EP0032186A1 - Garnissage pour fours industriels, en particulier pour fours à cuve, comme hauts-fourneaux ou analogues - Google Patents

Garnissage pour fours industriels, en particulier pour fours à cuve, comme hauts-fourneaux ou analogues Download PDF

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Publication number
EP0032186A1
EP0032186A1 EP80107418A EP80107418A EP0032186A1 EP 0032186 A1 EP0032186 A1 EP 0032186A1 EP 80107418 A EP80107418 A EP 80107418A EP 80107418 A EP80107418 A EP 80107418A EP 0032186 A1 EP0032186 A1 EP 0032186A1
Authority
EP
European Patent Office
Prior art keywords
layer
furnaces
furnace
thermal conductivity
cooling
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
EP80107418A
Other languages
German (de)
English (en)
Other versions
EP0032186B1 (fr
Inventor
Albrecht Dr. Dipl.-Ing. Fickel
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.)
Saint Gobain IndustrieKeramik Roedental GmbH
Original Assignee
Annawerk Keramische Betriebe GmbH
Annawerk Keramische Betriebe 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
Application filed by Annawerk Keramische Betriebe GmbH, Annawerk Keramische Betriebe GmbH filed Critical Annawerk Keramische Betriebe GmbH
Priority to AT80107418T priority Critical patent/ATE3061T1/de
Publication of EP0032186A1 publication Critical patent/EP0032186A1/fr
Application granted granted Critical
Publication of EP0032186B1 publication Critical patent/EP0032186B1/fr
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/04—Blast furnaces with special refractories
    • C21B7/06—Linings for furnaces

Definitions

  • the invention relates to the lining for industrial furnaces, in particular shaft furnaces, such as blast furnaces or the like, with cooling boxes which project inwards from the furnace shell and are arranged at a distance and which are in a layer made of a material with high thermal conductivity and a layer against the interior of the furnace covering layer of a material of high abrasion resistance are embedded.
  • Such a lining has become known, for example, from DE-OS 24 43 305.
  • layers of graphite or semi-graphite are arranged between several rows of cooling plates, which are covered with a silicon carbide layer towards the inside of the furnace, the layers of semi-graphite or graphite with the layer of silicon carbide by forming these layers in shape are mutually interlocked by rings of different diameters.
  • Such a lining is suitable if the cooling plate are at relatively short distances from one another in the vertical and horizontal directions.
  • the cooling plate For financial, but also for technical reasons, it is often required to arrange the cooling plate at comparatively large vertical and horizontal distances, which then shows that during operation of the industrial furnace, heavily corroded areas occur between the cooling plates, which form pocket-like inside the lining . In addition to abrasion effects, the formation of these pockets is primarily determined by the course of isotherms in the masonry. The increasing wear of the masonry with increasing distance from the next cooling plate indicates insufficient cooling in the area of the most wear in the middle of these pockets. In many cases it is not possible to reduce the distance between the cooling plates to such an extent that the pocket formation becomes insignificant or even disappears.
  • the object of the invention is to improve the durability of the delivery regardless of the type of cooling used for the furnace shell.
  • refractory materials of different technical properties such as thermal conductivity, abrasion resistance, strength, corrosion resistance and resistance to temperature changes, are combined with one another in such a way that isotherms arise in the masonry that run as parallel as possible to the original masonry surface.
  • Fig. 1 denotes the furnace shell, for example of a blast furnace, in the delivery, the original front of which is designated 2 on the working side, cooling boxes 3 are used.
  • cooling boxes are also designated 3, between which there are pockets 4 for deliveries according to the prior art, as indicated in section in Fig. 1.
  • the tank 1 is lined on the inside with a ramming compound 16, which forms an insulating layer. It is followed by a layer 17 of firebricks, in front of which a layer 18 of graphite or semi-graphite blocks is placed, which are clad against the inside of the furnace with a layer 19 of self-bonded silicon carbide.
  • the coolers are designated 13.
  • the principle of the invention can be seen from FIG. 3 in that the layer 19 of self-bonded silicon carbide is reduced in thickness in the middle of the distance between two cooling boxes 13, as can be seen at 20 with appropriate reinforcement of the layer behind.
  • the four layers of ceramic materials used have different properties.
  • the ramming mass 16 is a thermally insulating mass.
  • Commercial high-quality firebricks, as indicated at 17, have a comparatively low thermal conductivity.
  • the layer or stones 18 made of graphite or semi-graphite have a very high thermal conductivity, while the layer or stones 19 made of silicon carbide have comparatively high thermal conductivity and, moreover, have very high erosion and corrosion resistance with high temperature change independence.
  • Fig. 4 shows the application of the principle of the invention to a delivery using combined cooling systems.
  • cooling boxes 43 and the furnace 41 but here cooling plates (staves) are laid, which are denoted by 51.
  • the thermally insulating ramming compound is omitted here.
  • the combined cooling system within the furnace shell 41 consists of cooling plates 51 and a double jacket cooling 53, which may only be used as an alternative.
  • the middle lining elements 50 are substantially reduced in thickness, similar to the infeed according to FIG. 3, so that the elements made of graphite or semi-graphite protrude further into the furnace interior.
  • these elements 52 protrude through the lining made of silicon carbide in a manner similar to section 4a.
  • the combined cooling system consists of cooling boxes 43 and a double jacket 53.
  • the silicon carbide layer in the middle area between the cooling boxes is even reduced to zero, so that here the graphite or carbon material continuously from the peripherally installed cooling unit, for example a cooling plate or the double jacket, to the Work surface is enough. This is sometimes necessary if large cooling plate clearances or large wall thicknesses of the infeed are intended.
  • infeed takes place in accordance with Example 4b, in which the highly heat-conducting graphite, semi-graphite or carbon material retains wear-reducing silicon carbide facing, even in the area of the greatest cooling plate distance.

