EP1136157A1 - Procédé et dispositif pour la coulée d'un métal liquide exempt de scories à partir de récipients métallurgiques - Google Patents

Procédé et dispositif pour la coulée d'un métal liquide exempt de scories à partir de récipients métallurgiques Download PDF

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Publication number
EP1136157A1
EP1136157A1 EP01106994A EP01106994A EP1136157A1 EP 1136157 A1 EP1136157 A1 EP 1136157A1 EP 01106994 A EP01106994 A EP 01106994A EP 01106994 A EP01106994 A EP 01106994A EP 1136157 A1 EP1136157 A1 EP 1136157A1
Authority
EP
European Patent Office
Prior art keywords
pouring
melting vessel
slag
melt
molten metal
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Withdrawn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
EP01106994A
Other languages
German (de)
English (en)
Inventor
Jan Dr.Ing. Habil Reichel
Reinhard Dr. Ing. Fuchs
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
Publication of EP1136157A1 publication Critical patent/EP1136157A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/14—Discharging devices, e.g. for slag
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
    • B22D43/001—Retaining slag during pouring molten metal
    • 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

Definitions

  • the invention relates to a method and an apparatus for slag-free Pouring molten metal from metallurgical melting vessels, such as from converters, the molten metal being at the time of pouring overlaying slag melt in the discharge area of the metallurgical Melting vessel is blown away.
  • the oxidic slag discharged in this way with the molten metal brings oxygen with it and leads, for example, to increased consumption of aluminum for the required deoxidation, synthetic slag for the absorption of the oxides and calcium for the modification of the oxidic inclusions.
  • the oxidation product alumina (Al 2 O 3 ) deteriorates the casting properties and the oxygen from the FeO in the slag furthermore makes desulphurization and degassing more difficult.
  • this blowing lance is through the side entry opening of the metallurgical melting vessel and brought up close brought the bottom opening.
  • the blowing lance is at its front end kinked downwards, so that here too the blow jet from above onto the bath surface hits.
  • a disadvantage of the known methods and devices is the high cost Investment and operating costs (wear of blowing lance and rinsing stones, high gas consumption) required to prevent the Slag idling during the discharge of the molten metal from the metallurgical vessel to ensure through a floor opening.
  • the task is procedurally determined by the characteristic features of claim 1 solved in that when the molten metal is discharged by pouring immediately before and during the pouring process with a arranged outside the melting vessel, in its inclination and distance Blower lance changeable to the molten metal outlet edge through the pouring opening a fluid blowing jet with high kinetic pulse energy through the melting vessel blown in as far as possible parallel to the bathroom surface is that the slag melt in the pouring area from the surface of the molten metal pushed back and prevented from escaping from the melting vessel becomes.
  • a device for performing the method is characterized by Features of claim 6, namely through one of the pouring opening of the metallurgical Melting vessel opposite, on a manipulator outside blowing lance arranged in the melting vessel.
  • the blowing lance is always in the desired position during the pouring process Push the slag melt back from the molten metal in the pouring area the blowing lance follows in its orientation with regard to its inclination and their distance to the molten metal trailing edge continuously the pouring movement of the melting vessel.
  • the distance between the outlet nozzle is the blowing lance to the molten metal trailing edge 0.1 to 3 m, preferably 0.2 up to 2 m and the angle of the blowing lance to the horizontal or to the bath surface is -15 ° to + 60 °, preferably -10 ° to + 45 °.
  • This manipulation of the blowing lance is made possible by a manipulator on which the blowing lance is mounted with a holder over a slide. Is controlled the blowing lance through the manipulator via a measuring and control system into which Flow data from the pouring process of the melting vessel flow continuously.
