EP0363464A1 - Brique de brassage refractaire et permeable aux gaz - Google Patents

Brique de brassage refractaire et permeable aux gaz

Info

Publication number
EP0363464A1
EP0363464A1 EP89903956A EP89903956A EP0363464A1 EP 0363464 A1 EP0363464 A1 EP 0363464A1 EP 89903956 A EP89903956 A EP 89903956A EP 89903956 A EP89903956 A EP 89903956A EP 0363464 A1 EP0363464 A1 EP 0363464A1
Authority
EP
European Patent Office
Prior art keywords
wire
measuring probe
tube
tip
sink
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.)
Pending
Application number
EP89903956A
Other languages
German (de)
English (en)
Inventor
Rudolf Handler
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.)
Veitscher Magnesitwerke AG
Original Assignee
Veitscher Magnesitwerke 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 Veitscher Magnesitwerke AG filed Critical Veitscher Magnesitwerke AG
Publication of EP0363464A1 publication Critical patent/EP0363464A1/fr
Pending legal-status Critical Current

Links

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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/072—Treatment with gases
    • 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 refractory, gas-permeable sink for a vessel for holding molten metal with at least one measuring probe for indicating the residual stone thickness, the tip of the measuring probe being arranged at a preselected distance from the cold stone end.
  • the gas purging stones can either contain a refractory stone body of high porosity, in which case the gas passage takes place through the open pores between the refractory grains, or they contain a little or non-porous refractory stone body in which slots or channels are formed through which the gas passage takes place . In the latter case, one speaks of gas purging stones with directed porosity.
  • the gas purging stones are generally subject to more rapid wear than the refractory lining that follows on the side.
  • efforts are often made to approximate the lifespan of the gas purging stones to that of the surrounding lining by selecting a particularly wear-resistant refractory material, in many cases it is more economical to accept a single or repeated replacement of the purging stones during a furnace trip of the refractory lining.
  • the sink consists of at least two refractory bodies with different light-emitting capacities, which preferably merge are nested and have separation levels at a certain stone height. If the wear reaches one of these levels, this should be recognizable from the change in the brightness pattern of the light emitted by the hot surface.
  • such optical methods are not very reliable, since a bare sink surface is required for exact observation, but this is usually not available.
  • the sink is provided with electrical conductors which are combined to form a framework of longitudinal conductors and cross conductors which are staggered in height.
  • the display circuit is closed for the unused sink.
  • that electrical conductor melts and is interrupted thereby, to which the molten metal initially approaches in the course of wear.
  • the sink can instead be provided with thermocouples, which extend to different riser heights and can be connected to an electrical display device.
  • the object of the invention is to provide a gas purging plug with a residual strength indicator, which is triggered in a simple and reliable manner by the molten metal even under the harsh operating conditions in practice.
  • the measuring probe comprises a tube and a wire that is movable and biased by a spring, the wire at the tip of the measuring probe is connected to the tube by a detachable connection due to the action of heat or contact with the molten metal and is provided with an optical display device in the part of the measuring probe projecting over the cold stone end.
  • the detachable connection at the tip of the measuring probe can preferably be a soldering or welding point, but it can also be formed by a split pin.
  • the optical display device can be formed by a flag attached to the wire, which projects outwards through a slot in the tube of the measuring probe, or it can be formed by a plate arranged outside the tube and connected to the wire.
  • the material forming the connection between the tube and the wire is melted by increasing the temperature, when using a solder, for example when the temperature reaches about 1000 ° C, or by direct contact of the tip with the molten metal and thereby disconnected.
  • the pre-tensioned wire is now pulled back by the spring and this is made clearly visible by the forward movement of the optical display device.
  • a ceramic part for. B. in the form of a tube or a plate, which is penetrated by the wire.
  • the tube can also be filled with powdered refractory material in which the wire is embedded.
