EP0877822B1 - Procede de transformation de minerais de fer en fonte brute liquide ou en produits bruts en acier - Google Patents

Procede de transformation de minerais de fer en fonte brute liquide ou en produits bruts en acier Download PDF

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Publication number
EP0877822B1
EP0877822B1 EP97911044A EP97911044A EP0877822B1 EP 0877822 B1 EP0877822 B1 EP 0877822B1 EP 97911044 A EP97911044 A EP 97911044A EP 97911044 A EP97911044 A EP 97911044A EP 0877822 B1 EP0877822 B1 EP 0877822B1
Authority
EP
European Patent Office
Prior art keywords
sponge iron
piled
melt
iron
zone
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.)
Expired - Lifetime
Application number
EP97911044A
Other languages
German (de)
English (en)
Other versions
EP0877822A1 (fr
Inventor
Leopold Werner Kepplinger
Felix Wallner
Johannes-Leopold Schenk
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
Voest Alpine Industrienlagenbau GmbH
Deutsche Voest Alpine Industrieanlagenbau 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
Priority claimed from AT0196396A external-priority patent/AT404021B/de
Priority claimed from AT0196296A external-priority patent/AT404020B/de
Application filed by Voest Alpine Industrienlagenbau GmbH, Deutsche Voest Alpine Industrieanlagenbau GmbH filed Critical Voest Alpine Industrienlagenbau GmbH
Publication of EP0877822A1 publication Critical patent/EP0877822A1/fr
Application granted granted Critical
Publication of EP0877822B1 publication Critical patent/EP0877822B1/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
    • 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 liquid pig iron or Steel preliminary products from ore, which are partly and / or partially in at least one reduction zone reduced reduced sponge iron is reduced in a meltdown gasification zone a melter gasifier with the supply of carbonaceous material and oxygen with simultaneous formation of a reducing gas in a solid carbon carrier formed bed is melted, if necessary after a previous reduction.
  • a method of this type is known, for example, from EP-A-0 576 414.
  • the iron sponge partially or completely reduced from piece ore in a shaft furnace Discharge screws from the shaft furnace into the solid in the melter gasifier Carbon carriers formed bed, etc. in an approximately uniform distribution. That in the Melting gasification zone formed reducing gas flows through a certain one Gap volume-containing bed made of solid carbon supports and melts the iron sponge placed in the bed. For the effectiveness of this procedure is a certain minimum gap volume of the bed made of solid carbon carriers required.
  • a method of the type described at the outset is known, for example from EP-A-0 594 557, according to which fine ore is reduced to sponge iron in the fluidized bed method.
  • the partially or completely reduced sponge iron is forced into the bed made of solid carbon carriers, etc. by means of forced conveyance, which is implemented by injectors. in an approximately uniform distribution. That in the Melting gasification zone formed reducing gas flows here up through the bed of solid carbon carriers with a certain gap volume and melts the sponge iron introduced into the bed. A certain minimum gap volume of the bed made of solid carbon carriers is required for the effectiveness of this method.
  • the invention aims at avoiding these disadvantages and difficulties and presents itself the task of creating a method of the type described in the opening paragraph, in which a effective reduction gas formation through perfect gas flow through the entire bed even with a small gap volume of the bed made of solid carbon carriers and at the same time there is an efficient melting of the iron sponge introduced.
  • the sponge iron is under formation circular iron sponge layer areas introduced into the melting gasification zone.
  • the sponge iron advantageously forming a single cross-sectional plane Sponge iron layer area is introduced into the meltdown gasification zone, and wherein the sponge iron layer region extends centrally over the cross section and forms an annular cross-sectional area free of the sponge iron.
  • the sponge iron is in the Melting gasification zone with formation of several lying in one level Sponge iron layer areas introduced, each arranged at a distance from each other are free from the sponge iron between the areas of iron sponge Cross-sectional areas result.