  • an inert gas for example nitrogen or argon, or a suitable liquid used.
  • the cross section of the fluid outlet nozzle arranged at the front end of the blowing lance is rectangular to slit-shaped and horizontal or parallel aligned to the bathroom surface.
  • which of the Slag melt must be kept free and, depending on the fluid used, is included adjust the cross-sectional shape of the outlet nozzle accordingly, however a wide and flat configuration of the emerging gas volume is maintained should be used to retain the entire slag layer in the area around the vessel and edge flows of the slag towards the metal trailing edge to prevent.
  • blowing lance entirely outside of arrange metallurgical melting vessel and also throughout Leaving the pouring process outside of the melting vessel results in Advantage that the blow lance wears due to scaling, for example practically no longer occurs, and also the usual insulating measures are no longer required. This has a significant effect in reducing the investment and operating costs.
  • a melting vessel 1 is shown in a vertical section. At the bottom of the melting space 2 formed from a refractory lining 3 there is the molten metal 5, covered with slag melt 6.
  • the melting vessel 1 is during the pouring process pictured.
  • the melting vessel 1, which can be tilted in the direction of the arrow 8, is present tilted slightly to the left towards the pouring opening 4, so that the molten metal 5 from the pouring opening 4 of the melting vessel 1 via the metal melt outlet edge 10 runs out in a pouring stream 9.
  • the metal melt exit edge 10 is opposite the outside
  • a blow lance 20 is arranged in the melting vessel 1.
  • the blow lance 20 is so aligned that its front end 26 with the preferably rectangular to slot-shaped outlet nozzle (not shown) in the immediate vicinity Located near the metal melt exit edge 10 and from the exit nozzle emerging fluid blowing jet 25 is directed as parallel as possible to the bath surface 7 and broad impact.
  • This measure makes the slag melt 6 largely from the surface of the molten metal 5 in the region of the molten metal pouring edge 10 pushed back, so that the pouring jet 9 almost exclusively consists of molten metal 5. Since the fluid blowing jet 25 is parallel to the Bath surface 7 is aligned, it also runs largely parallel to the surface the molten metal 5, so that undesirable turbulence with the slag melt 6 can be avoided.
  • the blowing lance 20 with its holder 21 on a manipulator 27 arranged.
  • the special design of the bracket 21 enables one Tilting movement of the blowing lance 20 in the direction of arrow 23 and via a slide 22, via which the holder 21 is connected to the manipulator 27, a horizontal Move in the direction of arrow 24.
  • the manipulator 27 Since the horizontal and tilting movements 23, 24 are controlled by the manipulator 27 must be that the blowing lance 20 of the pouring movement of the Melting vessel 1 follows continuously, a corresponding adjustment of the Alignment of the blowing lance 20 to the current position of the melting vessel 1 continuously For this purpose, the movement data of the melting vessel 1 continuously recorded during the pouring process and via a line 16 fed into a measuring and control system 17. By appropriate reshaping are the necessary control signals in this measuring and control system 17 generated for the control of the manipulator 27 and continuously via a Line 18 fed to the manipulator 27.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
EP01106994A 2000-03-24 2001-03-21 Procédé et dispositif pour la coulée d'un métal liquide exempt de scories à partir de récipients métallurgiques Withdrawn EP1136157A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10014712 2000-03-24
DE10014712A DE10014712A1 (de) 2000-03-24 2000-03-24 Verfahren und Vorrichtung zum schlackenfreien Ausgießen von Metallschmelzen aus metallurgischen Schmelzgefäßen

Publications (1)

Publication Number Publication Date
EP1136157A1 true EP1136157A1 (fr) 2001-09-26

Family

ID=7636225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01106994A Withdrawn EP1136157A1 (fr) 2000-03-24 2001-03-21 Procédé et dispositif pour la coulée d'un métal liquide exempt de scories à partir de récipients métallurgiques

Country Status (7)

