EP0021919B1 - Vorrichtung zum Befestigen und Abdichten von Kühlplatten am Hochofen - Google Patents

Vorrichtung zum Befestigen und Abdichten von Kühlplatten am Hochofen Download PDF

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Publication number
EP0021919B1
EP0021919B1 EP80400802A EP80400802A EP0021919B1 EP 0021919 B1 EP0021919 B1 EP 0021919B1 EP 80400802 A EP80400802 A EP 80400802A EP 80400802 A EP80400802 A EP 80400802A EP 0021919 B1 EP0021919 B1 EP 0021919B1
Authority
EP
European Patent Office
Prior art keywords
armour
sleeve
cooling plates
plates
fixing
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
Application number
EP80400802A
Other languages
English (en)
French (fr)
Other versions
EP0021919A1 (de
Inventor
Pierre Henri Rollot
Jean Armand Cordier
Raymons Louis Briche
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.)
USINOR SA
TECHNILOR
Original Assignee
USINOR SA
TECHNILOR
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
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Application filed by USINOR SA, TECHNILOR filed Critical USINOR SA
Publication of EP0021919A1 publication Critical patent/EP0021919A1/de
Application granted granted Critical
Publication of EP0021919B1 publication Critical patent/EP0021919B1/de
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/10—Cooling; Devices therefor

Definitions

  • the present invention relates to a device capable of ensuring, on the one hand, the fixing and the maintenance of the cooling plates against the internal wall of a blast furnace shield, and on the other hand, the sealing at the gas passages. between shielding and cooling plates inside the blast furnace and at the inlets and outlets of the coolant circulation tubes outside the blast furnace.
  • the present device allows the plates to be held against the internal wall of a blast furnace without these specific means of attachment.
  • the present device is composed of elements, cups and washers, welded on the one hand, to the shield of the blast furnace, on the other hand, on the sheath protecting the water inlet and outlet tubes of the plates cooling, the cups being placed in the upper parts of the plates while the washers are placed in the lower parts.
  • the gases, alkaline vapors, carbon, formed during the development of the cast iron in the enclosure of the blast furnace arrive to pass through the refractory lining through the joints, cracks or spaces prevailing between the cooling plates and can travel along the shielding inside the blast furnace, or escape outside the blast furnace: either through the holes reserved in the shielding for the passage of the water inlet and outlet tubes of the cooling plates, either by the annular space formed by the water inlet and outlet tubes and the tubular protective sleeves.
  • the gases mainly CO and C0 2 are a nuisance and a serious danger for the personnel if they escape from the blast furnace.
  • the passage of hot gases between the shield and the cooling plates is a disruptive element for the proper functioning of said plates, one of the functions of which is to prevent the sheets constituting the shield from undergoing abnormal temperature rises, detrimental to their mechanical strength.
  • the device according to the present invention makes it possible to avoid these drawbacks by preventing the gases from traveling along the inner wall of the shielding and therefore by eliminating the possibility of carbon deposits forming.
  • the fixing cups and washers are made of weldable steel of thickness and shapes such that the cups can undergo slight deformations and the washers can serve as a fixed point.
  • the washers are carefully cut from a weldable steel and the weld bead connecting them to the shielding is determined by a number of welding passes such that there is a resistant and perfectly sealed junction.
  • the cups are stamped in steel sheets of small thickness but with good elastic limit to give them once welded the best possible flexibility.
  • the weld beads for the shield connection are suitable for making a strong and perfectly waterproof junction.
  • these washers and cups maintain with sufficient efficiency and pressure the cooling plates against the shielding while preventing the gases prevailing in the enclosure of the blast furnace from escaping towards the outside. They therefore provide a fixing role, a sealing role and a compression role for the seals placed between the shielding and the cooling plates.
  • stuffing products are firstly placed in the spaces created between the various cooling plates as well as in the space formed between the internal wall of the shielding and the cold face of the plates.
  • the sealing device which is the subject of the invention comprises a series of flexible preformed seals of shape allowing the fitting onto support bosses provided on the cooling plates.
  • cooling plates At the bottom of the cooling plates are bonded rectangular shaped seals of suitable thickness depending on the design of the plates, so that once they are mounted inside the blast furnace, they constitute a continuous belt in contact with the shield and with the cold side of the cooling plates.
  • the same number of sealing belts follows, preventing gas passage along the internal wall of the blast furnace, the device being able to be suitable from the display area. to the top of the tank.
  • each sleeve protecting the water outlet tube is equipped with a flat circular seal ensuring the elastic support of the cooling plates against the shielding and baffling against possible flow. off the blast furnace.
  • the sealing device is completed at the outer end of the outer sheaths to the shielding by the installation of ring-shaped seals obtained by forming silicone elastomer or similar plastic product. These rings are housed in the annular space formed by the water inlet and outlet tubes and by the protective furnaces, these seals are locked in position by a metal washer made integral with the water circulation tubes by welding points .
  • ring seals are held by a clamp or similar fixing which ensures their retention by strapping as well as a compression between the metal washer and a stuffing of silicone elastomer or similar plastic product injected into the assembly between circulation tube. of water and protective sleeves, after placing an asbestos braid.
  • the sealing device for the gas passages between the protective sheath 4 and the tube 9 where the water circulates applies both to the circulation water inlet tubes at the bottom of the cooling plates 3 and to the tubes water outlet placed at the top of the cooling plates.
  • the flexible seal or ring 10 is held in compression by a clamp 12 or similar fixing.
  • a washer 6 is both welded externally to the shield 2 and to the tubular protective sheath 4. This washer 6 constitutes the fixed point at the bottom of the cooling plates.
  • a cup 13 is also both welded externally to the shield 2 and to the tubular protective sheath 4. This cup 13 constitutes the movable point at the hat level of the cooling plates.
  • the washers 6 and cups 13 ensure a perfect seal against the possible flow of blast furnace gases which could escape through the holes reserved in the shield for the passage of the protective sleeves 4.
  • the stuffing product 14 placed between the internal wall of the shield 2 and the cooling plate 3 is a flexible refractory concrete based on magnesia, CO resistant which is injected during mounting of the plates. Such a passage is available under the name of Plasmag from Pasek France.
  • the stuffing product 15 placed in the interstices separating two adjacent cooling plates 3 is a waterproof fibrous mastic of refractory fibers in a ceramic binder resistant to about 1200 ° C. Such a product is available from SEPR.
  • Fig. 1 is designated by the general reference 17 the coating of refractory bricks which is bonded to the internal faces of the cooling plates by known techniques for preparing this type of refractory coating for shielding protection.
  • Figs. 4, 5 and 6 is shown the seal 1 in plan and sections while in FIG. 7 is shown a seal 1 constituting one of the elements of a sealing belt placed on the circumference 19 of the internal wall of a blast furnace.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Blast Furnaces (AREA)

Claims (8)

1. Vorrichtung zum Befestigen und Abdichten von ringförmig angeordneten auf der Innenseite des Hochofenpanzers (2) gestapelten Kühlungsplatten (3), welche zum Kühlmediumumlauf jeweils interne Rohrleitungen (9) aufweisen, die jeweils oben bzw. unten an diesen Platten innen in eine Schutzhülse (4) münden, wobei die Rohrleitungen derart verlängert werden, daß sie den Panzer in zweckmäßig vorgesehenen Durchführungen durchqueren, dadurch gekennzeichnet, daß in der Höhe des Plattenunterteils die Schutzhülse (4) nach außen aus dem Panzer verlängert ist, mit dem diese außenseitig über einen sowohl an die Hülse (4) als auch an den Panzer (2) geschweißten Ring (6) verbunden ist, wobei diese Verbindung gleichzeitig als Mittel zur Plattenbefestigung auf dem Panzer und zur Druckhaltung eines durchgehenden Abdichtungsringes zwischen den Platten und der Panzerunterseite dient, bestehend aus nebeneinander angeordneten, allgemein rechteckig ausgebildeten vorgeformten Dichtungen (1), die sich jeweils an das Plattenunterteil anpassen und rechtwinklig zu der Hülse durchgebohrt sind, und daß in der Höhe des Plattenoberteils die Hülse (4) ebenfalls nach außen aus dem Panzer verlängert ist, mit dem sie außenseitig über eine an die Hülse und an den Panzer gleichzeitig geschweißte Schale (13) verbunden ist, wobei diese Verbindung gleichzeitig als Mittel zur Plattenbefestigung auf dem Panzer und zur Druckhaltung von kreisförmigen, jeweils eine Hülse umgebenden Flachdichtungen (5) zwischen den Platten und der Panzerinnenseite dient.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß jede rechteckige Dichtung an ihrem Unterteil einen Ansatz (18) aufweist, welcher zwischen der diese Dichtung aufnehmende Platte und dem Oberteil der unmittelbar darunterliegenden Platte eingeführt und eingeklemmt ist.
3. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Dichtungen aus einem Silikonelastomer durch Preßformen hergestellt werden.
4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die rechteckigen Dichtungen beim Preßformen in die Masse eingelassene Hohlkörper (16) aufweisen.
5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sie weiterhin außen am Panzer beim Ende der jeweiligen Hülse (4) eine weiche Masse (8) umfaßt, die nach Anordnung einer Asbestkordel (7) zwischen die Rohrleitung (9) und deren Hülse (4) eingespritzt wird, sowie eine die Rohrleitung (9) umgebende und zwischen dem Hülsenendabschnitt und einem mit der Rohrleitung (9) verbundenen feststehenden Anschlag (11) zusammengedrückte kreisförmige Dichtung (10).
6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zwischen der Innenwand des Panzers (2) und den Kühlungsplatten (3) sowie in den Lücken zwischen zwei angrenzenden Kühlungsplatten jeweils Füllstoffe (14 und 15) angeordnet werden.
7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die zwischen der Innenwand des Panzers (2) und den Kühlungsplatten (3) angeordneten Füllstoffe (14) aus einem CO-beständigen Magnesiumoxid enthaltenden Feuerfestbeton bestehen.
8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die in den Lücken zwischen zwei angrenzenden Kühlungsplatten angeordneten Füllstoffe (15) aus einem faserartigen, in einem Keramikbindemittel feuerfeste Fasern enthaltenden Isolierkitt bestehen.
EP80400802A 1979-06-06 1980-06-05 Vorrichtung zum Befestigen und Abdichten von Kühlplatten am Hochofen Expired EP0021919B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7915074 1979-06-06
FR7915074A FR2458591A1 (fr) 1979-06-06 1979-06-06 Etancheite aux gaz sur plaques de refroidissement interieures et sur paroi exterieure de blindages de hauts fourneaux

Publications (2)

Publication Number Publication Date
EP0021919A1 EP0021919A1 (de) 1981-01-07
EP0021919B1 true EP0021919B1 (de) 1984-03-14

Family

ID=9226513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400802A Expired EP0021919B1 (de) 1979-06-06 1980-06-05 Vorrichtung zum Befestigen und Abdichten von Kühlplatten am Hochofen

Country Status (9)

Country Link
US (1) US4336925A (de)
EP (1) EP0021919B1 (de)
JP (1) JPS569305A (de)
BE (1) BE883692A (de)
CA (1) CA1146355A (de)
DE (1) DE3066947D1 (de)
FR (1) FR2458591A1 (de)
IT (1) IT1188880B (de)
LU (1) LU82506A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3100321C1 (de) * 1981-01-08 1982-09-30 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Befestigung von Plattenkuehlern in metallurgischen OEfen,insbesondere Hochoefen
FR2654438B1 (fr) * 1989-11-14 1994-04-01 Chavanne Ketin Plaques de refroidissement pour hauts-fourneaux et installation de refroidissement mettant en óoeuvre ce type de plaques.
US6241734B1 (en) * 1998-08-14 2001-06-05 Kyphon, Inc. Systems and methods for placing materials into bone
EP1391521A1 (de) * 2002-08-20 2004-02-25 Voest-Alpine Industrieanlagenbau GmbH & Co. Kühlplatte für metallurgische Öfen
WO2011123568A1 (en) * 2010-03-30 2011-10-06 Berry Metal Company Apparatus and method for gas tight secondary stave support

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR861513A (fr) * 1938-11-10 1941-02-11 H A Brassert And Company Ltd Système de refroidissement pour fours à cuve
US2482709A (en) * 1948-03-30 1949-09-20 Tennessee Coal Iron And Railro Device for preventing cinder eruptions from blast furnaces
FR1239433A (fr) * 1959-07-16 1960-08-26 Usinor Dispositif à boîte de refroidissement pour haut fourneau
US3314668A (en) * 1964-07-07 1967-04-18 Inland Steel Co Blast furnace stack with cooling staves
FR2160724A1 (en) * 1971-11-22 1973-07-06 Beylard Eliette Sealing and reinforcing furnace jackets - by plastic joints in the cooling plates
NL182158C (nl) * 1976-02-17 1988-01-18 Hoogovens Groep Bv Werkwijze voor het bevestigen van een koelstuk aan het pantser van een hoogoven alsmede koelstuk.
AT357576B (de) * 1976-12-10 1980-07-25 Voest Ag Kuehlplatte fuer metallurgische, mit einer feuer- festen auskleidung versehene oefen und deren einbau
DE2803297B1 (de) * 1978-01-26 1978-10-26 Dietmar Doetsch Wanddurchfuehrung fuer die Anschlussrohre von Hochofen-Kuehlkoerpern

Also Published As

Publication number Publication date
LU82506A1 (fr) 1980-10-08
US4336925A (en) 1982-06-29
BE883692A (fr) 1980-12-08
JPS569305A (en) 1981-01-30
FR2458591B1 (de) 1984-03-23
IT8067876A0 (it) 1980-06-05
DE3066947D1 (en) 1984-04-19
IT1188880B (it) 1988-01-28
EP0021919A1 (de) 1981-01-07
FR2458591A1 (fr) 1981-01-02
CA1146355A (fr) 1983-05-17

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