EP0742889B1 - Procede et dispositif de reconstruction partielle de la paroi de revetement de poches a acier en fusion - Google Patents

Procede et dispositif de reconstruction partielle de la paroi de revetement de poches a acier en fusion Download PDF

Info

Publication number
EP0742889B1
EP0742889B1 EP95908261A EP95908261A EP0742889B1 EP 0742889 B1 EP0742889 B1 EP 0742889B1 EP 95908261 A EP95908261 A EP 95908261A EP 95908261 A EP95908261 A EP 95908261A EP 0742889 B1 EP0742889 B1 EP 0742889B1
Authority
EP
European Patent Office
Prior art keywords
template
sealing body
lining
area
steel casting
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
EP95908261A
Other languages
German (de)
English (en)
Other versions
EP0742889A1 (fr
Inventor
Heinz Werner Stripp
Wolfgang A. Rasim
Horst Tiemann
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.)
Wuelfrather Feuerfest und Dolomitwerke & Co GmbH
Original Assignee
Dolomitwerke GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6509357&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0742889(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dolomitwerke GmbH filed Critical Dolomitwerke GmbH
Publication of EP0742889A1 publication Critical patent/EP0742889A1/fr
Application granted granted Critical
Publication of EP0742889B1 publication Critical patent/EP0742889B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 or breaking away linings
    • F27D1/1626—Making linings by compacting a refractory mass in the space defined by a backing mould or pattern and the furnace wall
    • 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 or breaking away linings
    • F27D2001/1605—Repairing linings
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0001—Positioning the charge
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0036—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising inflatable or extendable parts

Definitions

  • the invention relates to a method for restoring the refractory lining in the upper zone of the wall region of a pan for casting and treating steel or similar metallurgical vessels and a device for carrying out the method.
  • the refractory lining of metallurgical vessels usually consists of permanent feed and working feed.
  • permanent lining fireclay bricks or insulating bricks are usually applied in one or more layers to the inside of the steel jacket of the vessel.
  • the working chuck is applied to it, which is later in contact with the molten steel and is removed by erosion, in particular when the metal bath is moved, and by chemical attack, in particular by the slag floating on the molten steel.
  • the working lining can be bricked with refractory bricks or brought in as a refractory mass that solidifies into a monolithic layer. Combinations of these two types of delivery are also possible.
  • the infeed is often divided into zones which have different strengths of the working feed and / or differently resistant refractory types.
  • the working feed is either completely broken out and renewed at the end of the pan journey or repaired in the affected zones if the wear is only partially premature. If the working feed is exposed to chemically aggressive slag in the upper part of the pan about 1 m from the upper edge, the feed in the slag zone has to be broken out and renewed or repaired several times during a pan trip.
  • a device for new deliveries, a device is known from SU-A-178955 with which the filled mass is compacted towards the walls of the pan by radial pressing by means of extendable and height-adjustable template rings.
  • a delivery method is also known in which the working feed of steel ladles is delivered with refractory concrete.
  • a template is required for the wall lining, which specifies the inner contour of the finished concrete lining. The mass is poured into the annular space between the permanent lining and the template.
  • a template that extends from the bottom to the top edge of the pan. For technical reasons, it can be divided in the middle. Mixers, pumps and internal vibrators are usually used to carry out the casting process. The shedding over a period of, for example, three hours must be carried out continuously to avoid possible hardening in the surface area. The vibrators are intended to prevent cavities and cavities from forming in order to achieve good compaction. If, for example, the mass has set after 24 hours, the template can be pulled out again.
  • the object is achieved in that the gap between the lower end of the template and the working chuck projecting below the area to be restored is sealed by inflating a tubular sealing body and the sealing body is relaxed again before the template is pulled.
  • the working feed does not have to be completely broken out in the upper area. It is also not necessary to use a special device to process the surface, rather it is sufficient to remove steel residues and other caking with the usually existing excavation machine with a flat chisel. Delivery times and material requirements are shorter than with a complete outbreak and redelivery Stones. The permanent food underneath is not damaged.
  • the device for performing the method is designed in the manner set out in claims 2 to 4.
  • High-clay casting compounds for refractory concrete can be used to repair the upper zone of the wall area.
  • Fig. 1 shows a schematic representation of the steel jacket (1), the permanent chuck (2) and the working chuck (3) and (4).
  • the working feed in the lower area (3) still has sufficient residual strength.
  • the working food in the upper area (4) on the other hand, is so worn that the pan can no longer be used.
  • the working chuck in the upper area (4) has already been cleaned of steel residues and other caking.
  • the template (5) is hung into the pan from above.
  • An inwardly offset ring (6) is attached to the base of the template.
  • a tubular sealing body (7) made of flexible material is attached to the ring (6).
  • the sealing body (7) is inflatable. It can consist of plastic-reinforced rubber.
  • a protective jacket (8) between the working chuck (3) and the sealing body (7) This is attached with its upper edge, for example with a tab on the lower edge of the template (5). It consists of tear-resistant, flexible material and is cut so that it exerts pressure on the sealing body (7) with a prestress.
  • the sealing body (7) is inflated so that it is attached to the working chuck in the lower Area (3) in the transition to working feed in the upper area (4) tightly.
  • the template is then ready to repair the working feed in the upper area (4) by pouring refractory casting compound into the space between the remaining feed and the wall of the template (5).
  • Fig. 2 shows the state after the repair process has ended.
  • the tubular sealing body (7) is no longer pressurized.
  • the protective jacket (8) is no longer in contact with the working chuck in the lower area (3), but instead presses the tubular sealing body (7) against the ring (6) at the base of the template due to the internal pretension.
  • the template can now be pulled out upwards without damaging the sealing body (7) or the newly cast working chuck in the upper area (4).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

