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US20110140321A1 - Tuyer device for introducing gas media under a liquid metal level - Google Patents

Tuyer device for introducing gas media under a liquid metal level Download PDF

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Publication number
US20110140321A1
US20110140321A1 US12/597,537 US59753708A US2011140321A1 US 20110140321 A1 US20110140321 A1 US 20110140321A1 US 59753708 A US59753708 A US 59753708A US 2011140321 A1 US2011140321 A1 US 2011140321A1
Authority
US
United States
Prior art keywords
section
liquid metal
channels
pipes
tuyer
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.)
Abandoned
Application number
US12/597,537
Other languages
English (en)
Inventor
Edgar Schumacher
Viktor Nikolaevich Hloponin
Renata Franzky
Ewald Antonovich Schumacher
Sagadat Schumacher
Andrei Vasilyevich Yudin
Alexander Kasymovich Farmanov
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.)
Techcom GmbH
Original Assignee
Individual
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 Individual filed Critical Individual
Assigned to TECHCOM GMBH reassignment TECHCOM GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FARMANOV, ALEXANDER KASYMOVICH, FRANZKY, RENATA, HLOPONIN, VIKTOR NIKOLAEVICH, SCHUMACHER, EDGAR, SCHUMACHER, EWALD ANTONOVICH, YUDIN, ANDREI VASILYEVICH
Publication of US20110140321A1 publication Critical patent/US20110140321A1/en
Abandoned 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
    • C21C5/48—Bottoms or tuyéres of converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases
    • B22D1/005—Injection assemblies therefor
    • 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
    • F27D3/16—Introducing a fluid jet or current into the charge
    • 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
    • C21C2250/00—Specific additives; Means for adding material different from burners or lances
    • C21C2250/08—Porous plug
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]

