EP0065034A1 - Procédé de garnissage de récipients comportant un revêtement réfractaire - Google Patents

Procédé de garnissage de récipients comportant un revêtement réfractaire Download PDF

Info

Publication number
EP0065034A1
EP0065034A1 EP81104400A EP81104400A EP0065034A1 EP 0065034 A1 EP0065034 A1 EP 0065034A1 EP 81104400 A EP81104400 A EP 81104400A EP 81104400 A EP81104400 A EP 81104400A EP 0065034 A1 EP0065034 A1 EP 0065034A1
Authority
EP
European Patent Office
Prior art keywords
wear layer
refractory
organic
lining
tundish
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Withdrawn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
EP81104400A
Other languages
German (de)
English (en)
Inventor
Antonio Cantarin
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.)
Chamotte- und Tonwerk Kurt Hagenburger
Original Assignee
Chamotte- und Tonwerk Kurt Hagenburger
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 Chamotte- und Tonwerk Kurt Hagenburger filed Critical Chamotte- und Tonwerk Kurt Hagenburger
Publication of EP0065034A1 publication Critical patent/EP0065034A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/16—Making or repairing linings ; Increasing the durability of linings; Breaking away linings
    • F27D1/1678—Increasing the durability of linings; Means for protecting
    • F27D1/1684—Increasing the durability of linings; Means for protecting by a special coating applied to the lining
    • 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
    • B22D41/02—Linings
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/14—Discharging devices, e.g. for slag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
    • F27B3/10—Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
    • F27B3/12—Working chambers or casings; Supports therefor
    • F27B3/14—Arrangements of linings

