EP2334829B1 - Dispositif pour lisser la surface d'un mélange fritté - Google Patents

Dispositif pour lisser la surface d'un mélange fritté Download PDF

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Publication number
EP2334829B1
EP2334829B1 EP09736372.5A EP09736372A EP2334829B1 EP 2334829 B1 EP2334829 B1 EP 2334829B1 EP 09736372 A EP09736372 A EP 09736372A EP 2334829 B1 EP2334829 B1 EP 2334829B1
Authority
EP
European Patent Office
Prior art keywords
scraper
scrapers
grate carriage
sinter
grate
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.)
Not-in-force
Application number
EP09736372.5A
Other languages
German (de)
English (en)
Other versions
EP2334829A1 (fr
Inventor
Helmut Barowski
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.)
Metso Outotec Oyj
Original Assignee
Outotec Oyj
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 Outotec Oyj filed Critical Outotec Oyj
Priority to PL09736372T priority Critical patent/PL2334829T3/pl
Publication of EP2334829A1 publication Critical patent/EP2334829A1/fr
Application granted granted Critical
Publication of EP2334829B1 publication Critical patent/EP2334829B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • C22B1/16—Sintering; Agglomerating
    • 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
    • C22B1/16—Sintering; Agglomerating
    • C22B1/20—Sintering; Agglomerating in sintering machines with movable grates
    • C22B1/205—Sintering; Agglomerating in sintering machines with movable grates regulation of the sintering process
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
    • F27B21/02—Sintering grates or tables
    • 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
    • F27D3/0033—Charging; Discharging; Manipulation of charge charging of particulate material
    • 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
    • F27D3/12—Travelling or movable supports or containers for the charge
    • F27D3/123—Furnace cars
    • 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
    • F27D99/00—Subject matter not provided for in other groups of this subclass

Definitions

  • This invention relates to a device for smoothing the surface of a sinter mixture in a grate carriage, before the same enters an ignition furnace, by means of at least one scraper between the charging point of the sinter mixture and the ignition furnace.
  • a sinter mixture is produced, which contains iron ores, aggregates and coke as fuel, and via a charging device is charged onto the grate carriages of the sintering machine circulating as an endless belt.
  • the coke contained in the sinter mixture is ignited, and an induced-draft fan disposed below the grate carriage belt draws the burning front through the sinter mixture, so that a sinter cake completely burnt through is obtained at the dumping end of the belt. Due to the heat produced in the process, the fine ores will melt at the surface, so that their grains undergo a firm connection.
  • the finished sinter is supplied to the blast furnace.
  • EP 0 286 381 A2 describes an inclined screen for feeding a raw mix onto a pallet of a sintering apparatus.
  • the sintering mix is fed from a drum feeder onto a sloping plate and adjacent bars extending longitudinally of the sloping plate.
  • the forward end of the pallet becomes the lower portion and the top end portion of the bars has level differences, so that the gaps between the bars are wider at the top edge side.
  • fine particles of the raw mix falling on the bar fall through to the pallet from the basic edge side, and coarse particles of the sintering raw mix fall through to the pallet from the top edge side of the bars.
  • a sift feeding to form a lower coarse particle layer and an upper fine particle layer on the pallet is carried out so that a grain size in a height direction of a raw mixed layer can be optionally formed.
  • Document JP 2002 121820 discloses a method to stabilize an upper layer part of a sintering bed even when it is exposed to circulating waste gas containing much moisture. For that purpose, the solid fuel blending ratio is increased in the upper layer part of the sintering bed and/or the upper layer part is compacted. Irrespective of the chosen way to adapt the upper layer part, material is fed by a drum feeder and falls to sloping chute from which it slides to the sinter bed.
  • Document JP 11 2011355 describes a device to top a groove and to flatten a surface of material prepared for a sintering process.
  • This device includes a screw system of material scrapers which are rotated by revolution changer. To scrape up the material toward a groove, spiral veins are attached in opposition.
  • US 4,648,900 relates to a method for producing a charge of high permeability and stable structure of a sintering bed. The method comprises the steps of compacting the moist material mixture, forming a coherent cake and breaking the cake into pieces of a size suitable or forming a suction-sinter charge. Therefore, each cake is moved down its respective support plate to a spiked role, which disintegrates the cake into pieces of given size. The pieces then fall onto a grate, forming either of two layers, depending on the position of the plate.
  • Document JP 2003 277841 discloses a method for improving the ventilation at the upper part of a sintering raw material layer. This method is based on a plurality of fine holes having a prescribed cross sectional shape and depth. The holes penetrate the upper surface of the upper layer part of the sintering raw material layer. During sintering, a raw material is formed by dispersing these fine holes. The raw material is fed by a drum feeder and falls to sloping chute and onto the sintering bed.
  • this object substantially is solved by a device comprising the features of claim 1.
  • the laterally oscillating movement of the scrapers removes the waves (longitudinal waves) extending substantially in longitudinal direction of the sinter bed surface.
  • a plurality of, correspondingly narrow, scrapers can be suspended in a row one beside the other above the travelling way of the grate carriage distributed across its width.
  • the bearing force of the scrapers substantially is determined by their own weight.
  • the lateral oscillating movement of the scrapers can for instance be effected by means of a cam disk, cam shaft or crank drive and/or pneumatically or hydraulically.
  • the scrapers can be made of a metallic or non-metallic material and can have different shapes.
  • the direction of travel of a grate carriage 1 from a charging point 4 for a sinter mixture to an ignition furnace 2 extends from the left to the right.
  • one or more scrapers 3 is/are suspended in a row one beside the other across the width of the grate carriage 1 so as to reciprocate about an axis of rotation D transverse to the direction of travel of the grate carriage 1 such that they drag along the sinter bed surface when the grate carriage 1 moves through below the same, and thus remove any transverse waves present.
  • the scrapers 3 can be subjected to a lateral oscillating movement, so as to level out longitudinal waves present in the surface of the sinter bed.
  • the laterally oscillating movement of the scrapers 3 can be effected by cam disk, cam shaft or crank drives (not shown in detail) and/or pneumatically or hydraulically.
  • the scrapers 3 are slightly angled or bent at their free end 7, which comes to rest on the respective sinter bed surface, so that the reciprocating movement can easily be initiated and maintained when the grate carriage moves through below the same.
  • the free ends can for instance also be formed like a rake, in order to increase the smoothing effect and make the same more uniform.
  • the scrapers 3 can be mounted at different levels individually or all together and/or be adjusted in their height above the travelling way 5.
  • the bearing force of the scrapers 3 substantially is determined by their own weight. It can, however, be changed by additional weights (not shown).