Il était difficile jusqu'à maintenant d'effectuer des réparations intermédiaires de la paroi monolithique réfractaire de revêtement de poches de coulée et de manutention d'acier lorsque la zone des scories était usée avant les autres zones. Selon ce nouveau procédé de reconstruction de la zone supérieure de la paroi réfractaire, on peut effectuer la réparation de manière économique en rendant étanche l'écartement entre l'extrémité inférieure du gabarit et le revêtement qui fait saillie au-dessous de la zone à reconstruire en gonflant un corps tubulaire d'étanchéité (7) et en dégonflant à nouveau le corps d'étanchéité (7) avant d'enlever le gabarit. Ce procédé est utile pour des poches de coulée et de manutention d'acier ou pour d'autres récipients métallurgiques similaires.

Claims (4)

  1. Procédé de réfection réfractaire dans la zone supérieure de la paroi d'une poche à acier en fusion et d'une poche à traitement par coulée et remplissage de l'espace annulaire compris entre un gabarit(5) et la doublure fabriquée restante (4) par une masse réfractaire fondue,
    caractérisé en ce que
    l'intervalle, entre l'extrémité inférieure du gabarit (5) et le revêtement opérationnel (3) dépassant en dessous de la zone à reconstruire, est rendu étanche par insufflation d'un corps étanche (7) en forme de tuyau et le corps étanche (7) avant le retrait du gabarit (5) est à nouveau détendu.
  2. Dispositif avec un gabarit (5) ainsi qu'un mélangeur, des pompes et un vibreur intérieur pour la réalisation du procédé selon la revendication 1,
    caractérisé en ce qu'
    à l'extrémité inférieure du gabarit (5), est installé un anneau (6) décalé vers l'intérieur, sur la périphérie extérieure duquel est appliqué le corps étanche (7) gonflable en forme de tuyau.
  3. Dispositif selon la revendication 2,
    caractérisé en ce que
    sur le bord inférieur du gabarit (5), est fixée une enveloppe protectrice élastique (8) qui entoure le corps étanche à l'extérieur.
  4. Dispositif selon la revendication 3,
    caractérisé en ce que,
    l'enveloppe protectrice élastique (8) applique le corps d'étanchéité détendu (7) contre l'anneau (6) décalé vers l'intérieur.
EP95908261A 1994-02-03 1995-02-03 Procede et dispositif de reconstruction partielle de la paroi de revetement de poches a acier en fusion Expired - Lifetime EP0742889B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4403271A DE4403271C1 (de) 1994-02-03 1994-02-03 Verfahren und Vorrichtung zur teilweisen Wiederherstellung der Wandzustellung von Stahlgießpfannen
DE4403271 1994-02-03
PCT/EP1995/000398 WO1995021363A1 (fr) 1994-02-03 1995-02-03 Procede et dispositif de reconstruction partielle de la paroi de revetement de poches a acier en fusion

