EP0223769B1 - Ladle stand for treating molten metal - Google Patents

Ladle stand for treating molten metal Download PDF

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Publication number
EP0223769B1
EP0223769B1 EP86890313A EP86890313A EP0223769B1 EP 0223769 B1 EP0223769 B1 EP 0223769B1 EP 86890313 A EP86890313 A EP 86890313A EP 86890313 A EP86890313 A EP 86890313A EP 0223769 B1 EP0223769 B1 EP 0223769B1
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EP
European Patent Office
Prior art keywords
lance
car
ladle
manipulator
carriage
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
Application number
EP86890313A
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German (de)
French (fr)
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EP0223769A1 (en
Inventor
Ernst Riegler
Ernst Zajicek
Hubert Hammerschmid
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Primetals Technologies Austria GmbH
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Voest Alpine Industrienlagenbau GmbH
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Application filed by Voest Alpine Industrienlagenbau GmbH filed Critical Voest Alpine Industrienlagenbau GmbH
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/02—Dephosphorising or desulfurising
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors
    • C21C5/4613—Refractory coated lances; Immersion lances
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors
    • C21C5/462—Means for handling, e.g. adjusting, changing, coupling

Definitions

  • the invention relates to a ladle stand for treating molten metal, in particular for desulfurizing molten steel, with a vertically liftable and lowerable lance carrier arranged over a pan brought into the treatment position, on which a storage container for a treatment agent, in particular a desulfurizing agent, is arranged and with a cavity the lance can be connected in terms of lines, the lance carrier carriage being movable to a lance transfer station arranged to the side of the placed pan.
  • a pan stand of this type is known from DE-A 2 454 776 and the brochure TN from Messo, St 57 d / 2000 VI.79.
  • the lance trolley can be moved along a vertical guide column, which is rotatably attached to the foundation at a lateral distance from the pan brought into the treatment position. By rotating the guide column, the widely projecting lance carrier carriage is pivoted from a position above a pan brought into the treatment position to a lance transfer station for the purpose of lance exchange.
  • the guide column Since the lance trolley is exposed to large vibrations during the treatment process of the molten metal, the guide column must be correspondingly stiff and therefore heavy. Due to the large distance of the lance from the guide column, the guide column is additionally exposed to a large bending stress, which must also be absorbed by a correspondingly stable construction of the guide column and its rotary bearing.
  • the invention aims to avoid these disadvantages and difficulties and has as its object to create a pan stand of the type described above, in which the lance carrier can be moved between the parked pan and the lance transfer station in a simple manner and with little construction, whereby a trouble-free Lance transfer to the lance wagon is ensured without manual manipulation.
  • a fixed vertical rail guide is provided for the lance carriage both above the pan placed in the treatment position and above the lance transfer station and between the upper ends of the two rail guides a transport carriage receiving the lance carriage can be moved, the lance carriage also a lance manipulator holding and releasing a lance is equipped, which can be moved from an operating position to a lance exchange position lying laterally next to the operating position and projecting from the lance carrier carriage and back, and with a coupling device which is arranged above the operating position of the lance manipulator and can be actuated by an actuating device for connecting the line Storage container and the cavity of the lance is provided.
  • the fixed rail guides are, since the lance carrier carriage only has to project a little from the rail guides, they are light and nevertheless stable and can be designed with sufficient rigidity.
  • Vibrations on the guide rails and thus inaccuracies when guiding the lance can be avoided. This results in a high level of security in the automatic exchange of a lance by means of the lance manipulator at the lance transfer station, so that manual intervention by the operating personnel can be avoided.
  • the lance manipulator is preferably formed by a carriage which is horizontally displaceably mounted in the lance carrier and which can be actuated by means of an actuating device, to which a gripping tongs which can be actuated by means of a further actuating device is attached.