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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)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
EP80107418A 1979-11-28 1980-11-27 Garnissage pour fours industriels, en particulier pour fours à cuve, comme hauts-fourneaux ou analogues Expired EP0032186B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80107418T ATE3061T1 (de) 1979-11-28 1980-11-27 Ausmauerung fuer industrieoefen, insbesondere schachtoefen, wie hochoefen o. dgl.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2947912 1979-11-28
DE19792947912 DE2947912A1 (de) 1979-11-28 1979-11-28 Ausmauerung fuer industrieoefen, insbesondere schachtoefen, wie hochoefen o.dgl.

Publications (2)

Publication Number Publication Date
EP0032186A1 true EP0032186A1 (fr) 1981-07-22
EP0032186B1 EP0032186B1 (fr) 1983-04-13

Family

ID=6087088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80107418A Expired EP0032186B1 (fr) 1979-11-28 1980-11-27 Garnissage pour fours industriels, en particulier pour fours à cuve, comme hauts-fourneaux ou analogues

Country Status (3)

Country Link
EP (1) EP0032186B1 (fr)
AT (1) ATE3061T1 (fr)
DE (1) DE2947912A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006040394A1 (fr) * 2004-10-14 2006-04-20 Outokumpu Technology Oyj Four de metallurgie

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8702601U1 (fr) * 1987-02-20 1987-05-21 Carsjens, Ullrich, 4050 Moenchengladbach, De
DE10310974A1 (de) * 2003-03-13 2004-10-07 Thermoselect Ag Vorrichtung zur Reaktorinnenkühlung des Thermoselect Hochtemperatur-Reaktors
KR101435079B1 (ko) 2013-10-07 2014-08-27 주식회사 포스코건설 용광로의 냉각반용 보호장치 및 이를 구비한 용광로

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1031053A (en) * 1963-04-23 1966-05-25 Carborundum Co Improvements in or relating to linings for blast furnaces or the like

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1127033B (de) * 1957-08-09 1962-04-05 Strico Ges Fuer Metallurg Und Futter fuer wassergekuehlte Schachtoefen
GB1126076A (en) * 1966-04-01 1968-09-05 Morganite Crucible Ltd Blast furnaces provided with refractory linings
DE2050443B2 (de) * 1970-10-14 1973-06-07 August Thyssen Hütte AG, 4100 Duis bürg Hochofenschacht
NL170437C (nl) * 1973-09-12 1982-11-01 Estel Hoogovens Bv Wandconstructie van een schachtoven.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1031053A (en) * 1963-04-23 1966-05-25 Carborundum Co Improvements in or relating to linings for blast furnaces or the like

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
STAHL UND EISEN, Band 91, Nr. 19 16. September 1976 Dusseldorf J. MAES et al. "Messung und Berechnung der Temperaturverteilung in einer mit Graphit- und Halbgraphitsteinen ausgekleideten Hochofenrast" Seiten 1098 bis 1101. *
STAHL UND EISEN, Band 96, Nr. 4 26. Februar 1976 Dusseldorf D. PASCHMANN "Einfluss der Schuttung auf die Temperaturbeanspruchung der Hochofenwand" Seiten 160 bis 164. *
STAHL UND EISEN, Band 96, Nr. 8 22. April 1976 Dusseldorf "Siliciumcarbidsteine fur den unteren Hochofenschacht" Seiten 411 bis 412. *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006040394A1 (fr) * 2004-10-14 2006-04-20 Outokumpu Technology Oyj Four de metallurgie
EA011189B1 (ru) * 2004-10-14 2009-02-27 Ототек Оюй Металлургическая печь
CN101040161B (zh) * 2004-10-14 2010-05-26 奥图泰有限公司 冶金炉

Also Published As

Publication number Publication date
EP0032186B1 (fr) 1983-04-13
DE2947912A1 (de) 1981-07-23
ATE3061T1 (de) 1983-04-15

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