EP0164331B1 - Vorrichtung zum Reinigen eines Lanzenkopfes einer in ein metallurgisches Gefäss einbringbaren Lanze - Google Patents

Vorrichtung zum Reinigen eines Lanzenkopfes einer in ein metallurgisches Gefäss einbringbaren Lanze Download PDF

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Publication number
EP0164331B1
EP0164331B1 EP85890094A EP85890094A EP0164331B1 EP 0164331 B1 EP0164331 B1 EP 0164331B1 EP 85890094 A EP85890094 A EP 85890094A EP 85890094 A EP85890094 A EP 85890094A EP 0164331 B1 EP0164331 B1 EP 0164331B1
Authority
EP
European Patent Office
Prior art keywords
lance
head
cleaning
cleaning head
arrangement according
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
EP85890094A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0164331A2 (de
EP0164331A3 (en
Inventor
Hellmuth Smejkal
Walter Rockenschaub
Johann Fohler
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 Austria GmbH
Original Assignee
Voestalpine 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 Voestalpine AG filed Critical Voestalpine AG
Publication of EP0164331A2 publication Critical patent/EP0164331A2/de
Publication of EP0164331A3 publication Critical patent/EP0164331A3/de
Application granted granted Critical
Publication of EP0164331B1 publication Critical patent/EP0164331B1/de
Expired legal-status Critical Current

