[go: up one dir, main page]

EP0865505A1 - Procede de briquetage a chaud d'eponge de fer granuleuse - Google Patents

Procede de briquetage a chaud d'eponge de fer granuleuse

Info

Publication number
EP0865505A1
EP0865505A1 EP96943042A EP96943042A EP0865505A1 EP 0865505 A1 EP0865505 A1 EP 0865505A1 EP 96943042 A EP96943042 A EP 96943042A EP 96943042 A EP96943042 A EP 96943042A EP 0865505 A1 EP0865505 A1 EP 0865505A1
Authority
EP
European Patent Office
Prior art keywords
fragments
hot
briquettes
sponge iron
cooled
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
EP96943042A
Other languages
German (de)
English (en)
Other versions
EP0865505B1 (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

Links

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 of granular iron sponge, wherein the granular iron sponge is given in at temperatures of 600 to 850 ° C for forming the hot briquettes of a roller press and a band structure made of sponge iron with shaped, spaced hot briquettes from which one is made the hot briquettes are separated by breaking them, whereby fragments of the band structure arise.
  • the invention has for its object to carry out the production of hot frikiquets inexpensively and with little expenditure on equipment, in particular the wear and the susceptibility to malfunction should be kept as low as possible. According to the invention the task is mentioned at the beginning
  • CONFIRMATION COPY Process solved in that after breaking the band structure, the hot briquettes and at least some of the fragments are cooled to temperatures in the range from 20 to 400 ° C. and preferably at most 200 ° C. by passing the cooled briquettes and fragments through a rotating drum, whereby fine-grained abrasion is formed from the briquettes and fragments, and that the abrasion is separated from the briquettes and fragments.
  • Granular and especially fine-grained sponge iron is very pyrophoric, so that it can only be used in an inert gas atmosphere.
  • 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 produced in any known iron ore reduction plant.
  • the sponge iron usually has an Fe content of 90 to 98% by weight.
  • This cooling avoids having to give up hot material to the rotating drum and having to design the rotating drum to process this hot material. It has been shown that if you give the rotary drum hot material with temperatures above 400 ° C, the wear in the drum is very high and the rotary drum often has to be repaired. Such frequent repairs make it necessary to have a spare rotary drum ready if you want to continuously produce hot briquettes.
  • the method of the invention has the advantage that only cooled goods are fed to the rotary drum, as a result of which the drum is stressed less and an outage due to repair is rarely necessary.
  • FIG. 1 shows the flow diagram of the method
  • FIG 2 shows the belt structure coming from the roller press
  • the storage container (1) there is hot, granular iron sponge with temperatures in the range from 600 to 850 ° C. and usually 650 to 750 ° C. Because the sponge iron is very pyrophoric is here and also in the following
  • 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) to a roller press (2), in which the sponge iron is pressed into a belt structure (3) with shaped hot briquettes.
  • Figure 2 shows the band structure (3) and the hot briquettes (3a) in view.
  • the belt structure (3) runs down over a stationary face (4) and is broken up with a rotating hammer roller (5).
  • the roller (5) has impact cams (5a) which, when the roller rotates, have a comminuting effect on the belt structure (3), in particular in the regions between the briquettes (3a).
  • hot briquettes and fragments of various grits fall down from the face (4) onto a sieve (7) in order to separate fine particles.
  • This fine grain whose maximum grain size is 2 to 6 mm, is drawn off in the line (8) and reused.
  • the fine grain of the line (8) can first be passed through a cooler (22) which is designed, for example, as a water-cooled screw conveyor.
  • the fine grain then reaches a pneumatic conveying section (21) which is fed with inert gas from the line (23) and transports the fine grain upwards to the reduction furnace or heater (6).
  • the fine grain of the line (8) can be returned to the container (17) uncooled on the transport path (24) indicated by the broken line.
  • the hot briquettes and coarse fragments first fall through the channel (9) into a cooler (10), where cooling takes place to temperatures in the range from 50 to 400 ° C. and usually at most 200 ° C.
  • the cooler (10) shown only schematically in FIG. 1 can be designed, for example, as a water bath or as a water injection cooler, and cooling with cold gas is also possible.
  • Chilled briquettes and fragments leave the cooler (10) through the channel (11) and are fed to a rotary drum (12).
  • the inside of the drum (12) has axially parallel driving ribs (12a), as is shown schematically in FIG. 3.
  • the material inside is moved intensively, which also causes falling stress, whereby the corners and edges of the body are rounded off and fine-grained abrasion occurs. This rounding-off reduces the risk that fine-grained sieve, which behaves pyrophorically, will form during later transport.
  • the rotary drum (12) can also be designed to cool the material to be treated, e.g. through a cooling water jacket.
  • the material moving in the drum (12) falls through a channel (14) at temperatures of 20 to 150 ° C and usually at most 100 ° C into a screening device (15).
  • briquettes are first sieved through a coarse sieve (15a), which are drawn off in line (16). Fragments and abrasion fall on the second sieve (15b), the relatively coarse fragments having a grain size of, for example, at least 3 to 6 mm being separated off in the line (17) subtracts.
  • Fine grain is removed in line (18) and usually returned together with the fine grain in line (8) to the reduction furnace or heater (6).
  • the briquettes and the fragments of the lines (16) and (17) are placed in an intermediate storage (not shown), storage under inert gas no longer being necessary.
  • an intermediate container (20) or storage is indicated, to which cooled goods are fed from the cooler (10) in the direction of the dashed line (19) when the rotary drum (12) has to be taken out of operation for a certain time for repair purposes .
  • the material from the container (20) or warehouse for further treatment of the drum (12) is given up.
  • all apparatus, containers and lines in which fine grain is present must be kept under protective gas.
  • the material In the cooler (10), the material is placed in a water bath, with adhering fine dust being removed with the cooling water.
  • the rotary drum (12) is cooled with water rinsed onto the outer jacket.
  • the sieve (15a) separates briquettes of at least 12 mm in diameter and the fragments of the line (17) are in the range from 4 to 12 mm.
  • the sieve (7) has openings of 4 mm in diameter.