Definitions

  • the invention relates to a method for lining aggregates comprising a permanent feed, which come into contact with liquid melts or with gaseous media at high temperatures, in particular melting furnaces, pans, continuous casting tundishes, channels, molds, etc.
  • the lining or infeed of units coming into contact with liquid melts such as e.g. Melting furnaces, pans, continuous casting tundishes, channels, molds, etc. by walls of refractory stones and / or by pounding or slinging of refractory masses.
  • liquid melts such as e.g. Melting furnaces, pans, continuous casting tundishes, channels, molds, etc.
  • three methods have become common for the delivery of tundishes for the continuous casting process.
  • lubricants were applied to the cooled permanent food by hand spreading it with a trowel.
  • this mass whose raw material base is magnesite or chromium-magnesite, was brought into a spreadable consistency with approx. 10 - 30% water addition.
  • the tundish provided with this delivery was made with the help of several Burners are dried at higher temperatures until they are completely expelled from water and preheated to approx. 800 to 1200 ° C.
  • the preheating once served to harden the binder systems added to the mass, which give the mass sufficient mechanical strength.
  • the so-called cold distributor plate was developed as a third procedure. It is a prefabricated insulating plate that is installed as a single plate in the cooled tundish. Depending on the tundish shape and size, up to 20 different individual formats are required for a single tundish delivery. The advantage of this delivery procedure should be that the heating of the Tundish can be dispensed with entirely. However, it has emerged in the course of operational practice that one cannot do without heating up the tundish. Despite the insulating properties of these cold distributors, there is still an impermissible cooling of the molten initial filling. In addition, the spout and stopper rod must be heated up so that the molten material does not solidify in the spout when poured on.
  • the advantages of the conventional lubricating and spraying compound method described in the delivery of cooled tundishes is that there is no format dependency, ie there are no storage problems.
  • the workload for the tundish delivery is lower compared to the plate process, which results in low labor costs.
  • the delivery itself is monolithic and seamless.
  • the disadvantage of this delivery method is that heating is necessary and adequate insulation is not guaranteed.
  • the solidified remaining bear is difficult to remove after the end of casting and the permanent feed is often due to contact reactions between the protective compound and the permanent feed at the operating temperatures of the Tundishes damaged.
  • the advantage of the known cold distributor plate is the good insulation effect, since only limited heating is necessary, and the quicker removal of the remaining bear.
  • the disadvantage of the cold distributor plate is the much higher work involved in installing the plate and the resulting higher wages.
  • Due to the different formats of the plates complicated storage is necessary.
  • the unavoidable plate breakage increases the storage problems.
  • the plates have to be backfilled with sand in order to allow them to rest well on the permanent feed, there is considerable dust pollution. Wear-prone joints are created between the individual panels, which can run behind despite the grout and thereby damage the permanent lining. The dust nuisance occurs a second time when the tundish is tilted for emptying.
  • the object on which the invention is based is to combine the advantages of cold distributor plates and spray compounds, while avoiding the disadvantages of these two methods described. Furthermore, the object underlying the invention is to improve the durability of such deliveries.
  • a wear layer is applied to the permanent lining, which independently forms a separating layer on the permanent lining side.
  • the separating layer which forms independently under operating temperatures has a porous, non-sintered texture and does not react with the underlying permanent lining, while the protective layer side exposed to the liquid melt forms an erosion-resistant sintered layer.
  • This two-layer design with two functions acting differently in one wear layer was made possible by the coordination according to the invention between insulating and / or sintering means.
  • This wear layer is preferably sprayed, spun, slinged, stamped or cast. Spraying has been advantageous. Stamping or pouring behind a working template proven. This results in smooth, erosion-resistant protective layer surfaces. Spraying behind a reusable template has proven particularly advantageous when the wear layer is introduced. In addition to the fast and therefore efficient delivery, the advantages lie in the fact that it is possible to work with very low water contents.
  • the low water content corresponds to the requirement for the lowest possible hydrogen content in the strand in order to avoid quality errors.
  • the wear layer is preferably a composition with the following constituents: organic fiber materials, inorganic fiber materials, refractory lean agents, organic binders and / or inorganic binders and auxiliaries.
  • Cellulose fibers, paper or ground straw are preferably used as organic fibers, in particular rock wool, basalt wool or kaolin wool as inorganic fiber materials, alumosilicate raw materials and / or alumina-containing materials as refractory lean agents or basic raw materials, as organic binders dextrin, Collex and phenolic resins and as inorganic binders water glass, phosphates, binder clay as well as synthetic plasticizers and wetting agents.
  • the wear layer additionally contains exothermic additives such as carbon carriers, metallic aluminum, magnesium or iron alloys and oxygen carriers such as sodium nitrate or iron oxides.
  • the particular advantage of the method according to the invention is that it has become possible to introduce a protective composition which is both insulating and erosion-resistant at the high application temperatures. So far, there have been no lubricants and spray compounds that share these two properties. The lubricants and spray compounds were resistant to erosion, but they had no insulating effect. The cold distributor plates were insulating, but could only be heated for a short time. With longer heating times, the binding of these plates is destroyed. Then they can no longer be used.
  • the method according to the invention with the layers according to the invention only has advantages which none of the known methods has hitherto.
  • a faster change in mass quality is possible if the steel quality requires for purity reasons to use a higher-quality, basic or neutral infeed instead of an acidic infeed.
  • the layered ceilings can be quickly reinforced, if out For planning reasons, you should quickly switch from single to sequence casting.
  • rapid layer thickness reinforcement is also possible if the casting program requires it for quality reasons, for example when casting aggressive manganese-containing steels.
  • a faster change in mass quality is possible if, in order to be able to desulfurize, a basic feed must be used instead of an acid feed.
  • This new preparation includes: cleaning residual bears, removing the remaining mass or plate, inserting the new one Wear lining in the form of masses or so-called cold distribution plates, as well as the setting of the spouts and plugs.
  • Another important area of application of the method according to the invention is the ladle.
  • it has proven to be very advantageous to introduce the mass according to the invention with a sling or a rotating pan spinner.
  • the advantages that can be achieved are the same as described in detail for tundish delivery.
  • this offset can be used to replace manganese dioxide with acidic, aluminosilicate, alumina or zirconium-containing, chromite-containing raw materials. It has been shown to be beneficial in small tundishes Billet continuous casting plants to use acidic and alumosilicate raw materials and for tundishes for slabs basic, alumina and / or zirconium containing raw materials.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Products (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
EP81104400A 1981-05-16 1981-06-06 Procédé de garnissage de récipients comportant un revêtement réfractaire Withdrawn EP0065034A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3119548A DE3119548C1 (de) 1981-05-16 1981-05-16 Verschleissschicht eines mit Dauerfutter ausgekleideten metallurgischen Gefaesses mit einer zum Dauerfutter hin nicht gesinterten Schicht
DE3119548 1981-05-16

Publications (1)

Publication Number Publication Date
EP0065034A1 true EP0065034A1 (fr) 1982-11-24

Family

ID=6132497

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81104400A Withdrawn EP0065034A1 (fr) 1981-05-16 1981-06-06 Procédé de garnissage de récipients comportant un revêtement réfractaire

