EP1181489B1 - Lichtbogen- oder widerstandsschmelzofen - Google Patents

Lichtbogen- oder widerstandsschmelzofen Download PDF

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Publication number
EP1181489B1
EP1181489B1 EP00951282A EP00951282A EP1181489B1 EP 1181489 B1 EP1181489 B1 EP 1181489B1 EP 00951282 A EP00951282 A EP 00951282A EP 00951282 A EP00951282 A EP 00951282A EP 1181489 B1 EP1181489 B1 EP 1181489B1
Authority
EP
European Patent Office
Prior art keywords
arc
furnace
cooling
cooling device
resistance furnace
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
EP00951282A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1181489A1 (de
Inventor
Manfred Schubert
Peter Starke
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.)
SMS Siemag AG
Original Assignee
SMS Demag 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 SMS Demag AG filed Critical SMS Demag AG
Publication of EP1181489A1 publication Critical patent/EP1181489A1/de
Application granted granted Critical
Publication of EP1181489B1 publication Critical patent/EP1181489B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F27D19/00—Arrangements of controlling devices
    • 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
    • F27D2009/0005—Cooling of furnaces the cooling medium being a gas
    • F27D2009/0008—Ways to inject gases against surfaces

Definitions

  • the invention relates to a method and an apparatus for Operation of arc melting furnaces and / or Resistance melting furnaces, with a melting vessel for holding the melt, its lid and upper side wall up to or including the area of the slag zone a cooling medium, preferably water, are cooled.
  • Such cooled ovens are versatile known.
  • the hearth is the only uncooled area with a tendency to an elevated Wear of the refractory lining and increased Repair effort for the construction elements.
  • Arc melting furnaces with water-cooled lower and upper parts without fireproof Brick lining of the lower part are a. known in connection with the vacuum arc remelting of an electrode from US-A-3,723,632 and US-A-4,197,900.
  • those described in these documents are Furnaces neither from their constructive structure nor from their application forth with fireproof bricked arc or resistance melting furnaces (Tapping weights between 1 and 250 t and vessel diameter up to approx. 9 m) comparable.
  • the lower part of the furnace, the Stove bottom and the lower part of the side walls, also to cool, will have an overall positive impact on the service life of the refractory delivery as well as on the other construction elements of the furnace. Farther is also an advantageous cooling effect by the measure of the invention exerted on the bottom electrode.
  • the cooling according to the invention takes place by means of a shell-shaped one to be cooled Area of the lower furnace enveloping cooler through which the Coolant flows.
  • a gaseous substance for example, can be used as the cooling medium Air or a liquid substance, for example water, can be used.
  • Convection flow are used, being in the case of Air cooling the convection flow through a chimney can be reinforced with the drain opening of the Cooling device is connected. Through this chimney with advantage at the same time prevents that when tapping the A flame enters the cooling device can.
  • the cooling medium to promote by the cooler.
  • the coolant in a closed circuit through the cooling device promote.
  • the heated one can then be used advantageously Cooling medium to be cooled so that heat recovery becomes possible.
  • the flow rate and temperature of the Cooling medium determine the cooling capacity of the cooling device, which is why in an advantageous embodiment of the invention With the help of a measuring and control device through change this parameter the cooling capacity to the operating temperature of the oven can be adjusted.
  • the shell-like covering of the lower part of the furnace Cooling device is according to the invention in a simple manner educated.
  • a plate that corresponds to the furnace contour shaped and spaced from the furnace, a jacket-shaped cavity is created through which the Coolant flows.
  • the cavity has at least one Inlet opening and at least one outlet opening for the Cooling medium, which in the case of the convection flow Inlet opening conveniently in the middle of the bottom of the stove and the Arrange the drain opening on the side of the side walls is.
