EP0487494A1 - Installation pour la production de métaux fondus - Google Patents

Installation pour la production de métaux fondus Download PDF

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Publication number
EP0487494A1
EP0487494A1 EP91890282A EP91890282A EP0487494A1 EP 0487494 A1 EP0487494 A1 EP 0487494A1 EP 91890282 A EP91890282 A EP 91890282A EP 91890282 A EP91890282 A EP 91890282A EP 0487494 A1 EP0487494 A1 EP 0487494A1
Authority
EP
European Patent Office
Prior art keywords
melt
vessel
metallurgical vessel
melting
guide channel
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.)
Granted
Application number
EP91890282A
Other languages
German (de)
English (en)
Other versions
EP0487494B1 (fr
Inventor
Wilfried Dipl.-Ing. Dr. Pirklbauer
Alfred Weber
Johannes Dipl.-Ing. Steins
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
Voest Alpine Industrienlagenbau GmbH
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 Voest Alpine Industrienlagenbau GmbH filed Critical Voest Alpine Industrienlagenbau GmbH
Publication of EP0487494A1 publication Critical patent/EP0487494A1/fr
Application granted granted Critical
Publication of EP0487494B1 publication Critical patent/EP0487494B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • C21C5/56—Manufacture of steel by other methods
    • C21C5/567—Manufacture of steel by other methods operating in a continuous way
    • 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
    • F27D3/14—Charging or discharging liquid or molten material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S266/00—Metallurgical apparatus
    • Y10S266/90—Metal melting furnaces, e.g. cupola type

Definitions

  • the invention relates to a plant for the production of liquid metals, in particular steel, with a melting vessel and a metallurgical vessel which receives the melt from the melting vessel and is closed with a lid for the aftertreatment of the melt, the melting vessel being arranged at the bottom of the melting vessel and has tapping opening for the melt located on the periphery of the melting vessel, which is positioned above a pouring opening of the metallurgical vessel, and a method for producing molten metal.
  • a system of this type is known from EP-A - 2 321 443.
  • the melting vessel is designed as a tiltable scrap and / or pig iron melting converter, the oriel of which is arranged at the bottom of the base and is brought into position above a pan.
  • this system melts liquid metal in a continuous process, it is necessary to tilt the converter during the pan change until the tap opening is above the melting level, so that the continuous tapping process and the melting process are interrupted.
  • a system is known from EP-B1-0199 714 with which the sponge iron is melted in an electric furnace and the melt is poured into a pan via a cantilever tapping trough in which the further treatment of the melt, such as dephosphorization and the addition of alloy components, he follows.
  • the melting process and post-treatment are carried out discontinuously.
  • the invention aims to avoid these disadvantages and difficulties and has as its object to create a system of the type described above and a method for operating the system in which the melting process can take place continuously and regardless of the further treatment of the melt, and in which one A targeted mixing effect in the melt bath of the metallurgical vessel is possible through a largely spatter-free melt inlet.
  • This object is achieved in that the pouring opening of the metallurgical vessel downstream of the melting vessel is provided above a fusible channel arranged in the interior of the metallurgical vessel.
  • the melt guide channel is expediently designed to be inclined in the region of contact with the melt entering the metallurgical vessel, the melt flow emerging from the melt vessel being directed at an acute angle against the melt guide channel, so that the melt impinging on the melt guide channel is essentially splash-free from the Melting channel is added.
  • the melt guide channel is curved or kinked in the longitudinal direction, at least in the lower region towards the center of the metallurgical vessel, with the inclination decreasing, as a result of which the kinetic energy of the melt flow of the freshly flowing melt is successfully mixed with the already flowing one bring melt located in the metallurgical vessel, without too intensive vortex formation.
  • a structurally simple design is characterized in that the melt guide channel is integrated in the side wall of the metallurgical vessel, the pouring opening of the metallurgical vessel expediently protruding beyond the circumference of the metallurgical vessel.
  • the fusible channel is advantageously designed as a component projecting over the circumference of the metallurgical vessel, which starts from the pouring opening, so that the furnace interior is not adversely affected by the fusing channel.
  • the tap opening of the melting vessel is advantageously provided on an oriel projecting laterally from the melting vessel and has a cross section that is larger than the cross section of the melt flow emerging from the melting vessel and closes the tap opening close to the pouring opening of the metallurgical vessel.
  • Both the tap opening and the fusible guide channel are expediently lined with a highly wear-resistant material, such as ceramic, so that the wear on these parts is adapted to that of the other parts of the system and no additional change is required.
  • At least one burner directed against the melt guide channel is advantageously provided in the region of the tap opening pouring opening.
  • the system is expediently equipped with an aggregate charging device directed against the melt guide channel, a preferred embodiment being characterized in that the aggregate charging device is arranged as in the lid of the metallurgical vessel and feed pipe directed against the melt guide channel.
  • the tap opening of the A seal is provided in the melting vessel and the pouring opening of the metallurgical vessel, the seal advantageously being designed as a sealing insert which surrounds the tap opening and is seated at the upper end of the melting guide channel and can be used from the outside.
  • a preferred embodiment is characterized in that the sealing insert is horseshoe-shaped and adapted to the upper end of the fusible channel.
  • the seal can be used in a simple manner if the sealing insert has a wedge-shaped cross section tapering towards the interior of the metallurgical vessel, the mutually inclined surfaces of which lie against corresponding mating surfaces of the melting vessel and the upper end of the melting guide channel.
  • the melting vessel is advantageously formed in two parts, etc. It comprises a stationary shaft part and a base part which can be raised and lowered on a mobile carriage and on which the tap opening is provided, with at least one level of burners being expediently provided in the base part and at least one level of burners in the shaft part.
  • the base part is advantageously pot-shaped and the side wall protruding laterally from its base is tapered at least in a partial area in which the burners are provided, whereby the inclination of these partial areas of the side wall is less than the inclination of the side wall adjoining this side wall upwards.
  • An advantageous method for producing molten metal, in particular steel, with a plant according to the invention is characterized in that the melt continuously flows from the melting vessel the metallurgical vessel is conveyed and, after a refining treatment, is withdrawn discontinuously from the metallurgical vessel.
  • the gases which form in the metallurgical vessel are advantageously drawn off from the metallurgical vessel in countercurrent to the melt flow via the tap opening and introduced into the melting vessel, as a result of which the heat content of the extracted gases benefits the charge material introduced into the melting vessel directly and almost without loss.
  • melt flow is heated as it passes through the melt guide channel.
  • FIG. 1 illustrating a section for the production of steel.
  • FIG. 2 shows a section along the line II-II of FIG. 1 and
  • FIG. 3 shows a section along the line III-III of FIG. 1.
  • a stationary supported melting vessel which is composed of two parts, etc. an upper part, forming a shaft part 2 of the melting vessel, which is fixed to a stage 4 in a stationary manner via a hollow frame 3 surrounding this part, and a bottom part 5, which is mounted on a carriage 6 which can be moved on the stage 4 rests.
  • This base part 5 is supported in a height-adjustable manner on the carriage 6 by means of a lifting device 7 and can be moved against the shaft part 2 by means of the lifting device.
  • the connection between the base part 5 and the shaft part 2 takes place via flanges 8, 9 provided on these parts on the abutting end faces, which are screwed together.
  • Both the bottom 5 and the shaft part 2 each have a metal outer jacket 10 and are provided on the inside with a refractory lining 11.
  • burners 12 projecting through the wall or devices supplying oxygen-containing gas are preferably provided in two or more levels, the supply lines of which are led through the hollow frame 3.
  • a charging device is arranged at the upper end of the shaft part, not shown.
  • Burners 13 are also provided in the base part 5 in at least one plane.
  • the bottom part 5 of the shaft furnace 1 is pot-shaped, the level of the burner 13 being in the side wall 15 of the bottom part 5 rising from the bottom 14.
  • This side wall 15 is conical at the level of the burner 13, and tapers upwards.
  • the inclination of the side wall 15 at the level of the burners 13 is less than that of the wall of the melting vessel 1 adjoining this side wall 15, which is formed by the shaft part 2 in the exemplary embodiment shown.
  • a cavity or free space 16 is formed between the side wall 15 of the base part 5 having the burners 13 and the insert 17, which prevents overheating of the burners 13 or the refractory lining 11 surrounding the burners.
  • the side wall 15 could also be stepped to form the free space 16.
  • the base part 5 has an oriel 18 protruding laterally beyond the side wall 15, into which a pouring channel 19, which starts from the base 14 and is arranged in a slightly falling and radially directed manner, opens out.
  • This pouring channel merges into a steeply downwardly directed channel part 20, at the end of which is the tap opening 21.
  • the refractory lining 11 of the shaft furnace 1 continues into the oriel 18.
  • the pouring channel is lined with a highly wear-resistant material 22, such as ceramic.
  • a metallurgical vessel 23 designed as an electric furnace for refining the melt 24 flowing into the metallurgical vessel 23 from the melting vessel 1 via the tap opening 21 is arranged to the side of the melting vessel 1 and at a level below it.
  • This vessel 23 has a curved base part 25, which is rigid via claws 26 or a frame on stands 27 arranged fixedly on the foundation, i.e. immobile, supported.
  • This bottom part 25 is formed by a metal outer jacket 28 and a refractory lining 29, and it has tapping for slag and steel melt, not shown, and an emergency tapping at the lowest point of the vessel.
  • annular side wall jacket 30 which is formed from preferably water-cooled panels and is tightly closed by a cover 31 formed from water-cooled pipes. Electrodes shown schematically protrude through openings in the lid 31 into the interior of the metallurgical vessel 23.
  • the arrangement of the metallurgical vessel 23 to the melting vessel 1 is such that the side wall jacket 30 of the metallurgical vessel 23 comes to lie approximately vertically below the tap opening 21 of the melting vessel 1.
  • the metallurgical vessel 23 is provided with an outwardly inclined melting channel 33 which forms a pouring opening 32 and which is covered with a layer of highly wear-resistant material 34, such as ceramic, which rests on a lining of refractory material 35, is lined.
  • the lining 34 ends above the maximum height of the melt pool level.
  • the arrangement of the melt guide channel 33 is such that the melt flow emerging from the melt vessel 1, which is illustrated by the arrow 36, strikes the melt guide channel 33 at an acute angle, thereby ensuring an essentially splash-free entry into the metallurgical vessel 23.
  • the fusible channel 33 is curved or slightly bent at the lower end 37, the inclination of the fusible channel becoming flatter towards its end. This makes it possible, using the kinetic energy of the melt flow 36, to achieve a targeted deflection of the melt flow and thus a thorough mixing of the newly flowing melt with the melt bath 24 located in the metallurgical vessel, as is indicated by the arrows 38.
  • a seal 39 is fitted from the outside, which has a wedge-shaped cross section tapering towards the inside of the metallurgical vessel 23 and with its mutually inclined surfaces on corresponding counter surfaces of the oriel and the upper end the melt guide channel is in contact.
  • burners 40 are provided which are directed against the fusible channel 33 and serve to heat the same and achieve temperature stability, so that no deposits can form in the fusible channel 33. Furthermore, in this area at least one feed pipe 41 is provided for adding additives, which projects through the cover 31 from above and is likewise directed against the melt guide channel 33.
  • the metallurgical vessel 23 can also be equipped with further natural gas / O2 burners, floor flushing elements and openings for measuring lances or other additives.
  • Gases produced in the metallurgical vessel 23 preferably pass exclusively through the tap opening 21 and the pouring channel 19, 20, the cross sections of which are substantially larger than the cross section of the from the Melting vessel 36 emerging melt flow, directly into the melting vessel 1, flow through the insert 17 of the same, releasing its heat content and are drawn off at the upper end of the melting vessel via a gas discharge device, not shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Blast Furnaces (AREA)
  • Manufacture Of Iron (AREA)
EP91890282A 1990-11-19 1991-11-15 Installation pour la production de métaux fondus Expired - Lifetime EP0487494B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0233290A AT395656B (de) 1990-11-19 1990-11-19 Anlage zur herstellung von fluessigen metallen
AT2332/90 1990-11-19

