EP0974801A1 - Procédé et dispositif pour laisser couler exempt de scories - Google Patents

Procédé et dispositif pour laisser couler exempt de scories Download PDF

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Publication number
EP0974801A1
EP0974801A1 EP99250213A EP99250213A EP0974801A1 EP 0974801 A1 EP0974801 A1 EP 0974801A1 EP 99250213 A EP99250213 A EP 99250213A EP 99250213 A EP99250213 A EP 99250213A EP 0974801 A1 EP0974801 A1 EP 0974801A1
Authority
EP
European Patent Office
Prior art keywords
tube
opening
melt
tap opening
tap
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.)
Withdrawn
Application number
EP99250213A
Other languages
German (de)
English (en)
Inventor
Reinhard Fuchs
Flemming Thomsen
Jan Tybjerg Jensen
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
Mannesmann AG
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 Mannesmann AG, SMS Demag AG filed Critical Mannesmann AG
Publication of EP0974801A1 publication Critical patent/EP0974801A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1545—Equipment for removing or retaining slag
    • F27D3/159—Equipment for removing or retaining slag for retaining slag during the pouring of the metal or retaining metal during the pouring of the slag

Definitions

  • the invention relates to a method for slag-free tapping in one Metallic melt located in the furnace, in particular steel in one Arc furnace, which is a closable in the bottom of the furnace vessel Has tap opening, which is closed from the outside after tapping and with Filling material is filled and a corresponding device for this.
  • DE 34 37 810 discloses a closure device for a tap hole in the floor a metallurgical vessel known about the in the lowered locked position Tapping opening pourable filling material can be fed. In a preferred one In the raised release position, the tube is completely out of the design Melt pulled out.
  • the disadvantage here is not only a high energy consumption on the required cooling medium, it is also through from the pipe mouth escaping gas affects the melt bath in an undetermined way.
  • the invention has set itself the goal of a method and a corresponding To create device in which with simple and constructive means during parting off a completely slag-free parting from an electric arc furnace is guaranteed.
  • the invention achieves this aim by the method features of claim 1 and the device features of claim 8.
  • a pipe 32 the lower part at the head end, is used as a hollow plug 31 is formed and closed in the mouth area 38, at least until immersed in the melt M below the slag layer S. That way prevents even the smallest parts of slag S into the interior of the Tube 32 arrive.
  • the head end face of the Pipe 32 led to the edge of the entry area of the tap opening 13. Then the furnace, especially by tilting the furnace vessel 11, so far emptied until the tap opening 13 is free of melt M. Because the head the end face of the tube 32 at the edge of the entry region of the tap opening 13 is present, no slag can enter the tap opening 13 at this time reach.
  • the tap opening 13 is empty, it is usually covered with an outside Closure member 15 closed. At this point, the head will be provided locking means 34 of the tube 32 is opened and the tube 32 is the Filling material F introduced into the tap opening 13.
  • the size of the The gap is chosen so that there is hardly any melt M and no slag S over the gap enters the tap opening 13.
  • the head-side pipe mouth 38 is in one during the tapping Distance to the entrance of the tap opening 13 held that a swirl in the Area of the tap opening 13 is at least hindered.
  • critical height i.e. the height of the melting bath S at which a Vortex occurs, to an extent that slag with through the tap hole 13 is torn, shaped elements 51 are provided, which are on the outside of the tube 32 are attached.
  • this is Tube 32 connected at the bottom to a gas supply system 41.
  • the gas is kept at a pressure so strong that none or only a small amount of melt M penetrate into the interior of the tube 32 can.
  • the gas pressure is the effective bath height of the melt M in Furnace vessel 11 adapted.
  • refractory mass F can in turn be used to ensure safe to convey the filling material F into the tap opening.
  • a displaceable piston 35 is provided, which after placing the tube 32 on the edge 14 of the tap opening 13 so far is pulled out of the tube, if necessary by one attached to the side Material feed device, the filling material F can be introduced.
  • a plate 36 at the head end of the tube 32 to provide, which consists of a material which is made by the liquid metal can be melted in a predetermined time or means 22 are provided, by which the plate 36 is destroyed at the desired time.
  • These funds can be pneumatic and cause the plate 36 to burst by a pressure pulse, or a needle 23 is provided, which in one stroke hits the plate 36 destroyed.
