EP0056944B1 - Dispositif pour injecter des matières dans un bain d'acier - Google Patents

Dispositif pour injecter des matières dans un bain d'acier Download PDF

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Publication number
EP0056944B1
EP0056944B1 EP82100134A EP82100134A EP0056944B1 EP 0056944 B1 EP0056944 B1 EP 0056944B1 EP 82100134 A EP82100134 A EP 82100134A EP 82100134 A EP82100134 A EP 82100134A EP 0056944 B1 EP0056944 B1 EP 0056944B1
Authority
EP
European Patent Office
Prior art keywords
arms
shaft
accordance
guide
fact
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
EP82100134A
Other languages
German (de)
English (en)
Other versions
EP0056944A3 (en
EP0056944A2 (fr
Inventor
Pierre Mailliet
Léon Ulveling
Gilbert Bernard
Nico Reiffers
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.)
Paul Wurth SA
Original Assignee
Paul Wurth SA
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 Paul Wurth SA filed Critical Paul Wurth SA
Priority to AT82100134T priority Critical patent/ATE8665T1/de
Publication of EP0056944A2 publication Critical patent/EP0056944A2/fr
Publication of EP0056944A3 publication Critical patent/EP0056944A3/de
Application granted granted Critical
Publication of EP0056944B1 publication Critical patent/EP0056944B1/fr
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
    • C21C5/4606—Lances or injectors
    • C21C5/462—Means for handling, e.g. adjusting, changing, coupling
    • 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
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/18—Charging particulate material using a fluid carrier
    • 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

Definitions

  • the present invention relates to a holding and guiding device of a submersible lance through which the substances are introduced into the molten steel with the aid of a carrier gas.
  • the immersion lance is immersed or drawn out into the molten steel by means of a device which comprises a vertically arranged mount which is designed as a guide for an immersion lance holder which is lowered or raised by an electrical lifting mechanism.
  • the carriage itself is arranged so that the immersion lance can be inserted in the middle of the molten steel.
  • the present invention is based on the object of proposing a device which, in addition to precisely guiding the immersion lance into the molten steel, is able to demonstrate an extremely extensive robustness which absorbs the vibrations caused by the chemical reactions.
  • the goal is achieved by a bracket. and guide device of a diving lance according to claim 1, by means of which the substances are introduced into the molten steel with the aid of a carrier gas.
  • the lifting or lowering of the immersion lance is preferably achieved by a hydraulically operated cylinder arranged vertically on the console.
  • the entire device can be pivoted horizontally about an axis arranged vertically within the console.
  • a horizontally arranged hydraulically actuated cylinder is preferably also provided for this pivoting process.
  • a steel pan 1 and a diving lance 2 can be seen in the rest position, that is, in the raised position.
  • the immersion lance 2 is connected to the device according to the invention via a fixed triangle 11.
  • a bracket 3 On a vertical axis 12, a bracket 3 is rotatably arranged via, for example, ball bearings. A hydraulically actuated cylinder 13 is also attached to the bracket 3, which causes the diving lance 2 to be raised or lowered. When the immersion lance 2 is in the rest position, the cylinder piston rod 14 is in the extended position.
  • An arm 4 is provided on the console 3 itself via an axis 15b, which arm is connected at its upper end to a second arm 5 via a further axis 15g.
  • the diving lance holder 11 is articulated via an axis 15j.
  • a guide arm 7 engages the piston rod 14 at one end via an axis 15c and is connected to the arm 5 at its other end via a further axis 15h. It should be noted here that the guide arm 7 is absolutely parallel to the arm 4.
  • a second guide arm 6 connects the arm 4 to the guide arm 7 via two axes 15d and 15e. The guide arm 6 is also arranged parallel to the arm 5. In order to avoid a possible deviation of the diving lance 2 during the lowering or lifting from the vertical axis, it is necessary that the centers of the axes 15b, 15c and 15j are on an imaginary line 8.
  • the two axes 15c and 15e could be designed as a single one, whereby the condition that the guide arm 6 is parallel to the arm 5 must still be fulfilled. This will of course shift the point of attack 15d on arm 4. For design reasons, however, the alternative shown in the figures has been retained.
  • a guide which essentially consists of two guide rods 9 and 10 which are connected to one another via an axis 15f.
  • the guide rod 9 is connected at its end opposite the axis 15f to the console 3 via an axis 15a and the guide rod 10 is connected to the immersion lance holder 11 via an axis 15i.
  • the axes 15f and 15g are connected to one another via a connecting member 17. It should also be emphasized that the imaginary lines between the axes 15f and 15g and between the axes 15i and 15j are parallel to the cylinder 13 and the piston rod 14, respectively.
  • an adaptation device 16 is preferably provided comprising a set screw as a further fastening.
  • the rotation of the console 3 with the entire device about the axis 12 can be achieved by a device known per se, for. B. via hydraulic cylinder or electric motor with gear.
  • the position of the immersion lance 2 can be displayed continuously, for example via an angle sensor in the axis 15a or 15b.
  • FIG. 2 shows the immersion lance 2 in the working position d. H. inserted into the steel pan 1. It should be noted here that the piston rod 14 has moved into the cylinder 13. However, the piston rod 14 could easily be brought into any position between the rest and working positions.
  • FIG. 3 shows a schematic representation of the arrangement between the hydraulic cylinder 13 and the immersion lance holder 11.
  • the vertical connecting line 23 between the two axes 15a and 15b is assumed as the reference line.
  • the ratio of the distance a between the hydraulic cylinder 13 and the reference line 23 to the distance b between the lance holder 11 and the reference line 23 is equal to the ratio of the stroke A of the hydraulic cylinder 13 to the stroke B of the submersible lance holder 11
  • the optimal conditions between the individual values specified and the force of the hydraulic cylinder can be determined.
  • FIG. 4 shows a schematic representation of the influence of a horizontal displacement of the hydraulic cylinder 13 on the immersion lance holder 11, which is shown only as a line in this figure.
  • Moving the cylinder 13 from position 13a to position 13b means increasing the distance to the reference line 23 from a to a l .
  • this offset means a displacement of the distance to the reference line 23 from b to b 1 .
  • the ratio a to a 1 is equal to the ratio b to b 1 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Processing Of Solid Wastes (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Furnace Charging Or Discharging (AREA)