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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
    • 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
    • C21C5/4693—Skull removal; Cleaning of the converter mouth
    • 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 device for cleaning a lance head of a lance which can be introduced into a metallurgical vessel, in particular a lance carrying a measuring and / or sampling probe, with a cleaning head which is in contact with the lance head during the cleaning process and surrounds the lance head, the cleaning head and the lance is relatively movable in the direction of the lance axis.
  • a device of this type has the disadvantage that the rigidly arranged cleaning head is exposed to the emissions and the heat radiation from the metallurgical vessel. Furthermore, this known device is only suitable for cleaning cylinder surfaces on the lance, whereas the front end surface of the blowing lance cannot be cleaned.
  • a device for detoxifying a blow lance in which a striking tool, which is arranged laterally at a short distance next to the blow lance, can be moved to the blow lance, whereby the tool comes into contact with the cylindrical lance surface and comes on her clinging bear bears off. Careful cleaning and restoration of the exact original lance surface is just as impossible with this known device as cleaning the end face of the blowing lance.
  • lances carrying measuring and / or sampling probes the lance head of which dips into a slag layer during the sampling or measuring process.
  • Such lances such as those used to record temperature and carbon values in molten steel, work with probes that can only be used once, which are pushed onto a contact rod protruding from the front of the lance and again after the measurement has been carried out, i.e. after immersion in the molten steel be pulled off the contact rod. It is inevitable that slag and metal deposits form on the outside and front of the lance. Under certain circumstances - e.g.
  • the invention aims to avoid these disadvantages and difficulties and has as its object to create a device of the type described in the introduction with which it is possible to carefully clean the lance head on its side facing the molten bath in the metallurgical vessel.
  • the cleaning head and the lance can be brought into alignment with one another by means of an adjusting device and that the cleaning head can be set in a rotary movement oscillating about the axis of the lance by means of an oscillating device.
  • the cleaning head can be brought from a position to the side of the metallurgical vessel in alignment with the axis of the lance by means of an adjusting device (this can be done by pivoting or moving the lance using the adjusting device or by pivoting or moving the cleaning head using the adjusting device) , the cleaning head itself is not exposed to the emissions from the metallurgical vessel, so that no deposits can form on the cleaning head itself and that the cleaning head can work exactly at all times.
  • the cleaning head is at least split in two in the direction of the axis of the lance, the parts of the cleaning head being pivotable by means of a spreading device from a spreading position next to the lance head into a working position surrounding the lance head and vice versa.
  • the relative movement in the direction of the axis of the lance between the lance and the cleaning head is advantageously accomplished in that the cleaning head can be raised and lowered in the direction of the axis of the lance by means of a lifting and lowering device. This measure makes it possible to leave the lance in the rest position even during the cleaning process, and it is sufficient to raise or lower the much lighter cleaning head.
  • the cleaning head is expediently mounted on a vertical guide which is arranged on a support which is adjustable in the horizontal direction from and to the axis of the lance.
  • the cleaning head has a two-part housing in which a likewise two-part milling head is rotatably mounted, each of the two parts of the housing being articulated by means of an arm fastened to it on a support slidably mounted on the vertical guides.
  • the two parts of the milling head are expediently articulated by means of articulated rods on a double arm articulated centrally on the support, to which the oscillating device is articulated.
  • each arm is advantageously articulated via a respective articulated bracket to one end of a cross member that can be horizontally displaced from and to the cleaning head, which cross member can be displaced by means of the spreading device mounted on the support, the axes of which are expedient If the milling head is not oscillating, align the arms of the parts of the housing hinged to the support with the axes of the articulated rods hinged to the double arm.
  • the parts of the housing on the parting joints are expediently provided with centering projections which interlock when closed in the working position.
  • the teeth of the milling head preferably form an angle with one another that is smaller than the maximum angle of the rotational oscillation movement.
  • the profile of the teeth of the milling head is advantageously adapted to the profile of the lance head, as a result of which the entire part of the lance head, which is critical with regard to deposits, can be cleaned with a single cleaning process.
  • a measuring lance (also called sub-lance), which is positioned above the mouth 2 of a steelworks converter 3 at a distance 4 next to a blowing lance 5.
  • a contact rod 7 for a measuring probe which extends in the direction of the axis 8 of the lance 1, is provided on the lance head 6 of the measuring lance 1.
  • the lance can be raised and lowered by means of a drive, not shown.
  • the lance 1 dips with the measuring probe pushed onto the contact rod 7 into the melt located in the steelworks converter 3, specifically through the slag floating on the melt, the lance head 6 often being immersed in the slag.
  • the lance head 6 has on its end face 9 an annular recess 10 into which the upper end of the measuring probe can be inserted, so that the penetration of slag or melt between the measuring probe and the contact rod 7 can generally be prevented.
  • This recess 10 and the conical end face 9 of the lance head adjoining the recess must be kept clean of slag or metal deposits in order to ensure that after the measurement, i.e. after removing a measuring probe from the contact rod 7, to be able to pick up a new measuring probe perfectly, the contact between the contact points 11 located at the lower end of the contact rod and the corresponding contact points of the measuring probe being ensured.
  • a device 12 for cleaning the lance head 6 is provided, which is provided with a cleaning head 13, on the upper side of which a milling head 14 is arranged.
  • the cleaning head 13 is formed by two parts 13 ′, 13 ′′, which complement one another to form a hollow cylinder.
  • the parting joints 15 run vertically, that is to say through the axis 16 of the cleaning head 13.
  • the cleaning head 13 has a housing 17, which is likewise divided to which the likewise divided milling head 14 is rotatably supported in the horizontal and vertical directions by means of rollers 18.
  • Each part 17 ′, 17 ′′ of the housing 17 is each provided with a projecting arm 19 which is connected to a support 21 by means of a vertically extending axis 20 is pivotally attached, whereby the parts 17 ', 17 "of the housing 17 and the parts 14', 14" of the milling head 14 mounted in them can be moved like pliers, namely from a spreading position A shown in FIG. 3 with dash-dotted lines into a closed position Working position B, which is shown in Fig. 3 with full lines.
  • the support 21 is supported by means of two vertical guides 22 on a support 23 in the direction of the axis 16 of the cleaning head 13 so that it can be raised and lowered.
  • a pressure medium cylinder 24, which is articulated on the carrier, serves for lifting and lowering, the piston rod 25 of which is articulated on a rocker arm 26 which is articulated on the carrier 23 by means of a pivot axis 27.
  • a link 28 is articulated on the rocker arm 26, the other end of which is articulated to the support 21, so that a pivoting movement of the rocker arm 26 about its pivot axis 27 causes the support 21 to be raised and lowered.
  • a pressure medium cylinder 29 attached to the support 21 is used, the piston rod 30 of which engages approximately centrally on a cross member 31, which cross member 31 has one end 32, 33 in each case via a Articulated bracket 34 is connected in an articulated manner to an arm 19 projecting from the parts 17 ', 17 "of the housing 17.
  • a horizontally directed semicircular plate 36 is provided on each part 14 ′, 14 ′′ of the milling head 14, both of which lie within the housing 17 of the cleaning head 13.
  • One of the arms of the double arm 38 engages eccentrically, ie at a distance 40 from the pivot axis 39, the piston rod 41 of a pressure medium cylinder 42, which is supported on the support 21.
  • Fig. 3 are aligned with a non-oscillating milling head 14, i. H. in the middle position of the double arm 38, the axes 43 with which the articulated rods 37 are fastened to the double arm 38, with the axes 20 with which the arms 19 are articulated on the support 21.
  • the milling head parts 14 ′, 14 ′′ do not perform any rotational movement when the cleaning head 13 is spread or closed.
  • guide rollers 44 rotatably mounted on the cross member 31 are used. which are guided on a guide ruler 45, which is attached to the support 21.
  • both parts 17', 17" of the housing 17 are provided with centering projections 46 projecting beyond the parting lines 15 Mistake.
  • cylindrical guide surfaces 47 are also provided in the housing 17, each of which is formed by a half circular plate 48 on which the centering extensions 46 are advantageously provided.
  • radially arranged adjusting screws 49 are provided in the plates 36, the ends 50 of which abut the contact rod 7.
  • the teeth 51 of the milling head 14 have a profile adapted to the lance head 6. Seen in the floor plan, they form an angle 52 with one another that is smaller than the maximum angle of the rotary oscillation movement.
  • a cover 53 mounted on the milling head (it is also of a split design) serves to protect the rollers 18.
  • the support 23 carrying the support 21 can be displaced or swiveled laterally next to the converter 3 into the position D shown in FIGS. 2 and 3 in the direction of the double arrow 55 by means of an actuating device 54 in FIG. 1 which aligns the axis 16 of the cleaning head 13 brought into the working position B with the axis 8 of the lance 1.
  • the function of the device is as follows:
  • the carrier 23 of the device 12 is displaced or pivoted into the position D shown in FIGS. 2 and 3 by means of the adjusting device 54.
  • the parts 13 ', 13 "of the cleaning head 13 are in the spreading position A and the support 21 is in the lowered position shown in full lines in FIG. 2.
  • the parts 13', 13" of the cleaning head 13 are then pivoted into the working position B, the support 21 and thus the cleaning head 13 are raised to the position shown in dash-dotted lines in FIG. 2 and at the same time the milling head 14 is set in an oscillating rotary movement.
  • the cleaning head 13 is lowered and its parts 13 ′, 13 ′′ are brought into the spreading position A.
  • the carrier 23 is then pivoted or moved away from the region of the metallurgical vessel with the aid of the adjusting device 54.
  • the invention is not limited to the embodiment shown in the drawing, but can be modified in various ways. You can e.g. B. can also be used for removing metal nozzles and slag splashes attached to the nozzle star of blowing lances, the teeth of the milling head 14 being adapted to the contour of the nozzle star. In this case, the housing 17 is centered on the blowing lance itself; it extends from the milling head 14 upwards.
  • the device 12 according to the invention is suitable for cleaning lance heads of any kind, e.g. B. also for lances that are used in pans or other metallurgical vessels.
  • divisible brushes for example wire brushes, which are adapted to the contour of the lance head.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
EP85890094A 1984-05-08 1985-04-17 Vorrichtung zum Reinigen eines Lanzenkopfes einer in ein metallurgisches Gefäss einbringbaren Lanze Expired EP0164331B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0150784A AT381795B (de) 1984-05-08 1984-05-08 Vorrichtung zum reinigen eines lanzenkopfes einer in ein metallurgisches gefaess einbringbaren lanze
AT1507/84 1984-05-08