Definitions

  • the invention relates to producing and processing liquid metal (steel in ferrous metallurgy) in metallurgy.
  • Argon, nitrogen and oxygen combined with CH 4 and nitrogen additives are used as gases. This operation allows accelerating homogenization of liquid metal and processes used during metal refining.
  • a blower is used to supply gas into the steel-making unit including a tuyer device as the base that in any way comprises metal pipes that gas supply (working) channels are arranged into.
  • a tuyer device with a blowing element for side supplying oxygen in molten metal is widely used.
  • a central working channel for oxygen supply (including with nitrogen added) encompasses an annular working channel for supplying, for example, CH 4 with nitrogen added.
  • a key problem for implementation of side supplying oxygen under a liquid metal level is the requirement to provide for continuous gas supply to liquid steel. Any interruption in gas supply results in liquid steel to be supplied into working channels with the possibility for steel breakthrough beyond the steel containing unit.
  • a blowing element of a steel-making unit is known, wherein the specified problem is solved.
  • the blowing element comprises a number of straight pipe sections connected between each other, that gas supply channels are arranged into, while the sections of connected pipes comprise a section with capillary and gas supply channels (refer to, for example, KNABL “Annual Refractory Symposium” dated Jul. 1-5, 2002).
  • a material disadvantage of the known blowing element is its inapplicability for oxygen supply under a metal level.
  • a tuyer device for side supplying oxygen under a liquid metal level comprises a well block from a refractory material with a built-in shell coaxial metal pipes arranged inside the shell having on the side of a device introducible into the liquid metal, at least one central working channel and at least one annular working channel; the channels are separately connected to ducts for supplying gas media to liquid metal (refer to, for example, European Patent No. EP 0 565 690 B1).
  • the known tuyer device is the closest to the claimed one according to its essential features; therefore it is taken as a prototype.
  • a material disadvantage of the known tuyer device is that it does not comprise, in fact, protection from breakthrough of liquid metal through working channels.
  • the claimed tuyer device is free from the specified disadvantage.
  • the problem of protection from breakthrough of liquid metal is solved through working channels therein.
  • the tuyer device for introducing gas media under a liquid metal level comprising a well block from a refractory material with a built-in shell, coaxial metal pipes arranged inside the shell, having on the side of a device introducible into the liquid metal, at least one central working channel and at least one annular working channel, the working channels are separately connected to ducts for supplying gas media to the metal, according to the claim coaxial metal pipes along their length consist of two interconnected sections of different diameters, the first section has the smaller diameter and designed for the specified supplying gas media into liquid metal, the second section having the larger diameter, being connected to the ducts for separately supplying gas media to the working channels of the first section, being provided with an extra pipe and having the annular channels only and the internal pipe of the section being closed on both ends and filled with a refractory material, the gaps of annular working channels of this tuyer section are in the form of capillaries for the liquid metal.
  • annular working channels of the second section of the shell in transition areas to working channels of the first section of the shell are outlined with straight taper surfaces with smooth transition at end points, wherein at least in the transition area the end part of the internal pipe passes into the taper rod located coaxially in the central working channel of the first section.
  • annular channels of the second section of the coaxial metal pipes in transition areas into working channels of the first section have spherical surface with smooth transition at transition end points, wherein at least in the transition area the end part of the internal pipe passes into a taper rod, located coaxially in the central working channel of the first section.
  • the annular working channels in the second section of the shell are calibrated being located between pipes of a calibration spring, which initial diameter is lower that outside diameter of the pipe that this spring is placed on.
  • the internal pipe of the second section of the coaxial metal pipes has calibration ribs along the outside diameter, including the transition area of the second section of the coaxial pipes into the first section.
  • the pipes in the second section of the shell have a circumferential weld.
  • FIG. 1 longitudinal section of the tuyer device is shown
  • FIG. 2 longitudinal section of a tuyer device embodiment
  • FIG. 3 transverse section A-A in FIG. 1 ,
  • the tuyer device comprises coaxial metal pipes 1 and 2 on the side designed introducible into liquid metal. Outside diameter of pipes 2 is designated d in FIGS. 1 and 2 . It is the first section of the coaxial metal pipes. In the second section these metal pipes have the larger in comparison with d diameter equal to D for external pipe 2 , and central pipe 3 is located between pipes 1 and 2 closed on both ends.
  • Pipes are embedded into shell 6 that in its turn is arranged in well block 7 .
  • Central pipe 3 is filled with refractory material 8 .
  • central pipes 3 at least on the side of the central working channel 4 passes into taper rod 9 that passes into channel 4 being arranged coaxial with the channel ( FIGS. 1 and 2 ).
  • Central pipe 3 can have ends in the form of taper rod 9 on the both sides ( FIG. 2 ).
  • annular working channels 10 and 11 interconnected respectively 10 with 5 and 11 with 4 working channels.
  • Annular working channels 10 and 11 are separately connected to ducts for supplying the respective gas into channel 10 along pipe 12 and into channel 11 along pipe 13 (ducts are shown in FIGS. 1 and 2 by arrows).
  • Working channels 4 , 5 , 10 and 11 are calibrated and for annular channels 5 , 10 and 11 either different design ribs 14 or calibration spring 15 are used, wherein ribs 14 and spring 15 encompass also transition areas 16 ( FIG. 1) and 17 ( FIG. 2 ) of the second section of the coaxial metal pipes to their first section.
  • spring 15 this position is provided by springs with internal diameter is a bit lower than the outside diameter of the relative pipe.
  • annular channels 10 and 11 are equal or a bit more than cross-section of channels which they are separately connected with, i.e. channel 10 with channel 5 and channel 11 with channel 4 .
  • the size of annular gaps of channels 10 and 11 is capillary for liquid metal under which level gas media is considered to be supplied, wherein the capillary is meant to be a narrow gap that prevent liquid metal from passing through it.
  • capillaries are to be gaps of 1.5 . . . 2 mm and less.
  • the metal pipes in the second section of the unit have circumferential welds 18 .
  • the tuyer device for introducing gas media under a liquid metal level operates as follows.
  • Well block 7 with shell 6 and steel pipes 1 , 2 and 3 as shown in FIG. 1 or 2 are to be mounted in unit lining that is used for production and processing liquid metal.
  • oxygen is supplied to liquid metal in gaseous condition, wherein is supplied under a metal level (for example, in steel melting unit: electric arc or open-hearth furnace).
  • Gaseous oxygen is supplied by pipe 13 .
  • Oxygen by annular working channel 11 is supplied to central channel 4 and then to liquid metal. Due to calibration ribs 14 available oxygen is uniformly supplied into channel 4 . If calibration spring 15 is used, oxygen flow is twisted and being twisted is supplied to liquid metal that results in improving of interaction effect between metal and oxygen.
  • Gas CH 4 including with nitrogen added, is supplied by pipe 12 , then by the annular working channel 10 to annular channel 5 and to liquid metal, encompassing liquid oxygen flow supplied to metal by central channel 4 . Therefore accelerated burning of the shell 6 , well block 7 and furnace lining is prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
US12/597,537 2007-04-26 2008-04-24 Tuyer device for introducing gas media under a liquid metal level Abandoned US20110140321A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
RU2007115836/02A RU2374328C2 (ru) 2007-04-26 2007-04-26 Фурменное устройство для введения газовых сред под уровень жидкого металла
RU2007115836 2007-04-26
PCT/RU2008/000264 WO2008153440A2 (fr) 2007-04-26 2008-04-24 Dispositif à tuyère destiné à l'injection de milieux gazeux sous un niveau de métal en fusion

