EP0010286A1 - Kühlaggregat für die Wände elektrischer Öfen - Google Patents

Kühlaggregat für die Wände elektrischer Öfen Download PDF

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Publication number
EP0010286A1
EP0010286A1 EP79103972A EP79103972A EP0010286A1 EP 0010286 A1 EP0010286 A1 EP 0010286A1 EP 79103972 A EP79103972 A EP 79103972A EP 79103972 A EP79103972 A EP 79103972A EP 0010286 A1 EP0010286 A1 EP 0010286A1
Authority
EP
European Patent Office
Prior art keywords
elements
panel
panels
panel according
refractory material
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
EP79103972A
Other languages
English (en)
French (fr)
Other versions
EP0010286B1 (de
Inventor
Paolo Fontanini
Adriano Meroi
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.)
DANIELI ENGINEERING SpA
Danieli and C Officine Meccaniche SpA
Original Assignee
Danieli Eng SpA
DANIELI ENGINEERING SpA
Danieli and C Officine Meccaniche SpA
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 Danieli Eng SpA, DANIELI ENGINEERING SpA, Danieli and C Officine Meccaniche SpA filed Critical Danieli Eng SpA
Priority to AT79103972T priority Critical patent/ATE3587T1/de
Publication of EP0010286A1 publication Critical patent/EP0010286A1/de
Application granted granted Critical
Publication of EP0010286B1 publication Critical patent/EP0010286B1/de
Expired legal-status Critical Current

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Classifications

    • 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; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/24—Cooling arrangements
    • 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
    • F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements
    • 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
    • F27D1/14—Supports for linings
    • F27D1/145—Assembling elements
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/0002—Cooling of furnaces
    • F27D2009/0045—Cooling of furnaces the cooling medium passing a block, e.g. metallic
    • F27D2009/0048—Cooling of furnaces the cooling medium passing a block, e.g. metallic incorporating conduits for the medium