Publications (2)

Publication Number Publication Date
EP0742889A1 EP0742889A1 (fr) 1996-11-20
EP0742889B1 true EP0742889B1 (fr) 1997-10-01

Family

ID=6509357

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95908261A Expired - Lifetime EP0742889B1 (fr) 1994-02-03 1995-02-03 Procede et dispositif de reconstruction partielle de la paroi de revetement de poches a acier en fusion

Country Status (8)

Country Link
EP (1) EP0742889B1 (fr)
CZ (1) CZ284815B6 (fr)
DE (2) DE4403271C1 (fr)
ES (1) ES2110315T3 (fr)
FI (1) FI111188B (fr)
PL (1) PL178437B1 (fr)
WO (1) WO1995021363A1 (fr)
ZA (1) ZA95855B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5632937A (en) * 1991-03-22 1997-05-27 Magneco/Metrel, Inc. Method of installing a refractory lining
DE19724509A1 (de) * 1997-06-11 1998-12-24 Gft Ges Fuer Feuerfest Technik Verfahren zur Reparatur und Zustellung von feuerfester Auskleidung
DE19724510A1 (de) * 1997-06-11 1998-12-24 Gft Ges Fuer Feuerfest Technik Torpedopfanne

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1358186A (fr) * 1963-05-30 1964-04-10 Beteiligungs & Patentverw Gmbh Dispositif propre à empêcher les accidents lors de l'exécution de travaux dans les convertisseurs et analogues comportant des cuves pourvues d'un garnissage
BE693484A (fr) * 1966-02-03 1967-07-17
US4094938A (en) * 1974-03-08 1978-06-13 Serafim Vasilievich Kolpakov Method and apparatus for lining ladles
JPS53102803A (en) * 1977-02-22 1978-09-07 Nippon Steel Corp Automatic repairing device of furnace body opening
AT361150B (de) * 1979-02-20 1981-02-25 Frings Hermann H Vorrichtung zum auskleiden von gefaessen der metallurgie mit stampfmassen
JPS57190764A (en) * 1981-05-18 1982-11-24 Nippon Kokan Kk <Nkk> Split molding flask for casting

Also Published As

Publication number Publication date
PL315810A1 (en) 1996-12-09
DE59500757D1 (de) 1997-11-06
EP0742889A1 (fr) 1996-11-20
FI111188B (fi) 2003-06-13
FI963060A (fi) 1996-10-01
WO1995021363A1 (fr) 1995-08-10
CZ284815B6 (cs) 1999-03-17
DE4403271C1 (de) 1995-06-01
PL178437B1 (pl) 2000-04-28
ES2110315T3 (es) 1998-02-01
FI963060A0 (fi) 1996-08-02
ZA95855B (en) 1996-01-10
CZ228596A3 (en) 1997-05-14