Landscapes

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

Claims (9)

  1. Appareil pour lisser la surface d'un mélange à fritter dans un chariot à râper (1), avant qu'il n'entre dans un four d'allumage (2), grâce à au moins un grattoir (3) entre la borne de recharge (4) du mélange du lit d'agglomérés et le four d'allumage (2), l'au moins un grattoir (3) est suspendu au-dessus du chemin de passage (5) du chariot à râper (1) de manière à aller et venir dans et contre son sens de déplacement de sorte que le grattoir (3) se traîne le long de la surface du lit d'agglomérés lorsque le chariot à râper (1) passe en-dessous de celui-ci, caractérisé en ce que l'au moins un grattoir (3) peut être sujet à un mouvement d'oscillation latéral.
  2. Appareil selon la revendication 1, caractérisé en ce qu'une pluralité de grattoirs (3) est disposée en rangée les uns à côté des autres au-dessus du chemin de passage (5) du chariot à râper (1) distribué sur toute sa largeur.
  3. Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que la hauteur des grattoirs (3) au-dessus du chemin de passage (6) est ajustable.
  4. Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que la pression des grattoirs (3) est déterminée par leur propre poids.
  5. Appareil selon l'une des revendications précédentes, caractérisé en ce que sur l'au moins un grattoir (3), un ou plusieurs poids supplémentaires peuvent être montés.
  6. Appareil selon l'une des revendications précédentes, caractérisé en ce que le mouvement d'oscillation latéral de l'au moins un grattoir (3) est effectué au moyen d'une came, d'un arbre à came ou d'un entraînement à manivelle, et/ou de manière pneumatique ou hydraulique.
  7. Appareil selon l'une des revendications précédentes, caractérisé en ce que l'au moins un grattoir (3) est fait d'un matériau métallique ou non métallique.
  8. Appareil selon l'une des revendications précédentes, caractérisé en ce que les grattoirs (3) ont différentes formes.
  9. Appareil selon l'une des revendications précédentes, caractérisé en ce que l'au moins un grattoir (3) est angulaire ou courbé (7) à son extrémité libre en direction du passage du chariot à râper (1).
EP09736372.5A 2008-10-09 2009-09-15 Dispositif pour lisser la surface d'un mélange fritté Not-in-force EP2334829B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09736372T PL2334829T3 (pl) 2008-10-09 2009-09-15 Urządzenie do wygładzania powierzchni mieszaniny spiekalniczej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008051063.7A DE102008051063B4 (de) 2008-10-09 2008-10-09 Vorrichtung zum Glätten der Oberfläche einer Sintermischung
PCT/EP2009/006662 WO2010040442A1 (fr) 2008-10-09 2009-09-15 Dispositif pour lisser la surface d'un mélange fritté

