EP0170809A2 - Four à arc muni d'un espace de chargement sur le côté - Google Patents

Four à arc muni d'un espace de chargement sur le côté Download PDF

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Publication number
EP0170809A2
EP0170809A2 EP85106662A EP85106662A EP0170809A2 EP 0170809 A2 EP0170809 A2 EP 0170809A2 EP 85106662 A EP85106662 A EP 85106662A EP 85106662 A EP85106662 A EP 85106662A EP 0170809 A2 EP0170809 A2 EP 0170809A2
Authority
EP
European Patent Office
Prior art keywords
arc
electrode
furnace
charge
receiving space
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
EP85106662A
Other languages
German (de)
English (en)
Other versions
EP0170809A3 (en
EP0170809B1 (fr
Inventor
Gerhard Fuchs
Joachim Ehle
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.)
Primetals Technologies Germany GmbH
Original Assignee
Fuchs Systemtechnik 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 Fuchs Systemtechnik GmbH filed Critical Fuchs Systemtechnik GmbH
Priority to EP88105416A priority Critical patent/EP0291680B2/fr
Priority to AT85106662T priority patent/ATE37947T1/de
Publication of EP0170809A2 publication Critical patent/EP0170809A2/fr
Publication of EP0170809A3 publication Critical patent/EP0170809A3/de
Application granted granted Critical
Publication of EP0170809B1 publication Critical patent/EP0170809B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/08—Heating by electric discharge, e.g. arc discharge
    • 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; Electric arc furnaces ; Tank furnaces
    • F27B3/10—Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
    • F27B3/18—Arrangements of devices for charging
    • F27B3/183—Charging of arc furnaces vertically through the roof, e.g. in three points
    • F27B3/186—Charging in a vertical chamber adjacent to the melting chamber
    • 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
    • F27D1/18—Door frames; Doors, lids or removable covers
    • F27D1/1808—Removable covers
    • F27D1/1816—Removable covers specially adapted for arc furnaces
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/10—Mountings, supports, terminals or arrangements for feeding or guiding electrodes

