EP1181489A1 - Procede et dispositif permettant de faire fonctionner des fours de fusion a arc et/ou a resistance - Google Patents

Procede et dispositif permettant de faire fonctionner des fours de fusion a arc et/ou a resistance

Info

Publication number
EP1181489A1
EP1181489A1 EP00951282A EP00951282A EP1181489A1 EP 1181489 A1 EP1181489 A1 EP 1181489A1 EP 00951282 A EP00951282 A EP 00951282A EP 00951282 A EP00951282 A EP 00951282A EP 1181489 A1 EP1181489 A1 EP 1181489A1
Authority
EP
European Patent Office
Prior art keywords
cooling
cooling medium
furnace
cooling device
side walls
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
EP00951282A
Other languages
German (de)
English (en)
Other versions
EP1181489B1 (fr
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/fr
Application granted granted Critical
Publication of EP1181489B1 publication Critical patent/EP1181489B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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 a device for operating Li arc melting furnace and / or
  • Resistance melting furnaces / with a melting vessel for holding the melt, the lid and upper side wall of which are cooled to or including the area of the slag zone by a cooling medium, preferably water.
  • Such cooled furnaces are known in a versatile design.
  • the base of the hearth is the only uncooled area with a tendency to increased wear of the refractory lining and increased repair work on the construction elements.
  • the measure of the invention likewise to cool the lower region of the furnace, the hearth floor and the lower part of the side walls, has an overall beneficial effect on the service life of the refractory delivery and on the further structural elements of the furnace. Furthermore, the measure of the invention also exerts an advantageous cooling effect on the floor electrode
  • the cooling according to the invention takes place by means of a cooling device, which surrounds the area of the lower furnace to be cooled and through which the cooling medium flows.
  • a gaseous substance for example air or a liquid substance, for example water, can be used as the cooling medium.
  • the convection flow can be used to maintain the flow of the cooling medium within the cooling device; in the case of air cooling, the convection flow can be reinforced by a chimney which is connected to the drain opening of the cooling device. This chimney also advantageously prevents flames from entering the cooling device when the furnace is tapped.
  • cooling medium can be conveyed through the cooling device with the aid of a delivery device arranged outside the cooling device, for example a pump or a blower.
  • a delivery device arranged outside the cooling device, for example a pump or a blower.
  • the coolant can be conveyed through the cooling device in a closed circuit.
  • the heated cooling medium can then advantageously be cooled in such a way that heat recovery is possible.
  • the flow rate and the temperature of the cooling medium determine the cooling capacity of the cooling device, which is why, in an advantageous embodiment of the invention, the cooling capacity can be adapted to the operating temperature of the furnace by changing these parameters by changing these parameters.
  • the cooling device enveloping the lower part of the furnace is designed in a simple manner according to the invention. Through a plate that corresponds to the furnace contour -. -
  • a jacket-shaped cavity is created through which the cooling medium flows.
  • the cavity has at least one inlet opening and at least one outlet opening for the cooling medium, whereby in the case of convection flow the inlet opening is expediently to be arranged in the center at the bottom of the stove bottom and the outlet opening at the top on the side walls.
  • the inlet and outlet openings can also be arranged differently.
  • cooling fins are located within the cavity of the cooling device and are attached to the furnace wall, for example by welding. These cooling fins are designed in such a way that they ensure an optimum cooling effect without, however, significantly increasing the flow resistance of the cooling device, which is why they are expediently bent in the direction of flow.
  • a heat recovery device is arranged in the cooling circuit lines next to the conveyor for maintaining the circuit flow, in which the heated cooling medium is cooled and the heat released is used or stored.
  • a measuring and control system into which measured values of the operating temperatures of the furnace are incorporated, with this heat recovery device and connected to the conveying device in order in this way to be able to influence the temperature and the amount of the cooling medium flowing into the cooling device.
  • Fig. 2 is a Blockdi agramra a Kreislaufkü treatment.
  • Figure 1 shows schematically a furnace 1 with a furnace bottom 2, lower side walls 3 on the melting vessel 4, upper side walls 5 and a lid 6.
  • the upper side walls 5 extend down to about the melting vessel 4 containing the melt and are up to this Provide area like cover 6 with water cooling 5 1 .
  • the melting vessel 4 has a fireproof lining 8 identified by the hatching and is formed by the furnace bottom 2 and the lower side walls 3.
  • the melting vessel 4 is preferably surrounded by a jacket 9 made of sheet steel, which corresponds to the contour of the outer furnace wall 7 is shaped.
  • the resulting bowl-shaped cavity forms the cooling device 10 through which the cooling medium 14 flows.
  • the coolant enters in the illustrated embodiment in the middle of the bottom of the furnace 2 via the inlet opening 12, flows in the direction of the arrow to the side walls 3 and then leaves the cooling device 10 at the upper end of the side walls 3 through the outlet openings 13.
  • Inside the cooling device 10 are for better heat transfer and arranged for the swirling of the cooling medium 14 on the furnace wall 7 in accordance with the direction of flow of the cooling medium 14 cooling fins 11.
  • FIG. 2 shows an exemplary embodiment of a circuit cooling in the form of a block diagram.
  • the cooling device 10 of the furnace 1 or of the melting vessel 4 is connected at its outlet opening 13 via the outlet line 16 to a heat recovery device 18.
  • the cooling medium 14 heated during the cooling of the melting vessel 4 is cooled with heat recovery.
  • the heat recovery device 18 and the conveying device 17 are connected via control lines 21 to a measuring and regulating device 19, by means of which the conveying capacity of the conveying device 17 and the temperature of the cooling medium 14 in the heat recovery device 18 are regulated as a function of the operating state of the furnace 1 .
  • the measuring and control device 19 via a measurement data line 20 with corresponding measuring devices on the furnace (the measuring devices are not shown) connected.
  • the invention is not limited to the exemplary embodiments shown in the drawing figures, which, for better clarity, have been shown with an oversized cooling device.
  • the shape and size of the cooling device, the number and arrangement of the inlet and outlet openings and the linking of the cooling device with other devices can be designed variably if the basic principle of the invention, with as little construction and cost as possible in a simple manner to bring about optimal cooling of the entire melting vessel, 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)
  • Furnace Details (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Discharge Heating (AREA)
  • Resistance Heating (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP00951282A 1999-06-04 2000-06-03 Four de fusion a arc ou a resistance Expired - Lifetime EP1181489B1 (fr)

