EP1969902A1 - Apparatus for adjusting an electrode for a metallurgical furnace - Google Patents

Apparatus for adjusting an electrode for a metallurgical furnace

Info

Publication number
EP1969902A1
EP1969902A1 EP06829378A EP06829378A EP1969902A1 EP 1969902 A1 EP1969902 A1 EP 1969902A1 EP 06829378 A EP06829378 A EP 06829378A EP 06829378 A EP06829378 A EP 06829378A EP 1969902 A1 EP1969902 A1 EP 1969902A1
Authority
EP
European Patent Office
Prior art keywords
electrode
furnace
ring
clamping
mounting ring
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
EP06829378A
Other languages
German (de)
French (fr)
Other versions
EP1969902B1 (en
Inventor
Karl-Heinz Kummer
Jürgen Kunze
Horst-Dieter Borgwardt
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
Priority to SI200631494T priority Critical patent/SI1969902T1/en
Priority to PL06829378T priority patent/PL1969902T3/en
Publication of EP1969902A1 publication Critical patent/EP1969902A1/en
Application granted granted Critical
Publication of EP1969902B1 publication Critical patent/EP1969902B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces heated electrically, with or without any other source of heat
    • F27B3/085—Arc furnaces
    • 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
    • F27B3/20—Arrangements of heating 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
    • 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
    • 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
    • F27D11/10—Disposition of electrodes
    • 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
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0006—Electric heating elements or system

