EP0195770A1 - Procédé pour la production de la fonte liquide ou de préproduits en acier - Google Patents

Procédé pour la production de la fonte liquide ou de préproduits en acier Download PDF

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Publication number
EP0195770A1
EP0195770A1 EP86890063A EP86890063A EP0195770A1 EP 0195770 A1 EP0195770 A1 EP 0195770A1 EP 86890063 A EP86890063 A EP 86890063A EP 86890063 A EP86890063 A EP 86890063A EP 0195770 A1 EP0195770 A1 EP 0195770A1
Authority
EP
European Patent Office
Prior art keywords
oxygen
fixed bed
fluidized bed
containing gas
iron
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
EP86890063A
Other languages
German (de)
English (en)
Other versions
EP0195770B1 (fr
Inventor
Rolf Dr Dipl Ing Hauk
Werner Dr Dipl Ing Kepplinger
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
Deutsche Voest Alpine Industrieanlagenbau GmbH
Original Assignee
Voestalpine AG
Voest Alpine Industrienlagenbau GmbH
Deutsche Voest Alpine Industrieanlagenbau GmbH
Korf Engineering 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 Voestalpine AG, Voest Alpine Industrienlagenbau GmbH, Deutsche Voest Alpine Industrieanlagenbau GmbH, Korf Engineering GmbH filed Critical Voestalpine AG
Publication of EP0195770A1 publication Critical patent/EP0195770A1/fr
Application granted granted Critical
Publication of EP0195770B1 publication Critical patent/EP0195770B1/fr
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
    • C21B13/0013—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state introduction of iron oxide into a bath of molten iron containing a carbon reductant
    • C21B13/002—Reduction of iron ores by passing through a heated column of carbon

Definitions

  • the invention relates to a process for the production of molten pig iron or intermediate steel products from particulate ferrous material, in particular from pre-reduced iron sponge, and for the production of reducing gas in a melter gasifier by adding coal and by blowing in oxygen-containing gas by means of nozzle pipes penetrating the wall of the melter gasifier, one of which being a fixed bed of coke particles through which the oxygen-containing gas flows and above which a fluidized bed (fluidized bed) of coke particles is formed and the iron-containing material is given to the fluidized bed.
  • EP-A1-0 114 040 A method of the type described is described in EP-A1-0 114 040, the oxygen-containing gas being introduced at two different levels, respectively into the fixed bed and into the fluid bed of coke particles above it.
  • the invention aims at avoiding the difficulties described and has as its object to avoid reoxidation of the molten products in the melter and to reduce the primary energy requirement.
  • This object is achieved according to the invention in a method of the type described in the introduction in that a non-gasified fixed bed of coke particles is provided below the fixed bed through which oxygen-containing gas flows and in that the fluidized bed is flowed through by oxygen-free or oxygen-poor gas over the fixed bed through which oxygen-containing gas flows.
  • the height of the fixed bed through which oxygen-containing gas flows is expediently set and maintained via the grain size distribution of the coal introduced into the melter gasifier.
  • the fixed bed can be particularly pronounced if the co-classification of the coarse fraction of the coal introduced is within narrow limits.
  • the refractory lined melter 1 has a lower section 1 ', a middle section 1 "and an enlarged upper section 1" ".
  • the lower section 1 ' is intended for receiving the molten bath.
  • at least one discharge 5 for the reducing gas formed is provided in the upper section.
  • coarser coke sticks are used to form the fixed beds (fixed bed zones) labeled I and II.
  • the melt pool that accumulates underneath consists of - molten metal 6 and the slag 7, whereby a tapping can be provided for both components.
  • the fixed bed I has no gas supply, so it is not gas-fired.
  • the fixed bed II is formed, in which the coke particles are flowed through by the oxygen-containing gas flowing in from the supply lines 2 to form carbon monoxide
  • the gas supply lines are only kept in motion by the reaction gases in the fixed bed II, which contain carbon monoxide.
  • Small coal or coke particles remain in the fluidized bed zone III. Larger coal or coke particles, for which the empty pipe speed of the gas flow is below the loosening point for a ent protruding particle bed, are only slowed down, fall through the fluidized bed III and settle to form the fixed bed II or the fixed bed I.
  • zone III As a result of the fact that zone III is not exposed to oxygen or oxygen-containing gas, there is a reducing gas atmosphere in this zone, as a result of which the carbon content of the pre-reduced iron-containing particles, such as sponge iron, introduced from above is retained
  • the heat required for the process is generated in a known manner by gasifying coal, the sponge iron to be melted is countercurrently communicated, and the melt formed, consisting of slag and metal, is overheated.
  • the overheating must be so strong (approx. that the heat demand for the endothermic reactions taking place in the fixed bed zones I and II is covered and that the melt collected in the lower part of the melter gasifier still has a temperature sufficient for the further treatment.
  • Another advantage of the method according to the invention is that the assembly or. Instrumentation effort is lower because, compared to the method of operation mentioned at the beginning, there is no nozzle plane
  • the slag or Metal bath had a temperature of 1400 to 1500 ° C; in the expanded upper section 1 ′′ of the melter gasifier, a gas temperature of 1500 ° C. was measured at the upper limit of the fluidized bed III, and a gas temperature of 1100 ° C. in the so-called calming zone above.
  • the reducing gas was withdrawn via outlets 5 in an amount of 1330 m 3 (under normal conditions) / t of pig iron, the pig iron formed had a C content of 3.5%, an Si content of 0.3% and an S content of 0.1%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
EP86890063A 1985-03-21 1986-03-17 Procédé pour la production de la fonte liquide ou de préproduits en acier Expired EP0195770B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0084685A AT382390B (de) 1985-03-21 1985-03-21 Verfahren zur herstellung von fluessigem roheisen oder stahlvorprodukten
AT846/85 1985-03-21