Landscapes

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

Abstract

L'éponge de fer granuleuse est alimentée dans une presse à rouleaux à des températures comprises entre 600 et 850 °C pour former des briquettes chaudes. On produit une structure en forme de bande en éponge de fer avec des briquettes chaudes ausformées, placées à une certaine distance les unes des autres. En fracassant la structure en forme de bande, on sépare les briquettes chaudes les unes des autres en produisant des fragments de ladite structure. Les briquettes chaudes et au moins une partie des fragments sont refroidies à des températures comprises entre 20 et 400 °C puis, une fois refroidies, elles sont acheminées vers un tambour rotatif dans lequel les briquettes et fragments produisent des particules abrasées à fine granulométrie. Ces particules abrasées sont finalement séparées des briquettes et des fragments car elles sont pyrophores.
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
DE19545985 1995-12-09
DE19545985A DE19545985A1 (de) 1995-12-09 1995-12-09 Verfahren zum Heißbrikettieren von körnigem Eisenschwamm
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 true EP0865505A1 (fr) 1998-09-23
EP0865505B1 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 (13)

* 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
BR0317059B1 (pt) * 2002-12-21 2013-02-05 mÉtodo e equipamento de produÇço de ferro fundido.
CA2583493C (fr) 2004-10-19 2012-08-28 Posco Appareil de fabrication de fers compactes en materiaux reduits comprenant des fers directement et finement reduits et appareil de fabrication de fers fondus au moyen de cet appareil
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
EP2897735A1 (fr) * 2012-09-14 2015-07-29 Velerio, 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
US12000011B2 (en) * 2021-06-22 2024-06-04 Midrex Technologies, Inc. System and method for the production of hot briquetted iron (HBI) containing flux and/or carbonaceous material at a direct reduction plant
ES3045795T3 (en) * 2021-10-07 2025-11-28 Arcelormittal Texas Hbi Llc Induction heating of dri

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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9721840A1 *