Definitions

  • Apparatus for repositioning an electrode for a metallurgical furnace Apparatus for repositioning an electrode for a metallurgical furnace.
  • the invention relates to a device for resetting an electrode of a metallurgical furnace, in particular a furnace for resistance operation with a furnace cover, consisting of a clamping ring and a mounting ring.
  • an electric reduction furnace with open slag bath is known, in particular for the melting of dusty material, with a vertically movable frame arranged above the oven closed with a lid, on which an electrode holder and an electrode follower are arranged.
  • a stage is provided, on which the frame is supported by at least three regulating cylinders, and in that the stage arranged above the furnace lid is designed as a maintenance platform, on which a sealing unit is provided per electrode.
  • the sealing unit has components for horizontal and vertical sealing of the free surfaces between electrodes and the electrode passage openings of the lid.
  • a metallurgical furnace is described with a self-baking electrode, with an extending within the electrode along its axis extending over the length of the electrode and carrying them tension element.
  • the tension element projects out of the electrode at the end facing away from the electrode and can be connected to a lockable guide device for carrying and moving the electrode and provided with a tubular shaping device which comprises the electrode at least in the unbaked region and consists of a jacket.
  • the tension element is a tube, which is provided with reinforcing plates leading the way from the tension element at least over the entire length of the electrode.
  • BEST ⁇ TJGUNGSKOP8E can be centered by a horizontal centering device engaging in the baked area from the outside.
  • the jacket has closed cavities.
  • each electrode is held by a positionally variable holding and Nachsetzvorraum in the vertical direction, at the support ring a the electrode tightly comprehensive support cylinder is attached, the conductor.
  • a surrounding these current conductors arranged in the region of the movement of the electrode relative to a stationary over the furnace vessels mounted gas exhaust hood, the elec- rode sealing against the gas exhaust hood sealing cylinder.
  • the device also carries a clamping device with power supply jaws.
  • the jacket of the sealing cylinder is liquid-cooled and extends below the gas extraction hood, in the direction of the furnace vessel surrounding the current conductor.
  • detachable, segmented cooling shields connected to each other and extending as far as the clamping device, the coolant circulation of which is connected to the cooling circuit of the sealing cylinder.
  • an electrode detection system for electrothermal see melting furnaces comprising jaws for the conduction of electrical current to an electrode, hydraulic cylinder for the up and down movement of the electrode, said cylinder via an electrode holder and clamping members with the Electrode are connected.
  • at least two guide rails are arranged parallel to the electrode, whose upper ends are suspended on a suspension frame and whose lower ends have stops as the lower boundary of the movement path of the current-carrying clamping jaws.
  • a method of weighing an electrode immersed in the charge of an electric furnace is known from EP 1 068 496 B1.
  • the electrode is moved at least once in the vertical direction, then lifted and recorded the weight of the electrode shortly after lifting in order to substantially prevent the influence of the dynamic and static friction between the electrode and the charge of the furnace.
  • DE 1 440 991 describes a method for lowering and lifting electrodes in relation to the electrode holder in electric melting furnaces, wherein the electrode is equipped with a press ring attached above the electrode holder, which is connected to a double-acting pull arrangement. In this case, the pulling down or pushing up of the press ring takes place by means of combined pneumatic and hydraulic pressure in a closed system.
  • WO 2004/110 104 A1 discloses a direct-current arc furnace with at least one electrode, which is held inside the furnace and can be tracked to compensate for the electrode burn-off, and with a counterelectrode in the furnace, for example a bottom electrode.
  • the entire electrode strand is arranged with an electrode holder and a Vietnamesesetz adopted on a furnace platform or a frame above the furnace.
  • the holding and the repositioning of the electrodes is carried out by a Nachsetzvorraum with two clamping rings.
  • the clamping rings are equipped with clamping springs for holding the electrode and hydraulic cylinders for opening the clamping springs.
  • a mounting ring is arranged at the lower end of the electrode. Its integrated contact jaws are used exclusively to supply power to the electrodes.
  • the invention is therefore based on the object to make a Nachsetzvorraum so that the device is simplified and the above-mentioned disadvantages are avoided.
  • an improved embodiment of the Nachsetzvoroplasty also the manufacturing cost to be reduced.
  • This object is achieved in that is arranged in a device for repositioning an electrode according to the preamble of claim 1, the mounting ring in the furnace lid arranged.
  • the decisive advantage of the Nachsetzvoroplasty invention is that the function of the two clamping rings of the Nachsetzvoroplasty is transmitted to the mounting ring with its contact jaws.
  • the improvements shown reduce the number of components used, reduce the height of the device for repositioning an electrode, simplify the hydraulic system and therefore reduce the cost of the complete device.
  • Fig. 1 in side view a known Nachsetzvortechnisch and
  • Fig. 2 in side view a Nachsetzvoroplasty invention
  • Fig. 3 in sectional side view of a mounting ring as a single part.
  • 1 shows a known Nachsetzvorraum 1, consisting of an upper clamping ring 2, a lower clamping ring 3 and a mounting ring 4 are shown, which enclose an electrode 5.
  • the lower clamping ring 3 is influenced vertically via regulating cylinder 6.
  • at least one pressure jaw 7, 8 is installed in both clamping rings 2, 3, at least one pressure jaw 7, 8 is installed.
  • Each pressure jaw 7, 8 is pressed against the electrode 5 by means of a spring 9, 10 in order to hold it.
  • lifting cylinders 11, 12 which are arranged vertically between the upper clamping ring 2 and the lower clamping ring 3.
  • the mounting ring 4 surrounding the electrode 5 at the lower end is formed at least with a contact jaw 13, which is pressed against the electrode 5 via a hydraulic cylinder 14 in order to allow a constant current transition.
  • FIG. 2 shows a repositioning device 1 according to the invention.
  • the Nachsetzvoriques 1 a clamping ring 3, which can be moved vertically by means of regulating cylinder 6.
  • the mounting ring 4 is arranged in a furnace lid 15.
  • the lower edge 16 of the mounting ring 4 is formed flush with the lower edge 17 of the furnace lid 15.
  • the regulating cylinders 6 are extended. If the stroke is reached, the electrode 5 is held by the mounting ring 4, the clamping ring 3 is released and moved vertically upwards by means of the regulating cylinder 6. Have the regulating cylinder 6 reaches its starting point, the electrode 5 is again held by the clamping ring 3 and the clamping on the mounting ring 4 is released. The electrode 5 is supplied with power over the contact jaws 13 for the entire time. The further resetting or lowering takes place again via the regulating cylinder 6.
  • the socket ring 4 is shown as a single part in a sectional side view. The voltage applied to the electrode 5 contact jaw 13 is enclosed by the mounting ring 14. This unit is surrounded by a sealing cylinder 18 and a guard ring 19 formed thereon. The lower edge 16 and the lower edge 17 of the furnace lid 15 are formed flush.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Details (AREA)
  • Discharge Heating (AREA)

Abstract

In an apparatus (1) for adjusting an electrode (5) of a metallurgical furnace, in particular a furnace for resistance operation having a furnace lid (15), comprising a clamping ring (3) and a holder ring (4, 14), the holder ring (4, 14) is designed to be arranged in the furnace lid (15).