Country Status (2)

Country Link
EP (1) EP0065034A1 (fr)
DE (1) DE3119548C1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096985A1 (fr) * 1982-06-28 1983-12-28 Trw Inc. Revêtement de creuset et procédé de fabrication ainsi que son utilisation
EP0135336A3 (fr) * 1983-08-11 1985-08-14 The Babcock & Wilcox Company Planche
US4545568A (en) * 1983-02-24 1985-10-08 Didier-Werke Ag Unfired refractory structural member in the form of a plate for use as an expendable lining of metallurgical vessels
GB2171625A (en) * 1985-02-04 1986-09-03 Morganite Crucible Ltd Duct for molten metal
FR2609020A1 (fr) * 1986-12-30 1988-07-01 Didier Werke Ag Beton refractaire
FR2688211A1 (fr) * 1992-03-08 1993-09-10 Veitscher Magnesitwerke Ag Agent liant et plastifiant pour la fabrication des materiaux a base de carbone, ceramiques, refractaires et materiau realise avec cet agent.
WO1993017984A1 (fr) * 1992-03-06 1993-09-16 Specialty Refractories Inc. Composition refractaire applicable par aspersion
WO1994014727A1 (fr) * 1992-12-22 1994-07-07 Foseco International Limited Compositions refractaires
NL1003885C2 (nl) * 1996-08-27 1998-03-03 Hoogovens Tech Services Goot voor een hete smelt en gootsysteem.
WO2006030319A3 (fr) * 2004-09-14 2006-06-08 North Cape Minerals As Procede de production de revetements d'usure refractaires dans des cuilleres de coulee et des chassis de fonderie et revetements d'usure ainsi obtenus
EP1496312A3 (fr) * 2003-07-11 2006-11-08 HDG Bavaria GmbH Heizkessel & Anlagenbau Chambre de combustion pour un appareil de combustion plus particulièrement destiné aux combustibles solides de type biomasse
CN115466126A (zh) * 2022-08-17 2022-12-13 南京钢铁股份有限公司 一种利于中间包翻包用隔离材料

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011050747U1 (de) 2011-07-15 2012-01-26 Gesellschaft für Förder-, Spritz- und Siloanlagen mbH Vorrichtung zur Erzeugung eines Verschleißfutters in einem Stranggussverteiler

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU36079A1 (fr) *
FR1582587A (fr) * 1967-08-04 1969-10-03
FR2270970A1 (en) * 1974-05-14 1975-12-12 Miki Masamitsu Lining casting ladles esp for cast iron - with compsn contg refractory exothermic metal or alloy, oxidising agent and binder
FR2366902A1 (fr) * 1976-10-08 1978-05-05 Foseco Trading Ag Repartiteur garni de refractaire, notamment pour la coulee continue d'acier
FR2373495A1 (fr) * 1976-12-10 1978-07-07 Didier Werke Ag Pate a base de dolomie granulee pour le revetement de capacites pour acier ou fer a l'etat liquide
DE2716092A1 (de) * 1977-04-12 1978-10-19 Contherm Ind Und Huettenbedarf Auskleidung eines tundishs
FR2393637A1 (fr) * 1977-06-07 1979-01-05 Daussan & Co Composition pour revetement de repartiteur de coulee, procede pour revetir ce dernier et revetement obtenu
DE2846839A1 (de) * 1978-10-27 1980-04-30 Didier Werke Ag Ausguss zum vergiessen von geschmolzenem metall, insbesondere stahlschmelze

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1019636A (en) * 1962-12-17 1966-02-09 Sandvikens Jernverks Ab Heat-insulating compositions and their use
AT301775B (de) * 1966-06-30 1972-09-25 Henri Jean Daussan Auskleidung für Guß- oder gleichartige Formen
US3512414A (en) * 1968-05-23 1970-05-19 Rosemount Eng Co Ltd Slotted airfoil sensor housing
GB1364665A (en) * 1971-12-07 1974-08-29 Foseco Trading Ag Tundishes
CA1016962A (en) * 1973-01-04 1977-09-06 Crawford B. Murton Applying a refractory lining on hot metallurgical containments
GB1454201A (en) * 1974-05-09 1976-11-03 Miki M Method of lining a ladle
JPS51147510A (en) * 1975-06-13 1976-12-17 Nippon Steel Corp Method of measuring working surface profile of refractory lining vessels and of mending the surface
DE2836953C2 (de) * 1978-08-24 1985-03-14 Stahlwerke Peine-Salzgitter Ag, 3150 Peine Verfahren für die Zustellung von Abstichrinnen mit hochwertigen feuerfesten Stampfmassen

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU36079A1 (fr) *
FR1582587A (fr) * 1967-08-04 1969-10-03
FR2270970A1 (en) * 1974-05-14 1975-12-12 Miki Masamitsu Lining casting ladles esp for cast iron - with compsn contg refractory exothermic metal or alloy, oxidising agent and binder
FR2366902A1 (fr) * 1976-10-08 1978-05-05 Foseco Trading Ag Repartiteur garni de refractaire, notamment pour la coulee continue d'acier
FR2373495A1 (fr) * 1976-12-10 1978-07-07 Didier Werke Ag Pate a base de dolomie granulee pour le revetement de capacites pour acier ou fer a l'etat liquide
DE2716092A1 (de) * 1977-04-12 1978-10-19 Contherm Ind Und Huettenbedarf Auskleidung eines tundishs
FR2393637A1 (fr) * 1977-06-07 1979-01-05 Daussan & Co Composition pour revetement de repartiteur de coulee, procede pour revetir ce dernier et revetement obtenu
DE2846839A1 (de) * 1978-10-27 1980-04-30 Didier Werke Ag Ausguss zum vergiessen von geschmolzenem metall, insbesondere stahlschmelze

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096985A1 (fr) * 1982-06-28 1983-12-28 Trw Inc. Revêtement de creuset et procédé de fabrication ainsi que son utilisation
US4545568A (en) * 1983-02-24 1985-10-08 Didier-Werke Ag Unfired refractory structural member in the form of a plate for use as an expendable lining of metallurgical vessels
EP0135336A3 (fr) * 1983-08-11 1985-08-14 The Babcock & Wilcox Company Planche
GB2171625A (en) * 1985-02-04 1986-09-03 Morganite Crucible Ltd Duct for molten metal
FR2609020A1 (fr) * 1986-12-30 1988-07-01 Didier Werke Ag Beton refractaire
WO1993017984A1 (fr) * 1992-03-06 1993-09-16 Specialty Refractories Inc. Composition refractaire applicable par aspersion
FR2688211A1 (fr) * 1992-03-08 1993-09-10 Veitscher Magnesitwerke Ag Agent liant et plastifiant pour la fabrication des materiaux a base de carbone, ceramiques, refractaires et materiau realise avec cet agent.
AU669769B2 (en) * 1992-12-22 1996-06-20 Foseco International Limited Refractory compositions
WO1994014727A1 (fr) * 1992-12-22 1994-07-07 Foseco International Limited Compositions refractaires
US6284688B1 (en) 1992-12-22 2001-09-04 Foseco International Limited Refractory compositions
NL1003885C2 (nl) * 1996-08-27 1998-03-03 Hoogovens Tech Services Goot voor een hete smelt en gootsysteem.
WO1998008982A1 (fr) * 1996-08-27 1998-03-05 Hoogovens Technical Services Europe B.V. Chenal de coulee pour coulee chaude, systeme de chenal de coulee et procede de transport d'une coulee chaude
US6090340A (en) * 1996-08-27 2000-07-18 Hoogovens Technical Services Europe Bv Runner for a hot melt, runner system and method for conveying a hot melt
CN1066200C (zh) * 1996-08-27 2001-05-23 霍戈文斯技术服务欧洲有限公司 用于热熔体的流槽,用于输送热熔体的流槽系统及方法
EP1496312A3 (fr) * 2003-07-11 2006-11-08 HDG Bavaria GmbH Heizkessel & Anlagenbau Chambre de combustion pour un appareil de combustion plus particulièrement destiné aux combustibles solides de type biomasse
WO2006030319A3 (fr) * 2004-09-14 2006-06-08 North Cape Minerals As Procede de production de revetements d'usure refractaires dans des cuilleres de coulee et des chassis de fonderie et revetements d'usure ainsi obtenus
CN115466126A (zh) * 2022-08-17 2022-12-13 南京钢铁股份有限公司 一种利于中间包翻包用隔离材料
CN115466126B (zh) * 2022-08-17 2023-04-11 南京钢铁股份有限公司 一种利于中间包翻包用隔离材料

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Inventor name: CANTARIN, ANTONIO