Publications (2)

Publication Number Publication Date
EP2334829A1 EP2334829A1 (fr) 2011-06-22
EP2334829B1 true EP2334829B1 (fr) 2013-11-06

Family

ID=41402311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09736372.5A Not-in-force EP2334829B1 (fr) 2008-10-09 2009-09-15 Dispositif pour lisser la surface d'un mélange fritté

Country Status (11)

Country Link
EP (1) EP2334829B1 (fr)
CN (1) CN102177261B (fr)
AR (1) AR073734A1 (fr)
BR (1) BRPI0920427B1 (fr)
DE (1) DE102008051063B4 (fr)
EA (1) EA018399B1 (fr)
ES (1) ES2442022T3 (fr)
PL (1) PL2334829T3 (fr)
UA (1) UA104727C2 (fr)
WO (1) WO2010040442A1 (fr)
ZA (1) ZA201101554B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103421948A (zh) * 2012-05-24 2013-12-04 山东省冶金设计院股份有限公司 改变台车上混合料上部状态的方法和实现该方法的方法
RU2614475C2 (ru) * 2015-09-03 2017-03-28 Открытое акционерное общество "Научно-исследовательский институт металлургической теплотехники" (ОАО "ВНИИМТ") Способ зажигания шихты и горн для его осуществления

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1174995B (de) * 1958-06-18 1964-07-30 Yawata Iron & Steel Co Vorrichtung zum selbstaendigen Regeln der Schichtdicke auf dem Foerderrost einer Sintervorrichtung
US3262770A (en) * 1962-05-11 1966-07-26 Yawata Iron & Steel Co Method of controlling the thickness of a charged raw material layer in dwight-lloyd sintering machine
FR1443771A (fr) * 1965-08-13 1966-06-24 Cerro Corp Procédé et appareil pour alimenter des machines d'agglomération
AT376245B (de) * 1979-11-06 1984-10-25 Voest Alpine Ag Verfahren zum sintern von feinkoernigen eisenerzen
SE434958B (sv) * 1980-12-08 1984-08-27 Bostroem Olle Forfarande och anordning for att pa en rorlig sugsintringsrost eller i en stationer eller rorlig sugsintringspanna astadkomma en charge med hog permeabilitet och stabil struktur
CN1009757B (zh) * 1987-04-06 1990-09-26 新日本制铁株式会社 烧结用混合料的送进设备
AU603879B2 (en) * 1987-04-06 1990-11-29 Nippon Steel Corporation Apparatus and method for feeding sintering raw mix
JP3889142B2 (ja) * 1998-01-20 2007-03-07 Ｊｆｅスチール株式会社 焼結機幅方向の原料通気性均一化装置および焼結鉱の製造方法
JP3721068B2 (ja) * 2000-10-16 2005-11-30 株式会社神戸製鋼所 排ガス循環方式焼結操業方法
JP2003277841A (ja) * 2002-03-22 2003-10-02 Jfe Steel Kk 焼結鉱の製造方法
CN2935056Y (zh) * 2006-08-11 2007-08-15 昆明钢铁股份有限公司 烧结机平料器
CN101187529A (zh) * 2007-12-12 2008-05-28 王梓骥 烧结机摆动筛分布料的方法及装置

Also Published As

Publication number Publication date
BRPI0920427B1 (pt) 2018-01-23
UA104727C2 (uk) 2014-03-11
DE102008051063B4 (de) 2014-08-21
ES2442022T3 (es) 2014-02-07
CN102177261A (zh) 2011-09-07
EP2334829A1 (fr) 2011-06-22
ZA201101554B (en) 2012-05-30
CN102177261B (zh) 2014-01-01
DE102008051063A1 (de) 2010-04-22
BRPI0920427A2 (pt) 2015-12-22
WO2010040442A1 (fr) 2010-04-15
EA018399B1 (ru) 2013-07-30
PL2334829T3 (pl) 2014-04-30
AR073734A1 (es) 2010-11-24
EA201100341A1 (ru) 2011-10-31

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