  • FIG. 1 shows an overall side view of the pan stand
  • FIG. 2 shows a view in the direction of arrow II in FIG. 1
  • FIG. 3 shows a detail of FIG. 2 on an enlarged scale
  • Fig. 4 shows a section taken along the line IV-IV of Fig. 3.
  • a parking space arranged on the foundation for a pan 2 at a pan stand, to which the pan 2 can be brought by means of a pan carriage 3 which can be moved along rails 3 '.
  • the pan 2 is covered with a lid 4, which has an opening for introducing a treatment lance 5.
  • a lance transfer station 6 is also arranged on the foundation, which is formed by a horizontally arranged turntable 7, on the circumference of which lance holders 8 are evenly distributed, into which the lances 5 can be hung with their upper end 9.
  • the turntable 7 is supported on the foundation via a support column 10.
  • the lances each have a collar 11 at their upper end, with which they hang on the lance holders 8.
  • the upper ends of the two rail guides are located at the same height just below a stationary horizontal support 15. Along the support 15, a transport carriage 16 can be moved from one rail guide to the other or back.
  • This transport carriage 16 is aligned with the rails 14 of the rail guides 12, 13 Nete rails 17 that end just above the rails 14. He can thus selectively move from a first position A, shown in FIG. 1 with full lines, in which his rails 17 are aligned with the rails 14 of the rail guide 12 arranged above the pan parking space 1, into the one shown in FIG. 1 with dash-dotted lines Position B, in which its rails 17 are aligned with the rails 14 of the rail guide 13 arranged above the lance transfer station 6, are moved.
  • the drive motor is designated 18, the energy is supplied via flexible trailing cables 19.
  • a lance carrying carriage 20 For lifting and lowering the lances 5 or for taking over a lance 5 from the lance transfer station 6, a lance carrying carriage 20 is used, which can be moved in the vertical direction along the rail guides 12, 13, the lancing carrying carriage 20 by means of a cable winch 21 arranged in the transport carriage 16 Drive motor is designated 22, can be raised and lowered.
  • the transport carriage 16 is arranged at such a height above the pan lid 4 that the lance 5 can be lifted completely out of the pan 2, the lance carrier carriage 20 being raised onto the rails 17 of the transport carriage 16 in the raised state of the lance 5, so that it can be moved with the transport carriage 16 from one rail guide 12 to the other rail guide 13 and back.
  • the lance carrier car 20 has at its lower end a lance manipulator 24 which is moved by a carriage which can be moved horizontally by means of a pressure medium cylinder 23 is formed, which is guided by means of guide rollers 25 along brackets 26 projecting horizontally from the lance carrier carriage 20.
  • a gripper 27 is attached to the carriage 24, the jaws 28 of which can be opened and closed by means of a pressure medium cylinder 29 via a lever linkage 30.
  • the lances 5 are hollow and the lance carrier carriage 20 has a storage container 32 for the treatment agent.
  • This reservoir 32 is connected to the cavity 34 of the lance 5 via a line 33 which transports the treatment agent, a coupling device 35 being provided for automatically connecting this line 33 to the cavity 34 of the lance.
  • This coupling device 35 is formed by an angular tubular piece 36 which can be raised and lowered by means of a pressure medium cylinder 37.
  • One end of the angular pipe section 36 is connected to the flexible line 33.
  • the other end of the angular pipe section has a cone 38 which can be inserted into a frustoconical opening 39 at the upper end of the lance 5.
  • the turntable at the lance transfer station can be rotated step by step by means of a step-by-step mechanism, so that the lance manipulator 24 of the lance trolley 20 - when this is positioned next to the lance transfer station 6 (see FIG. 4) - always has a free lance holder 8 for dispensing a used lance 5 or a lance holder 8 having a lance 5 is opposite.
  • the lance transfer station 6 is equipped with lances 5 by means of a lifting device 40 which can be moved in the horizontal direction and which grips lances from a lance transport carriage 41.
  • bunkers 42 arranged above the pan parking space 1 are used, from which treatment agent can be removed in certain preselectable quantities by means of conveying and metering devices 43 and fed to the storage container 32 by means of a further conveying line 44.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Description