Publications (2)

Publication Number Publication Date
EP0487494A1 true EP0487494A1 (fr) 1992-05-27
EP0487494B1 EP0487494B1 (fr) 1995-04-19

Family

ID=3532390

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91890282A Expired - Lifetime EP0487494B1 (fr) 1990-11-19 1991-11-15 Installation pour la production de métaux fondus

Country Status (10)

Country Link
US (1) US5238484A (fr)
EP (1) EP0487494B1 (fr)
JP (1) JPH0518670A (fr)
KR (1) KR920009993A (fr)
AT (1) AT395656B (fr)
AU (1) AU8780591A (fr)
CA (1) CA2055737A1 (fr)
DE (1) DE59105255D1 (fr)
ES (1) ES2074695T3 (fr)
ZA (1) ZA919120B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995016796A1 (fr) * 1993-12-15 1995-06-22 Paul Wurth S.A. Dispositif de chargement pour alimenter en metaliquide un four electrique
WO1999000522A1 (fr) * 1997-06-27 1999-01-07 Voest-Alpine Industrieanlagenbau Gmbh Installation et dispositif pour la production de metal en fusion
EP1226283A1 (fr) * 1999-09-14 2002-07-31 Danieli Technology, Inc. Appareil de prefusion a haute temperature

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI934550A0 (fi) * 1993-10-14 1993-10-14 Outokumpu Research Oy Foerfarande och ugnkonstruktion foer anvaendning i processer i vilka laettflyktiga metaller produceras
US5439503A (en) * 1994-01-31 1995-08-08 Burr; Lynn E. Process for treatment of volcanic igneous rocks to recover gold, silver and platinum
DE4406260A1 (de) * 1994-02-25 1995-08-31 Fuchs Technology Ag Verfahren zum Betrieb eines Einschmelzaggregates mit zwei nebeneinander angeordneten Öfen und Einschmelzaggregat
US5690888A (en) * 1995-06-07 1997-11-25 Molten Metal Technologies, Inc. Apparatus and method for tapping a reactor containing a molten fluid
DE19634348A1 (de) * 1996-08-23 1998-02-26 Arcmet Tech Gmbh Einschmelzaggregat mit einem Lichtbogenofen
US5936995A (en) * 1997-11-14 1999-08-10 Fuchs Systems, Inc. Electric arc furnace with scrap diverting panel and associated methods
KR100423686B1 (ko) * 1998-01-30 2004-03-18 가부시키가이샤 히타치세이사쿠쇼 고체 물질 용융 장치
US6306337B1 (en) * 2000-02-22 2001-10-23 General Kinematics Corporation Nosepiece for directing a charge into a furnace
US6932003B2 (en) * 2000-08-18 2005-08-23 John Bruce Smith Mobile furnace and method of facilitating removal of material from workpieces
US6474249B1 (en) 2000-08-18 2002-11-05 John Bruce Smith Mobile furnace and method of facilitating removal of material from workpieces
CA2341772C (fr) * 2001-03-22 2009-09-29 Hatch Associates Ltd. Transfert de matieres d'alimentation chaude d'un equipement de pretraitement a un four de fusion electrique
DE102004046728A1 (de) * 2004-09-25 2006-04-06 Sms Demag Ag Verfahren und Einrichtung zum Herstellen von flüssigem Stahl
KR100911652B1 (ko) 2007-02-13 2009-08-10 삼성전자주식회사 집적 회로, 상기 집적 회로를 포함하는 소스 드라이버, 및 상기 소스 드라이버를 포함하는 디스플레이 장치
WO2014003123A1 (fr) * 2012-06-27 2014-01-03 新日鐵住金株式会社 Procédé de réduction des scories d'acier
NL2023109B1 (en) * 2019-05-10 2020-11-30 African Rainbow Minerals Ltd Process for the smelting of a metalliferous feedstock material

