, in particular for Converter, consisting of a ceramic pale stone with pressed in it metallic blowpipes, the ends of which are connected to a metallic base on the stone bottom Perforated plate are attached.
  • the invention further relates to a method manufactured blowing device.
  • Blow devices of this type are known to serve gases and / or Solids of the molten metal in the metallurgical vessel feed.
  • blowing device is for one in US Pat. No. 4,539,043 Converter floor described.
  • a blowing device of the same type is also from the Radex-Rundschau issue 1, 1990, pages 195 to 202, for one Electric oven previously known.
  • the invention has for its object to avoid these disadvantages and a method of manufacturing a gas and / or solid blowing device to propose a simplification of the Manufacturing enables and at the same time, especially in series production, the achievement a blowing performance that is always uniform, both quantitatively and qualitatively brings with it.
  • This object is achieved in that the first Blow tube as a tube bundle in the form of a ring in receiving holes in the perforated plate below Generation of a press fit are inserted, then that of Pipe bundle limited interior with a prefabricated ceramic Inner part is filled in, then the tube bundle attached to the perforated plate with the prefabricated ceramic inner part in a partial press mold filled with ceramic material of the blow stone is inserted, subsequently the press mold full with ceramic material of the blow stone is filled up, and finally the filling of ceramic material together with the tube bundle and the ceramic Inner part is pressed.
  • the assembly consists of the perforated plate with the attached Pipe bundle and the ceramic inner part therein forms a prefabricated insert, the ceramic inner part according to the invention has the task, during the pressing process, the blow tubes in the hold the desired installation position.
  • This has several advantages. On the one hand, this enables the blow tube to be attached to the perforated plate in advance to fix and for this a simpler compared to the usual welding Connection, namely to use an interference fit.
  • the complete Pipe bundle can thus, unlike the previously known blowing stones, in a single operation in the mold together with that in it lying ceramic inner part are inserted.
  • the method according to the invention asks the advantage of a exact positioning of the blowpipe in the blown stone, which, especially when Series production, the prerequisite for this is that the blowing device afterwards can always function properly and precisely in operation.
  • the type and nature of the ceramic material for the pale stone are well known from the general state of the art.
  • the pre-made ceramic inner part that holds the blow tube during the pressing process holds together, is advantageously made of the same ceramic Material made like the rest of the pale stone. According to the invention it is but also possible, depending on the application, the prefabricated ceramic Inner part and the rest of the pale stone made of different ceramic To manufacture materials.
  • the prefabricated ceramic inner part and / or the rest of the pale stone can also in some areas in the blowing direction of the stone from different ceramic materials are produced, for example if you use it better the wear behavior of the blowing stone in its blowing direction Takes into account.
  • the prefabricated ceramic can also be advantageous in terms of production technology Inner part as a core, preferably made of a similar blow stone to manufacture.
  • the invention provides that the perforated plate is inserted into the holes in the perforated plate Ends of the blowpipe is shrunk. Since the blow tube during the Pressing process held immovably by the prefabricated ceramic inner part remain, the shrink connection is sufficient for a perfectly gas-tight attachment the blow tube to the perforated plate.
  • the perforated plate is designed as a front wall of a metallic sleeve, which after inserting the Tube bundle in the press mold and filling the same with the ceramic Material of the blowing stone overleaf entirely of the ceramic material of the blowing stone is enclosed. In this way it is possible to fill the cavity metallic sleeve as a gas distribution chamber lying in the blown stone to use.
  • the perforated plate with a circular ring is provided by receiving holes for the blowpipes, and that prefabricated ceramic inner part is cylindrical.
  • the perforated plate can also within the scope of the invention with a polygonal ring of Be receiving holes for the blowpipes, then the prefabricated ceramic inner part is prismatic.
  • the invention also provides that the prefabricated ceramic inner part overleaf against the blowpipe fits tightly along the entire length of the pipe. If necessary, the prefabricated Be provided on the inside with grooves receiving the blowpipes.
  • blowpipes can be used to achieve the best possible blowing effect be wound helically in the blowing direction.
  • blow tubes advantageously have a circular flow channel on, but can also, for example, an elongated, preferably oval Have flow channel.
  • the metallic Sleeve has an end wall forming the perforated plate and with at both ends Flanges as anchoring elements for anchoring the metallic sleeve is provided in the ceramic pale stone.
  • the invention also provides for the blow stone to be optionally provided with several side by side tube bundles with the associated prefabricated ceramic inner parts. In this way it is possible to Blowing properties and the blowing performance of the blowing stone from case to case to change the respective requirements within wide limits.