  • the hollow plug With a fixed oven or with a tilting oven in the area the tap hole is still melt, the hollow plug is as far as the Edge of the inlet opening of the racking that led to the amount of escaping Melt is reduced to such an extent that the tap opening is no longer is completely filled with melt.
  • filler material is about Pipe in the remaining cavity of the tap opening supplied in a Amount that at least almost prevents the melt from flowing away.
  • the tapping opening of closed outside is about Pipe in the remaining cavity of the tap opening supplied in a Amount that at least almost prevents the melt from flowing away.
  • the tube 32 is connected to a holding device 61 attached, which has a ball joint 62, via which the pipe mouth 38 in the Edge 14 of the tap opening 13 can be centered. In this way, the desired gap between the head end of the tube 32 and the tap opening 13 produce. In addition, no or only an extremely small amount is applied to the tube 32 Coercion exercised.
  • FIG. 1 shows a part of the furnace vessel 11 with the vessel bottom 12, in which there is a tap opening 13 which is closed by a closing element 21 The outside of the vessel can be closed.
  • the mouth region 38 of the hollow plug 31 is at a distance a from the edge 14 the tap opening 13 spaced.
  • Figures 2.1 to 2.5 show the different phases of the process for slag-free tapping of a melt M located in an oven vessel 11 that floats up the slag S.
  • the furnace vessel 11 each has the bottom of the vessel 12, in which the tap opening 13 is provided, which is provided by a closing element 21 is closable.
  • the individual figures are different Closure elements 21 are provided in the mouth area 38 of the hollow plug 31.
  • the hollow plug 31 equipped with shaped elements 51 is shown by the Melt S has been performed, so deep that the mouth region 38th is below the melt level.
  • the mouth area 38 is through a Locking means 34 closed.
  • the level of the melt M has meanwhile dropped in FIG. 2.3.
  • the Tap opening 30 begins to form a vortex W, whereby the vortex formation by the shaped elements 51 provided on the hollow plug 31 is hindered.
  • the pipe mouth area 38 is through a piston 35 locked.
  • Filling material F has already been introduced above the piston, which immediately after the opening of the pipe opening of the tap opening 13 can be fed.
  • the pipe mouth area 38 of the hollow plug 31 is except for one Distance a has been brought up to the edge 14 of the tap opening 13.
  • the distance a is chosen so that the outflow of the melt M is reduced to a minimum wrid, so that the tap opening 13 is no longer completely filled with melt.
  • the mouth region 38 is closed by a plate 36, which is closed by a needle 37 is destructible. As soon as the plate 38 releases the interior of the hollow plug 31, filling material can be conveyed to the tap opening 13.
  • FIG. 2.5 shows the situation in which the edge 14 of the tap opening 13 is free of melt or slag.
  • the closing element 21 has the Tap opening 13 is closed from the outside and the hollow plug 31 Filling material introduced into the tap opening 13.
  • FIG. 3 shows, in addition to FIG. 1, a holding device 61 which has a Support column 64 is connected, which the hollow plug to or from the Tap opening 13 could move away.
  • the support column hydraulically operated and connected to a pump 65 for this purpose.
  • the holding device 61 is connected to the hollow plugs 31 via a tube 32.
  • a tube 32 On Part of the tube 32 is designed as a ball joint 62. Through this ball joint 62 the mouth region 38 of the hollow plug 31 to the tap opening 13 cannot just center exactly, but also set the distance a as evenly as possible.
  • Power transmission element 63 is provided, which can be driven by a motor 66, so that the hollow plug 31 can be set in rotation and with respect to its position in its horizontal position can be predetermined.
  • a conveyor 33 for introducing the Filling material F as well as a gas supply system 41 that can be separated via a valve 42 intended.
  • the gas supply system 41 and the conveyor 33 are as pneumatic conveying can be configured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
EP99250213A 1998-07-24 1999-06-28 Procédé et dispositif pour laisser couler exempt de scories Withdrawn EP0974801A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19835087 1998-07-24
DE1998135087 DE19835087A1 (de) 1998-07-24 1998-07-24 Verfahren und Einrichtung zum schlackefreien Abstechen

Publications (1)

Publication Number Publication Date
EP0974801A1 true EP0974801A1 (fr) 2000-01-26

Family

ID=7876350

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99250213A Withdrawn EP0974801A1 (fr) 1998-07-24 1999-06-28 Procédé et dispositif pour laisser couler exempt de scories

Country Status (2)