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2450495B1 (de) * 1974-10-24 1975-04-30 Kloeckner Werke Ag Einrichtung zur Stahlerzeugung
EP0321443A2 (fr) * 1987-12-17 1989-06-21 VOEST-ALPINE STAHL Donawitz GmbH Procédé et installation pour la fusion continue de déchets
EP0199714B1 (fr) * 1985-04-26 1989-10-04 VOEST-ALPINE INDUSTRIEANLAGENBAU GESELLSCHAFT m.b.H. Procédé pour la production de l'acier à partir de l'éponge de fer et installation pour la mise en oeuvre de ce procédé

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083715A (en) * 1976-05-25 1978-04-11 Klockner-Werke Ag Smelting plant and method
AT384669B (de) * 1986-03-17 1987-12-28 Voest Alpine Ag Anlage zur herstellung von stahl aus schrott
GB8719543D0 (en) * 1987-08-19 1987-09-23 Materials & Methods Ltd Metal treatment
DE3839096A1 (de) * 1988-11-18 1990-05-23 Fuchs Systemtechnik Gmbh Verfahren zum betrieb eines einschmelzaggregates und einschmelzaggregat fuer dieses verfahren

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2450495B1 (de) * 1974-10-24 1975-04-30 Kloeckner Werke Ag Einrichtung zur Stahlerzeugung
EP0199714B1 (fr) * 1985-04-26 1989-10-04 VOEST-ALPINE INDUSTRIEANLAGENBAU GESELLSCHAFT m.b.H. Procédé pour la production de l'acier à partir de l'éponge de fer et installation pour la mise en oeuvre de ce procédé
EP0321443A2 (fr) * 1987-12-17 1989-06-21 VOEST-ALPINE STAHL Donawitz GmbH Procédé et installation pour la fusion continue de déchets

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995016796A1 (fr) * 1993-12-15 1995-06-22 Paul Wurth S.A. Dispositif de chargement pour alimenter en metaliquide un four electrique
AU677478B2 (en) * 1993-12-15 1997-04-24 Paul Wurth S.A. Loading device for feeding liquid metal into an electric furnace
WO1999000522A1 (fr) * 1997-06-27 1999-01-07 Voest-Alpine Industrieanlagenbau Gmbh Installation et dispositif pour la production de metal en fusion
US6264883B1 (en) 1997-06-27 2001-07-24 Voest-Alpine Industrieanlagenbau Gmbh Plant for the production of metal melts
CN1082548C (zh) * 1997-06-27 2002-04-10 奥地利钢铁联合企业阿尔帕工业设备制造公司 用于生产金属熔体的设备及方法
EP1226283A1 (fr) * 1999-09-14 2002-07-31 Danieli Technology, Inc. Appareil de prefusion a haute temperature
EP1226283A4 (fr) * 1999-09-14 2003-07-23 Danieli Technology Inc Appareil de prefusion a haute temperature

Also Published As

Publication number Publication date
AT395656B (de) 1993-02-25
KR920009993A (ko) 1992-06-26
AU8780591A (en) 1992-05-21
CA2055737A1 (fr) 1992-05-20
ES2074695T3 (es) 1995-09-16
ZA919120B (en) 1992-08-26
JPH0518670A (ja) 1993-01-26
ATA233290A (de) 1992-06-15
DE59105255D1 (de) 1995-06-08
EP0487494B1 (fr) 1995-04-19
US5238484A (en) 1993-08-24

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