Die Erfindung betrifft einen Pfannenstand zum Behandeln schmelzflüssigen Metalles, insbesondere zum Entschwefeln von Stahlschmelze, mit einem über einer in Behandlungsstellung gebrachten Pfanne angeordneten, vertikal heb- und senkbaren Lanzentragwagen, an dem ein Vorratsbehälter für ein Behandlungsmittel, insbesondere ein Entschwefelungsmittel, angeordnet und mit einem Hohlraum der Lanze leitungsmäßig verbindbar ist, wobei der Lanzentragwagen zu einer seitlich der abgestellten Pfanne angeordneten Lanzenübergabestation bewegbar ist.The invention relates to a ladle stand for treating molten metal, in particular for desulfurizing molten steel, with a vertically liftable and lowerable lance carrier arranged over a pan brought into the treatment position, on which a storage container for a treatment agent, in particular a desulfurizing agent, is arranged and with a cavity the lance can be connected in terms of lines, the lance carrier carriage being movable to a lance transfer station arranged to the side of the placed pan.

Ein Pfannenstand dieser Art ist aus der DE-A 2 454 776 bzw. dem Prospekt TN der Firma Messo, St 57 d/2000 VI.79 bekannt. Der Lanzentragwagen ist entlang einer vertikalen Führungssäule, die im seitlichen Abstand von der in Behandlungsstellung gebrachten Pfanne am Fundament drehbar befestigt ist, verfahrbar. Durch Drehen der Führungssäule wird der weit auskragende Lanzentragwagen von einer Lage oberhalb einer in Behandlungsstellung gebrachten Pfanne zu einer Lanzenübergabestation zwecks Lanzenaustausches geschwenkt.A pan stand of this type is known from DE-A 2 454 776 and the brochure TN from Messo, St 57 d / 2000 VI.79. The lance trolley can be moved along a vertical guide column, which is rotatably attached to the foundation at a lateral distance from the pan brought into the treatment position. By rotating the guide column, the widely projecting lance carrier carriage is pivoted from a position above a pan brought into the treatment position to a lance transfer station for the purpose of lance exchange.

Da während des Behandlungsvorganges der Metallschmelze der Lanzentragwagen großen Vibrationsbelastungen ausgesetzt ist, muß die Führungssäule entsprechend steif und damit schwer gebaut sein. Durch den großen Abstand der Lanze von der Führungssäule wird die Führungssäule zusätzlich einer großen Biegebeanspruchung ausgesetzt, die ebenfalls durch eine entsprechend stabile Konstruktion der Führungssäule und deren Drehlagerung aufgenommen werden muß.Since the lance trolley is exposed to large vibrations during the treatment process of the molten metal, the guide column must be correspondingly stiff and therefore heavy. Due to the large distance of the lance from the guide column, the guide column is additionally exposed to a large bending stress, which must also be absorbed by a correspondingly stable construction of the guide column and its rotary bearing.

Bei den bekannten Konstruktionen kann es infolge der weiten Ausladung der Lanze bzw. des Lanzentragwagens und der damit verbundenen instabilen Führung der Lanze zu Schwierigkeiten bei der Übergabe bzw. beim Austausch der Lanzen an der Lanzenübergabestation kommen, so daß eine automatische Übergabe nur sehr schwer verwirklichbar ist.In the known constructions, due to the wide projection of the lance or the lance carriage and the associated unstable guidance of the lance, difficulties can arise in the transfer or replacement of the lances at the lance transfer station, so that automatic transfer is very difficult to achieve .