  • the blowing device consists of a Ceramic blowing stone 1 with metallic pressed in Blow tube 2, the ends 3 on the stone bottom side on a metallic Perforated plate 4 are attached.
  • the latter is the end wall of a metal sleeve 5 with flanges 6, which are used as anchoring elements Anchor the sleeve 5 in the blow stone 1 serve.
  • To attach the tube 2 on the perforated plate 4 is a circular ring in this provided by receiving holes 7, in the stone floor side Tubes 2 are inserted to form a press fit.
  • the Press fit can, for example, by widening the drill ends 3 in the Receiving holes 7 or by shrinking the perforated plate 4 are produced on the pipe ends 3.
  • the interior delimited by the tube bundle 8 is prefabricated ceramic inner part 10 filled out of the same ceramic Material like the rest of the pale stone 1 is made. It is also if necessary, the prefabricated ceramic inner part 10 and remaining pale stone 1 made of different ceramic materials to manufacture. It is also possible to use the prefabricated ceramic Inner part 10 and / or the remaining blowing stone 1 in the blowing direction of the stone in areas, for example in the longitudinal areas h1 and h2 to produce different ceramic materials.
  • the pre-made Ceramic inner part 10 is cylindrical and made of a drill core a similar blow stone 1 is produced, the reverse of the Blow tube 2 fits snugly.
  • the blow tubes 2 have a circular flow channel. she but can also have an elongated, preferably oval, if required Have flow channel.
  • blowing device according to Figures 1 and 2 is according to the invention as follows produced:
  • blow tubes 2 are bundled into the receiving bores 7 of the perforated plate 4 inserted to create a press fit. Then the interior delimited by the tube bundle 8 with the prefabricated ceramic inner part 10 filled.
  • the assembly consisting of the metallic sleeve 5 with the perforated plate 4, and the tube bundle 8 attached to it and the ceramic therein Inner part 10 forms a prefabricated insert which, as can be seen from FIG. 10, then in a partially with the ceramic material 20 of the Blassteins 1 filled mold 21 is inserted. Below is the mold 21 fully filled with the ceramic material 22 of the blowing stone 1. Finally the filling of ceramic material 20, 22 together with the metallic Sleeve 5, the attached tube bundle 8 and the inner part therein 10 pressed until the desired final outer shape of the blowing stone 1 is reached is.
  • the tubes 2 of the tube bundle 8 are prefabricated ceramic inner part 10 according to the invention held together so that they Maintain their exact installation position during the pressing process.
  • the ceramic material of the filling 20, 22 is known to consist of various granular and / or powdered ceramic materials with the appropriate Grain size to which a suitable binder is added.
  • the metallic sleeve 5 is from ceramic material 20, 22 of the blow stone completely enclosed overleaf. In order to extend the usable length of the blowing stone 1, it is also by a corresponding transformation of the mold 21 possible to arrange metallic sleeve 5 outside the blowing stone 1, so that the End face of the inner flange 6 with the bottom Face of the blowing stone 1 is flush.
  • the blowing device according to Figures 3 and 4 differs from that Blowing device according to Figures 1 and 2 essentially only in that instead of the metal sleeve 5, a perforated plate 11 with the receiving bores 7 for tube 2 is present.
  • the perforated plate 11 is on the perforated brick 1 arranged on the outside. But it can also be similar to the metal sleeve 5 in be pressed in the blowing stone 1.
  • a metallic Gas distribution chamber can be connected.
  • the blowing device according to Figures 5 and 6 differs from that Blowing device according to Figures 3 and 4 only in that it instead the perforated plate 11 is a rectangular perforated plate 12 with a polygonal Wreath of receiving holes 5 for the tube 2 is provided. Accordingly, the interior of the tube bundle 13 is prismatic trained prefabricated ceramic inner part 14 filled.
  • the blowing device according to FIGS. 7 and 8 differs from the blowing device according to FIGS. 3 and 4 only by that on the perforated disc 15 two coaxially arranged tube bundles 16, 17 are fixed, the interior and interstices with a cylindrical prefabricated ceramic inner part 18 or a hollow cylindrical prefabricated ceramic inner part 19 are filled. If necessary can create gaps between the two prefabricated ceramic Inner parts 18 and 19 and the tube 2 with a suitable ceramic Material, for example a casting compound to be filled. It is also possible, the prefabricated ceramic inner parts 18, 19 with the tubes 2nd to provide longitudinal grooves.
  • the blowing device according to FIG. 9 differs from the blowing device according to Figures 1 and 2 only in that in the blow stone 1 two sleeves 5a, 5b lying parallel to one another are pressed in with tube bundles 8a, 8b are. Similar multiple arrangements are of course common to all others described variants of the blowing device according to the invention possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Ceramic Products (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP95103813A 1994-04-02 1995-03-16 Verfahren zum Herstellen einer Gas- und/oder Feststoffblaseinrichtung für metallurgische Gefässe, sowie nach dem Verfahren hergestellte Blaseinrichtung Expired - Lifetime EP0679723B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4411538 1994-04-02
DE4411538A DE4411538C1 (de) 1994-04-02 1994-04-02 Verfahren zum Herstellen einer Gas- und/oder Feststoffblaseinrichtung für metallurgische Gefäße, sowie nach dem Verfahren hergestellte Blaseinrichtung