  • the sponge iron it is also possible for the sponge iron to form one in one plane lying circular iron sponge layer area in the Melting gasification zone is introduced, advantageously the sponge iron underneath Training of iron sponges free and outside and inside circular iron sponge layer area lying cross-sectional areas in the Melting gasification zone is introduced.
  • the solid carbon carriers are also discontinuously incorporated into the Melting gasification zone introduced, etc. reducing the quantity or Interruption of the introduction during the introduction of the sponge iron.
  • the sponge iron layer regions are advantageous formed gently sloping towards its edges.
  • the sponge iron is expediently formed from fine ore in the fluidized bed process.
  • the sponge iron is removed in a shaft furnace Lump ore formed.
  • a melter gasifier 1 is made of solid carbon carriers 2, such as coal, and oxygen-containing gas generated by gasification of the coal, a reducing gas that over a Derivation 3 is fed to a shaft furnace, not shown, in the lumpy Iron ore is reduced to sponge iron 4, e.g. according to EP-A - 0 576 414.
  • Das Reducing gas can also be supplied via a discharge line 3, not shown Fluidized bed reactor are fed into the fine ore in a fluidized bed zone Sponge iron is reduced, e.g. according to EP-A - 0 217 331.
  • the melter gasifier 1 has a feed 5 for the solid carbon carrier 2, one Feed 6 for oxygen-containing gases, a feed 7 for sponge iron and optionally, feeds for liquid or gaseous at room temperature Carbon carriers, such as hydrocarbons, as well as for burned aggregates. By doing Smelting gasifiers 1 collect below the melting gasification zone 8 molten pig iron 9 and molten slag 10, which are tapped 11 be tapped.
  • Both the Feeder 6 for the solid carbon carrier 2 and the feeder 7 for the Sponge iron 4 and the derivative 3 for the reducing gas are in the dome area 12 of the Melting gasifier 1 each to several and approximately radially symmetrical arrangement arranged.
  • the sponge iron 4 is charged discontinuously, wherein in a bed 13, formed from the solid carbon supports 2, embedded areas of iron sponge 14 are formed so that the sponge iron in bed 13 from solid Carbon carriers 2 is no longer evenly distributed, but forms intermediate layers.
  • the sponge iron layer regions 14 form both outside and inside of these circular areas free of sponge iron for each cross-sectional plane Cross-sectional areas 15.
  • the reducing gas generated during coal gasification can thus flow well through the porous bed 13 formed by solid carbon supports 2 and flow towards it the sponge iron layer regions 14 by melting the same as by the Arrows 16 illustrated over.
  • the cross-sectional areas 15 free of sponge iron 4 thus form well gas-permeable windows, so that an effective coal gasification, and thus one sufficient reduction gas formation is ensured. Due to the strong reduction gas formation the iron sponge 4 is also rapidly heated and melted.
  • the sponge iron layer regions 14 are preferably flat towards their edges 17 sloping, so that during the downward migration of the layer regions 14 the Diameter of the layer regions 14 is reduced by the melting process and also in the lower narrower area of the melter gasifier 1 sufficient gasification of the Bed 13 made of solid carbon supports 2 is guaranteed or one if necessary Desired enlargement of the free cross-sectional areas 15 for better gas flow given is.
  • the sponge iron layer regions 14 can also be seen from above be made circular, which in the upper part of the melting gasification zone 8 a ensures greater edge gasification of the bed 13. This results in faster heating and degassing the bed 13 from solid carbon supports 2.
  • circular and circular iron sponge layer areas can be introduced 14 are formed so that an optimal gasification and Melting operation is ensured. 2 are in the lower region Melting gasification zone 8 annular layer regions 14 are provided.
  • Facilities of this type are, for example, from blast furnace technology (cf. Ullmanns Encyclopedia of Industrial Chemistry, Volume 10 / Iron Figs. 62A, 62D and 63), where however with blast furnace charging devices with which a layered structure within the Blast furnace can be achieved, always extending over the entire cross section Layers of different materials, i.e. Aggregates, and formed of iron ore against which, according to the invention, the sponge iron layer regions 14 do not overlap may extend the entire cross-section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Processing Of Solid Wastes (AREA)