Publications (2)

Publication Number Publication Date
EP0195770A1 true EP0195770A1 (fr) 1986-09-24
EP0195770B1 EP0195770B1 (fr) 1988-12-14

Family

ID=3501117

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86890063A Expired EP0195770B1 (fr) 1985-03-21 1986-03-17 Procédé pour la production de la fonte liquide ou de préproduits en acier

Country Status (15)

Country Link
US (1) US4708736A (fr)
EP (1) EP0195770B1 (fr)
JP (1) JPS61221315A (fr)
KR (1) KR930007308B1 (fr)
CN (1) CN86101817B (fr)
AT (1) AT382390B (fr)
AU (1) AU574906B2 (fr)
BR (1) BR8601242A (fr)
CA (1) CA1268633A (fr)
CS (1) CS264273B2 (fr)
DD (1) DD247025A5 (fr)
DE (1) DE3661424D1 (fr)
IN (1) IN166414B (fr)
SU (1) SU1473716A3 (fr)
ZA (1) ZA861922B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998021370A1 (fr) * 1996-11-08 1998-05-22 Voest-Alpine Industrieanlagenbau Gmbh Procede de transformation de minerais de fer en fonte brute liquide ou en produits bruts en acier
WO2009062611A1 (fr) * 2007-11-13 2009-05-22 Siemens Vai Metals Technologies Gmbh & Co Procédé de fabrication et de fusion de fonte brute liquide ou de demi-produits d'acier liquide dans un gazéificateur de fusion

