EP0267366B1 - Feuerfeste Auskleidung, insbesondere für Deckel von Wärmverteilern - Google Patents

Feuerfeste Auskleidung, insbesondere für Deckel von Wärmverteilern Download PDF

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Publication number
EP0267366B1
EP0267366B1 EP87109901A EP87109901A EP0267366B1 EP 0267366 B1 EP0267366 B1 EP 0267366B1 EP 87109901 A EP87109901 A EP 87109901A EP 87109901 A EP87109901 A EP 87109901A EP 0267366 B1 EP0267366 B1 EP 0267366B1
Authority
EP
European Patent Office
Prior art keywords
lining
heat shield
cover
refractory
cover plate
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
EP87109901A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0267366A1 (de
Inventor
Laurenz Keisers
Kurt Engelmann
Rainer Janssen
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.)
Didier Werke AG
Original Assignee
Didier Werke 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 Didier Werke AG filed Critical Didier Werke AG
Priority to AT87109901T priority Critical patent/ATE53520T1/de
Publication of EP0267366A1 publication Critical patent/EP0267366A1/de
Application granted granted Critical
Publication of EP0267366B1 publication Critical patent/EP0267366B1/de
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • 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

Definitions

  • the invention relates to a refractory lining for the lid of metallurgical vessels, in particular for a heat distributor used in continuous casting plants, the inside of which is lined with fireproof material with burner openings, with a cover plate and insulation.
  • Lids of this type carry either a refractory concrete layer on the fire side or a fire-resistant cladding which can be bricked up or also constructed like a fire blanket.
  • What is difficult with all known designs is the complicated and time-consuming disassembly and assembly when renewing the cover infeed, which due to its compact structure is usually exposed to high thermal stresses during operation and is prematurely destroyed by cracks or poses ongoing repair problems.
  • the thermal insulation leaves something to be desired.
  • the object of the present invention is to facilitate handling during repairs and new deliveries with improved operating behavior and increased thermal insulation by means of an improved structure and arrangement of the refractory lining in the lid.
  • a heat shield which is removable and planarly movable is arranged on the cover plate by means of supporting members and the heat shield is sealed against the cover plate by means of an elastic peripheral seal.
  • the invention provides a support plate clad on the fire side with refractory material with support pins which are mounted so as to be movable in a plane in the base, penetrate the insulation and are suspended on the cover plate, the pins being held with a collar in a tolerance chamber of the base.
  • This construction gives the heat shield sufficient plan mobility with simple constructional means and creates optimal conditions for handling, especially when the supporting bolts are advantageously detachably suspended from the sleeve of the cover plate and pipe sockets are provided on this plate, which limit recesses in the insulation and the arrangement of supporting bolts and base surround.
  • the refractory cover lining is made of ceramic fiber packs, while the heat shield has a refractory concrete layer anchored to the support plate with the interposition of a ceramic fiber mat by pins.
  • the refractory concrete layer can be removed from the support plate together with the fiber mat if necessary.
  • burner stones arranged on the heat shield engage in collars fastened around the burner openings on the cover plate and lined with ceramic fiber material.
  • the basic assignment of the burner blocks to the heat shield contributes to further simplifying the maintenance of the cover, especially if, preferably, each burner block is detachably held by at least two opposite locations on the peripheral surface of a holding device arranged on the supporting plate in the refractory concrete layer, so that after Breaking up the refractory concrete layer at said locations each burner block on the installed or removed heat shield is replaceable.
  • refractory protective sleeves are provided on the heat shield, which surround these supports in the case of a cover with support supports provided in an emptying gap.
  • the heat shield is divided longitudinally into shield sections with their own peripheral seals. This is a particularly advantageous embodiment because the individual sections of the heat shield can be replaced independently of one another and it is possible to adapt the size dimensions of the sections to existing means of transport.
  • the heat shield and the shield portions are provided, the refractory concrete layer enclosing missionszargen on the support plate, on which sealing cords are inserted from ceramic fiber, resulting in a simple but we- "effect full sealing.
  • V denotes a distributor, also known as a heat distributor or tundish, which serves to feed continuous casting molds with molten steel and is provided on one long side with a pouring core 1, and has a metallic jacket 2 and one has fireproof lining 3. Furthermore, a row of spouts 4 with inlet connections 5 and external slide closures 6 are provided in the center of the distributor base, by means of which the melt drainage through pouring tubes, not shown, to the individual molds of the continuous casting installation can be regulated.
  • a distributor also known as a heat distributor or tundish
  • the distributor V is covered with a cover W lined with insulating and refractory materials.
  • This has a mounting frame 7 and a cover plate 10 provided with burner openings 8 and a pouring opening 9, on which a profile rail 12 including a circumferential cooling 11 and reinforcing is provided.
  • the cover W has insulation 13, which is protected by a heat shield H, which consists of a heat-resistant support plate 15 clad on the fire side with a fire-concrete layer 14 and is held detachably on the cover plate 10 by means of support bolts 16 attached thereto.
