EP0043787A1 - Elément réfractaire perméable aux gaz - Google Patents

Elément réfractaire perméable aux gaz Download PDF

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Publication number
EP0043787A1
EP0043787A1 EP81630045A EP81630045A EP0043787A1 EP 0043787 A1 EP0043787 A1 EP 0043787A1 EP 81630045 A EP81630045 A EP 81630045A EP 81630045 A EP81630045 A EP 81630045A EP 0043787 A1 EP0043787 A1 EP 0043787A1
Authority
EP
European Patent Office
Prior art keywords
gas
metal
metal housing
refractory
stone
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.)
Granted
Application number
EP81630045A
Other languages
German (de)
English (en)
Other versions
EP0043787B1 (fr
Inventor
Bruno Hirschberg
François Schleimer
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.)
Arcelor Luxembourg SA
Original Assignee
Arbed SA
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 Arbed SA filed Critical Arbed SA
Priority to AT81630045T priority Critical patent/ATE7310T1/de
Publication of EP0043787A1 publication Critical patent/EP0043787A1/fr
Application granted granted Critical
Publication of EP0043787B1 publication Critical patent/EP0043787B1/fr
Expired 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
    • C21C5/30—Regulating or controlling the blowing
    • C21C5/34—Blowing through the bath
    • 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 refractory, gas-permeable structures for blowing a gas into a metal treatment vessel through its lining.
  • the oxygen-blowing process used for pig iron freshening which are known under the names "LD”, “LDAC”, “OLP”, “BOF” processes, have recently been improved in metallurgical terms to the effect that secondary gases such as Nitrogen or argon, can be injected in a controlled manner.
  • secondary gases such as Nitrogen or argon
  • the blowing of gas into the metal bath through the vessel bottom or the lining of the vessel walls can also be considered.
  • patent application LU 81.208 the applicant has shown a device for blowing a treatment gas into a metal bath which is intended for insertion into the bottom of a metal treatment vessel and which has a noticeably improved durability compared to the gas-permeable stones known hitherto and allows the desired amounts of gas to be blown in.
  • This apparatus consists essentially in a .85festen gas permeable stone, wherein in the refractory material in the axial direction a plurality of planar, ge - undulated, tubular or wire-shaped metallic members is embedded separation of small wall thickness.
  • this sink consists of sheet steel and segments or strips of refractory material in an alternating arrangement. The passage of gas takes place through the gaps formed within the stone along the metallic separators.
  • the applicant has shown designs and variants of such gas-permeable stones.
  • the sink or the segments forming it are surrounded by a metal housing that is sealed, optionally with an intermediate circuitry of a layer of mortar that bears against the longitudinal surfaces of the stone. The result of this is that the gas only emerges on the fire side of the stone, and furthermore the undesired, because uncontrollable, gas passage along the metal housing is to be prevented.
  • sink stones or the segments forming them are usually produced by pressing refractory material; which may be followed by a stone fire.
  • the sink blocks and therefore also the metal housings surrounding them have a rectangular or square cross section.
  • the metal housing may expand at higher gas pressures, as a result of which the metal housing is lifted off the flushing stone and an undesirable joint is created between the stone and the metal housing.
  • the metal melt pig iron or steel
  • the metal melt can penetrate into this joint and there is a risk that the melt will break through to the cold side of the stone.
  • a refractory, gas-permeable structure in that it consists of a gas-permeable refractory stone which is tightly enclosed by a first metal housing, optionally with the interposition of a mortar layer, in that the first metal housing is arranged at a distance from it is surrounded by the second metal housing, that a refractory, essentially gas-impermeable filling compound is arranged between the two metal housings and that at least one connection and a distribution space for the gas supply are arranged on an end face of the stone.
  • the second, outer metal housing expediently has a cylindrical or frustoconical shape with a circular cross section, which eliminates the risk that it in turn could be deformed. Furthermore, it is now also possible to use it in such applications where flushing blocks with a circular cross section are required, e.g. in pans. Since the first, inner metal housing is now protected from deformations by the gas pressure, it does not bother if it has a rectangular or square cross section, as is desired in the interest of the rational production of the sink.
  • the first, inner metal housing in particular the one adjacent to the gas supply, e.g. cold-side areas, sheet metal plates arranged, e.g. be welded on, which protrude into the refractory filling compound for anchoring.
  • sheet metal plates can also be attached to the second, outer metal housing, which protrude outwards and, when the structure is installed, claw between the gas-permeable structure and the floor stones, for example in a furnace floor in the ramming mass surrounding the structure.
  • the gas-permeable refractory sink located within the first metal housing can be constructed from individual segments lying on one another on longitudinal surfaces, optionally with the interposition of metal supports or inserts.
  • the sink or the segments can be provided with embedded, preferably also pressed-in pairs of sheets, the passage of gas taking place through the gap between the sheets of a pair.
  • the adjacent longitudinal surfaces of the segments can be provided with profiles, such as grooves or shafts, in order to ensure gas permeability to increase the stones.
  • the sink or the segments forming it consist of burned or unfired, e.g. with a carbon carrier, such as tar, pitch, synthetic resin, bound or chemically bound refractory material, such as sintered magnesia, mixtures of magnesia and chrome ore, pre-reacted magnesia-chrome ore sintered grain, high alumina material.
  • a carbon carrier such as tar, pitch, synthetic resin, bound or chemically bound refractory material, such as sintered magnesia, mixtures of magnesia and chrome ore, pre-reacted magnesia-chrome ore sintered grain, high alumina material.
  • refractories are also suitable for the filling compound, which is provided with a chemical or a carbon-containing binder, is introduced as a tamping or casting compound between the two metal housings.
  • Sheet metal e.g. in a thickness between 1 and 3 mm.
  • the structure 1 consists of the actual sink 2, which is enclosed by a first, inner metal housing 3 with a rectangular cross section.
  • a second outer metal housing 4 with a circular cross section is arranged at a distance from it and the space between the two metal housings 3 and 4 is filled with a refractory filling compound 5 .
  • the sink 2 located within the first metal housing 3 consists in the illustrated embodiment of twelve prefabricated segments 7 made of refractory material, which are arranged in two rows of six pieces. Sheet metal plates 8 are inserted into the joints between the segments 7, along which the gas passage takes place.
  • the segments 7 are by means of two strips 9, which are arranged on the inside of the first metal housing 3 and on this are preferably attached by spot welding, spaced from the end face of the first metal housing 3. 'At this end face, which forms the cold side of the structure 1 together with the relevant, lying in a plane surface of the filling material 5, -is tightly welded a plate tenth
  • This plate 10 shown partially broken away in the drawing, is provided with a pipe connection 11, via which the gas can be introduced into the distribution space which remains free between the plate 10 and the end face of the sink 2.
  • a mass of sintered magnesia with the following composition and the following grain structure can serve as the filling mass 5:
  • This mass which is provided, for example, with a chromate binder, can be introduced into the space between the two metal housings 3 and 4 with an addition of 4.5% by weight of water, based on the dry mass, and pounded there.
  • the mass in the space between the two metal housings 3 and 4 can be compressed by means of an internal vibrator introduced into the mass. If the amount of water added is even higher, use as a casting compound would also be possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Building Environments (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Insulated Conductors (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Laminated Bodies (AREA)
EP81630045A 1980-07-09 1981-06-15 Elément réfractaire perméable aux gaz Expired EP0043787B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81630045T ATE7310T1 (de) 1980-07-09 1981-06-15 Feuerfeste, gasdurchlaessige baukoerper.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU82597 1980-07-09
LU82597A LU82597A1 (de) 1980-07-09 1980-07-09 Feuerfester,gasdurchlaessiger baukoerper

Publications (2)

Publication Number Publication Date
EP0043787A1 true EP0043787A1 (fr) 1982-01-13
EP0043787B1 EP0043787B1 (fr) 1984-05-02

Family

ID=19729433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81630045A Expired EP0043787B1 (fr) 1980-07-09 1981-06-15 Elément réfractaire perméable aux gaz

Country Status (12)

Country Link
US (1) US4378106A (fr)
EP (1) EP0043787B1 (fr)
JP (1) JPS5747840A (fr)
AT (1) ATE7310T1 (fr)
AU (1) AU539753B2 (fr)
BR (1) BR8104287A (fr)
CA (1) CA1176460A (fr)
DE (1) DE3163373D1 (fr)
ES (1) ES259133Y (fr)
LU (1) LU82597A1 (fr)
PT (1) PT73305B (fr)
ZA (1) ZA814143B (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0061987A1 (fr) * 1981-03-23 1982-10-06 Arbed S.A. Procédé et dispositif pour le traitement de métaux fondus dans le cadre de la métallurgie
EP0063532A1 (fr) * 1981-04-22 1982-10-27 Arbed S.A. Procédé et dispositif pour la production directe de la fonte liquide
EP0064019A1 (fr) * 1981-04-24 1982-11-03 Arbed S.A. Procédé et installation de désulfuration de fer fondu
FR2516938A1 (fr) * 1981-11-23 1983-05-27 Usinor Dispositif pour l'introduction de gaz dans le bain de metal liquide
EP0097610A1 (fr) * 1982-06-18 1984-01-04 Arbed S.A. Procédé et dispositif pour vidanger des récipients métallurgiques
EP0146079A2 (fr) * 1983-12-12 1985-06-26 Arbed S.A. Pièce réfractaire perméable aux gaz
US4744546A (en) * 1986-02-03 1988-05-17 Voest-Alpine Aktiengesellschaft Flushing arrangement for a metallurgical vessel
DE3716388C1 (de) * 1987-05-15 1988-10-27 Radex Deutschland Ag Gasspuelstein
EP0311785A1 (fr) * 1987-10-14 1989-04-19 PA-HA-GE HÜTTEN UND GIESSEREIBEDARF GMBH & CO. KG Brique de balayage pour récipients métallurgiques

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462576A (en) * 1982-02-24 1984-07-31 Didier-Werke Ag Apparatus for supplying gas through the wall of a metallurgical container
LU84213A1 (fr) * 1982-06-18 1983-11-23 Arbed Dispositif pour vidanger des recipients metallurgiques
DE3318422C2 (de) * 1983-05-20 1985-03-21 Didier-Werke Ag, 6200 Wiesbaden Gasspülanordnung und Verfahren zur Betätigung einer derartigen Anordnung
AT382889B (de) * 1984-03-15 1987-04-27 Voest Alpine Ag Spueleinrichtung fuer ein metallurgisches gefaess
US4754954A (en) * 1986-01-29 1988-07-05 Lazcano Navarro Arturo Refractory device for introducing a gas into a molten metal and a method for making the device
JPH03104067U (fr) * 1990-02-05 1991-10-29
US7192989B2 (en) * 2002-12-20 2007-03-20 Akzo Nobel N.V. Method and expansion device for preparing expanded thermoplastic microspheres
CN106825533A (zh) * 2015-12-03 2017-06-13 刘得顺 一种可修复组合型透气砖的制作方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE498983A (fr) * 1949-11-03 1951-02-15
DE1726983U (de) * 1956-05-29 1956-07-26 Aluminiumwerke Nuernberg G M B Vorrichtung zur gaseinfuehrung in metallische schmelzen.
US3610602A (en) * 1969-10-14 1971-10-05 United States Steel Corp Gas-permeable refractory plug and method
DE1533886B2 (de) * 1966-06-27 1975-04-03 L'air Liquide, S.A. Pour L'etude Et L'exploitation Des Procedes Georges Claude, Paris Vorrichtung zum Einblasen eines Strömungsmittels In einen eine Metallschmelze enthaltenden Behälter
GB1452909A (en) * 1973-10-24 1976-10-20 Electricity Council Injectors for injecting gas into molten metal
US4053147A (en) * 1975-04-24 1977-10-11 Swiss Aluminium Ltd. Device for introduction of gases into reaction vessels containing fluids
LU81208A1 (fr) * 1979-04-25 1980-12-16 Arbed Dispositif pour l'injection de gaz a travers le fond dans le bain metallique contenu dans un recipient d'affinage

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE635868A (fr) * 1962-08-07
JPS52722B2 (fr) * 1973-01-25 1977-01-10
JPS505849U (fr) * 1973-05-14 1975-01-22
SE392479B (sv) * 1974-03-20 1977-03-28 Asea Ab Forma vid metallurgiska konvertrar och smeltugnar
JPS5610433Y2 (fr) * 1976-03-24 1981-03-09
CS241483B2 (en) * 1980-06-25 1986-03-13 Arbed Refractory building body