  • Inlet and outlet openings can also be arranged differently his.
  • cooling fins that on the furnace wall, for example by welding.
  • These cooling fins are designed to be optimal Ensure cooling effect without, however, the Flow resistance of the cooling device increases significantly increase, which is why it is expedient in the direction of flow are bent.
  • a measurement and Control system in which the measured values of the operating temperatures of the Inflow furnace with this heat recovery device and connected to the conveyor in this way an influence on the temperature and the amount of in the Cooling device inflowing cooling medium to be able to take.
  • FIG. 1 schematically shows an oven 1 with an oven base 2, lower side walls 3 on the melting vessel 4, upper side walls 5 and a lid 6.
  • the upper side Walls 5 reach down to about the melt contained melting vessel 4 and are like up to this area the cover 6 is provided with a water cooling 5 '.
  • the melting vessel 4 has a refractory lining 8 identified by the hatching and is formed by the furnace bottom 2 and the lower side walls 3. According to the invention, the melting vessel 4 is surrounded at a distance by a jacket 9, preferably made of sheet steel, which is shaped according to the contour of the outer furnace wall 7. The bowl-shaped cavity resulting in this way forms the cooling device 10 through which the cooling medium 14 flows.
  • Cooling fins 11 The coolant enters in the shown Embodiment in the middle of the bottom of the furnace 2 above Inlet opening 12 flows in the direction of the arrow to the side walls 3 and then leaves the cooling device 10 at the top of the Side walls 3 through the drain openings 13. Inside the Cooling device 10 are for better heat transfer and Swirling of the cooling medium 14 on the furnace wall 7 accordingly the flow direction of the cooling medium 14 formed Cooling fins 11 arranged.
  • FIG 2 is in the form of a block diagram Embodiment of a circuit cooling shown.
  • the Cooling device 10 of the furnace 1 or the melting vessel 4 is at its drain opening 13 via the drain line 16 with a Heat recovery device 18 connected.
  • this Heat recovery device 18 will when cooling the Melting vessel 4 heated cooling medium 14 under Cooled heat recovery.
  • a conveyor 17 for example a pump or a blower that is in the Inlet line 15 is arranged, which expresses from the Exhausted heat recovery device 18 now cooled Cooling medium 14 then via the inlet opening 12 back into the Cooling device 10.
  • the heat recovery device 18 and the Conveyor 17 are connected via a control line 21 Measuring and control device 19 connected by which Conveying capacity of the conveyor 17 and the temperature of the Cooling medium 14, in the heat recovery device 18, in Depending on the operating state of the furnace 1 regulated become.
  • the measuring and control device 19 is connected via a Measurement data line 20 with corresponding measuring devices on the furnace (the measuring devices are not shown) connected.
  • the invention is not based on that in the drawing figures illustrated embodiments limited the for better clarity, with an oversized Cooling device were shown.
  • the cooling device can shape according to the invention and size of the cooling device, number and arrangement of Inlet and outlet openings and the connection of the Cooling device with other devices (measuring and Control device, conveyor, etc.) designed variably be, if possible, with the basic principle of the invention low design and costs in a simple manner optimal cooling of the entire melting vessel bring about, is observed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Furnace Details (AREA)
  • Discharge Heating (AREA)
  • Resistance Heating (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP00951282A 1999-06-04 2000-06-03 Lichtbogen- oder widerstandsschmelzofen Expired - Lifetime EP1181489B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19925599 1999-06-04
DE19925599A DE19925599A1 (de) 1999-06-04 1999-06-04 Verfahren und Vorrichtung zum Betrieb von Lichtbogenschmelzöfen und/oder Widerstandsschmelzöfen
PCT/EP2000/005069 WO2000075588A1 (de) 1999-06-04 2000-06-03 Verfahren und vorrichtung zum betrieb von lichtbogenschmelzöfen und/oder widerstandsschmelzöfen