Claims (11)

  1. Procédé destiné à la fabrication de fonte brute liquide (9) ou d'avant-produits d'acier à partir de minerai qui, dans au moins une zone de réduction, est réduit en éponge de fer (4) partiellement et/ou intégralement réduite, laquelle est fondue, le cas échéant après une réduction finale préalable, dans une zone de gazéification à fusion (8) d'un gazéificateur de fusion (1) dans un lit (13) constitué de matières solides à base de carbone (2), par l'amenée de matériau contenant du carbone et d'oxygène en générant simultanément un gaz de réduction, caractérisé en ce qu'au moins l'éponge de fer (4) est introduite en discontinu dans la zone de gazéification à fusion (8) en formant dans le lit (13) de matières à base de carbone (2) des zones de couche (14) d'éponge de fer enrobées, superposées et séparées par des matières solides à base de carbone (2), les zones de couche (14) d'éponge de fer s'étendant sur la section transversale de la zone de gazéification à fusion (8) en laissant libre une zone (15) de section transversale de celle-ci, et du gaz de réduction généré dans la zone de gazéification à fusion (8) passant à côté des zones de couche (14) d'éponge de fer en les fondant, et circulant vers le haut en traversant les zones (15) de section transversale libres d'éponge de fer et formées par des matières à base de carbone (2), et les gazéifie.
  2. Procédé selon la revendication 1, caractérisé en ce que l'éponge de fer (4) est introduite dans la zone de gazéification à fusion (8) en formant des zones circulaires de couche (14) d'éponge de fer.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'éponge de fer est introduite dans la zone de gazéification à fusion (8) en formant une seule zone de couche (14) d'éponge de fer par plan de section transversale, la zone de couche (14) d'éponge de fer s'étendant de façon centrale sur la section transversale, et formant une zone (15) de section transversale en forme d'anneau de cercle qui est libre d'éponge de fer (4).
  4. Procédé selon l'une ou plusieurs des revendications 1 à 3, caractérisé en ce que l'éponge de fer (4) est introduite dans la zone de gazéification à fusion (8) en formant plusieurs zones de couche (14) d'éponge de fer situées dans un plan, qui sont respectivement disposées à une certaine distance les unes des autres, et qui forment ainsi des zones (15) de section transversale libres d'éponge de fer (4) entre les zones de couche (14) d'éponge de fer.
  5. Procédé selon l'une ou plusieurs des revendications 1 à 4, caractérisé en ce que l'éponge de fer (4) est introduite dans la zone de gazéification à fusion (8) en formant une zone de couche (14) d'éponge de fer en forme d'anneau de cercle située dans un plan.
  6. Procédé selon la revendication 5, caractérisé en ce que l'éponge de fer (4) est introduite dans la zone de gazéification à fusion (8) en formant des zones (15) de section transversale libres d'éponge de fer (4), et situées à l'extérieur et à l'intérieur de la zone de couche (14) d'éponge de fer en forme d'anneau de cercle.
  7. Procédé selon l'une ou plusieurs des revendications 1 à 6, caractérisé en ce que les matières solides à base de carbone (2) sont en outre également introduites en discontinu dans la zone de gazéification à fusion (8), et ce par réduction de la quantité ou interruption de leur introduction pendant l'introduction de l'éponge de fer.
  8. Procédé selon l'une ou plusieurs des revendications 1 à 7, caractérisé en ce que, pendant l'introduction de l'éponge de fer (4), l'introduction de matières solides à base de carbone est stoppée, en ce que l'introduction de l'éponge de fer est ensuite stoppée pendant un laps de temps défini, et seules des matières solides à base de carbone (2) sont introduites pendant un laps de temps défini, après quoi seule de l'éponge de fer (4) est à nouveau introduite pendant un laps de temps défini, etc.
  9. Procédé selon l'une ou plusieurs des revendications 1 à 8, caractérisé en ce que les zones de couche (14) d'éponge de fer sont formées en retombant à plat vers leurs bords (17).
  10. Procédé selon l'une ou plusieurs des revendications 1 à 9, caractérisé en ce que l'éponge de fer est produite à partir de fines de minerai selon le procédé à couche fluidisée.
  11. Procédé selon l'une ou plusieurs des revendications 1 à 9, caractérisé en ce que l'éponge de fer est produite dans un four vertical à partir de minerai à l'état de morceaux.
EP97911044A 1996-11-08 1997-11-05 Procede de transformation de minerais de fer en fonte brute liquide ou en produits bruts en acier Expired - Lifetime EP0877822B1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
AT1962/96 1996-11-08
AT0196396A AT404021B (de) 1996-11-08 1996-11-08 Verfahren zur herstellung von flüssigem roheisen oder stahlvorprodukten aus feinerz
AT196396 1996-11-08
AT196296 1996-11-08
AT0196296A AT404020B (de) 1996-11-08 1996-11-08 Verfahren zur herstellung von flüssigem roheisen oder stahlvorprodukten aus stückerz
AT1963/96 1996-11-08
PCT/AT1997/000237 WO1998021370A1 (fr) 1996-11-08 1997-11-05 Procede de transformation de minerais de fer en fonte brute liquide ou en produits bruts en acier