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 (fr) 1999-06-04 2000-06-03 Procede et dispositif permettant de faire fonctionner des fours de fusion a arc et/ou a resistance

Publications (2)

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

Family

ID=7910235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00951282A Expired - Lifetime EP1181489B1 (fr) 1999-06-04 2000-06-03 Four de fusion a arc ou a resistance

Country Status (18)

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

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 (fr) * 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 (fr) * 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0075588A1 *

Also Published As

Publication number Publication date
EG22977A (en) 2003-12-31
MY125130A (en) 2006-07-31
BR0011317A (pt) 2002-03-12
CN1353806A (zh) 2002-06-12
RU2246669C2 (ru) 2005-02-20
WO2000075588A1 (fr) 2000-12-14
CA2373041A1 (fr) 2000-12-14
ES2206285T3 (es) 2004-05-16
CN1188650C (zh) 2005-02-09
KR100631326B1 (ko) 2006-10-04
DE50003547D1 (de) 2003-10-09
PL194258B1 (pl) 2007-05-31
WO2000075588B1 (fr) 2001-04-19
JP2003501612A (ja) 2003-01-14
PL352089A1 (en) 2003-07-28
MXPA01012414A (es) 2002-07-30
KR20020016820A (ko) 2002-03-06
TR200103500T2 (tr) 2002-05-21
ATE249023T1 (de) 2003-09-15
UA69460C2 (uk) 2004-09-15
CA2373041C (fr) 2008-03-18
DE19925599A1 (de) 2000-12-07
US6693949B1 (en) 2004-02-17
EP1181489B1 (fr) 2003-09-03

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