Definitions

  • the invention relates to an electric arc furnace with at least one receiving space for charging goods, which is provided on one side of the furnace vessel, according to the preamble of claim 1.
  • the arc furnace of this type which has become known from EP-A1-56 773, the arc furnace has a lateral bulge, the sole of which is higher than the sole of the hearth.
  • the input material is charged in this bulged part and stored as a pile on the raised sole.
  • the hot furnace gases are passed through the upper part of this heap, and the heap is also exposed to the radiant heat of the arc furnace and is thereby heated.
  • the insert is preheated g ut respectively from the lowermost portion of the muck intermittently conveyed into the oven hearth by a slider.
  • the sole of the side bulge of the furnace is sloping towards the stove.
  • an arc furnace with a shaft-shaped charge preheater arranged on one side of the furnace vessel is known, the interior of which is connected to the interior of the furnace vessel by a connecting zone provided approximately at the middle height of the furnace vessel, which serves on the one hand to introduce the hot furnace gases generated during the melting process into a column of feed material formed in the charge material preheater and pass it in countercurrent to the sinking feed material, preheat it and, on the other hand, as a discharge opening for the heated charge material in the bottom area of the charge material preheater.
  • a hydraulically actuated slide By means of a hydraulically actuated slide, the preheated bottom section of the charge column can be conveyed through the connection zone into the oven hearth, i.e.
  • a charging device attached to the top of the charge material preheater allows the charge material to be fed continuously into the preheater and a gas outlet located in the vicinity thereof allows the furnace gases cooled in the heat exchange with the charge material within the charge material column to be drawn off.
  • the object of the invention is to increase the possible heat transfer into the charge material in an arc furnace according to the preamble of claim 1 and thus to shorten the heating time of the charge material. It should make better use of the radiant heat and the resulting hot furnace gases when heating the charging material and thereby improve the thermal efficiency.
  • the heat load on the furnace walls should be reduced.
  • a continuous flow of material from the receiving space for the goods to be charged into the oven hearth and thus more uniform operating conditions are to be made possible. Temperature fluctuations and fluctuations in the chemical composition of the weld pool should be reduced.
  • the electrodes can be brought into the immediate vicinity of the receiving space for the cargo to be provided on one side of the furnace vessel, so that the radiant heat generated by the arcs is intensified
  • Charge material can act and at the same time the radiation exposure of the free wall areas of the arc furnace is reduced.
  • the hot gases that are generated in the area of the arcs, particularly when coal and other feedstocks are added, are introduced directly into the charge material, so that their sensible heat can be optimally utilized.
  • burners and / or nozzles are additionally provided on the lower area of the receiving space for the goods to be charged, this area can be additionally heated or oxygen, coal or other additives can be introduced for temperature control and control of the composition of the melt pool.
  • the bottom of the receiving space for the charge is arranged so deep that when a liquid sump is formed in the furnace, it extends into the receiving space and enables a direct material and conductive heat exchange in the lowest zone of the accumulated charge. In this way, an additional heat flow is made possible for the lowest zone of the charge column standing in the liquid sump. In this zone there is an intensive exchange of material and heat, which is caused by the bath movement that always occurs in the stove. In this way, the melt overheated in the area of the arcs emits heat in this zone, as a result of which the material which has already been preheated is melted in this zone.
  • the liquefied material flows continuously from the receiving space for the charge material into the molten bath of the furnace, so that the operating conditions can be kept largely constant here.
  • chemical-metallurgical reactions such as slag formation, carburization, etc., which can be promoted by the targeted addition of oxygen, coal or additives.
  • the thermal conditions in the oven hearth be kept constant and set to an optimal working point, but also larger fluctuations in the composition of the melt can be prevented or the composition of the melt can be controlled.
  • the furnace assembly shown in FIGS. 1 and 2 in a vertical section and in a plan view contains an arc furnace 1 from an furnace vessel 2 and a removable cover 3, through which 3 electrodes 4/1, 4/2 and 4/3 are passed.
  • the furnace vessel 2 is formed by a stove 5 made of a refractory brick lining and preferably by liquid-cooled wall elements 6.
  • a shaft-shaped charge preheater 7 with a receiving space (interior) 8 for charge goods is arranged in an area adjacent to its bottom 9