Publications (2)

Publication Number Publication Date
EP1181489A1 EP1181489A1 (de) 2002-02-27
EP1181489B1 true EP1181489B1 (de) 2003-09-03

Family

ID=7910235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00951282A Expired - Lifetime EP1181489B1 (de) 1999-06-04 2000-06-03 Lichtbogen- oder widerstandsschmelzofen

Country Status (18)

Country Link
US (1) US6693949B1 (pl)
EP (1) EP1181489B1 (pl)
JP (1) JP2003501612A (pl)
KR (1) KR100631326B1 (pl)
CN (1) CN1188650C (pl)
AT (1) ATE249023T1 (pl)
BR (1) BR0011317A (pl)
CA (1) CA2373041C (pl)
DE (2) DE19925599A1 (pl)
EG (1) EG22977A (pl)
ES (1) ES2206285T3 (pl)
MX (1) MXPA01012414A (pl)
MY (1) MY125130A (pl)
PL (1) PL194258B1 (pl)
RU (1) RU2246669C2 (pl)
TR (1) TR200103500T2 (pl)
UA (1) UA69460C2 (pl)
WO (1) WO2000075588A1 (pl)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004005060A1 (de) * 2003-08-26 2005-03-24 Sms Demag Ag Metallugisches Gefäß für ein Schmelzaggregat für flüssige Metalle
CN102192654A (zh) * 2010-03-04 2011-09-21 杭州杭锅工业锅炉有限公司 矿热炉炉盖余热锅炉冷却及余热利用系统
CN102878813B (zh) * 2012-10-26 2014-09-24 烽火通信科技股份有限公司 一种用于高温环境的冷却装置
US9936541B2 (en) * 2013-11-23 2018-04-03 Almex USA, Inc. Alloy melting and holding furnace
FI20165473A (fi) * 2016-06-07 2017-12-08 Outokumpu Oy Valokaariuunin pohjarakenne
IT201900020470A1 (it) * 2019-11-06 2021-05-06 Danieli Off Mecc Procedimento per la rilevazione di perdite di acqua da forni fusori in impianti di produzione di metalli o leghe e relativo impianto

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE522567C (de) 1925-12-06 1931-04-15 Polysius A G G Drehrohrofen zum Schmelzen von Zement
US2622862A (en) 1951-03-05 1952-12-23 Jordan James Fernando Melting furnace
FR1259396A (fr) 1960-02-18 1961-04-28 Emile Muller Soc Nouv Ets Perfectionnements apportés aux fours industriels ou autres
SU384435A1 (ru) 1971-03-17 1977-12-05 Bejzerov S M Схема водоснабжени вакуумной дуговой печи
US3785764A (en) 1972-08-16 1974-01-15 Fr Sa Continuous melting of very high melting point materials
GB1488784A (en) 1976-02-16 1977-10-12 Syaskin J Furnace for melting highly reactive metals
JPS5856076B2 (ja) * 1977-02-18 1983-12-13 石川島播磨重工業株式会社 製鋼用ア−ク炉における水冷壁の冷却水循環装置
JPS572880Y2 (pl) * 1977-12-21 1982-01-19
JPS5496705A (en) * 1978-01-17 1979-07-31 Mitsubishi Electric Corp Rotor of rotary electric machine
US4197900A (en) * 1978-03-16 1980-04-15 Beizerov Semen M Furnace for vacuum arc melting of highly reactive metals
US4235173A (en) * 1978-07-11 1980-11-25 Sharp Kenneth C Furnace cooling apparatus
JPS60194279A (ja) * 1984-03-16 1985-10-02 新日本製鐵株式会社 ア−ク炉用水冷パネル
JPS6340790Y2 (pl) * 1985-09-09 1988-10-25
US4870655A (en) * 1987-11-16 1989-09-26 Ward Vincent C Apparatus for recovery of metallics and non-metallics from spent catalysts
US5052018A (en) * 1989-10-12 1991-09-24 Deutsche Voest-Alpine Industrieanlagen Gmbh Anode for a direct current arc furnace
JPH0456726A (ja) * 1990-06-22 1992-02-24 Nippon Steel Corp 耐磨耗特性に優れた鋼管用鋼材の製造方法
DE4022720A1 (de) * 1990-07-17 1992-01-23 Flohe Gmbh & Co Untergefaess eines gleichstromlichtbogenofens
JP3687158B2 (ja) * 1995-11-30 2005-08-24 Ｊｆｅスチール株式会社 トピードカーの耐火物壁冷却方法

Also Published As

Publication number Publication date
CN1353806A (zh) 2002-06-12
MXPA01012414A (es) 2002-07-30
KR100631326B1 (ko) 2006-10-04
ATE249023T1 (de) 2003-09-15
MY125130A (en) 2006-07-31
ES2206285T3 (es) 2004-05-16
CN1188650C (zh) 2005-02-09
WO2000075588B1 (de) 2001-04-19
US6693949B1 (en) 2004-02-17
BR0011317A (pt) 2002-03-12
KR20020016820A (ko) 2002-03-06
CA2373041A1 (en) 2000-12-14
EG22977A (en) 2003-12-31
DE50003547D1 (de) 2003-10-09
RU2246669C2 (ru) 2005-02-20
TR200103500T2 (tr) 2002-05-21
CA2373041C (en) 2008-03-18
DE19925599A1 (de) 2000-12-07
WO2000075588A1 (de) 2000-12-14
UA69460C2 (uk) 2004-09-15
JP2003501612A (ja) 2003-01-14
PL194258B1 (pl) 2007-05-31
PL352089A1 (en) 2003-07-28
EP1181489A1 (de) 2002-02-27

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