Publications (2)

Publication Number Publication Date
EP0877822A1 EP0877822A1 (fr) 1998-11-18
EP0877822B1 true EP0877822B1 (fr) 2001-03-07

Family

ID=25597291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97911044A Expired - Lifetime EP0877822B1 (fr) 1996-11-08 1997-11-05 Procede de transformation de minerais de fer en fonte brute liquide ou en produits bruts en acier

Country Status (20)

Country Link
US (1) US6179896B1 (fr)
EP (1) EP0877822B1 (fr)
JP (1) JP4498470B2 (fr)
KR (1) KR100458552B1 (fr)
CN (1) CN1055503C (fr)
AT (1) ATE199573T1 (fr)
AU (1) AU731008B2 (fr)
BR (1) BR9707114A (fr)
CA (1) CA2242375C (fr)
CZ (1) CZ288112B6 (fr)
DE (1) DE59703104D1 (fr)
ID (1) ID27675A (fr)
MY (1) MY117002A (fr)
PL (1) PL185226B1 (fr)
RU (1) RU2175674C2 (fr)
SK (1) SK283076B6 (fr)
TR (1) TR199801275T1 (fr)
TW (1) TW357194B (fr)
UA (1) UA43905C2 (fr)
WO (1) WO1998021370A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT407052B (de) * 1998-08-13 2000-12-27 Voest Alpine Ind Anlagen Verfahren zur herstellung von flüssigem roheisen
CN104278122B (zh) * 2003-01-31 2016-09-14 杰富意钢铁株式会社 海绵铁制造用原料的装入装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE457265B (sv) * 1981-06-10 1988-12-12 Sumitomo Metal Ind Foerfarande och anlaeggning foer framstaellning av tackjaern
AT382390B (de) * 1985-03-21 1987-02-25 Voest Alpine Ind Anlagen Verfahren zur herstellung von fluessigem roheisen oder stahlvorprodukten
DE3535572A1 (de) 1985-10-03 1987-04-16 Korf Engineering Gmbh Verfahren zur herstellung von roheisen aus feinerz
JPS6465212A (en) * 1987-09-03 1989-03-10 Kobe Steel Ltd Method for operating blast furnace
AT401777B (de) 1992-05-21 1996-11-25 Voest Alpine Ind Anlagen Verfahren und anlage zur herstellung von flüssigen roheisen oder flüssigen stahlvorprodukten
AT404735B (de) 1992-10-22 1999-02-25 Voest Alpine Ind Anlagen Verfahren und anlage zur herstellung von flüssigem roheisen oder flüssigen stahlvorprodukten
JPH06271908A (ja) * 1993-03-19 1994-09-27 Kawasaki Steel Corp ベルレス高炉の原料多バッチ装入方法
JPH06279819A (ja) * 1993-03-26 1994-10-04 Kawasaki Steel Corp 高炉における炉内原料装入物の堆積制御方法
JP3511784B2 (ja) * 1996-03-18 2004-03-29 Ｊｆｅスチール株式会社 竪型鉄スクラップ溶解炉の原料装入方法

Also Published As

Publication number Publication date
TW357194B (en) 1999-05-01
JP4498470B2 (ja) 2010-07-07
CZ213298A3 (cs) 1999-07-14
AU731008B2 (en) 2001-03-22
CZ288112B6 (cs) 2001-04-11
BR9707114A (pt) 1999-07-20
CA2242375C (fr) 2009-03-17
ATE199573T1 (de) 2001-03-15
PL185226B1 (pl) 2003-04-30
CN1055503C (zh) 2000-08-16
EP0877822A1 (fr) 1998-11-18
KR100458552B1 (ko) 2005-04-06
DE59703104D1 (de) 2001-04-12
TR199801275T1 (xx) 1998-12-21
SK283076B6 (sk) 2003-02-04
AU4855697A (en) 1998-06-03
WO1998021370A1 (fr) 1998-05-22
RU2175674C2 (ru) 2001-11-10
CA2242375A1 (fr) 1998-05-22
CN1207138A (zh) 1999-02-03
US6179896B1 (en) 2001-01-30
PL327830A1 (en) 1999-01-04
ID27675A (id) 2001-04-19
UA43905C2 (uk) 2002-01-15
JP2000503352A (ja) 2000-03-21
MY117002A (en) 2004-04-30
SK93698A3 (en) 1998-12-02
KR19990077106A (ko) 1999-10-25

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