Description

Vorrichtung zum Nachsetzen einer Elektrode für einen metallurgischen Ofen.Apparatus for repositioning an electrode for a metallurgical furnace.
Die Erfindung betrifft eine Vorrichtung zum Nachsetzen einer Elektrode eines metallurgischen Ofens, insbesondere eines Ofens für den Widerstandsbetrieb mit einem Ofendeckel, bestehend aus einem Klemmring und einem Fassungsring.The invention relates to a device for resetting an electrode of a metallurgical furnace, in particular a furnace for resistance operation with a furnace cover, consisting of a clamping ring and a mounting ring.
Aus der EP 0 733 299 B1 ist ein Elektro -Reduktionsofen mit offenem Schlackebad bekannt, insbesondere für das Einschmelzen von staubförmigem Möller, mit einem oberhalb des mit einem Deckel verschlossenen Ofens angeordneten vertikal bewegbaren Rahmen, an dem eine Elektrodenfassung sowie eine Elektrodennachsetzeinrichtung angeordnet ist. Dabei ist eine Bühne vorgese- hen, an der sich der Rahmen über mindestens drei Regulierzylinder abstützt, und dass die Bühne oberhalb des Ofendeckels angeordnet als Wartungsbühne ausgestaltet ist, an der je Elektrode eine Dichtungseinheit vorgesehen ist. Die Dichtungseinheit weist Bauteile zur horizontalen und vertikalen Abdichtung der freien Flächen zwischen Elektroden und den Elektrodendurchtrittsöffnungen des Deckels auf.From EP 0 733 299 B1, an electric reduction furnace with open slag bath is known, in particular for the melting of dusty material, with a vertically movable frame arranged above the oven closed with a lid, on which an electrode holder and an electrode follower are arranged. In this case, a stage is provided, on which the frame is supported by at least three regulating cylinders, and in that the stage arranged above the furnace lid is designed as a maintenance platform, on which a sealing unit is provided per electrode. The sealing unit has components for horizontal and vertical sealing of the free surfaces between electrodes and the electrode passage openings of the lid.
In der DE 40 10 353 C2 ist ein metallurgischer Ofen mit einer selbstbackenden Elektrode beschrieben, mit einem innerhalb der Elektrode längs deren Achse verlaufenden, über die Länge der Elektrode ausgedehnten und sie tragenden Zugelement. Das Zugelement ragt an dem der Elektrode abgewandten Ende aus der Elektrode heraus und ist mit einer verriegelbaren Führungseinrichtung zum Tragen und Bewegen der Elektrode verbindbar und mit einer rohrförmigen, die Elektrode mindestens im ungebackenen Bereich umfassenden Formgebungseinrichtung versehen, die aus einem Mantel besteht. Dabei ist das Zug- element ein Rohr, dass mindestens über die ganze Länge der Elektrode vom Zugelement wegweisend mit Armierungsblechen versehen ist. Die Elektrode istIn DE 40 10 353 C2, a metallurgical furnace is described with a self-baking electrode, with an extending within the electrode along its axis extending over the length of the electrode and carrying them tension element. The tension element projects out of the electrode at the end facing away from the electrode and can be connected to a lockable guide device for carrying and moving the electrode and provided with a tubular shaping device which comprises the electrode at least in the unbaked region and consists of a jacket. In this case, the tension element is a tube, which is provided with reinforcing plates leading the way from the tension element at least over the entire length of the electrode. The electrode is
BESTÄTJGUNGSKOP8E durch eine im gebackenen Bereich von außen angreifende Horizontal - Zentriereinrichtung zentrierbar. Der Mantel weist geschlossene Hohlräume auf.BESTÄTJGUNGSKOP8E can be centered by a horizontal centering device engaging in the baked area from the outside. The jacket has closed cavities.
Eine Einrichtung zum Kühlen von Bestandteilen offener elektrischer Lichtbogenoder Reduktionsöfen wird in der DE 21 25 773 C3 beschrieben. Dabei wird jede Elektrode durch eine in vertikaler Richtung lageveränderlicher Halte- und Nachsetzvorrichtung gehalten, an deren Tragring ein die Elektrode dicht umfassender Tragzylinder befestigt ist, der Stromleiter. Einen, diese Stromleiter umgebenden, im Bereich der Bewegung der Elektrode gegenüber einer über dem Ofengefäße ortsfest angebrachten Gasabzugshaube angeordneten, die Elekt- rode gegen die Gasabzugshaube dichtenden Abdichtzylinder. Die Einrichtung trägt weiterhin eine Klemmvorrichtung mit Stromzuführungsbacken. Der Mantel des Abdichtzylinders ist flüssigkeitsgekühlt und unterhalb der Gasabzugshaube, in Richtung zum Ofengefäß die Stromleiter umgebend, verlängert. An dem dem Ofengefäß zugewandten Ende des Abdichtzylinders sind abnehmbare, mitein- ander verbundene, bis an die Klemmvorrichtung reichende, kühlmitteldurchströmte, segmentartige Kühlschilde angeordnet, deren Kühlkreislauf