Country Link
US (1) US6500382B2 (fr)
EP (1) EP1136157A1 (fr)
JP (1) JP2001294931A (fr)
KR (1) KR20010093053A (fr)
BR (1) BR0101146A (fr)
CA (1) CA2341067A1 (fr)
DE (1) DE10014712A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109746429A (zh) * 2019-03-08 2019-05-14 刘全刚 一种智能钢铁炉渣扒渣系统
CN110893458A (zh) * 2018-09-13 2020-03-20 宝山钢铁股份有限公司 一种铁水罐中复合多通道喷枪及其高效吹气赶渣方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101053312B1 (ko) * 2003-11-21 2011-08-01 주식회사 포스코 출강중인 전로의 용융물 유동장치
CN103185460B (zh) * 2011-12-27 2015-11-11 衡阳镭目科技有限责任公司 一种炼钢炉导渣方法及系统
GB2505664A (en) * 2012-09-06 2014-03-12 Jaguar Land Rover Ltd A vehicle cabin temperature control system
CN109405572A (zh) * 2018-12-12 2019-03-01 国家电投集团黄河上游水电开发有限责任公司 一种混合炉抬包倒料控制装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1328803A (en) * 1918-09-19 1920-01-27 Bagley Charles Henry Frost Process for making basic steel in open-hearth steel-furnaces
EP0321861A2 (fr) * 1987-12-22 1989-06-28 MANNESMANN Aktiengesellschaft Récipient basculant métallurgique
WO1994019498A1 (fr) * 1991-10-15 1994-09-01 Ltv Steel Company, Inc. Procede et installation pour le coulage sans scorie de metaux
JPH10176212A (ja) * 1996-12-18 1998-06-30 Sumitomo Metal Ind Ltd 溶鋼の排出時におけるスラグ流出防止方法
DE19916232A1 (de) * 1999-04-10 2000-10-12 Sms Demag Ag Verfahren und Vorrichtung zum Abstechen von Metallschmelzen aus metallurgischen Schmelzgefäßen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2828516A (en) * 1955-02-08 1958-04-01 Koppers Co Inc Ladle for casting metal
GB9304026D0 (en) 1993-02-27 1993-04-14 Schering Agrochemicals Ltd Eyespot method
US5544867A (en) * 1995-03-13 1996-08-13 Neyer; Richard H. Apparatus and process for transporting molten metal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1328803A (en) * 1918-09-19 1920-01-27 Bagley Charles Henry Frost Process for making basic steel in open-hearth steel-furnaces
EP0321861A2 (fr) * 1987-12-22 1989-06-28 MANNESMANN Aktiengesellschaft Récipient basculant métallurgique
WO1994019498A1 (fr) * 1991-10-15 1994-09-01 Ltv Steel Company, Inc. Procede et installation pour le coulage sans scorie de metaux
JPH10176212A (ja) * 1996-12-18 1998-06-30 Sumitomo Metal Ind Ltd 溶鋼の排出時におけるスラグ流出防止方法
DE19916232A1 (de) * 1999-04-10 2000-10-12 Sms Demag Ag Verfahren und Vorrichtung zum Abstechen von Metallschmelzen aus metallurgischen Schmelzgefäßen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 11 30 September 1998 (1998-09-30) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110893458A (zh) * 2018-09-13 2020-03-20 宝山钢铁股份有限公司 一种铁水罐中复合多通道喷枪及其高效吹气赶渣方法
CN110893458B (zh) * 2018-09-13 2021-11-16 宝山钢铁股份有限公司 一种铁水罐中复合多通道喷枪及其高效吹气赶渣方法
CN109746429A (zh) * 2019-03-08 2019-05-14 刘全刚 一种智能钢铁炉渣扒渣系统
CN109746429B (zh) * 2019-03-08 2021-02-23 迁安市九江线材有限责任公司 一种智能钢铁炉渣扒渣系统

Also Published As

Publication number Publication date
US6500382B2 (en) 2002-12-31
KR20010093053A (ko) 2001-10-27
BR0101146A (pt) 2001-10-30
US20010040321A1 (en) 2001-11-15
CA2341067A1 (fr) 2001-09-24
JP2001294931A (ja) 2001-10-26
DE10014712A1 (de) 2001-09-27

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