  • the insulation penetrating burner stones 18 are arranged on the heat shield H, whereas an opening lining 19 made of unshaped refractory material is provided at the pouring opening 9 and extends over the pouring core 1.
  • the cover W has on the long side, on which the pouring core 1 is located, an emptying gap 20 with refractory-clad cover supports 21 resting on the distributor V, around which the board surface 22 on which the cover W is seated has a refractory protective layer 23 wears.
  • stopper 25 which can be clamped onto the distributor by means of hydraulic means (not shown) and which can be clamped onto the distributor, can be inserted into the burner blocks 18 to close the burner openings 8.
  • the gap 20 serves to free the distributor V parked on the parking space outside the continuous casting installation by tilting about its longitudinal axis from residual melt containing predominantly slag in order to avoid freezing in the ceramic of the slide closures 6. Also on the parking space, the distributor V is heated up before it is used in the continuous casting installation, for which purpose 8 burners are inserted into the burner openings which are otherwise closed by the plugs 25. For the rest, as part of the management of a continuous caster, a further cover with burners fixed to the burner openings 8 is available. If emptying is no longer guaranteed - the dwell time is too long - you have to tilt back to the starting position and release the lock. Now a "second cover" in the waiting position is put on and hydraulically clamped again.
  • This "second cover” is the same as the other, with the exception of the high-performance burners located there.
  • These high-performance burners are arranged in such a way that they are located on the distributor channel, just above the tundish sliding locks (sliding lock heating). These six high-performance burners are able to heat the interior to over 1500 ° C and liquefy the residual steel cooled there.
  • a sealing braid 26 made of ceramic fiber material is introduced into the gap 20 ; which is only removed again before the distributor V is emptied.
  • FIGS. 6 to 12. 6 to 9 The more detailed design of the refractory lining of the cover W can be seen in FIGS. 6 to 12. 6 to 9, the insulation 13 composed of ceramic fiber packs 30 is attached to the inside of the cover plate 10, which has been tried and tested with profiled rails 12, leaving pipe stubs 31 attached to the cover plate 10 free, through which the support bolts 16 of the removable heat shield H engage for wedging plug sleeves 32 fastened to the cover plate 10.
  • the perforated support plate 15 of the heat shield H has hollow-cylindrical bases 34 on the upper side which fit into the pipe socket 31 and in which the support bolts 16 are movably mounted in a plane plane.
  • the support plate 15 is equipped with expansion pins 35 in a checkerboard manner, for holding a ceramic fiber mat 36, an oil paper or plastic film 37 and the refractory concrete layer 14, the positions 36, 37 and 14 being fitted by a peripheral frame 39 of the plate 15. If the length W of the cover W is longer, the heat shield H according to FIG. 8 is subdivided lengthwise into individually interchangeable and interchangeable shield sections 40, which in FIG.
  • each support bolt 16 is supported by a collar 42 in a tolerance chamber 44 of the base 34 having a cleaning opening 43, the cover plate 45 of which is welded when the support bolt 16 is inserted.
  • bases 34 are shortened by the gap width in the area of the gap 20. There, in the gap area, the thickness of the insulation 13 is reduced accordingly and the mounting frame 7 of the cover W is replaced by the supports 21 protected with refractory protective sleeves 47 (cf. FIG. 6).
  • the sleeves 47 which are advantageously prefabricated from refractory concrete, are part of the heat shield H or the shield sections 40 and, when the cover W is placed on the board surface 22 of the distributor V, engage in recesses 48 in the protective layer 23 covering this surface in the region of the gap 2, with a seal being provided ceramic fiber cord 49.
  • the opening lining 19 similar to the heat shield H, consists of a fiber mat 36 of a film 37 and of refractory concrete 14, which also includes the filling side of the pouring opening 9.
  • the burner openings 8 are unevenly constructed, their collar plates 55, which are oval in outline, fastened to the cover plate 10 and lined with ceramic fiber material 54, accommodate the burner blocks 18, as have a groove 57 on the oval sides 56, into which a retaining tab 58 fits a holding device 59 ( Figure 11).
  • the devices 59 surrounded by the refractory concrete layer, are arranged on the support plate 15 of the heat shield H, in that a sheet metal web 60 fastened there at a distance around the oval sides 56 in cross sleeves 61 carries pins 62 with split pins 63, which pass through holes 64 in the support plate 15 and the retaining tab 58 inserted and spread to connect the two parts.
  • each burner block 18 can be closed with the plug 25 mentioned at the beginning, which, according to FIG. Based on the heat shield H on the expansion pins 35 of the reinforcement pot 56, this is formed by a ceramic fiber mat 36, a film 37 and a refractory concrete layer 38.
  • the described cover W with its emptying gap 20 is suitable for special operating conditions.
  • the lining according to the invention applies to lids which have no lateral emptying gap.
  • the lining according to the invention also does justice to metallurgical vessels which are not used in continuous casting plants but are subject to similar operating conditions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP87109901A 1986-10-14 1987-07-09 Feuerfeste Auskleidung, insbesondere für Deckel von Wärmverteilern Expired - Lifetime EP0267366B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87109901T ATE53520T1 (de) 1986-10-14 1987-07-09 Feuerfeste auskleidung, insbesondere fuer deckel von waermverteilern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863634892 DE3634892A1 (de) 1986-10-14 1986-10-14 Feuerfeste auskleidung, insbesondere fuer deckel von zwischenbehaeltern
DE3634829 1986-10-14