Definitions

  • This invention relates to panels cooled by water or other suitable liquid for forming the walls of electric furnaces, wherein, as well known, smelting takes place by electric discharges.
  • An ideal panel which may be part of a wall or may form the whole wall of an electric furnace should fulfill the following requirements:
  • steel blocks are used as having a built-in inner coil.
  • the water path is fixed therein, thus assuring a smooth flow, but the disadvantage arises that the panel smelting involves a complicated operation, the reduced size of the panel causing the increase of outside connections.
  • a further disadvantage is that during use the considerable size of the anel causes cracks on the melted inner wall thereor. In this case, it is also required to provide panels for each specific requirement. Thus, different panels should be provided for each type of furnace and,in a same furnace panels which are different as to characteristics and size according to the different use zones or sites.
  • the main object has been accomplished by providing to form a panel from a series of modular basic elements that can be coupled to one another in any desired chess-board like pattern.
  • these elements comprise an outer body which is inserted over a special tube or by a tube portion which is incorporated in an outer body, said tubes serving for the passage or cooling water or other fluid.
  • a preferred solution also provides that the panel surface facing inwardly of the furnace is shaped so as to retain therein insulating material comprising slags produced by the furnace itself, or refractory material which is suitably before hand.
  • the modular elements are assembled by welding to some of the elements comprising curves or bendings some tube lengths over which one or more elements provided with corresponding holes are inserted, then further curved elements are welded to the free ends of said tubes, thus providing a circuit or path for the cooling fluid.
  • Such a formed panel can now be bent for adaptation to the diameter of the furnace to which it will be applied.
  • portions of refractory material can be incorporated between the various modular elements.
  • a refractory base 12 In the zone underlying said two panels, there is a refractory base 12.
  • the supporting structure comprising two vertical tie rods 13 passing into holes 19 suitably provided in each of the modular elements. Said tie rods 13 are then secured to the furnace housing 14.
  • Each panel comprises several modular elements, which will now be described one by one.
  • Element 2 (Figs. 1, 2 and 3) comprises a block containing two parallel holes shown at 2a respectively, in which tubes 16 are inserted during assembling.
  • Elements 3 and 4 (Figs. 1 and 4) comprise blocks containing curved or bent tubes 3t and 4t, respectively.
  • Element 6 is quite similar to element 2, but the distance or spacing between the parallel holes 6a, and hence between tubes 16 therein contained is larger than that between tubes 16 of said element 2.
  • Element 5 comprises a semielement having a single hole 5a and is for completion of he panel.
  • element 15 is similar to element 5, but comprises a curved tube 8 or 9, respectively serving for the return and delivery of the cooling fluid.
  • the assembling of the various elements, so that the latter will form a panel may be effected by merely taking elements 3 or 4 comprising a curve or bending, preferably projecting out of the element, and welding on these tube ends some lengths of straight tube 16 of a suitable size, then inserting on such straight tubes the preselected tubes, such as those of type 2, 6 or the like, finally welding to the end of these straight tubes other curved elements 3 or 4 and two elements 15 with associated tube 8 and 9, thus forming a continuous circuit panel.
  • the panel thus obtained will be curved for adaptation to the furnace diameter.
  • refractory bricks 7 are incorporated in the panel, bricks which are supported by the adjoining elements.
  • the side wall of the furnace shown in Fig. 5 comprises nine panels, of which six are for example of a length L1 of 1910 mm and a height Hl of 1200 mm, two are of a length L2 of 1680 mm and a height H2 of 950 mm, and finally one of a length L3 of 920 mm and a height H3 of 530 mm.
  • the assembly of these panels may form the side walls of an electric furnace of about 50t, the circumference T of which is 16,014 mm.
  • reference numeral 26 denotes the tapping hole and 17 the casting or pouring level. Above this level, the side walls of the furnace first comprise a refractory 12 of a minimal height H4 of 550 mm, this height increasing in proximity of tapping hole 26 and of the gate for the admission of additive materials.
  • Fig. 5 three panels have been shown along with the structural modular elements thereof, the water circuit having been shown by arrows and dashed lines indicating the path for the tubes in the elements.
  • the elements are arranged so as to be offset in height, each row relative to the adjacent row, but this is not the only possible solution, as shown in one of the panels of Fig. 5.
  • the darkened zones in each of the panels are those in which refractory material 7 has been inserted.
  • panels can be provided of different characteristics along the height thereof, having for example lower zones with a larger cooling factor than that of the upper zones, as predicated. This can be done only because of the availability of small modular casting elements.
  • the furnace cooling can be differentiately balanced: at the hot locations, a higher cooling is provided, while at those less liable to heat, cooling is smaller.
  • each element is formed with cavities 2b and 6b, in which refractory material is inserted, and in any case against which the furnace slags will deposit, thus increasing the wall insulation and hence decreasing the heat exchange and increasing the panel life.
  • cavities may be of any shape and pattern as far as capable of retaining the insulating material.
  • refractory bricks along with cavities 2b and 6b carrying refractory material or slags allows a lower removal of calories from the cooling water and accordingly a lower energy consumption for steel smelting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Details (AREA)
  • Cartons (AREA)
EP79103972A 1978-10-23 1979-10-15 Kühlaggregat für die Wände elektrischer Öfen Expired EP0010286B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79103972T ATE3587T1 (de) 1978-10-23 1979-10-15 Kuehlaggregat fuer die waende elektrischer oefen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT29007/78A IT1160001B (it) 1978-10-23 1978-10-23 Pannelli raffreddati per pareti di forni elettrici
IT2900778 1978-10-23

Publications (2)

Publication Number Publication Date
EP0010286A1 true EP0010286A1 (de) 1980-04-30
EP0010286B1 EP0010286B1 (de) 1983-05-25

Family

ID=11225650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79103972A Expired EP0010286B1 (de) 1978-10-23 1979-10-15 Kühlaggregat für die Wände elektrischer Öfen

Country Status (5)

Country Link
EP (1) EP0010286B1 (de)
AT (1) ATE3587T1 (de)
DE (1) DE2965520D1 (de)
ES (1) ES246367Y (de)
IT (1) IT1160001B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0085461A1 (de) * 1982-01-29 1983-08-10 BBC Aktiengesellschaft Brown, Boveri & Cie. Flüssigkeitsgekühlte Gefässwände für Lichtbogenöfen
EP0142399A1 (de) * 1983-09-21 1985-05-22 Sollac Plattenkühler für Hochöfen
DE4431293A1 (de) * 1994-09-02 1996-03-07 Abb Management Ag Ofengefäß für einen Gleichstrom-Lichtbogenofen
EP0918092A1 (de) * 1997-11-20 1999-05-26 Sms Schloemann-Siemag Aktiengesellschaft Kühlelemente für Schachtöfen
WO2002046478A2 (de) * 2000-12-09 2002-06-13 Didier - M & P Energietechnik Gmbh Kühleinrichtung für schachtöfen sowie mit einer solchen kühleinrichtung ausgestattete schachtöfen

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE655249C (de) * 1938-01-12 Emil Grimm Kuehlkasten fuer metallurgische OEfen
DE957758C (de) * 1957-01-17 Ernst Thomas, Hemer (Westf) Kuhlkasten, welcher auswechselbar in Ausnehmungen der Wände von Schmelzofen, insbesondere Hochofen, einsetzbar ist
FR2021222A1 (de) * 1968-10-22 1970-07-17 Mitsubishi Heavy Ind Ltd
US3829595A (en) * 1972-01-25 1974-08-13 Ishikawajima Harima Heavy Ind Electric direct-arc furnace
DE2354570A1 (de) * 1973-02-08 1974-08-29 Ishikawajima Harima Heavy Ind Schmelzofen
DE2719165B1 (de) * 1977-04-29 1978-07-06 Thyssen Huette Ag Kuehlelement fuer einen metallurgischen Ofen
GB2006410A (en) * 1977-10-11 1979-05-02 Demag Ag Metallurgical vessel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5832313B2 (ja) * 1977-12-06 1983-07-12 山陽特殊製鋼株式会社 電気ア−ク炉用水冷パネル

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE655249C (de) * 1938-01-12 Emil Grimm Kuehlkasten fuer metallurgische OEfen
DE957758C (de) * 1957-01-17 Ernst Thomas, Hemer (Westf) Kuhlkasten, welcher auswechselbar in Ausnehmungen der Wände von Schmelzofen, insbesondere Hochofen, einsetzbar ist
FR2021222A1 (de) * 1968-10-22 1970-07-17 Mitsubishi Heavy Ind Ltd
US3829595A (en) * 1972-01-25 1974-08-13 Ishikawajima Harima Heavy Ind Electric direct-arc furnace
DE2354570A1 (de) * 1973-02-08 1974-08-29 Ishikawajima Harima Heavy Ind Schmelzofen
DE2719165B1 (de) * 1977-04-29 1978-07-06 Thyssen Huette Ag Kuehlelement fuer einen metallurgischen Ofen
GB2006410A (en) * 1977-10-11 1979-05-02 Demag Ag Metallurgical vessel

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0085461A1 (de) * 1982-01-29 1983-08-10 BBC Aktiengesellschaft Brown, Boveri & Cie. Flüssigkeitsgekühlte Gefässwände für Lichtbogenöfen
EP0142399A1 (de) * 1983-09-21 1985-05-22 Sollac Plattenkühler für Hochöfen
DE4431293A1 (de) * 1994-09-02 1996-03-07 Abb Management Ag Ofengefäß für einen Gleichstrom-Lichtbogenofen
US5719897A (en) * 1994-09-02 1998-02-17 Asea Brown Boveri Ag Furnace vessel for a direct current arc furnace
EP0918092A1 (de) * 1997-11-20 1999-05-26 Sms Schloemann-Siemag Aktiengesellschaft Kühlelemente für Schachtöfen
WO2002046478A2 (de) * 2000-12-09 2002-06-13 Didier - M & P Energietechnik Gmbh Kühleinrichtung für schachtöfen sowie mit einer solchen kühleinrichtung ausgestattete schachtöfen
WO2002046478A3 (de) * 2000-12-09 2002-08-29 Didier M & P Energietechnik Gm Kühleinrichtung für schachtöfen sowie mit einer solchen kühleinrichtung ausgestattete schachtöfen

Also Published As

Publication number Publication date
IT7829007A0 (it) 1978-10-23
ES246367Y (es) 1980-08-16
IT1160001B (it) 1987-03-04
ES246367U (es) 1980-02-01
EP0010286B1 (de) 1983-05-25
ATE3587T1 (de) 1983-06-15
DE2965520D1 (en) 1983-07-07

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