Publications (1)

Publication Number Publication Date
US20110140321A1 true US20110140321A1 (en) 2011-06-16

Family

ID=40130338

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/597,537 Abandoned US20110140321A1 (en) 2007-04-26 2008-04-24 Tuyer device for introducing gas media under a liquid metal level

Country Status (7)

Country Link
US (1) US20110140321A1 (fr)
EP (1) EP2154256A4 (fr)
CN (1) CN101715491A (fr)
BR (1) BRPI0810678A2 (fr)
EA (1) EA015797B1 (fr)
RU (1) RU2374328C2 (fr)
WO (1) WO2008153440A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010015098B4 (de) 2010-04-15 2014-05-15 Techcom Gmbh Vorrichtung zur Einleitung von Gasen in heisse flüssige Medien
WO2011127877A1 (fr) 2010-04-15 2011-10-20 Techcom Gmbh Dispositif pour l'introduction de gaz dans des milieux liquides chauds

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1645643A1 (fr) * 2003-06-16 2006-04-12 Techcom Import-Export Gmbh Dispositif de tuyere servant a l'introduction de milieux gazeux sous une couche de metal liquide

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ206264A (en) * 1982-11-23 1986-02-21 Injectall Ltd Apparatus for introducing substance into metal melts
WO1984002174A1 (fr) * 1982-12-01 1984-06-07 Steweag Procede et installation de rechauffage de gaz de combustion desulfures
DE3809828A1 (de) * 1988-03-23 1989-10-12 Radex Heraklith Spuelstein
DE4136552A1 (de) 1991-11-06 1993-05-13 Kortec Ag Dueseneinrichtung zum einleiten von medien in eine schmelze und verfahren zum betrieb dieser dueseneinrichtung
US5249778A (en) * 1992-04-14 1993-10-05 Dolomitwerke Gmbh Gas stir plug device with visual wear indicator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1645643A1 (fr) * 2003-06-16 2006-04-12 Techcom Import-Export Gmbh Dispositif de tuyere servant a l'introduction de milieux gazeux sous une couche de metal liquide
US7534390B2 (en) * 2003-06-16 2009-05-19 Techcom Import Export Gmbh Tuyere device for introducing gaseous media under a liquid-metal layer

Also Published As

Publication number Publication date
RU2007115836A (ru) 2008-11-10
WO2008153440A2 (fr) 2008-12-18
EA200901452A1 (ru) 2010-08-30
EP2154256A2 (fr) 2010-02-17
EP2154256A4 (fr) 2010-11-17
CN101715491A (zh) 2010-05-26
RU2374328C2 (ru) 2009-11-27
BRPI0810678A2 (pt) 2015-06-16
WO2008153440A3 (fr) 2009-02-12
EA015797B1 (ru) 2011-12-30

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Legal Events

Date Code Title Description
AS Assignment

Owner name: TECHCOM GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SCHUMACHER, EDGAR;HLOPONIN, VIKTOR NIKOLAEVICH;FRANZKY, RENATA;AND OTHERS;REEL/FRAME:023783/0843

Effective date: 20091022

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION