EP0865505B1 - Procede de briquetage a chaud d'eponge de fer granuleuse - Google Patents

Procede de briquetage a chaud d'eponge de fer granuleuse Download PDF

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Publication number
EP0865505B1
EP0865505B1 EP96943042A EP96943042A EP0865505B1 EP 0865505 B1 EP0865505 B1 EP 0865505B1 EP 96943042 A EP96943042 A EP 96943042A EP 96943042 A EP96943042 A EP 96943042A EP 0865505 B1 EP0865505 B1 EP 0865505B1
Authority
EP
European Patent Office
Prior art keywords
briquettes
hot
fragments
sponge iron
rotary drum
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
EP96943042A
Other languages
German (de)
English (en)
Other versions
EP0865505A1 (fr
Inventor
Jochen Freytag
Helmut Hausmann
Martin Hirsch
Siegfried Schimo
Michael STRÖDER
Peter Weber
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.)
GEA Group AG
Original Assignee
Metallgesellschaft 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 Metallgesellschaft AG filed Critical Metallgesellschaft AG
Publication of EP0865505A1 publication Critical patent/EP0865505A1/fr
Application granted granted Critical
Publication of EP0865505B1 publication Critical patent/EP0865505B1/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
    • C21B13/0086—Conditioning, transformation of reduced iron ores
    • 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
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating

Definitions

  • the invention relates to a method for hot briquetting granular sponge iron, taking the granular sponge iron with Temperatures of 600 to 850 ° C for forming the hot briquettes Roller press gives up and a band structure made of sponge iron molded hot briquettes spaced from each other generated, from which you can smash the hot briquettes isolated, whereby fragments of the band structure arise.
  • the invention has for its object the manufacture of Hot briquettes are inexpensive and require little equipment perform, in particular the wear and tear Susceptibility to interference should be kept as low as possible.
  • the task at the beginning Process solved in that after smashing the Band structure the hot briquettes and at least part of the Fragments at temperatures in the range of 20 to 400 ° C and preferably cools at most 200 ° C that the cooled Briquettes and fragments passed through a rotating drum, whereby from the briquettes and fragments of fine-grained abrasion is formed, and that the abrasion from the briquettes and Separates fragments.
  • Grainy and especially fine-grained sponge iron is very pyrophoric, so that only under an inert gas atmosphere can be worked.
  • a suitable protective gas is e.g. Nitrogen or carbon dioxide or a mixture of these inert gases.
  • the sponge iron suitable for the process can be in a any known iron ore reduction plant can be generated.
  • the sponge iron usually has an Fe content of 90 to 98% by weight.
  • Hotter granular is in the storage container (1) Sponge iron with temperatures in the range of 600 to 850 ° C and usually 650 to 750 ° C. Because the sponge iron is very pyrophoric is here and also in the following Processing steps held under an inert gas atmosphere, as it is known per se and not explained in detail here is.
  • the hot sponge iron comes e.g. from a reduction furnace or heater (6) and is introduced through line (6a).
  • the sponge iron flows continuously from the container (1) a roller press (2) in which the sponge iron forms a Band structure (3) with molded hot briquettes is pressed.
  • Figure 2 shows the band structure (3) and the hot briquettes (3a) in View.
  • the belt structure (3) runs downwards over a stationary one Striking face (4) and is doing with a rotating Break the hammer roller (5).
  • the roller (5) has impact cams (5a) which, when the roller rotates on the belt structure (3) especially in the areas between the briquettes (3a) have a crushing effect.
  • This way hot briquettes and Fragments of various grain sizes from the face (4) down on a sieve (7) to separate fine grain.
  • This Fine grain whose maximum grain size is 2 to 6 mm, is in withdrawn from the line (8) and reused. To this end you can first of all the fine grain of the line (8) by a Conduct cooler (22) which e.g. than water-cooled Screw conveyor is designed.
  • pneumatic conveying section (21) which is filled with inert gas from the Line (23) is fed and the fine grain up to Reduction furnace or heater (6) transported.
  • the hot briquettes fall through the channel (9) and rough fragments first in a cooler (10), where a Cooling to temperatures in the range of 50 to 400 ° C and usually at most 200 ° C.
  • the one in Figure 1 only schematically illustrated cooler (10) can e.g. as a water bath or be designed as a water injection cooler, also comes cooling with cold gas in question.
  • the material moving in the drum (12) falls through the channel (14) with temperatures of 20 to 150 ° C and usually at most 100 ° C in a screening device (15).
  • Fragments and abrasion fall on the second sieve (15b), whereby the relatively coarse fragments with a Granulation of e.g. cut off at least 3 to 6 mm in the line (17) subtracts.
  • Fine grain is discharged in line (18) and usually together with the fine grain of the line (8) in the Reduction furnace or heater (6) returned.
  • the briquettes and the fragments of lines (16) and (17) are entered into Interim storage, not shown, now a storage is no longer required under inert gas.
  • FIG. 1 An intermediate container (20) or storage is indicated in FIG. 1, which one cooled goods from the cooler (10) in the direction of Dashed line (19) feeds when the rotary drum (12) Decommissioned for a certain period of time must become.
  • the drum (12) is ready for use again, the goods from the container (20) or warehouse to Subsequent treatment of the drum (12) abandoned.
  • all apparatus, containers and lines in which Fine grain is present to be kept under protective gas are indicated in FIG. 1, which one cooled goods from the cooler (10) in the direction of Dashed line (19) feeds when the rotary drum (12) Decommissioned for a certain period of time must become.
  • the Rotary drum (12) is rinsed with water on the outer jacket chilled.
  • the sieve (15a) separates briquettes of at least 12 mm Diameter from and the fragments of the line (17) are in Range from 4 to 12 mm.
  • the sieve (7) has openings of 4 mm Diameter.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Iron (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Glanulating (AREA)