Country Link
EP (1) EP0974801A1 (fr)
DE (1) DE19835087A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10062742A1 (de) * 2000-12-15 2002-06-20 Fischer Georg Automobilguss Vorrichtung zum Verschliessen eines Giessgefässes
EP1239248A2 (fr) * 2001-03-09 2002-09-11 SMS Demag AG Méthode et dispositif pour changer un tiroir linéaire d'un récipient métallurgique, notamment d'un four de fusion électrique
EP1457749A1 (fr) * 2003-03-12 2004-09-15 Botta Engineering S.r.l. Systéme automatique d'alimentation de métal liquide
WO2011009579A1 (fr) 2009-07-20 2011-01-27 Fuchs Technology Holding Ag Dispositif d’étanchéification et de remplissage d’un four métallurgique, four métallurgique et procédé de percée d’un four métallurgique
DE102009033934B3 (de) * 2009-07-20 2011-02-03 Fuchs Technology Holding Ag Abdicht- und Verfüllvorrichtung für einen metallurgischen Ofen, metallurgischer Ofen und Verfahren zum Abstechen eines metallurgischen Ofens
CN114799140A (zh) * 2022-04-18 2022-07-29 马鞍山钢铁股份有限公司 一种中间包抑渣控制装置及其制备和抑渣控制方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005024924B8 (de) * 2005-05-23 2007-10-25 Strikowestofen Gmbh Schmelz- oder Warmhalteofen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4520861A (en) * 1983-11-18 1985-06-04 Republic Steel Corporation Method and apparatus for alloying continuously cast steel products
DE3437810A1 (de) * 1984-10-16 1986-04-24 Kortec AG, Zug Verschlusseinrichtung fuer eine abstichoeffnung im boden eines metallurgischen gefaesses
JPS6372475A (ja) * 1986-09-16 1988-04-02 Nkk Corp 溶湯流出口を備えた溶湯容器
DE19543058A1 (de) * 1995-11-10 1998-07-16 Mannesmann Ag Verfahren und Vorrichtung zum Verschließen einer Abstichöffnung
FR2765316A1 (fr) * 1997-06-30 1998-12-31 Vesuvius France Sa Four electrique a trou de coulee excentre et procede d'elaboration d'acier dans ce four

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2229384A (en) * 1989-03-13 1990-09-26 Inductotherm Corp Molten metal holding and pouring box and pouring nozzle
GB8929193D0 (en) * 1989-12-27 1990-02-28 Brown Charles D Ceramic fibre joint & applicator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4520861A (en) * 1983-11-18 1985-06-04 Republic Steel Corporation Method and apparatus for alloying continuously cast steel products
DE3437810A1 (de) * 1984-10-16 1986-04-24 Kortec AG, Zug Verschlusseinrichtung fuer eine abstichoeffnung im boden eines metallurgischen gefaesses
JPS6372475A (ja) * 1986-09-16 1988-04-02 Nkk Corp 溶湯流出口を備えた溶湯容器
DE19543058A1 (de) * 1995-11-10 1998-07-16 Mannesmann Ag Verfahren und Vorrichtung zum Verschließen einer Abstichöffnung
FR2765316A1 (fr) * 1997-06-30 1998-12-31 Vesuvius France Sa Four electrique a trou de coulee excentre et procede d'elaboration d'acier dans ce four

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 294 (M - 730) 11 August 1988 (1988-08-11) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10062742A1 (de) * 2000-12-15 2002-06-20 Fischer Georg Automobilguss Vorrichtung zum Verschliessen eines Giessgefässes
EP1239248A2 (fr) * 2001-03-09 2002-09-11 SMS Demag AG Méthode et dispositif pour changer un tiroir linéaire d'un récipient métallurgique, notamment d'un four de fusion électrique
EP1239248A3 (fr) * 2001-03-09 2002-12-18 SMS Demag AG Méthode et dispositif pour changer un tiroir linéaire d'un récipient métallurgique, notamment d'un four de fusion électrique
EP1457749A1 (fr) * 2003-03-12 2004-09-15 Botta Engineering S.r.l. Systéme automatique d'alimentation de métal liquide
WO2011009579A1 (fr) 2009-07-20 2011-01-27 Fuchs Technology Holding Ag Dispositif d’étanchéification et de remplissage d’un four métallurgique, four métallurgique et procédé de percée d’un four métallurgique
DE102009033934B3 (de) * 2009-07-20 2011-02-03 Fuchs Technology Holding Ag Abdicht- und Verfüllvorrichtung für einen metallurgischen Ofen, metallurgischer Ofen und Verfahren zum Abstechen eines metallurgischen Ofens
CN114799140A (zh) * 2022-04-18 2022-07-29 马鞍山钢铁股份有限公司 一种中间包抑渣控制装置及其制备和抑渣控制方法

Also Published As

Publication number Publication date
DE19835087A1 (de) 2000-01-27

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