Die Erfindung bezweckt die Vermeidung dieser Nachteile und Schwierigkeiten und stellt sich die Aufgabe, einen Pfannenstand der eingangs beschriebenen Art zu schaffen, bei dem der Lanzentragwagen in einfacher Weise und mit einer wenig aufwendigen Konstruktion zwischen der abgestellten Pfanne und der Lanzenübergabestation bewegbar ist, wobei eine störungsfreie Lanzenübergabe an den Lanzentragwagen ohne händische Manipulationen sichergestellt ist.The invention aims to avoid these disadvantages and difficulties and has as its object to create a pan stand of the type described above, in which the lance carrier can be moved between the parked pan and the lance transfer station in a simple manner and with little construction, whereby a trouble-free Lance transfer to the lance wagon is ensured without manual manipulation.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß sowohl oberhalb der in Behandlungsstellung gebrachten Pfanne als auch oberhalb der Lanzenübergabestation jeweils eine ortsfeste vertikale Schienenführung für den Lanzentragwagen vorgesehen ist und zwischen den oberen Enden der beiden Schienenführungen ein den Lanzentragwagen aufnehmender Transportwagen verfahrbar ist, wobei der Lanzentragwagen mit einem eine Lanze haltenden sowie freigebenden Lanzenmanipulator ausgestattet ist, der von einer Betriebsposition in eine seitlich neben der Betriebsposition liegende, vom Lanzentragwagen auskragende Lanzenaustauschposition und retour bewegbar ist, und mit einer oberhalb der Betriebsposition des Lanzenmanipulators angeordneten, von einem Stellgerät betätigbaren Ankuppelvorrichtung zum leitungsmäßigen Verbinden des Vorratsbehälters und des Hohlraumes der Lanze versehen ist.This object is achieved in that a fixed vertical rail guide is provided for the lance carriage both above the pan placed in the treatment position and above the lance transfer station and between the upper ends of the two rail guides a transport carriage receiving the lance carriage can be moved, the lance carriage also a lance manipulator holding and releasing a lance is equipped, which can be moved from an operating position to a lance exchange position lying laterally next to the operating position and projecting from the lance carrier carriage and back, and with a coupling device which is arranged above the operating position of the lance manipulator and can be actuated by an actuating device for connecting the line Storage container and the cavity of the lance is provided.

Die ortsfesten Schienenführungen sind, da der Lanzentragwagen von den Schienenführungen nur wenig auskragen muß, leicht und trotzdem stabil und eine genügende Steifigkeit aufweisend ausführbar.The fixed rail guides are, since the lance carrier carriage only has to project a little from the rail guides, they are light and nevertheless stable and can be designed with sufficient rigidity.

Schwingungen an den Führungsschienen und damit Ungenauigkeiten bei der Führung der Lanze können dadurch vermieden werden. Daraus resultiert eine hohe Sicherheit beim automatischen Austausch ei2 ner Lanze mittels des Lanzenmanipulators an der Lanzenübergabestation, so daß ein händisches Eingreifen des Bedienungspersonales vermieden werden kann.Vibrations on the guide rails and thus inaccuracies when guiding the lance can be avoided. This results in a high level of security in the automatic exchange of a lance by means of the lance manipulator at the lance transfer station, so that manual intervention by the operating personnel can be avoided.

Vorzugsweise ist der Lanzenmanipulator von einem im Lanzenträger horizontal verschiebbar gelagerten Wagen, der mittels einer Stelleinrichtung betätigbar ist, gebildet, an dem eine mittels einer weiteren Stelleinrichtung betätigbare Greifzange befestigt ist.The lance manipulator is preferably formed by a carriage which is horizontally displaceably mounted in the lance carrier and which can be actuated by means of an actuating device, to which a gripping tongs which can be actuated by means of a further actuating device is attached.

Die Erfindung ist nachstehend anhand der Zeichnung an einem Ausführungsbeispiel näher erläutert, wobei Fig. 1 eine Gesamtseitenansicht des Pfannenstandes, Fig. 2 eine Ansicht in Richtung des Pfeiles II der Fig. 1 und Fig. 3 ein Detail der Fig. 2 in vergrößertem Maßstab zeigen. Fig. 4 stellt einen nach der Linie IV-IV der Fig. 3 geführten Schnitt dar.The invention is explained in more detail below with reference to the drawing using an exemplary embodiment, wherein FIG. 1 shows an overall side view of the pan stand, FIG. 2 shows a view in the direction of arrow II in FIG. 1 and FIG. 3 shows a detail of FIG. 2 on an enlarged scale . Fig. 4 shows a section taken along the line IV-IV of Fig. 3.