Claims (4)

  1. Procédé de briquetage à chaud d'éponge de fer granuleuse, dans lequel on alimente l'éponge de fer granuleuse, à des températures comprises entre 600 et 850°C, dans une presse à cylindres en vue de former les briques chaudes, et on produit une structure en forme de bande faite d'éponge de fer dans laquelle sont formées des briques chaudes situées à distance les unes des autres et à partir de laquelle on individualise les briques chaudes en brisant la structure, ce qui entraíne la production de fragments de la structure en forme de bande, dans lequel on refroidit les briques chaudes et au moins une partie des fragments à des températures comprises entre 20 et 400°C, on fait passer les briques et les fragments refroidis à travers un tambour rotatif, des déchets d'abrasion à grains fins étant formés à partir des briques et des fragments, et dans lequel on sépare les déchets d'abrasion des briques et des fragments.
  2. Procédé selon la revendication 1, caractérisé en ce que l'on refroidit les briques, les fragments et les déchets d'abrasion dans le tambour rotatif.
  3. Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que l'on retire les briques, les fragments et les déchets d'abrasion du tambour rotatif à des températures comprises entre 20 et 150°C.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que, après avoir brisé la structure en forme de bande, on sépare des fragments la fraction des grains fins dont la limite supérieure de granulation est de 2 à 6 mm.
EP96943042A 1995-12-09 1996-12-05 Procede de briquetage a chaud d'eponge de fer granuleuse Expired - Lifetime EP0865505B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19545985A DE19545985A1 (de) 1995-12-09 1995-12-09 Verfahren zum Heißbrikettieren von körnigem Eisenschwamm
DE19545985 1995-12-09
PCT/EP1996/005446 WO1997021840A1 (fr) 1995-12-09 1996-12-05 Procede de briquetage a chaud d'eponge de fer granuleuse

Publications (2)

Publication Number Publication Date
EP0865505A1 EP0865505A1 (fr) 1998-09-23
EP0865505B1 true EP0865505B1 (fr) 1999-05-26

Family

ID=7779656

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96943042A Expired - Lifetime EP0865505B1 (fr) 1995-12-09 1996-12-05 Procede de briquetage a chaud d'eponge de fer granuleuse

Country Status (13)