  • FIG. 1 a sink according to the invention with a measuring probe for displaying the Stone residual strength
  • FIGS. 2 to 4 in an enlarged representation three embodiments of the tip area of the measuring probe
  • FIG. 5 a variant of the display area of the measuring probe.
  • the refractory sink 1 is enclosed by a sheet metal casing, consisting of a casing sheet 2 and a base sheet 3, the hot-side, upper end face remaining free for the escape of the purge gas.
  • a gas distribution space 4 is kept free between the cold-side, lower end face of the sink 1 and the base plate 3, for example by arranging some spacers 5.
  • a gas feed pipe 6 is attached to the base plate 3 and opens into the gas distribution space 4.
  • a measuring probe 7 is arranged in the sink 1, the tip of which is located at a predetermined distance from the cold end of the stone.
  • the measuring probe 7 passes through the base plate 3 and the gas distribution space 4, projects with its lower part over the cold end of the stone and is appropriately leaned against the gas supply pipe 6.
  • the measuring probe 7 comprises a tube 8, for example a steel tube of 2 to 5 mm outer diameter and a wall thickness of about 0.5 to 1 mm, and a wire 9, z. B. with 0.5 to 1 mm diameter.
  • the wire 9 is connected to the tube 8 by a connection which can be released as a result of the action of heat or contact with the molten metal. According to the embodiment shown in FIGS.
  • this releasable connection consists in a solder or welding point 10.
  • the wire 9 is prestressed in the tube 8 by a spring which is expediently fastened to the lower end of the tube 8.
  • the embodiment shown in FIG. 1 is a tension spring 12.
  • a flag 14 is attached to the wire 9 as an optical display device and protrudes outward through a slot formed in the tube 8.
  • the molten metal approaches the tip of the measuring probe 7 and causes the soldering or welding point 10 to melt.
  • the connection between the tube 8 of the measuring probe 7 and the wire 9 is released, the wire 9 is pulled down by the tension spring 12, and as a result the flag 14 attached to the wire 9 is also moved downward, which is the signal for this. that the sink has reached the predetermined residual strength.
  • a ceramic part in the form of a ceramic tube 16 is arranged between the upper edge of the tube 8 and the soldering or welding point 10.
  • the releasable connection is formed by a split pin 11.
  • a ceramic part in the form of a ceramic plate 17 is inserted between this split pin 11 and the upper edge of the tube 8.
  • the purpose of the ceramic tube 16 and the ceramic plate 17 is to prevent the wire 9 from being welded to the tube 8 by the molten metal and thus to ensure reliable loosening of the connection formed by the soldering or welding point 10 or the split pin 11.
  • the tube 8, as shown in FIG. 5 can also be filled with a powdered refractory material 18, for example with magnesia flour, in which the wire 9 is embedded.
  • FIG. 5 shows a further embodiment of the display area of the measuring probe 7. Here is used for tensioning the wire 9
  • Compression spring 13 which is arranged between the lower end of the tube 8 and a plate 15 attached to the wire 9.
  • the plate 15 serves as a residual strength indicator, since it is when the connection to the
  • the hole for receiving the measuring probe 7 is expediently drilled in the finished sink block.
  • the measuring probe 7 can also be cast in.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

Une brique de brassage réfractaire et perméable aux gaz (1) pour un récipient recevant du métal en fusion est équipée au moins d'une sonde de mesure (7) pour indiquer la grosseur de résidu de brique et dont la pointe est placée à une distance, choisie auparavant, de l'extrémité froide de la brique. La sonde de mesure (7) contient un petit tube (8) et un fil (9) mobile à l'intérieur, tendu à l'aide d'un ressort (12), le fil (9) étant relié au petit tube (8), à la pointe de la sonde de mesure (7), par un raccordement démontable à la suite d'une action thermique ou d'un contact avec le métal en fusion, par exemple une brasure ou une soudure (10). Dans la partie de la sonde de mesure (7) qui dépasse l'extrémité froide de la brique, le fil (9) est pourvu d'un dispositif indicateur optique, par exemple d'une petite insigne (14). Lorsqu'une certaine grosseur de résidu, déterminée auparavant, est atteinte, la brasure ou soudure (10) se détache par le métal en fusion et le fil (9) avec la petite insigne (14) est tiré vers le bas par le ressort (12).
EP89903956A 1988-04-13 1989-04-13 Brique de brassage refractaire et permeable aux gaz Pending EP0363464A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0095888A AT388936B (de) 1988-04-13 1988-04-13 Feuerfester, gasdurchlaessiger spuelstein
AT958/88 1988-04-13

Publications (1)

Publication Number Publication Date
EP0363464A1 true EP0363464A1 (fr) 1990-04-18

Family

ID=3503736

Family Applications (2)

Application Number Title Priority Date Filing Date
EP89903956A Pending EP0363464A1 (fr) 1988-04-13 1989-04-13 Brique de brassage refractaire et permeable aux gaz
EP89890107A Ceased EP0337982A1 (fr) 1988-04-13 1989-04-13 Brique de brassage réfractaire et perméable aux gaz

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP89890107A Ceased EP0337982A1 (fr) 1988-04-13 1989-04-13 Brique de brassage réfractaire et perméable aux gaz

Country Status (10)

Country Link
US (1) US5007366A (fr)
EP (2) EP0363464A1 (fr)
JP (1) JPH02503806A (fr)
KR (1) KR900700629A (fr)
AT (1) AT388936B (fr)
AU (1) AU608152B2 (fr)
BR (1) BR8906815A (fr)
HU (1) HUT54737A (fr)
WO (1) WO1989009836A1 (fr)
ZA (1) ZA892620B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131756A1 (de) * 1991-09-24 1993-04-01 Plibrico Gmbh Gasspuelstein
DE4223108C1 (en) * 1992-07-14 1993-08-19 Veitscher Magnesitwerke-Actien-Gesellschaft, Wien, At Ceramic distributor element - with at least one gas channel provided with a restrictor
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
US5435528A (en) * 1994-04-12 1995-07-25 Reynolds Metals Company Porous plug structure for aluminum furances
US5573724A (en) * 1994-07-29 1996-11-12 Magneco/Metrel, Inc. Ladle port assembly
US5478053A (en) * 1995-04-10 1995-12-26 North American Refractories Co. Inc. Refractory gas purging device
BR9900824A (pt) * 1999-03-01 2000-03-14 Magnesita S A Sistema de injeção de gases em recipientes contendo metais ou ligas fundidas.
JP3653422B2 (ja) 1999-08-20 2005-05-25 シャープ株式会社 排水処理方法および排水処理装置
DE102013016156A1 (de) 2013-09-30 2015-04-02 Pa-Ha-Ge Feuerfeste Erzeugnisse Gmbh & Co. Kg Spüler und Verfahren zum Messen einer Spülerrestlänge
EP3986639A1 (fr) * 2019-06-18 2022-04-27 Vesuvius Group S.A Système de suivi et d'évaluation de l'état d'éléments réfractaires dans une installation métallurgique
CN119317726A (zh) 2022-04-05 2025-01-14 多格贡投资有限公司 用于生产高纯度铜基合金的设备和方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT324386B (de) * 1972-08-21 1975-08-25 Voest Ag Behalter für schmelzflüssige metalle
AU512607B2 (en) * 1977-02-07 1980-10-16 Exxon Research And Engineering Company Nondestructive erosion indicator
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
AT386072B (de) * 1983-07-18 1988-06-27 Radex Deutschland Ag Feuerfester stein, insbesondere gasspuelstein
US4481809A (en) * 1983-08-29 1984-11-13 Labate M D Method and apparatus for monitoring erosion in gas stirring devices in molten metal ladles
DE3341491C1 (de) * 1983-11-17 1985-07-11 Brohltal-Deumag AG für feuerfeste Erzeugnisse, 5401 Urmitz Gasspuelstein fuer metallurgische Gefaesse
DE3503221A1 (de) * 1985-01-31 1986-08-14 Didier-Werke Ag, 6200 Wiesbaden Feuerfester gasdurchlaessiger stein
DE3523171C1 (de) * 1985-06-28 1986-10-30 Didier-Werke Ag, 6200 Wiesbaden Gasspueleinrichtung
DE3623609C1 (de) * 1986-07-12 1988-01-21 Didier Werke Ag Gasspueleinrichtung
US4741515A (en) * 1986-10-20 1988-05-03 Bethlehem Steel Corporation Apparatus for introducing gas into a metallurgical vessel
IN168760B (fr) * 1987-04-10 1991-06-01 Injectall Ltd
US4744544A (en) * 1987-07-06 1988-05-17 Insul Company, Inc. Refractory erosion visual indicator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8909836A1 *