Also Published As

Publication number Publication date
US6074456A (en) 2000-06-13
MY115660A (en) 2003-08-30
CA2238383A1 (fr) 1997-06-19
ZA9610347B (en) 1998-06-09
CA2238383C (fr) 2004-05-18
IN190918B (fr) 2003-08-30
MX9804595A (es) 1998-10-31
AR004865A1 (es) 1999-03-10
EA000266B1 (ru) 1999-02-25
DE19545985A1 (de) 1997-06-12
KR100444249B1 (ko) 2004-11-17
AU1191097A (en) 1997-07-03
KR19990072021A (ko) 1999-09-27
ES2131970T3 (es) 1999-08-01
DE59602029D1 (de) 1999-07-01
WO1997021840A1 (fr) 1997-06-19
AU705558B2 (en) 1999-05-27
EA199800543A1 (ru) 1998-12-24
EP0865505B1 (fr) 1999-05-26

Similar Documents

Publication Publication Date Title
EP0865505B1 (fr) Procede de briquetage a chaud d'eponge de fer granuleuse
AT390622B (de) Verfahren und anlage zur herstellung von fluessigem roheisen
EP0576414A1 (fr) Procédé pour la production de la fonte liquide ou des ébauches en acier ainsi que dispositif pour la mise en oeuvre de ce procédé
EP0549656B1 (fr) Procede et installation de recuit de fer en poudre par reduction
DE2146133A1 (de) Verfahren zur direkten Reduktion von metallischen Mineraloxyden
DE102016207720A1 (de) Verfahren und Anlage zur Herstellung von Zement
EP0097292B1 (fr) Procédé et installation de fabrication à chaud de briquettes sans liant
DE3239188C2 (de) Verfahren zum Herstellen von Stahl aus direktreduziertem Eisen
AT404361B (de) Verfahren und vorrichtung zum abkühlen von heissem eisenschwamm
EP0976839B1 (fr) Procédé pour la production de métal à partir de minerais métalliques
EP0526697B1 (fr) Procédé et appareil pour le traitement de déchets de laine minérale
EP0012363B1 (fr) Procédé et dispositif pour la réduction de minerais
EP0908692A2 (fr) Procédé de fonctionnement d'un régénérateur et régénérateur
DE2451775A1 (de) Verfahren zur gewinnung von relativ reinem metall und aus diesem metall bestehendes produkt
DE69129330T2 (de) Verfahren zum Transportieren von Eisenschwamm
DE2826918A1 (de) Verfahren zur verwertung von gummi- und kunststoffabfaellen, insbesondere von altreifen
AT406963B (de) Verfahren zur herstellung von eisenbriketts und/oder kaltem eisenschwamm
DE3713883A1 (de) Verfahren zur herstellung von ferrochrom
EP2841861B1 (fr) Installation et procédé de traitement thermique de matières granulaires et en morceaux
DE3708730C2 (fr)
WO2002090604A2 (fr) Procede et installation pour valoriser des dechets a base d'hydrocarbures et d'oxyde de fer, notamment des boues de battitures, et des fines de charbon
DE3817845A1 (de) Verfahren zur umweltfreundlichen einbindung von staub, der wasserloesliche, umweltgefaehrdende verbindungen enthaelt, aus entstaubungsanlagen von stahlwerken
DE2654914A1 (de) Anlage zur herstellung von granalien aus magnesium oder seinen legierungen mit einem salzzuschlag
EP0877822B1 (fr) Procede de transformation de minerais de fer en fonte brute liquide ou en produits bruts en acier
DE2300889A1 (de) Verfahren und anlage zum aufbereiten von bei metallurgischen prozessen entstehenden staubaehnlichen abfallstoffen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19980709

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE DK ES FR GB IT NL SE

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 19981026

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: METALLGESELLSCHAFT AKTIENGESELLSCHAFT

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE DK ES FR GB IT NL SE

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REF Corresponds to:

Ref document number: 59602029

Country of ref document: DE

Date of ref document: 19990701

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2131970

Country of ref document: ES

Kind code of ref document: T3

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19990817

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991205

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991231

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
BERE Be: lapsed

Owner name: METALLGESELLSCHAFT A.G.

Effective date: 19991231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000831

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001205

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001206

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010701

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20001205

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20010701

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20010113

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20061121

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20061231

Year of fee payment: 11

EUG Se: european patent has lapsed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071206

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071205

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20141211

Year of fee payment: 19

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59602029

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160701