Publications (2)

Publication Number Publication Date
EP0267366A1 EP0267366A1 (de) 1988-05-18
EP0267366B1 true EP0267366B1 (de) 1990-06-13

Family

ID=6311658

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87109901A Expired - Lifetime EP0267366B1 (de) 1986-10-14 1987-07-09 Feuerfeste Auskleidung, insbesondere für Deckel von Wärmverteilern

Country Status (3)

Country Link
EP (1) EP0267366B1 (enrdf_load_stackoverflow)
AT (1) ATE53520T1 (enrdf_load_stackoverflow)
DE (2) DE3634892A1 (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1003723A3 (fr) * 1989-03-03 1992-06-02 Rech S Et Dev Desaar Sa Couvercle de repartiteur de coulee continue.
FR2764368B1 (fr) * 1997-06-06 1999-07-16 Lorraine Laminage Equipement siderurgique a revetement refractaire non fissurant pour le traitement d acier liquide
CN110181032A (zh) * 2019-05-27 2019-08-30 武汉科技大学 一种冶金包盖

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH518761A (de) * 1970-12-18 1972-02-15 Concast Ag Deckel für Giessgefässe auf Stranggiessanlagen
CA1036791A (en) * 1973-12-11 1978-08-22 Hannes Vallak Method of manufacturing steel ingots or castings
US4339902A (en) * 1980-06-30 1982-07-20 Manville Service Corporation Multiple layer thermal insulation device
DE3231474A1 (de) * 1982-08-25 1984-03-01 Plibrico Co GmbH, 4000 Düsseldorf Schaulochstopfen
LU84481A1 (de) * 1982-11-19 1984-06-13 Wurth Paul Sa Schutzvorrichtung fuer pfannendeckel

Also Published As

Publication number Publication date
DE3634892C2 (enrdf_load_stackoverflow) 1988-07-28
EP0267366A1 (de) 1988-05-18
DE3634892A1 (de) 1988-04-28
DE3763154D1 (de) 1990-07-19
ATE53520T1 (de) 1990-06-15

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