Also Published As

Publication number Publication date
WO1989009836A1 (fr) 1989-10-19
BR8906815A (pt) 1990-11-20
HUT54737A (en) 1991-03-28
US5007366A (en) 1991-04-16
KR900700629A (ko) 1990-08-16
ZA892620B (en) 1989-12-27
ATA95888A (de) 1989-02-15
AU608152B2 (en) 1991-03-21
EP0337982A1 (fr) 1989-10-18
JPH02503806A (ja) 1990-11-08
AU3369789A (en) 1989-11-03
AT388936B (de) 1989-09-25

Similar Documents

Publication Publication Date Title
EP0363464A1 (fr) Brique de brassage refractaire et permeable aux gaz
DE3207675C2 (fr)
DE3523171C1 (de) Gasspueleinrichtung
DE3424466C2 (fr)
DE3209648C2 (fr)
DE3623609C1 (de) Gasspueleinrichtung
EP0105868A1 (fr) Four métallurgique ou récipient métallurgique
EP0181853A1 (fr) Brique pour lavage au gaz pour fours et récipients métallurgiques
EP0551581B1 (fr) Quenouille pour récipients métallurgique
DE1648273B2 (de) Meßsonde
DE102014114301A1 (de) Vorrichtung und Verfahren zum Öffnen eines Ausgusskanals von metallurgischen Gefäßen
DE1573310B1 (de) Eintauch-Thermoelement
DE2637632A1 (de) Bodenelektrode fuer schmelzoefen
DE2732340A1 (de) Schieberverschluss und verfahren zum betrieb desselben
DE3605536A1 (de) Vorrichtung zum einblasen von gas in eine metallschmelze in einer pfanne
DE3641035C1 (en) Casting ladle for holding molten steel
EP1332813B1 (fr) Buse réfractaire pour récipient métallurgique
DE1055764B (de) Vorrichtung zum Giessen von Metallkoerpern, insbesondere Metallplatten
DE4207881C1 (en) Gas flushing brick for melting vessels - has gas channels slightly inclined to vertical to ensure that gas flow is towards centre of vessel despite non-vertical fitting of brick inside vessel bottom
EP0270518A2 (fr) Poche pour le traitement de matières à haut point de fusion, brique réfractaire de ce revêtement et procédé d'utilisation d'un tel récipient
DE4419811C1 (de) Gasspülstein mit Verschleißanzeige
DE1458810B2 (de) Verfahren zur Herstellung einer Eisen-Silicium-Legierung mit einem Sauerstoffgehalt von etwa 0,0025 %
EP0175675A2 (fr) Chenal de coulée basculant pour le guidage de matière en fusion
DE102013016156A1 (de) Spüler und Verfahren zum Messen einer Spülerrestlänge
DE4223108C1 (en) Ceramic distributor element - with at least one gas channel provided with a restrictor

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

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 19891204

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE FR GB IT LI LU NL SE

XX Miscellaneous (additional remarks)

Free format text: VERFAHREN ABGESCHLOSSEN INFOLGE VERBINDUNG MIT 89890107.9/0337982 (EUROPAEISCHE ANMELDENUMMER/VEROEFFENTLICHUNGSNUMMER) VOM 18.10.90.