Publications (2)

Publication Number Publication Date
EP0679723A1 EP0679723A1 (de) 1995-11-02
EP0679723B1 true EP0679723B1 (de) 1999-06-16

Family

ID=6514542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95103813A Expired - Lifetime EP0679723B1 (de) 1994-04-02 1995-03-16 Verfahren zum Herstellen einer Gas- und/oder Feststoffblaseinrichtung für metallurgische Gefässe, sowie nach dem Verfahren hergestellte Blaseinrichtung

Country Status (11)

Country Link
US (2) US5533713A (es)
EP (1) EP0679723B1 (es)
JP (1) JPH07286207A (es)
CN (1) CN1110989A (es)
AT (1) ATE181370T1 (es)
AU (1) AU686295B2 (es)
BR (1) BR9501077A (es)
DE (2) DE4411538C1 (es)
MX (1) MX9501621A (es)
RU (1) RU95104942A (es)
SK (1) SK42195A3 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5820816A (en) * 1994-05-10 1998-10-13 Jw Hicks, Inc. Purging device and method of making same
DE29602813U1 (de) * 1996-02-16 1996-04-04 Beck u. Kaltheuner Feuerfeste Erzeugnisse GmbH & Co KG, 58840 Plettenberg Keramischer Spülblock für metallurgische Gefäße
DE19948848C1 (de) * 1999-10-08 2000-07-13 Dolomitwerke Gmbh Gasspülstein für metallurgische Gefäße
US20100143207A1 (en) * 2006-12-04 2010-06-10 Univation Technologies, Llc Semi-conductive coatings for a polyolefin reaction system
US9206487B2 (en) 2014-03-06 2015-12-08 J.W. Hicks, Inc. Molten metal treatment lance
JP6245455B2 (ja) * 2014-06-30 2017-12-13 Ｊｆｅスチール株式会社 転炉の底吹き羽口ブロック

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU567023B2 (en) * 1982-03-29 1987-11-05 Nippon Kokan Kabushiki Kaisha Bottom blown gas blowing nozzle for maltev metal refining furnace and steel refining method using the same
LU85131A1 (de) * 1983-12-12 1985-09-12 Arbed Gasdurchlaessiger baukoerper aus feuerfestem material
JPS60251214A (ja) * 1984-05-29 1985-12-11 Kawasaki Steel Corp 溶解精錬炉または反応容器用ガス吹込みノズル
DE3538498A1 (de) * 1985-10-30 1987-05-07 Didier Werke Ag Einduesvorrichtung fuer metallurgische gefaesse
DE8622452U1 (de) * 1986-08-21 1988-04-07 Thyssen Edelstahlwerke AG, 4000 Düsseldorf Gasspülstein
DE8700662U1 (de) * 1986-12-13 1987-04-23 Burbach & Bender Ohg Esb Schweissbetrieb, 5900 Siegen Gasspülstein für metallurgische Gefäße

Also Published As

Publication number Publication date
DE59506198D1 (de) 1999-07-22
JPH07286207A (ja) 1995-10-31
MX9501621A (es) 1997-02-28
SK42195A3 (en) 1995-12-06
ATE181370T1 (de) 1999-07-15
RU95104942A (ru) 1996-12-27
AU1357795A (en) 1995-10-12
EP0679723A1 (de) 1995-11-02
US5533713A (en) 1996-07-09
DE4411538C1 (de) 1995-12-14
BR9501077A (pt) 1995-10-31
US5547170A (en) 1996-08-20
AU686295B2 (en) 1998-02-05
CN1110989A (zh) 1995-11-01

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