Mit 1 ist ein am Fundament angeordneter Stellplatz für eine Pfanne 2 an einem Pfannenstand bezeichnet, zu dem die Pfanne 2 mittels eines Pfannenwagens 3, der entlang von Schienen 3' verfahrbar ist, gebracht werden kann. Die Pfanne 2 ist mit einem Deckel 4, der eine Öffnung zum Einbringen einer Behandlungslanze 5 aufweist, bedeckt.1 denotes a parking space arranged on the foundation for a pan 2 at a pan stand, to which the pan 2 can be brought by means of a pan carriage 3 which can be moved along rails 3 '. The pan 2 is covered with a lid 4, which has an opening for introducing a treatment lance 5.

Seitlich neben dem Stellplatz 1 ist eine Lanzenübergabestation 6 ebenfalls am Fundament angeordnet, die von einer horizontal angeordneten Drehscheibe 7 gebildet ist, an deren Umfang gleichmäßig verteilt Lanzenhalterungen 8 vorgesehen sind, in die die Lanzen 5 mit ihrem oberen Ende 9 einhängbar sind. Die Drehscheibe 7 ist über eine Stützsäule 10 am Fundament abgestützt. Die Lanzen weisen an ihrem oberen Ende jeweils einen Bund 11 auf, mit dem sie an den Lanzenhalterungen 8 hängen.Laterally next to the parking space 1, a lance transfer station 6 is also arranged on the foundation, which is formed by a horizontally arranged turntable 7, on the circumference of which lance holders 8 are evenly distributed, into which the lances 5 can be hung with their upper end 9. The turntable 7 is supported on the foundation via a support column 10. The lances each have a collar 11 at their upper end, with which they hang on the lance holders 8.

Sowohl oberhalb des Pfannen-Stellplatzes 1 als auch oberhalb der Lanzenübergabestation 6 ist jeweils in geringem seitlichem Abstand eine ortsfeste vertikale Schienenführung 12, 13, die jeweils von zwei zueinander parallelen Schienen 14, die fachwerkartig versteift sind, gebildet ist, vorgesehen. Die oberen Enden der beiden Schienenführungen befinden sich in gleicher Höhe knapp unterhalb eines ortsfesten horizontalen Trägers 15. Entlang des Trägers 15 ist ein Transportwagen 16 von der einen Schienenführung zur anderen bzw. retour verfahrbar.A fixed vertical rail guide 12, 13, which is formed in each case by two parallel rails 14, which are stiffened in the manner of a framework, is provided both above the pan parking space 1 and above the lance transfer station 6 at a short lateral distance. The upper ends of the two rail guides are located at the same height just below a stationary horizontal support 15. Along the support 15, a transport carriage 16 can be moved from one rail guide to the other or back.

Dieser Transportwagen 16 weist zu den Schienen 14 der Schienenführungen 12, 13 fluchtend angeordnete Schienen 17 auf, die knapp oberhalb der Schienen 14 enden. Er kann somit wahlweise von einer ersten, in Fig. 1 mit vollen Linien dargestellten Position A, in der seine Schienen 17 mit den Schienen 14 der oberhalb des Pfannen-Stellplatzes 1 angeordneten Schienenführung 12 fluchten, in die in Fig. 1 mit strichpunktierten Linien dargestellte Position B, in der seine Schienen 17 mit den Schienen 14 der oberhalb der Lanzenübergabestation 6 angeordneten Schienenführung 13 fluchten, verfahren werden. Der Antriebsmotor ist mit 18 bezeichnet, die Energieversorgung erfolgt über biegsame Schleppkabel 19.This transport carriage 16 is aligned with the rails 14 of the rail guides 12, 13 Nete rails 17 that end just above the rails 14. He can thus selectively move from a first position A, shown in FIG. 1 with full lines, in which his rails 17 are aligned with the rails 14 of the rail guide 12 arranged above the pan parking space 1, into the one shown in FIG. 1 with dash-dotted lines Position B, in which its rails 17 are aligned with the rails 14 of the rail guide 13 arranged above the lance transfer station 6, are moved. The drive motor is designated 18, the energy is supplied via flexible trailing cables 19.

Zum Heben und Senken der Lanzen 5 bzw. zur Übernahme einer Lanze 5 von der Lanzenübergabestation 6 dient ein Lanzentragwagen 20, der entlang der Schienenführungen 12, 13 in vertikaler Richtung verfahrbar ist, wobei der Lanzentragwagen 20 mittels einer im Transportwagen 16 angeordneten Seilwinde 21, deren Antriebsmotor mit 22 bezeichnet ist, gehoben und gesenkt werden kann.For lifting and lowering the lances 5 or for taking over a lance 5 from the lance transfer station 6, a lance carrying carriage 20 is used, which can be moved in the vertical direction along the rail guides 12, 13, the lancing carrying carriage 20 by means of a cable winch 21 arranged in the transport carriage 16 Drive motor is designated 22, can be raised and lowered.

Der Transportwagen 16 ist in einer solchen Höhe oberhalb des Pfannendeckels 4 angeordnet, daß die Lanze 5 komplett aus der Pfanne 2 gehoben werden kann, wobei der Lanzentragwagen 20 in gehobenem Zustand der Lanze 5 auf die Schienen 17 des Transportwagens 16 aufgefahren ist, so daß er mit dem Transportwagen 16 von der einen Schienenführung 12 zur anderen Schienenführung 13 und retour bewegbar ist.The transport carriage 16 is arranged at such a height above the pan lid 4 that the lance 5 can be lifted completely out of the pan 2, the lance carrier carriage 20 being raised onto the rails 17 of the transport carriage 16 in the raised state of the lance 5, so that it can be moved with the transport carriage 16 from one rail guide 12 to the other rail guide 13 and back.

Zur automatischen Abgabe einer Lanze 5 vom Lanzentragwagen 20 auf die Drehscheibe 7 bzw. Übernahme einer Lanze 5 von der Drehscheibe 7 auf den Lanzentragwagen 20 weist der Lanzentragwagen 20 an seinem unteren Ende einen Lanzenmanipulator 24 auf, der von einem mittels eines Druckmittelzylinders 23 horizontal verfahrbaren Wagen gebildet ist, der mittels Führungsrollen 25 entlang vom Lanzentragwagen 20 horizontal auskragender Konsolen 26 geführt ist. An dem Wagen 24 ist eine Greifzange 27 befestigt, deren Backen 28 mittels eines Druckmittelzylinders 29 über ein Hebelgestänge 30 geöffnet und geschlossen werden können.For the automatic delivery of a lance 5 from the lance carrier car 20 to the turntable 7 or to take over a lance 5 from the turntable 7 to the lance carrier car 20, the lance carrier car 20 has at its lower end a lance manipulator 24 which is moved by a carriage which can be moved horizontally by means of a pressure medium cylinder 23 is formed, which is guided by means of guide rollers 25 along brackets 26 projecting horizontally from the lance carrier carriage 20. A gripper 27 is attached to the carriage 24, the jaws 28 of which can be opened and closed by means of a pressure medium cylinder 29 via a lever linkage 30.

Wie aus Fig. 3 ersichtlich, kann durch Verfahren des Wagens 24 in die strichpunktiert eingezeichnete Lanzenaustauschposition C eine am Lanzentragwagen 20 hängende Lanze 5 mittels der Zangenbacken 28 auf die Drehscheibe 7 geschoben werden. Durch Zurückfahren des Wagens 24 in die mit vollen Linien dargestellte Betriebsposition D kann eine von der Greifzange 27 erfaßte Lanze 5 auf eine am Lanzentragwagen 20 vorgesehenen Lanzenhalterung 31 geschoben werden.As can be seen from FIG. 3, by moving the carriage 24 into the lance exchange position C shown in broken lines, a lance 5 hanging on the lance carrier carriage 20 can be pushed onto the turntable 7 by means of the pliers jaws 28. By moving the carriage 24 back into the operating position D shown with solid lines, a lance 5 gripped by the gripping tongs 27 can be pushed onto a lance holder 31 provided on the lance carrying carriage 20.

Zwecks Zuführung eines Behandlungsmittels für das in der Pfanne 2 befindliche schmelzflüssige Metall sind die Lanzen 5 hohl ausgebildet und weist der Lanzentragwagen 20 einen Vorratsbehälter 32 für das Behandlungsmittel auf. Dieser Vorratsbehälter 32 steht über eine das Behandlungsmittel transportierende Leitung 33 mit dem Hohlraum 34 der Lanze 5 in Verbindung, wobei eine Ankuppelvorrichtung 35 zur automatischen Verbindung dieser Leitung 33 mit dem Hohlraum 34 der Lanze vorhanden ist. Diese Ankuppelvorrichtung 35 ist von einem winkelförmigen Rohrstück 36 gebildet, welches mittels eines Druckmittelzylinders 37 heb- und senkbar ist. Ein Ende des winkelförmigen Rohrstückes 36 steht mit der flexiblen Leitung 33 in Verbindung. Das andere Ende des winkelförmigen Rohrstückes weist einen Konus 38 auf, der in eine kegelstumpfförmige Öffnung 39 am oberen Ende der Lanze 5 einsetzbar ist.For the purpose of supplying a treatment agent for the molten metal located in the pan 2, the lances 5 are hollow and the lance carrier carriage 20 has a storage container 32 for the treatment agent. This reservoir 32 is connected to the cavity 34 of the lance 5 via a line 33 which transports the treatment agent, a coupling device 35 being provided for automatically connecting this line 33 to the cavity 34 of the lance. This coupling device 35 is formed by an angular tubular piece 36 which can be raised and lowered by means of a pressure medium cylinder 37. One end of the angular pipe section 36 is connected to the flexible line 33. The other end of the angular pipe section has a cone 38 which can be inserted into a frustoconical opening 39 at the upper end of the lance 5.

Die Drehscheibe an der Lanzenübergabestation ist mittels eines Schrittschaltwerkes schrittweise drehbar, so daß dem Lanzenmanipulator 24 des Lanzentragwagens 20 - wenn dieser neben der Lanzenübergabestation 6 in Stellung gebracht ist (vgl. Fig. 4) - stets eine freie Lanzenhalterung 8 zur Abgabe einer gebrauchten Lanze 5 oder eine eine Lanze 5 aufweisende Lanzenhalterung 8 gegenüberliegt. Die Lanzenübergabestation 6 wird mittels eines in horizontaler Richtung verfahrbaren Hebezeuges 40, welches Lanzen von einem Lanzentransportwagen 41 ergreift, mit Lanzen 5 bestückt.The turntable at the lance transfer station can be rotated step by step by means of a step-by-step mechanism, so that the lance manipulator 24 of the lance trolley 20 - when this is positioned next to the lance transfer station 6 (see FIG. 4) - always has a free lance holder 8 for dispensing a used lance 5 or a lance holder 8 having a lance 5 is opposite. The lance transfer station 6 is equipped with lances 5 by means of a lifting device 40 which can be moved in the horizontal direction and which grips lances from a lance transport carriage 41.

Zum Füllen des Vorratsbehälters 32 des Lanzentragwagens 20 mit Behandlungsmittel dienen oberhalb des Pfannen-Abstellplatzes 1 angeordnete Bunker 42, aus denen Behandlungsmittel mittels Förder- und Dosiereinrichtungen 43 in bestimmten vorwählbaren Mengen entnommen und mittels einer weiteren Förderleitung 44 dem Vorratsbehälter 32 zugeführt werden kann.To fill the storage container 32 of the lance trolley 20 with treatment agent, bunkers 42 arranged above the pan parking space 1 are used, from which treatment agent can be removed in certain preselectable quantities by means of conveying and metering devices 43 and fed to the storage container 32 by means of a further conveying line 44.