an den Kühlkreislauf des Abdichtzylinders angeschlossen ist.A device for cooling components of open electric arc or reduction furnaces is described in DE 21 25 773 C3. In this case, each electrode is held by a positionally variable holding and Nachsetzvorrichtung in the vertical direction, at the support ring a the electrode tightly comprehensive support cylinder is attached, the conductor. A surrounding these current conductors, arranged in the region of the movement of the electrode relative to a stationary over the furnace vessels mounted gas exhaust hood, the elec- rode sealing against the gas exhaust hood sealing cylinder. The device also carries a clamping device with power supply jaws. The jacket of the sealing cylinder is liquid-cooled and extends below the gas extraction hood, in the direction of the furnace vessel surrounding the current conductor. At the end of the sealing cylinder facing the furnace vessel there are arranged detachable, segmented cooling shields connected to each other and extending as far as the clamping device, the coolant circulation of which is connected to the cooling circuit of the sealing cylinder.
Aus der DE 33 42 900 A1 ist ein Elektrodenfassungssystem für elektrothermi- sehe Schmelzöfen bekannt, enthaltend Klemmbacken für die Leitung des elektrischen Stroms zu einer Elektrode, hydraulische Zylinder für die Auf- und Abwärtsbewegung der Elektrode, wobei diese Zylinder über einen Elektrodenhalter und Klemmorgane mit der Elektrode verbunden sind. Dabei sind parallel zur Elektrode mindestens zwei Führungsschienen angeordnet, deren obere Enden an einem Aufhängungsrahmen aufgehängt sind und deren untere Enden Anschläge als untere Begrenzung des Bewegungsweges der stromführenden Klemmbacken aufweisen.From DE 33 42 900 A1 discloses an electrode detection system for electrothermal see melting furnaces is known, comprising jaws for the conduction of electrical current to an electrode, hydraulic cylinder for the up and down movement of the electrode, said cylinder via an electrode holder and clamping members with the Electrode are connected. In this case, at least two guide rails are arranged parallel to the electrode, whose upper ends are suspended on a suspension frame and whose lower ends have stops as the lower boundary of the movement path of the current-carrying clamping jaws.
Ein Verfahren zum Wägen einer Elektrode, die in die Charge eines elektrischen Schmelzofens eingetaucht ist, ist aus der EP 1 068 496 B1 bekannt. Die Elektrode wird dabei mindestens einmal in vertikaler Richtung bewegt, danach an- gehoben und das Gewicht der Elektrode kurz nach dem Anheben registriert, um den Einfluss der dynamischen und statischen Reibung zwischen der Elektrode und der Charge des Ofens im wesentlichen zu unterbinden.A method of weighing an electrode immersed in the charge of an electric furnace is known from EP 1 068 496 B1. The electrode is moved at least once in the vertical direction, then lifted and recorded the weight of the electrode shortly after lifting in order to substantially prevent the influence of the dynamic and static friction between the electrode and the charge of the furnace.
In der DE 1 440 991 wird ein Verfahren beschrieben, zum Senken und Heben von Elektroden im Verhältnis zur Elektrodenfassung in elektrischen Schmelzöfen, wobei die Elektrode mit einem über der Elektrodenfassung angebrachten Pressring ausgerüstet ist, der mit einer doppelt wirkenden Zuganordnung in Verbindung steht. Dabei erfolgt das Herabziehen bzw. das Hochschieben des Pressringes mit Hilfe von kombiniertem pneumatischen und hydraulischen Druck in einem geschlossenen System.DE 1 440 991 describes a method for lowering and lifting electrodes in relation to the electrode holder in electric melting furnaces, wherein the electrode is equipped with a press ring attached above the electrode holder, which is connected to a double-acting pull arrangement. In this case, the pulling down or pushing up of the press ring takes place by means of combined pneumatic and hydraulic pressure in a closed system.
Aus der WO 2004 / 110 104 A1 ist ein Gleichstrom - Lichtbogenofen mit mindestens einer Elektrode bekannt, die im Ofeninneren gehalten und zur Kompensation des Elektrodenabbrandes nachführbar ist, sowie mit einer Gegen- elektrode im Ofen, beispielsweise einer Bodenelektrode. Dabei ist der gesamte Elektrodenstrang mit einer Elektrodenfassung und einer Nachsetzeinrichtung an einer Ofenbühne oder einem Rahmen oberhalb des Ofens angeordnet.WO 2004/110 104 A1 discloses a direct-current arc furnace with at least one electrode, which is held inside the furnace and can be tracked to compensate for the electrode burn-off, and with a counterelectrode in the furnace, for example a bottom electrode. In this case, the entire electrode strand is arranged with an electrode holder and a Nachsetzeinrichtung on a furnace platform or a frame above the furnace.
Bei den bekannten Ausführungen erfolgt das Halten und das Nachsetzen der Elektroden durch eine Nachsetzvorrichtung mit zwei Klemmringen. Die Klemmringe sind mit Klemm - Federn zum Halten der Elektrode und mit Hydraulikzylindern zum Öffnen der Klemm - Federn ausgestattet. Am unteren Ende der Elektrode ist ein Fassungsring angeordnet. Dessen integrierte Kontaktbacken dienen ausschließlich der Stromzufuhr zu den Elektroden. Eine derartige Aus- führung führt zu einem hohen technischen Aufwand und zu einer hohen Bauart der Nachsetzvorrichtung. Daraus resultieren hohe Kosten für die Herstellung.In the known embodiments, the holding and the repositioning of the electrodes is carried out by a Nachsetzvorrichtung with two clamping rings. The clamping rings are equipped with clamping springs for holding the electrode and hydraulic cylinders for opening the clamping springs. At the lower end of the electrode, a mounting ring is arranged. Its integrated contact jaws are used exclusively to supply power to the electrodes. Such an embodiment leads to a high technical complexity and to a high type of Nachsetzvorrichtung. This results in high production costs.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Nachsetzvorrichtung so zu gestalten, dass die Vorrichtung vereinfacht wird und die oben genannten Nachteile vermieden werden. Mit einer verbesserten Ausgestaltung der Nachsetzvorrichtung sollen außerdem die Herstellungskosten gesenkt werden. Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass bei einer Vorrichtung zum Nachsetzen einer Elektrode gemäß dem Oberbegriff von Anspruch 1 , der Fassungsring in dem Ofendeckel angeordnet ausgebildet ist.The invention is therefore based on the object to make a Nachsetzvorrichtung so that the device is simplified and the above-mentioned disadvantages are avoided. With an improved embodiment of the Nachsetzvorrichtung also the manufacturing cost to be reduced. This object is achieved in that is arranged in a device for repositioning an electrode according to the preamble of claim 1, the mounting ring in the furnace lid arranged.
Weitere Ausgestaltungen der Nachsetzvorrichtung ergeben sich aus den diesbezüglichen Unteransprüchen.Further embodiments of the Nachsetzvorrichtung result from the relevant subclaims.
Der entscheidende Vorteil der erfindungsgemäßen Nachsetzvorrichtung liegt darin, dass die Funktion der beiden Klemmringe der Nachsetzvorrichtung auf den Fassungsring mit seinen Kontaktbacken übertragen wird.The decisive advantage of the Nachsetzvorrichtung invention is that the function of the two clamping rings of the Nachsetzvorrichtung is transmitted to the mounting ring with its contact jaws.
Weiterhin wird durch die erfindungsgemäße Ausführung einer Nachsetzvorrichtung erreicht, dass die Einplanung eines Elektro - Reduktionsofens mit Kompakt -Strängen in bestehende Ofengebäude erleichtert bzw. erst ermöglicht wird.Furthermore, it is achieved by the inventive design of a Nachsetzvorrichtung that the planning of an electric - reduction furnace with compact strands in existing furnace building is facilitated or only made possible.
Die aufgezeigten Verbesserungen reduzieren die Anzahl der eingesetzte Bauteile, verringern die Bauhöhe der Vorrichtung zum Nachsetzen einer Elektrode, vereinfachen die Hydraulikanlage und reduzieren daher die Kosten der komplet- ten Vorrichtung.The improvements shown reduce the number of components used, reduce the height of the device for repositioning an electrode, simplify the hydraulic system and therefore reduce the cost of the complete device.
Ausführungsbeispiele der Erfindung werden anhand von sehr schematischen Zeichnungen näher beschrieben. Es zeigen:Embodiments of the invention will be described in more detail with reference to very schematic drawings. Show it:
Fig. 1 in Seitenansicht eine bekannte Nachsetzvorrichtung undFig. 1 in side view a known Nachsetzvorrichtung and
Fig. 2 in Seitenansicht eine erfindungsgemäße Nachsetzvorrichtung undFig. 2 in side view a Nachsetzvorrichtung invention and
Fig. 3 in geschnittener Seitenansicht einen Fassungsring als Einzelteil. In Figur 1 ist eine bekannte Nachsetzvorrichtung 1 , bestehend aus einem oberen Klemmring 2, einem unteren Klemmring 3 sowie einem Fassungsring 4 dargestellt, welche eine Elektrode 5 umschließen. Der untere Klemmring 3 wird über Regulierzylinder 6 vertikal beeinflusst. In beiden Klemmringen 2, 3 ist mindestens eine Druckbacke 7, 8 eingebaut. Jede Druckbacke 7, 8 wird mittels ei- ner Feder 9, 10 gegen die Elektrode 5 gedrückt, um diese zu Halten. Wird die Elektrode 1 nach unten in einen Ofen ( nicht dargestellt ) abgesenkt, so erfolgt dies über Hubzylinder 11 , 12, die vertikal zwischen dem oberen Klemmring 2 und dem unteren Klemmring 3 angeordnet sind. Zum