Claims (8)

1. Dispositif de support et de guidage d'une lance immergée, pour l'injection de matières à l'aide d'un gaz propulseur dans un bain d'acier, caractérisé en ce que le dispositif comprend deux bras (4, 5) articulés ensemble par un axe (15g), ainsi que deux bras de guidage (6, 7) disposés parallèlement aux bras (4, 5), une console centrale (3), un support (11) de lance immergée et aussi un dispositif (13) pour soulever ou abaisser les deux bras (4, 5) avec la lance immergée (2), qui est articulée sur l'un des bras de guidage (7), les deux bras (4 et 5) étant reliés à la console (3) ou au support de lance (11) à leur extrémité opposée à l'axe (15g) par les axes (15b) ou (15j) respectivement.
2. Dispositif selon revendication 1, caractérisé par un élément de guidage comprenant deux tiges de guidage (9, 10) disposées parallèlement aux deux bras (4, 5) ainsi qu'une pièce de jonction (17) entre les tiges de guidage (9, 10) et les bras (4, 5).
3. Dispositif selon les revendications 1 et 2, caractérisé en ce que la console (3) est disposée de façon à pouvoir tourner horizontalement sur un axe vertical (12).
4. Dispositif selon les revendications 1 à 3, caractérisé en ce que le soulèvement ou l'abaissement de la lance immergée (2) s'effectuent au moyen d'un cylindre (13) à commande hydraulique.
5. Dispositif selon revendication 4, caractérisé par un support réglable (16, 18) du cylindre (13).
6. Dispositif selon revendication 3, caractérisé par le fait que la rotation de la console (3) sur l'axe (12) s'effectue au moyen d'un cylindre.
7. Dispositif selon revendication 3, caractérisé en ce que la rotation de la console (3) sur l'axe (12) s'effectue au moyen d'un moteur électrique et d'une transmission.
8. Dispositif selon revendication 2, caractérisé en ce que la position de la lance immergée (2) est indiquée en continu par un indicateur de position disposé sur l'axe (15a) de la tige de guidage (9) ou sur l'axe (15b) d'un bras (4).
EP82100134A 1981-01-26 1982-01-11 Dispositif pour injecter des matières dans un bain d'acier Expired EP0056944B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82100134T ATE8665T1 (de) 1981-01-26 1982-01-11 Vorrichtung zum einblasen von substanzen in eine stahlschmelze.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU83090A LU83090A1 (de) 1981-01-26 1981-01-26 Einrichtung zum einblasen von produkten in die stahlschmelze
LU83090 1981-01-26

Publications (3)

Publication Number Publication Date
EP0056944A2 EP0056944A2 (fr) 1982-08-04
EP0056944A3 EP0056944A3 (en) 1982-08-18
EP0056944B1 true EP0056944B1 (fr) 1984-07-25

Family

ID=19729573

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82100134A Expired EP0056944B1 (fr) 1981-01-26 1982-01-11 Dispositif pour injecter des matières dans un bain d'acier

Country Status (5)

Country Link
EP (1) EP0056944B1 (fr)
AT (1) ATE8665T1 (fr)
AU (1) AU7929282A (fr)
DE (1) DE3260409D1 (fr)
LU (1) LU83090A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102756119B (zh) * 2012-07-14 2014-06-11 马鞍山市博威液压机械制造有限责任公司 一种扒杆伸缩式液压扒渣机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063699A (en) * 1960-12-01 1962-11-13 Robert C Read Mobile apparatus for lancing molten mixtures
US3358985A (en) * 1964-04-17 1967-12-19 Nat Steel Corp Apparatus for conveying fluid toward a region of high temperature
US3342471A (en) * 1964-06-22 1967-09-19 Kaiser Ind Corp Oxygen lance assembly
US3891196A (en) * 1974-01-21 1975-06-24 Thyssen Niederrhein Ag Apparatus for treating a melt
AT336900B (de) * 1974-04-04 1977-05-25 Vmw Ranshofen Berndorf Ag Vorrichtung zur einbringung von gasen in flussigkeiten, insbesondere schmelzen
LU80692A1 (de) * 1978-12-21 1980-07-21 Arbed Verfahren und vorrichtung zum entschwefeln von eisenschmelzen

Also Published As

Publication number Publication date
EP0056944A3 (en) 1982-08-18
LU83090A1 (de) 1982-09-10
DE3260409D1 (en) 1984-08-30
ATE8665T1 (de) 1984-08-15
AU7929282A (en) 1982-08-05
EP0056944A2 (fr) 1982-08-04

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