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT386006B (de) * 1986-10-30 1988-06-27 Voest Alpine Ag Verfahren und anlage zur gewinnung von metallen bzw. metallegierungen
AT386007B (de) * 1986-10-30 1988-06-27 Voest Alpine Ag Verfahren und anlage zur gewinnung von metallen bzw. metallegierungen
EP0297167B1 (fr) * 1987-06-30 1993-08-11 Kawasaki Steel Corporation Procédé et appareil pour la production de métal liquide à partir de poudres de minerai
BE1006828A3 (fr) * 1991-07-12 1995-01-03 Elsen Tooling Ireland Ltd Procede en vue de la preparation de metaux, et en particulier de fer, a partir de minerais oxydes, a une temperature de reduction quelconque, dans un four de reduction a gouttes.
US5354356A (en) * 1992-10-06 1994-10-11 Bechtel Group Inc. Method of providing fuel for an iron making process
US6197088B1 (en) 1992-10-06 2001-03-06 Bechtel Group, Inc. Producing liquid iron having a low sulfur content
US5320676A (en) * 1992-10-06 1994-06-14 Bechtel Group, Inc. Low slag iron making process with injecting coolant
US5397376A (en) * 1992-10-06 1995-03-14 Bechtel Group, Inc. Method of providing fuel for an iron making process
US5958107A (en) * 1993-12-15 1999-09-28 Bechtel Croup, Inc. Shift conversion for the preparation of reducing gas
AT503593B1 (de) * 2006-04-28 2008-03-15 Siemens Vai Metals Tech Gmbh Verfahren zur herstellung von flüssigem roheisen oder flüssigen stahlvorprodukten aus feinteilchenförmigem eisenoxidhältigem material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3216019A1 (de) * 1981-06-10 1983-01-27 Sumitomo Metal Industries, Ltd., Osaka Kohlevergasung und roheisenherstellung und vorrichtung dafuer
DE3345106A1 (de) * 1983-01-03 1984-07-12 Voest-Alpine Ag, Wien Verfahren zum schmelzen von zumindest teilweise reduziertem eisenerz
EP0114040A1 (fr) * 1982-12-21 1984-07-25 VOEST-ALPINE Aktiengesellschaft Procédé et gazéificateur de fusion pour la production de la fonte brute liquide ou de produits de base de l'acier
DD226157A3 (de) * 1983-06-01 1985-08-14 Bandstahlkombinat Matern Veb Verfahren zur erzeugung von fluessigem roheisen und reduktionsgas in einem abstichgenerator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948640A (en) * 1973-04-30 1976-04-06 Boliden Aktiebolag Method of carrying out heat-requiring chemical and/or physical processes
DE3438487A1 (de) * 1984-10-17 1986-04-24 Korf Engineering GmbH, 4000 Düsseldorf Verfahren zur herstellung von roheisen
SU1479006A3 (ru) * 1984-11-26 1989-05-07 Фоест-Альпине (Фирма) Способ получени жидкого чугуна или продуктов стали и восстановительного газа в плавильном газификаторе
DE3504346C2 (de) * 1985-02-06 1986-11-27 Korf Engineering GmbH, 4000 Düsseldorf Verfahren und Vorrichtung zur Erzeugung von Eisenschwammpartikeln und flüssigem Roheisen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3216019A1 (de) * 1981-06-10 1983-01-27 Sumitomo Metal Industries, Ltd., Osaka Kohlevergasung und roheisenherstellung und vorrichtung dafuer
EP0114040A1 (fr) * 1982-12-21 1984-07-25 VOEST-ALPINE Aktiengesellschaft Procédé et gazéificateur de fusion pour la production de la fonte brute liquide ou de produits de base de l'acier
DE3345106A1 (de) * 1983-01-03 1984-07-12 Voest-Alpine Ag, Wien Verfahren zum schmelzen von zumindest teilweise reduziertem eisenerz
DD226157A3 (de) * 1983-06-01 1985-08-14 Bandstahlkombinat Matern Veb Verfahren zur erzeugung von fluessigem roheisen und reduktionsgas in einem abstichgenerator

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998021370A1 (fr) * 1996-11-08 1998-05-22 Voest-Alpine Industrieanlagenbau Gmbh Procede de transformation de minerais de fer en fonte brute liquide ou en produits bruts en acier
CN1055503C (zh) * 1996-11-08 2000-08-16 奥地利钢铁联合企业阿尔帕工业设备制造公司 用矿石生产生铁水或钢的预产物的方法
US6179896B1 (en) 1996-11-08 2001-01-30 Deutsche Voest-Alpine Industrieanlagenbau Gmbh Process for producing liquid pig iron or semifinished steel products from ore
WO2009062611A1 (fr) * 2007-11-13 2009-05-22 Siemens Vai Metals Technologies Gmbh & Co Procédé de fabrication et de fusion de fonte brute liquide ou de demi-produits d'acier liquide dans un gazéificateur de fusion
US8313552B2 (en) 2007-11-13 2012-11-20 Siemens Vai Metals Technologies Gmbh Method for the production and the melting of liquid pig iron or of liquid steel intermediate products in a melt-down gasifier
AU2008323317B2 (en) * 2007-11-13 2014-01-09 Posco Method for the production and the melting of liquid pig iron or of liquid steel intermediate products in a melt-down gasifier

Also Published As

Publication number Publication date
KR860007386A (ko) 1986-10-10
AT382390B (de) 1987-02-25
JPS61221315A (ja) 1986-10-01
ZA861922B (en) 1986-11-26
CN86101817A (zh) 1986-11-05
SU1473716A3 (ru) 1989-04-15
JPS648044B2 (fr) 1989-02-13
CN86101817B (zh) 1988-07-06
AU574906B2 (en) 1988-07-14
IN166414B (fr) 1990-05-05
DE3661424D1 (en) 1989-01-19
BR8601242A (pt) 1986-12-02
US4708736A (en) 1987-11-24
AU5466486A (en) 1986-09-25
DD247025A5 (de) 1987-06-24
CS196586A2 (en) 1988-09-16
CA1268633A (fr) 1990-05-08
KR930007308B1 (ko) 1993-08-05
EP0195770B1 (fr) 1988-12-14
ATA84685A (de) 1986-07-15
CS264273B2 (en) 1989-06-13

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