Claims (2)

1. Ladle stand for treating molten metal, in particular for desulfurising steel melt, comprising a vertically liftable and lowerable lance carrying car (20) arranged above a ladle (2) placed in the treatment position, on which car a reservoir (32) for a treating agent, in particular a desulfurising agent, is arranged and adapted to communicate with a cavity (34) of the lance (5), the lance carrying car (20) being movable to a lance exchange station (6) provided laterally of the deposited ladle (2), characterised in that a stationary vertical rail guide (12, 13) for the lance carrying car (20) is each provided above the ladle (2) placed in the treatment position and above the lance exchange station (6), and a transport carriage (16) to receive the lance carrying car (20) is displaceable between the upper ends of the two rail guides (12, 13), the lance carrying car (20) being equipped with a lance manipulator (24) holding and releasing a lance (5), which lance manipulator is movable from an operation position (D) into a lance exchange position (C) laterally beside the operation position (D) so as to cantilever from the lance carrying car (20), and back, and being provided with a coupling means (35) arranged above the operation position (D) of the lance manipulator (24) and operable by an actuation unit (37) to provide for communication of the reservoir (32) with the cavity (34) of the lance.
2. Ladle stand according to claim 1, characterised in that the lance manipulator is formed by a car (24) horizontally displaceably mounted in the lance carrier, which car is operable by an actuation means (23), to which grip pliers (2) which are operable by a further actuation means (29) are fastened.
EP86890313A 1985-11-21 1986-11-13 Ladle stand for treating molten metal Expired EP0223769B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3394/85 1985-11-21
AT0339485A AT383832B (en) 1985-11-21 1985-11-21 PAN FOR TREATING MELT LIQUID METALS

Publications (2)

Publication Number Publication Date
EP0223769A1 EP0223769A1 (en) 1987-05-27
EP0223769B1 true EP0223769B1 (en) 1989-03-01

Family

ID=3549876

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EP86890313A Expired EP0223769B1 (en) 1985-11-21 1986-11-13 Ladle stand for treating molten metal

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US (1) US4718645A (en)
EP (1) EP0223769B1 (en)
KR (1) KR870004758A (en)
AT (1) AT383832B (en)
DE (1) DE3662206D1 (en)
ES (1) ES2007285B3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103205528A (en) * 2013-03-26 2013-07-17 鞍钢股份有限公司 Converter oxygen lance limiting device and method
JP5995006B2 (en) * 2013-11-22 2016-09-21 Ｊｆｅスチール株式会社 Impeller replacement device for mechanical stirring desulfurization equipment
CN106086311B (en) * 2016-06-24 2018-06-08 中冶南方工程技术有限公司 A kind of method for reducing KR desulfurization process device mounting heights
CN112973561A (en) * 2021-03-16 2021-06-18 攀钢集团攀枝花钢铁研究院有限公司 Molten iron desulfurization equipment and clamping device for rotary desulfurization of molten iron desulfurization equipment
CN113106193A (en) * 2021-03-24 2021-07-13 唐山科技职业技术学院 Molten iron pretreatment spray gun walking device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3002739A (en) * 1958-06-06 1961-10-03 A J Boynton & Co Carriage for lance and hood
US3149191A (en) * 1959-10-28 1964-09-15 Pennsylvania Engineering Corp Furnace installation
DE1212569B (en) * 1962-08-18 1966-03-17 Gutehoffnungshuette Sterkrade Converter blowing device with several blowing lances
AT254237B (en) * 1963-08-26 1967-05-10 Voest Ag Device for changing lances that can be inserted into metallurgical vessels such as crucibles
DE2454776B2 (en) * 1974-11-15 1976-09-02 Mannesmann AG, 4000 Düsseldorf SYSTEM FOR INTRODUCING TREATMENT AGENTS IN METAL MELT
LU83089A1 (en) * 1981-01-26 1981-06-04 Wurth Anciens Ets Paul DEVICE AND BRACKET FOR CHANGING DIVING LANCES
IN159870B (en) * 1982-12-21 1987-06-13 Wurth Paul Sa

Also Published As

Publication number Publication date
US4718645A (en) 1988-01-12
AT383832B (en) 1987-08-25
EP0223769A1 (en) 1987-05-27
ES2007285B3 (en) 1993-05-16
DE3662206D1 (en) 1989-04-06
KR870004758A (en) 1987-06-01
ATA339485A (en) 1987-01-15

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