Publications (3)

Publication Number Publication Date
EP0164331A2 EP0164331A2 (de) 1985-12-11
EP0164331A3 EP0164331A3 (en) 1986-04-02
EP0164331B1 true EP0164331B1 (de) 1988-06-01

Family

ID=3515233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85890094A Expired EP0164331B1 (de) 1984-05-08 1985-04-17 Vorrichtung zum Reinigen eines Lanzenkopfes einer in ein metallurgisches Gefäss einbringbaren Lanze

Country Status (8)

Country Link
US (1) US4591134A (ru)
EP (1) EP0164331B1 (ru)
JP (1) JPH0723889B2 (ru)
AT (1) AT381795B (ru)
CA (1) CA1243202A (ru)
DE (1) DE3563069D1 (ru)
SU (1) SU1447290A3 (ru)
UA (1) UA2123A1 (ru)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2679570B1 (fr) * 1991-07-25 1993-11-12 Sollac Dispositif de decrassage d'une lance de soufflage dans un recipient metallurgique, notamment un convertisseur d'acierie.
US7541603B2 (en) * 2006-09-27 2009-06-02 Asml Netherlands B.V. Radiation system and lithographic apparatus comprising the same
AT510292B1 (de) * 2011-04-11 2012-03-15 Siemens Vai Metals Tech Gmbh Bestimmung der position eines kontaktstabes an einem sondenhalter einer hüttentechnischen sonde
CN103014226B (zh) * 2012-11-28 2014-04-02 夏俊双 转炉氧枪粘渣自动清理装置
DE102014106669B4 (de) 2014-05-12 2023-08-24 Thielenhaus Technologies Gmbh Vorrichtung und Verfahren zur mechanischen Nachbearbeitung einer Oberfläche eines Werkstückes
DE102016120334A1 (de) * 2016-10-25 2018-05-09 Sms Group Gmbh Vorrichtung und Verfahren zur Entfernung von metallischen und nichtmetallischen Anbackungen an Einblaslanzen beim Konvertereinsatz

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU68908A1 (ru) * 1973-01-22 1974-02-11
DE2521833A1 (de) * 1975-05-16 1976-11-25 Krupp Gmbh Verfahren zum diskontinuierlichen messen in der schmelze eines tiegels und/oder entnehmen von proben aus dem tiegel und einrichtung zur durchfuehrung des verfahrens
LU73846A1 (ru) * 1975-11-21 1977-05-31
US4226407A (en) * 1979-03-26 1980-10-07 Bethlehem Steel Corporation Metallurgical lance deskuller
DE3106234A1 (de) * 1981-02-20 1982-09-02 Fried. Krupp Gmbh, 4300 Essen "verfahren und vorrichtung zur beseitigung von ansaetzen an bezueglich eines metallurgischen gefaesses beweglichen lanzen"

Also Published As

Publication number Publication date
JPH0723889B2 (ja) 1995-03-15
US4591134A (en) 1986-05-27
ATA150784A (de) 1986-04-15
CA1243202A (en) 1988-10-18
DE3563069D1 (en) 1988-07-07
JPS60250254A (ja) 1985-12-10
UA2123A1 (ru) 1994-12-26
EP0164331A2 (de) 1985-12-11
AT381795B (de) 1986-11-25
EP0164331A3 (en) 1986-04-02
SU1447290A3 (ru) 1988-12-23

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