Similar Documents

Publication Publication Date Title
DE69210664T2 (de) Verfahren und Form zur Herstellung, Ausbesserung und Wiederherstellung von Behältern für geschmolzenes Metall
EP0741854B2 (fr) Procede et dispositif de fabrication d&#39;un revetement monolithique ignifuge de poche a acier en fusion
EP0742889B1 (fr) Procede et dispositif de reconstruction partielle de la paroi de revetement de poches a acier en fusion
EP0729800B1 (fr) Procédé de réfection du garnissage réfractaire d&#39;une poche de coulée
DE2458406A1 (de) Auswechselbarer abstich fuer ein feuerfest ausgekleidetes gefaess
DE1149502B (de) Vorrichtung zur Herstellung von Giessformausfuetterungen
EP0514383B1 (fr) Procede et installation de reconstitution du revetement refractaire de poches de coulee
DE3114069C2 (de) Feuerfestes Verschleißfutter für Roheisentransportgefäße
DE3920543A1 (de) Verfahren zur verhinderung der schlackenansatzbildung an pfannen
DE2053003A1 (de) Verfahren und Vorrichtung zum loka len Instandsetzen der feuerfesten Innen wand eines metallurgischen Gefäßes
DE3740521C2 (fr)
EP0477350B1 (fr) Revetement refractaire basique pour un recipient metallurgique et procede de fabrication d&#39;un tel revetement
DE1807322A1 (de) Auskleidung fuer metallurgische Gefaesse,insbesondere fuer Elektrolichtbogenoefen
EP0547619A1 (fr) Poche de coulée
DE1930394C3 (de) Vorrichtung zur Wasseraufbereitung eisenhaltiger Stahlwerksschlacke nach dem Erstarren in einem schichtweise gefüllten Gießbett
DE1046267B (de) Verfahren zum Ausflicken von Stampftiegeln bei Induktions-Tiegelschmelzoefen
DE2010743C (de) Zwischenbehälter für Stranggießkokillen
EP0956917A1 (fr) Récipient métallurgique et procédé pour la coulée d&#39;un récipient
SU1021080A1 (ru) Шаблон дл изготовлени монолитной футеровки металлургических ковшей
DE2041588C3 (de) Schmelz- und Niederdruckgieß-Verfahren und Einrichtung zur Durchführung des Verfahrens
DE1000136B (de) Verfahren zum Giessen und Druckgiessen von Eisen- und Nichteisenmetallschmelzen
DE1433548A1 (de) Verbundblock fuer die Auskleidungen metallurgischer OEfen
DE7008330U (de) Zwischenbehaelter fuer stranggussanlagen.
DE1037659B (de) Verfahren und Vorrichtung zum Auskleiden von Pfannen mit feuerfestem Material
DE7910204U1 (de) Gefaess zum frischen fluessiger metalle

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

17P Request for examination filed

Effective date: 19960808

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE ES FR GB IT LU SE

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19970204

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE ES FR GB IT LU SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19971001

REF Corresponds to:

Ref document number: 59500757

Country of ref document: DE

Date of ref document: 19971106

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19980101

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: WUELFRATHER FEUERFEST UND DOLOMITWERKE GMBH & CO.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19971231

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2110315

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: VEITSCH-RADEX AKTIENGESELLSCHAFT FUER FEUERFESTE E

Effective date: 19980630

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

R26 Opposition filed (corrected)

Opponent name: VEITSCH-RADEX GMBH

Effective date: 19980630

PLBL Opposition procedure terminated

Free format text: ORIGINAL CODE: EPIDOS OPPC

PLBM Termination of opposition procedure: date of legal effect published

Free format text: ORIGINAL CODE: 0009276

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

Free format text: STATUS: OPPOSITION PROCEDURE CLOSED

27C Opposition proceedings terminated

Effective date: 20001104

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20010810

Year of fee payment: 7

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020903

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20060201

Year of fee payment: 12

Ref country code: ES

Payment date: 20060201

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20060209

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20060214

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20060227

Year of fee payment: 12

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20070203

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20071030

BERE Be: lapsed

Owner name: *WUELFRATHER FEUERFEST UND DOLOMITWERKE G.M.B.H. &

Effective date: 20070228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070203

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070228

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20070205

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070205

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070203