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE498983A (fr) * 1949-11-03 1951-02-15
DE1726983U (de) * 1956-05-29 1956-07-26 Aluminiumwerke Nuernberg G M B Vorrichtung zur gaseinfuehrung in metallische schmelzen.
DE1533886B2 (de) * 1966-06-27 1975-04-03 L'air Liquide, S.A. Pour L'etude Et L'exploitation Des Procedes Georges Claude, Paris Vorrichtung zum Einblasen eines Strömungsmittels In einen eine Metallschmelze enthaltenden Behälter
US3610602A (en) * 1969-10-14 1971-10-05 United States Steel Corp Gas-permeable refractory plug and method
GB1452909A (en) * 1973-10-24 1976-10-20 Electricity Council Injectors for injecting gas into molten metal
US4053147A (en) * 1975-04-24 1977-10-11 Swiss Aluminium Ltd. Device for introduction of gases into reaction vessels containing fluids
LU81208A1 (fr) * 1979-04-25 1980-12-16 Arbed Dispositif pour l'injection de gaz a travers le fond dans le bain metallique contenu dans un recipient d'affinage

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0061987A1 (fr) * 1981-03-23 1982-10-06 Arbed S.A. Procédé et dispositif pour le traitement de métaux fondus dans le cadre de la métallurgie
EP0063532A1 (fr) * 1981-04-22 1982-10-27 Arbed S.A. Procédé et dispositif pour la production directe de la fonte liquide
EP0064019A1 (fr) * 1981-04-24 1982-11-03 Arbed S.A. Procédé et installation de désulfuration de fer fondu
FR2516938A1 (fr) * 1981-11-23 1983-05-27 Usinor Dispositif pour l'introduction de gaz dans le bain de metal liquide
EP0080403A1 (fr) * 1981-11-23 1983-06-01 UNION SIDERURGIQUE DU NORD ET DE L'EST DE LA FRANCE par abréviation "USINOR" Dispositif pour l'introduction de gaz dans un bain de métal liquide
EP0097610A1 (fr) * 1982-06-18 1984-01-04 Arbed S.A. Procédé et dispositif pour vidanger des récipients métallurgiques
EP0146079A2 (fr) * 1983-12-12 1985-06-26 Arbed S.A. Pièce réfractaire perméable aux gaz
EP0146079A3 (en) * 1983-12-12 1987-01-07 Arbed S.A. Gas-permeable refractory plug
US4744546A (en) * 1986-02-03 1988-05-17 Voest-Alpine Aktiengesellschaft Flushing arrangement for a metallurgical vessel
DE3716388C1 (de) * 1987-05-15 1988-10-27 Radex Deutschland Ag Gasspuelstein
EP0290766A2 (fr) * 1987-05-15 1988-11-17 Radex Deutschland Aktiengesellschaft für feuerfeste Erzeugnisse Brique pour lavage au gaz
EP0290766A3 (en) * 1987-05-15 1989-06-28 Radex Deutschland Aktiengesellschaft Fur Feuerfeste Erzeugnisse Gas flushing plug
EP0311785A1 (fr) * 1987-10-14 1989-04-19 PA-HA-GE HÜTTEN UND GIESSEREIBEDARF GMBH & CO. KG Brique de balayage pour récipients métallurgiques

Also Published As

Publication number Publication date
PT73305B (de) 1982-09-01
AU539753B2 (en) 1984-10-11
JPS5747840A (en) 1982-03-18
CA1176460A (fr) 1984-10-23
AU7264281A (en) 1982-01-14
DE3163373D1 (en) 1984-06-07
US4378106A (en) 1983-03-29
ES259133Y (es) 1982-06-16
ZA814143B (en) 1982-07-28
EP0043787B1 (fr) 1984-05-02
PT73305A (de) 1981-08-01
ATE7310T1 (de) 1984-05-15
LU82597A1 (de) 1982-02-17
ES259133U (es) 1982-01-01
JPH028004B2 (fr) 1990-02-22
BR8104287A (pt) 1982-03-23

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