  • the charge preheater 7 has a gas-tight loading device 12 in its upper area, e.g. a double bell closure of known type, and a gas outlet 13 to which a suction device, not shown, is connected.
  • a gas-tight loading device 12 in its upper area, e.g. a double bell closure of known type, and a gas outlet 13 to which a suction device, not shown, is connected.
  • the charge preheater 7 extends approximately over a quarter of the circumference of the furnace vessel 2, the shaft wall 14 of the charge preheater facing the furnace vessel being adapted to the outer contour of the furnace vessel. From Fig. 1 it can be seen that the cross section of the interior 8 of the charge preheater 7 extends downward. This is intended to enable unhindered sinking of the cargo in the cargo preheater. Burners 15 or nozzles for blowing in gases, such as oxygen, or solids, such as coal or aggregates, open into the connecting zone 10.
  • gases such as oxygen, or solids, such as coal or aggregates
  • the feed material 16 charged in the charge material preheater 7 can consist of metal scrap, in particular steel scrap and other iron carriers, such as lumpy pig iron, sponge iron and aggregates. It forms in the charge material preheater 7 a gas-permeable pouring column referred to as the charge goods column 17.
  • the molten metal (sump) formed in the arc furnace 1 is designated 18, the melt level 19.
  • An eccentric bottom cut 21 is provided in the bottom of the oven hearth 5, which is shown in broken lines in FIG. 2.
  • the furnace vessel 2 is designed to be tiltable.
  • the tilting level, ie the level in which the tilting movement takes place, is designated by 22.
  • the charge preheater 7 is arranged in a direction transverse to the tilting plane of the furnace vessel.
  • Each of the electrodes 4/1 to 4/3 contains a liquid-cooled metallic upper part 23 and a lower part 24 which forms the electrode tip and is made of an edible material, such as graphite, which is detachably attached to the upper part 23.
  • Each electrode 4/1, 4/2 or 4/3 is clamped with its upper part 23 into an electrode support arm 25/1, 25/2 or 25/3, which is supported by an electrode lifting mechanism 26/1, 26/2 or 26/3 can be raised and lowered.
  • the electrode hoists 26/1 to 26/3 are located on the receiving space for the cargo, i.e. the shaft-shaped charge material preheater 7 opposite side next to the furnace vessel 2.
  • the guides 27/1 and 27/3 of the two outer electrode support arms 25/1 and 25/3 are each curved outwards, so that when the electrode support arms 25/1 and 25/3 move back and forth, they move by a limited angle in the direction horizontal plane are pivotable.
  • the trajectories of the central axes of the electrodes 4/1 to, 4/3 during the forward and backward movement of the electrodes Support arms along the guides 27/1 to 27/3 are shown in broken lines in Fig.
  • the movement paths 28/1 and 28/3 are also curved outwards.
  • the ends of the trajectories are marked by cross lines, which thus illustrate the extreme positions of the central axes of the electrodes. In the left extreme position shown in FIG. 2, the electrodes 4/1, 4/2 and 4/3 each have approximately the same distance from the receiving space 8.
  • the horizontal guides 27/1 to 27/3 for the electrode support arms 25/1 to 25/3 can be designed according to FIG. 3.
  • This figure shows the section III-III of FIG. 2 on an enlarged scale.
  • the guide 27/2 contains two mutually opposite, trapezoidal cross-section slide rails 29/2, each with an upper and a lower slide path 30/2, which through a pad made of sliding material.
  • the sliding surfaces of a slide 31/2 rest on the slideways, which thereby fixes its position and is displaceable along the rails 29/2.
  • the slide 31/2 carries the support arm 25/2, which is attached to the slide 31/2 with the interposition of a cover plate 32/2 and an insulating plate 33/2 by means of a screw bolt 34/2.
  • the insulating plate 33/2 which has the same length as the slide 31/2, is also shown in part in FIG. 2. From this illustration it can be seen that the slide 31/2 extends for stability reasons over about a third to half the length of the guide 27/2.
  • the guides 27/1 and 27/3 for the two outer support arms 25/1 and 25/3 have a similar structure. As can be seen from Fig. 2, however, they are curved, i.e. the rails 29/1 and 29/3 in question also have a corresponding curvature in plan view.
  • the cover has a slot-shaped electrode passage for each electrode which is adapted to its movement path.
  • the slot-shaped electrode bushings are covered by cover slats 35/1, 36/1, 37/1 to 35/3, 36/3, 37/3 which can be moved along the horizontal movement path, one of which has a passage opening adapted to the electrode cross section.
  • the cover slats close the slot-shaped electrode feedthrough in the cover in every position of the electrode along its path of movement 28/1, 28/2 and 28/3.
  • the slot-shaped electrode leadthrough in the cover 3 visible in the illustration according to FIGS. 4 and 5 is designated 38/1
  • the passage opening in the cover plate 36/1 adapted to the electrode cross section is designated 39/1.
  • the ends of the middle cover lamella 36/1 each overlap one end of the outer cover lamellae 35/1 and 37/1.
  • drivers 40/1 are provided which, when the electrode 4/1 is displaced along the movement path 28/1 and the movement of the middle cover slat 36/1 caused thereby, each take the outer slats along with them and thus Ensure that the electrode bushing 38/1 is completely closed in every position of the electrode 4/1.
  • the solid, lumpy feed material 16 is charged into the receiving space 8 of the charge material preheater 7 by the charging device 12 until a sufficient column 17 has formed. In the area of the connection zone 10, the solid feed material partly reaches the furnace hearth due to the natural angle of repose 41 of the bed.
  • the electrodes 4/1 to 4/3 are now moved in the direction of the charge preheater 7 and the melting process is started by lowering the electrodes in the region of the bed.
  • the liquid metal sump that forms collects in the oven and causes an intensive exchange of material and heat through the bath movement in the lowest zone of the charge column.
  • desired metallurgical conversions can also take place, which are controlled by targeted supply of oxygen, coal or aggregates in the area indicated by the burners 15 or by aggregates admixed with the charge.
  • the burner 15 can also be used to introduce additional heat.
  • the feed material 16 of the pouring column 17 sinks down in order to also be melted in the lowest zone. To favor this sinking movement, the cross section of the interior 8 of the charge preheater 7 is widened downward.
  • the electrodes 4/1 to 4/3 are in the position adjacent to the shaft furnace 7, ie in the representation according to FIG. 2, in the vicinity or at the left end position of the movement paths 28/1 to 28/3, the radiation energy the arcs are introduced to an increased extent in the lower area of the charge column and thus open optimally used melting process.
  • the furnace exhaust gases which, due to the extraction via the gas outlet 13, reach the charging material column directly from the arc areas.
  • the electrodes When a sufficient amount of feed material has melted, the electrodes are moved back into the right end position of the movement paths 28/1 to 28/3 shown in FIG. 2 and the bath is brought to the required tapping temperature.
  • the tapping takes place via the tapping device 21 provided in the bottom of the arc furnace. Part of the metal sump is preferably retained in the furnace vessel for the next melting process.
  • the electrode can be moved horizontally, the arcs can always be brought into the most favorable position with regard to the melting process, the heating of the liquid melting bath and the loading of the furnace walls. Any intermediate positions are possible along the movement paths 28/1 to 28/3 of the electrodes 4/1 to 4/3. In this way it is also possible, during the melting process, to have the arcs burn only on an existing liquid sump immediately adjacent to the still solid material and thus to enable more uniform operating conditions. Since only the relative position of the electrodes within the furnace vessel is important, it is also possible to move the furnace vessel 2 together with the receiving space 8 instead of the electrodes.
  • each of the electrodes 4/1, 4/2 and 4/3 is clamped in a telescopically extendable electrode support arm 51/1, 51/2 and 51/3.
  • the guides 52/1, 52/2 and 52/3 for these electrode support arms can be raised and lowered by means of electrode hoists 26/1, 26/2 and 26/3 and also by a limited angle about vertical axes 53/1, 53 / 2 or 53/3 rotatable.
  • the guides 52/1 to 52/3 are thus each connected to the associated electrode lifting mechanism 26/1 to 26/3 via a connection which is rotatable within a limited angle and is equipped with a drive.
  • the arc electrodes 4/1 to 4/3 are of a triangular arrangement in the top view in the middle of the furnace vessel, as shown in FIG. 7, in an arcuate arrangement adjacent to the receiving space for the cargo and movable back.
  • a limited possibility of rotation, not shown, of each of the two outer support arms 51/1 and 51/3 is provided about their longitudinal axes 54/1 and 54/3.
  • the outer electrodes 4/1 and 4/3 can be inclined by a small angle, so that in addition to the change in the distance between the electrode tips due to the predetermined movement paths of the electrodes, a change in the distance is possible by inclination.
  • connection zone 10 extends obliquely upwards from the interior 11 of the furnace vessel 2 to the interior 8 of the charge material preheater 7 and a partition 56 provided with gas passage openings 55 is arranged in the expanded region.
  • the hot furnace gases can be introduced into this column over a larger cross section of the charge column 17.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
EP85106662A 1984-06-08 1985-05-30 Four à arc muni d'un espace de chargement sur le côté Expired EP0170809B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP88105416A EP0291680B2 (fr) 1984-06-08 1985-05-30 Four à arc muni d'un espace de chargement sur le côté
AT85106662T ATE37947T1 (de) 1984-06-08 1985-05-30 Lichtbogenofen mit einem auf einer seite des ofengefaesses vorgesehenen aufnahmeraum fuer chargiergut.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843421485 DE3421485A1 (de) 1984-06-08 1984-06-08 Lichtbogenofen mit einem auf einer seite des ofengefaesses vorgesehenen aufnahmeraum fuer chargiergut
DE3421485 1984-06-08

Related Child Applications (3)

Application Number Title Priority Date Filing Date
EP88105416A Division-Into EP0291680B2 (fr) 1984-06-08 1985-05-30 Four à arc muni d'un espace de chargement sur le côté
EP88105416A Division EP0291680B2 (fr) 1984-06-08 1985-05-30 Four à arc muni d'un espace de chargement sur le côté
EP88105416.7 Division-Into 1985-05-30

Publications (3)

Publication Number Publication Date
EP0170809A2 true EP0170809A2 (fr) 1986-02-12
EP0170809A3 EP0170809A3 (en) 1986-10-08
EP0170809B1 EP0170809B1 (fr) 1988-10-12

Family

ID=6237993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85106662A Expired EP0170809B1 (fr) 1984-06-08 1985-05-30 Four à arc muni d'un espace de chargement sur le côté

Country Status (6)

Country Link
US (1) US4617673A (fr)
EP (1) EP0170809B1 (fr)
AT (1) ATE71666T1 (fr)
DE (3) DE3421485A1 (fr)
ES (1) ES8607527A1 (fr)
ZA (1) ZA854041B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0240485B1 (fr) 1986-03-17 1990-05-23 VOEST-ALPINE Industrieanlagenbau GmbH Installation pour la fabrication d'acier de ferraille
EP0373378A1 (fr) * 1988-11-18 1990-06-20 Fuchs Systemtechnik GmbH Procédé pour le fonctionnement d'une unité de fusion et unité de fusion pour le procédé
EP0385434A3 (en) * 1989-03-02 1990-10-10 Fuchs Technology Ag Smelting unit with a shaft for charging and preheating the charge
EP0394214A1 (fr) * 1989-04-13 1990-10-24 VOEST-ALPINE INDUSTRIEANLAGENBAU GESELLSCHAFT m.b.H. Installation pour le traitement métallurgique de métaux, de composés métalliques et/ou d'alliages métalliques ou pour la production de carbure de calcium
WO1991013305A1 (fr) * 1990-02-28 1991-09-05 Fuchs Technology Ag Unite metallurgique
WO1991018120A1 (fr) * 1990-05-17 1991-11-28 Fuchs Technology Ag Installation de fusion a deux fours de fusion adjacents

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Publication number Priority date Publication date Assignee Title
DE3533755A1 (de) * 1985-09-21 1987-04-02 Fuchs Systemtechnik Gmbh Ofengefaess eines lichtbogenofens
DE3839096A1 (de) * 1988-11-18 1990-05-23 Fuchs Systemtechnik Gmbh Verfahren zum betrieb eines einschmelzaggregates und einschmelzaggregat fuer dieses verfahren
DE3940558A1 (de) * 1989-12-07 1991-06-13 Fuchs Technology Ag Verfahren zum betrieb eines lichtbogenofens und lichtbogenofen
DE3906653A1 (de) * 1989-03-02 1990-09-06 Fuchs Technology Ag Einschmelzaggregat mit schachtfoermigem chargiergutvorwaermer
US5544194A (en) * 1993-06-09 1996-08-06 Leybold Durferrit Gmbh Apparatus for degreasing electrically conductive material
DE4319166C2 (de) * 1993-06-09 2002-02-14 Ald Vacuum Techn Ag Verfahren und Vorrichtung zur Reinigung, insbesondere Entfettung und Kompaktierung von elektrisch leitfähigem Gut
US5426664A (en) * 1994-02-08 1995-06-20 Nu-Core, Inc. Water cooled copper panel for a furnace and method of manufacturing same
JP2861794B2 (ja) * 1994-03-18 1999-02-24 日本鋼管株式会社 原材料予熱槽を備えた溶解炉
DE19529924C1 (de) * 1995-08-01 1996-10-31 Mannesmann Ag Lichtbogenofen und Verfahren zur Vermeidung von Überhitzungen der Ofenwand
US6064687A (en) * 1997-12-12 2000-05-16 Emerging Technologies International, Llc Mobile furnace facility
KR100359121B1 (ko) * 1999-07-08 2002-11-04 닛폰 고칸 가부시키가이샤 냉철원의 아크용해설비 및 용해방법
DE10352764A1 (de) * 2003-11-12 2005-06-16 Polysius Ag Schachtvorwärmer
DE10355549A1 (de) * 2003-11-27 2005-06-23 Intracon Gmbh Chargiergutvorwärmer
JP6183073B2 (ja) * 2013-08-31 2017-08-23 大同特殊鋼株式会社 アーク炉
DE102014115671A1 (de) 2014-10-28 2016-05-12 Gerhard Fuchs Schmelzvorrichtung und schmelzverfahren
DE102018220594A1 (de) * 2018-11-29 2020-06-04 Sms Group Gmbh Vorrichtung und Verfahren zum Halten eines Elektrodentragarms
IT201900025441A1 (it) * 2019-12-23 2021-06-23 Danieli Off Mecc Metodo di fusione in un forno elettrico ad arco e apparato di fusione
CN115627370A (zh) * 2022-10-28 2023-01-20 娄底市大金新材料有限责任公司 一种利用电弧炉生产高纯金属铬的方法

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DE171695C (fr) *
DE127833C (fr) *
US1889907A (en) * 1931-06-10 1932-12-06 Joseph T Terry Electric arc furnace
US2763903A (en) * 1953-07-09 1956-09-25 Allegheny Ludlum Steel Apparatus for melting and casting refractory material
DE1250644B (fr) * 1964-01-14 1900-01-01
US3441651A (en) * 1966-02-23 1969-04-29 Canadian Patents Dev Method and apparatus for heat recovery in electric arc furnaces
DE1758776B1 (de) * 1968-08-05 1971-09-08 Demag Elektrometallurgie Gmbh Elektrischer Lichtbogenschmelzofen
DE6941439U (de) * 1969-10-23 1970-03-26 Boehler & Co Ag Geb Hilfselektrode zum warmhalten von durch elektroumschmelzen gebildeten metallschmelzen, insbes. von stahlschmelzen.
US4071687A (en) * 1975-03-17 1978-01-31 National Research Institute For Metals Electric arc furnace for continuous melting of directly reduced iron or directly reduced iron ore
GB1507870A (en) * 1975-11-19 1978-04-19 Tokyo Gas Co Ltd Metal melting furnace
FR2498309B1 (fr) * 1981-01-20 1986-04-11 Clesid Sa Four electrique destine a la fusion de ferrailles et alimente en continu

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0240485B1 (fr) 1986-03-17 1990-05-23 VOEST-ALPINE Industrieanlagenbau GmbH Installation pour la fabrication d'acier de ferraille
EP0373378A1 (fr) * 1988-11-18 1990-06-20 Fuchs Systemtechnik GmbH Procédé pour le fonctionnement d'une unité de fusion et unité de fusion pour le procédé
EP0385434A3 (en) * 1989-03-02 1990-10-10 Fuchs Technology Ag Smelting unit with a shaft for charging and preheating the charge
WO1990010086A3 (fr) * 1989-03-02 1990-10-18 Fuchs Technology Ag Agregat de fusion a puits de prechauffage des matieres chargees
AU621207B2 (en) * 1989-03-02 1992-03-05 Arcmet Technologie Gmbh Melting aggregate with shaft for preheating charged materials
US5153894A (en) * 1989-03-02 1992-10-06 Fuchs Technology Ag Smelting plant with removable shaft-like charging material preheater
EP0394214A1 (fr) * 1989-04-13 1990-10-24 VOEST-ALPINE INDUSTRIEANLAGENBAU GESELLSCHAFT m.b.H. Installation pour le traitement métallurgique de métaux, de composés métalliques et/ou d'alliages métalliques ou pour la production de carbure de calcium
WO1991013305A1 (fr) * 1990-02-28 1991-09-05 Fuchs Technology Ag Unite metallurgique
WO1991018120A1 (fr) * 1990-05-17 1991-11-28 Fuchs Technology Ag Installation de fusion a deux fours de fusion adjacents
TR25664A (tr) * 1990-05-17 1993-07-01 Fuchs Technology Ag YANYANA DIZILMIS ILISKIDE DüZENLENEN IKI ERITME OCAKLI ERITME TESISI.

Also Published As

Publication number Publication date
EP0170809A3 (en) 1986-10-08
ES8607527A1 (es) 1986-06-01
ZA854041B (en) 1986-01-29
DE3421485A1 (de) 1985-12-12
ES543965A0 (es) 1986-06-01
ATE71666T1 (de) 1992-02-15
EP0170809B1 (fr) 1988-10-12
DE3565598D1 (en) 1988-11-17
DE3585234D1 (fr) 1992-02-27
US4617673A (en) 1986-10-14

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