Country Link
US (1) US6074456A (fr)
EP (1) EP0865505B1 (fr)
KR (1) KR100444249B1 (fr)
AR (1) AR004865A1 (fr)
AU (1) AU705558B2 (fr)
CA (1) CA2238383C (fr)
DE (2) DE19545985A1 (fr)
EA (1) EA000266B1 (fr)
ES (1) ES2131970T3 (fr)
IN (1) IN190918B (fr)
MY (1) MY115660A (fr)
WO (1) WO1997021840A1 (fr)
ZA (1) ZA9610347B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT407258B (de) * 1999-03-17 2001-02-26 Voest Alpine Ind Anlagen Vorrichtung zum herstellen von heissbrikettiertem metallschwamm, insbesondere heissbrikettiertem eisenschwamm
US6352573B2 (en) * 2000-03-21 2002-03-05 Midrex International B.V. Rotterdam Method for the separation and recycling of hot fines in hot briquetting of reduced iron
US7776136B2 (en) * 2002-12-21 2010-08-17 Posco Apparatus for manufacturing molten irons by hot compacting fine direct reduced irons and calcined additives and method using the same
AU2005296406B2 (en) * 2004-10-19 2009-12-10 Posco Apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and apparatus for manufacturing molten irons using the same
KR100797843B1 (ko) * 2006-12-27 2008-01-24 주식회사 포스코 괴성체 제조 장치 및 이를 이용한 용철제조장치
US8518146B2 (en) 2009-06-29 2013-08-27 Gb Group Holdings Limited Metal reduction processes, metallurgical processes and products and apparatus
AT509357B1 (de) * 2010-01-15 2012-01-15 Siemens Vai Metals Tech Gmbh Verfahren und vorrichtung zur reduktion von eisenerzhältigen einsatzstoffen oder zur herstellung von roheisen oder flüssigen stahlvorprodukten
WO2014043205A1 (fr) * 2012-09-14 2014-03-20 Valerio Thomas A Système et procédé pour traitement de sous-produits de minerai de fer
KR101429643B1 (ko) * 2012-12-07 2014-08-13 주식회사 포스코 판상 hbi 입자 분리 장치
DE102014111906A1 (de) * 2014-08-20 2016-02-25 Maschinenfabrik Köppern Gmbh & Co. Kg Anlage zum Heißbrikettieren
KR102077689B1 (ko) * 2019-05-03 2020-02-14 제일산기 주식회사 고온 브리켓 철의 제조장치

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1215666A (fr) * 1958-02-19 1960-04-20 R N Corp Procédé de production de fer, appareil pour sa réalisation et produit obtenu
DE1533852B2 (de) * 1967-03-29 1973-10-04 Metallgesellschaft Ag, 6000 Frankfurt Brikettierung von Eisenschwamm
US4076520A (en) * 1975-06-05 1978-02-28 Midrex Corporation Method for continuous passivation of sponge iron material
US4033559A (en) * 1975-06-05 1977-07-05 Midrex Corporation Apparatus for continuous passivation of sponge iron material
US4057978A (en) * 1976-02-17 1977-11-15 Sumitomo Heavy Industries, Ltd. Apparatus for cooling pellets
US4165979A (en) * 1978-02-21 1979-08-28 The International Nickel Company, Inc. Flash smelting in confined space
US4165978A (en) * 1978-07-14 1979-08-28 Midrex Corporation Briquet sheet breaking by cooling and bending
JPS59170213A (ja) * 1983-03-16 1984-09-26 Nippon Steel Corp 還元鉄ブリケツトの製造方法
US5082251A (en) * 1990-03-30 1992-01-21 Fior De Venezuela Plant and process for fluidized bed reduction of ore

Also Published As

Publication number Publication date
KR19990072021A (ko) 1999-09-27
MY115660A (en) 2003-08-30
ES2131970T3 (es) 1999-08-01
IN190918B (fr) 2003-08-30
AR004865A1 (es) 1999-03-10
EA199800543A1 (ru) 1998-12-24
EA000266B1 (ru) 1999-02-25
DE59602029D1 (de) 1999-07-01
CA2238383A1 (fr) 1997-06-19
DE19545985A1 (de) 1997-06-12
US6074456A (en) 2000-06-13
AU1191097A (en) 1997-07-03
CA2238383C (fr) 2004-05-18
WO1997021840A1 (fr) 1997-06-19
AU705558B2 (en) 1999-05-27
ZA9610347B (en) 1998-06-09
EP0865505A1 (fr) 1998-09-23
KR100444249B1 (ko) 2004-11-17
MX9804595A (es) 1998-10-31

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