Absenken wird der Hub der Hubzylinder 11 , 12 ausgenutzt. Der die Elektrode 5 am unteren Ende umgebende Fassungsring 4 ist mindestens mit einer Kontaktbacke 13 ausgebildet, die über einen Hydraulikzylinder 14 gegen die Elektrode 5 gedrückt wird, um einen konstanten Stromübergang zu ermöglichen.Fig. 3 in sectional side view of a mounting ring as a single part. 1 shows a known Nachsetzvorrichtung 1, consisting of an upper clamping ring 2, a lower clamping ring 3 and a mounting ring 4 are shown, which enclose an electrode 5. The lower clamping ring 3 is influenced vertically via regulating cylinder 6. In both clamping rings 2, 3, at least one pressure jaw 7, 8 is installed. Each pressure jaw 7, 8 is pressed against the electrode 5 by means of a spring 9, 10 in order to hold it. If the electrode 1 is lowered down into a furnace (not shown), this is done via lifting cylinders 11, 12, which are arranged vertically between the upper clamping ring 2 and the lower clamping ring 3. To lower the stroke of the lifting cylinder 11, 12 is utilized. The mounting ring 4 surrounding the electrode 5 at the lower end is formed at least with a contact jaw 13, which is pressed against the electrode 5 via a hydraulic cylinder 14 in order to allow a constant current transition.
In Figur 2 ist eine erfindungsgemäße Nachsetzvorrichtung 1 dargestellt.FIG. 2 shows a repositioning device 1 according to the invention.
Dabei sind die aus Figur 1 bekannten und weiterhin verwendeten Bauteile mit den gleichen Bezugsziffern versehen.The known from Figure 1 and continue to use components with the same reference numerals.
Gemäß der Erfindung weist die Nachsetzvorrichtung 1 einen Klemmring 3 auf, der mittels Regulierzylinder 6 vertikal verfahren werden kann. Der Fassungsring 4 ist in einem Ofendeckel 15 angeordnet. Zum Schutz ist der untere Rand 16 des Fassungsringes 4 bündig mit dem unteren Rand 17 des Ofendeckels 15 ausgebildet.According to the invention, the Nachsetzvorrichtung 1 a clamping ring 3, which can be moved vertically by means of regulating cylinder 6. The mounting ring 4 is arranged in a furnace lid 15. For protection, the lower edge 16 of the mounting ring 4 is formed flush with the lower edge 17 of the furnace lid 15.
Zum Nachsetzten bzw. zum Absenken der Elektrode 5 werden die Regulierzy- linder 6 ausgefahren. Ist deren Hub erreicht, wird die Elektrode 5 vom Fassungsring 4 gehalten, der Klemmring 3 wird gelöst und mittels der Regulierzylinder 6 vertikal nach oben verfahren. Haben die Regulierzylinder 6 ihren Ausgangspunkt erreicht, wird die Elektrode 5 wieder vom Klemmring 3 gehalten und die Klemmung am Fassungsring 4 wird gelöst. Die Elektrode 5 wir die ge- samte Zeit über die Kontaktbacken 13 mit Strom versorgt. Das weitere Nachsetzen bzw. Absenken erfolgt nun wieder über die Regulierzylinder 6. In Figur 3 ist in geschnittener Seitenansicht der Fassungsring 4 als Einzelteil dargestellt. Die an der Elektrode 5 anliegende Kontaktbacke 13 wird von dem Fassungsring 14 umschlossen. Diese Einheit ist von einem Abdichtzylinder 18 und einem daran ausgebildeten Schutzring 19 umgeben. Der untere Rand 16 und der unterer Rand 17 des Ofendeckels 15 sind bündig ausgebildet. For adjusting or lowering the electrode 5, the regulating cylinders 6 are extended. If the stroke is reached, the electrode 5 is held by the mounting ring 4, the clamping ring 3 is released and moved vertically upwards by means of the regulating cylinder 6. Have the regulating cylinder 6 reaches its starting point, the electrode 5 is again held by the clamping ring 3 and the clamping on the mounting ring 4 is released. The electrode 5 is supplied with power over the contact jaws 13 for the entire time. The further resetting or lowering takes place again via the regulating cylinder 6. In Figure 3, the socket ring 4 is shown as a single part in a sectional side view. The voltage applied to the electrode 5 contact jaw 13 is enclosed by the mounting ring 14. This unit is surrounded by a sealing cylinder 18 and a guard ring 19 formed thereon. The lower edge 16 and the lower edge 17 of the furnace lid 15 are formed flush.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1. Nachsetzvorrichtung1. Nachsetzvorrichtung
2. oberer Klemmring2nd upper clamping ring
3. unterer Klemmring3. lower clamping ring
4. Fassungsring4th mounting ring
5. Elektrode5th electrode
6. Regulierzylinder6. Regulating cylinder
7. Druckbacke7. Pressure jaw
8. Druckbacke8. Pressure jaw
9. Feder9. spring
10. Feder10. spring
11. Hubzylinder11. Lifting cylinder
12. Hubzylinder12. Lifting cylinder
13. Kontaktbacke13. Contact jaw
14. Fassungsring14th mounting ring
15. Ofendeckel15. Oven lid
16. unterer Rand Fassungsring16th lower edge mounting ring
17. unterer Rand Ofendeckel17th lower edge of oven lid
18. Abdichtzylinder18. Sealing cylinder
19. Schutzring 19. Guard ring

Claims

Patentansprüche claims
1. Vorrichtung (1 ) zum Nachsetzen einer Elektrode (5) eines metallurgi- sehen Ofens, insbesondere eines Ofens für den Widerstandsbetrieb mit einem Ofendeckel (15), bestehend aus einem Klemmring (3) und einem1. Device (1) for resetting an electrode (5) of a metallurgical furnace, in particular a furnace for resistance operation with a furnace cover (15), consisting of a clamping ring (3) and a
Fassungsring (4, 14), dadurch gekennzeichnet, dass der Fassungsring (4, 14) in dem Ofendeckel (15) angeordnet aus- gebildet ist.Holder ring (4, 14), characterized in that the mounting ring (4, 14) in the furnace lid (15) arranged arranged is formed.
2. Vorrichtung (1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass der untere Rand (16) des Fassungsrings (4, 14) mit dem unteren Rand (17) des Ofendeckels (15) bündig ausgebildet ist.2. Device (1) according to claim 1, characterized in that the lower edge (16) of the mounting ring (4, 14) with the lower edge (17) of the furnace lid (15) is formed flush.
3. Vorrichtung (1 ) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Elektrode (5) aus Graphit ausgebildet ist.3. Device (1) according to claim 1 or 2, characterized in that the electrode (5) is formed from graphite.
4. Vorrichtung (1 ) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Elektrode (5) aus Kohle ausgebildet ist.4. Device (1) according to claim 1 or 2, characterized in that the electrode (5) is formed of carbon.
5. Vorrichtung (1 ) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Elektrode (5) aus Soederberg ausgebildet ist.5. Device (1) according to claim 1 or 2, characterized in that the electrode (5) is formed of Soederberg.
6. Vorrichtung (1 ) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Elektrode (5) als Vollelektrode ausgebildet ist. 6. Device (1) according to one of claims 1 to 5, characterized in that the electrode (5) is designed as a full electrode.
7. Vorrichtung (1 ) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Elektrode (5) als Hohlelektrode ausgebildet ist.7. Device (1) according to one of claims 1 to 5, characterized in that the electrode (5) is designed as a hollow electrode.
8. Vorrichtung (1 ) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Anzahl der Elektroden (5) 1 , 2, 3, 4, 5, oder 6 ist. 8. Device (1) according to one of claims 1 to 7, characterized in that the number of electrodes (5) is 1, 2, 3, 4, 5, or 6.
EP06829378A 2006-01-04 2006-12-07 Apparatus for adjusting an electrode for a metallurgical furnace Not-in-force EP1969902B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200631494T SI1969902T1 (en) 2006-01-04 2006-12-07 Apparatus for adjusting an electrode for a metallurgical furnace
PL06829378T PL1969902T3 (en) 2006-01-04 2006-12-07 Apparatus for adjusting an electrode for a metallurgical furnace

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006000737A DE102006000737A1 (en) 2006-01-04 2006-01-04 Device for adjusting an electrode in a metallurgical furnace comprises a clamping ring and a holding ring mounted in the furnace roof
PCT/EP2006/011757 WO2007076914A1 (en) 2006-01-04 2006-12-07 Apparatus for adjusting an electrode for a metallurgical furnace

Publications (2)

Publication Number Publication Date
EP1969902A1 true EP1969902A1 (en) 2008-09-17
EP1969902B1 EP1969902B1 (en) 2012-10-10

Family

ID=37845240

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Application Number Title Priority Date Filing Date
EP06829378A Not-in-force EP1969902B1 (en) 2006-01-04 2006-12-07 Apparatus for adjusting an electrode for a metallurgical furnace

Country Status (18)

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US (1) US20090010299A1 (en)
EP (1) EP1969902B1 (en)
JP (1) JP5094733B2 (en)
KR (1) KR101213977B1 (en)
CN (1) CN101356856B (en)
AU (1) AU2006332203B2 (en)
BR (1) BRPI0620909A2 (en)
CA (1) CA2632246C (en)
DE (1) DE102006000737A1 (en)
EA (1) EA013447B1 (en)
ES (1) ES2391574T3 (en)
NO (1) NO341936B1 (en)
NZ (1) NZ568884A (en)
PL (1) PL1969902T3 (en)
SI (1) SI1969902T1 (en)
UA (1) UA91886C2 (en)
WO (1) WO2007076914A1 (en)
ZA (1) ZA200803597B (en)

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KR200458281Y1 (en) 2009-08-27 2012-01-31 현대제철 주식회사 A jig structure for master cylinder in electric furnace
US8270139B2 (en) 2010-09-16 2012-09-18 General Electric Company Adjustable arc electrode assembly and method of assembling
US9036309B2 (en) 2010-09-16 2015-05-19 General Electric Company Electrode and plasma gun configuration for use with a circuit protection device
DE102012209733A1 (en) * 2012-06-11 2013-12-12 Sgl Carbon Se Method and device for determining the consumption of electrode material during operation of an electric furnace
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DE102013224552A1 (en) 2013-11-29 2015-06-03 Sms Siemag Ag Apparatus and method for repositioning an electrode for a metallurgical furnace
CN113862487A (en) * 2021-08-25 2021-12-31 山东莱锻机械股份有限公司 Vacuum electroslag furnace convenient for feeding

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Also Published As

Publication number Publication date
PL1969902T3 (en) 2013-03-29
DE102006000737A1 (en) 2007-07-05
ZA200803597B (en) 2009-02-25
AU2006332203A1 (en) 2007-07-12
JP5094733B2 (en) 2012-12-12
US20090010299A1 (en) 2009-01-08
AU2006332203B2 (en) 2012-01-12
CA2632246C (en) 2013-11-26
BRPI0620909A2 (en) 2011-11-29
NZ568884A (en) 2011-06-30
KR101213977B1 (en) 2012-12-20
SI1969902T1 (en) 2013-02-28
WO2007076914A1 (en) 2007-07-12
EA013447B1 (en) 2010-04-30
CA2632246A1 (en) 2007-07-12
NO20082670L (en) 2008-08-04
JP2009522738A (en) 2009-06-11
CN101356856B (en) 2014-03-05
UA91886C2 (en) 2010-09-10
EP1969902B1 (en) 2012-10-10
NO341936B1 (en) 2018-02-26
CN101356856A (en) 2009-01-28
EA200870061A1 (en) 2008-10-30
KR20080090402A (en) 2008-10-08
ES2391574T3 (en) 2012-11-27

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