[go: up one dir, main page]

WO2012067462A2 - Appareil de production de fer fondu et procédé de production de fer fondu l'utilisant - Google Patents

Appareil de production de fer fondu et procédé de production de fer fondu l'utilisant Download PDF

Info

Publication number
WO2012067462A2
WO2012067462A2 PCT/KR2011/008842 KR2011008842W WO2012067462A2 WO 2012067462 A2 WO2012067462 A2 WO 2012067462A2 KR 2011008842 W KR2011008842 W KR 2011008842W WO 2012067462 A2 WO2012067462 A2 WO 2012067462A2
Authority
WO
WIPO (PCT)
Prior art keywords
compacted material
furnace
iron
molten iron
storage tank
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.)
Ceased
Application number
PCT/KR2011/008842
Other languages
English (en)
Korean (ko)
Other versions
WO2012067462A3 (fr
Inventor
신명균
주상훈
김동진
김진태
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.)
Posco Holdings Inc
Original Assignee
Posco Co Ltd
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 Posco Co Ltd filed Critical Posco Co Ltd
Priority to EP11842354.0A priority Critical patent/EP2641981B1/fr
Priority to CN201180055721.7A priority patent/CN103221555B/zh
Publication of WO2012067462A2 publication Critical patent/WO2012067462A2/fr
Publication of WO2012067462A3 publication Critical patent/WO2012067462A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • C21B13/143—Injection of partially reduced ore into a molten bath

Definitions

  • the present invention relates to a molten iron manufacturing apparatus, and to a molten iron manufacturing apparatus capable of stably and efficiently performing molten iron operation by introducing a high temperature compacted material storage tank.
  • molten iron manufacturing apparatus including a multi-stage flow furnace and a melting furnace and directly using powdered or bulky coal and powdered iron ore
  • the formation of a fluidized bed is impossible when a sufficient reducing gas is not supplied from the melting furnace to the flow furnace. The operation itself becomes impossible.
  • the separate iron source should be supplied directly to the melting furnace, and should be a reduced iron in the form of molten iron. Therefore, in the molten iron manufacturing apparatus using the conventional powdery or bulky coal and powdery ore-containing ore directly, the iron-reduced iron is supplied from the outside. Doing.
  • the externally supplied bulk reducing iron is expensive compared to the high-temperature reducing iron produced through the flow furnace, and increases the operating cost of the molten iron manufacturing apparatus.
  • the amount of heat required to increase the temperature compared to the high temperature reducing iron is increased.
  • Increasing the amount of coal required in the smelting furnace ultimately reduces the production of molten iron relative to capacity, thereby lowering the productivity of conventional molten or bulk coal and the molten iron manufacturing apparatus using iron in the form of iron.
  • the present invention is designed to solve the above problems, in the molten iron manufacturing apparatus using a multi-stage flow furnace and a melting furnace, the production of excess high temperature compacted material during normal operation and stored in the compacted material storage tank and stored in abnormal operation after the compacted material It is an object of the present invention to provide a means for improving the stability and efficiency of the molten iron production process by charging the molten metal into a melting furnace.
  • the molten iron manufacturing apparatus for achieving the above object is a multi-stage flow path for reducing the iron iron ore to convert to reduced iron, at least one for producing a high-temperature compacted material by pressing the reduced iron
  • a high temperature compaction apparatus at least one crushing apparatus for crushing the high temperature compacted material to a certain particle size
  • a first conveying apparatus for conveying the crushed high temperature compacted material
  • the conveyed high temperature compacted material in the form of
  • a melting furnace which burns and melts carbon and supplies reducing gas generated in the furnace to the flow reducing furnace.
  • the apparatus for manufacturing molten iron according to the present invention further includes at least one compacted material storage tank for storing a part of the crushed high temperature compacted material.
  • the apparatus may further include a second transfer device for transferring the high temperature compacted material to the compacted material storage tank.
  • a two-way chute is provided at the bottom of the at least one shredding device,
  • the first outlet of the two-way chute supplies the crushed hot compacted material to the first transfer device, and the second outlet of the two-way chute supplies the crushed hot compacted material to the second transfer device.
  • the compacted material reservoir is characterized in that it comprises a nitrogen supply pipe in the lower portion.
  • the compacted material storage tank is characterized in that it comprises a gas discharge pipe at the top.
  • the gas discharge pipe is provided with a pressure regulating valve to maintain the pressure of the compacted storage tank higher than atmospheric pressure.
  • the compacted material storage tank is characterized in that it comprises a level meter to detect the amount of compacted material charged therein.
  • the molten iron manufacturing apparatus further includes a third transfer device, the compacted material storage tank is provided with a discharge device at the lower end to supply the compacted material to the third transfer device, the third transfer device to the first transfer device It is characterized by conveying compacted material.
  • the reducing gas supplied from the melting furnace further includes a carbon dioxide removal device for supplying a reducing gas to the flow furnace.
  • the apparatus may further include a gas circulation cooling device configured to control a temperature of the reducing gas supplied to the flow furnace by branching and cooling a portion of the reducing gas generated in the melting furnace and recirculating the reducing gas supplied from the melting furnace.
  • a gas circulation cooling device configured to control a temperature of the reducing gas supplied to the flow furnace by branching and cooling a portion of the reducing gas generated in the melting furnace and recirculating the reducing gas supplied from the melting furnace.
  • the method for manufacturing molten iron comprises the steps of reducing the iron ore to the reduced iron using a multi-stage flow furnace, and pressing the reduced iron to produce a high temperature compacted material using a compacting agent manufacturing apparatus.
  • the molten iron manufacturing method according to the present invention further comprises the step of transferring a portion of the crushed compacted material to the compacted material storage tank.
  • the method may further include dispensing the crushed compacted material into the charging apparatus or the compacted material storage tank using a two-way chute.
  • the excess high temperature compacted material that exceeds the amount of the high temperature compacted material required for the melting furnace is manufactured.
  • the excess high temperature compacted material is intermittently transferred to the compacted material storage tank by the two-way chute and stored.
  • the compacted material stored in the compacted material storage tank is continuously supplied to the molten furnace through a transfer device. It is done.
  • the excess rate is characterized in that 110% ⁇ 120%.
  • the residence time of the high temperature compacted material in the compacted material storage tank is characterized in that 6 hours to 12 hours.
  • the molten iron manufacturing apparatus by providing a means capable of efficiently supplying high-temperature reduced iron to the melting furnace independently of the reduced iron ore reduction, compaction and charging means in the flow furnace, to prevent the initial operation and operation or equipment failure occurrence
  • a means capable of efficiently supplying high-temperature reduced iron to the melting furnace independently of the reduced iron ore reduction, compaction and charging means in the flow furnace, to prevent the initial operation and operation or equipment failure occurrence
  • the productivity of the molten iron manufacturing apparatus using the powdered or bulky coal and powdered iron ore directly can be improved.
  • FIG. 1 is a view schematically showing the configuration of an apparatus for manufacturing molten iron incorporating a compacted material storage tank capable of storing excess high temperature compacted material according to the present invention.
  • FIG. 1 is a view schematically showing the configuration of a molten iron manufacturing apparatus provided with a surplus high temperature compacted material storage tank 600 according to the present invention.
  • the reduced reducing agent is pressed to produce a high temperature compacted material and crushed to a certain particle size.
  • the crushed high-temperature compacted material is supplied to the first transport device 400 for transport to the charging device by using the two-way chute 700 and the compacted material is supplied to the second transport device 430 provided separately.
  • the charging tank By storing excess compacted material in the charging tank, stable molten iron can be manufactured by supplying the stored compacted material to the melting furnace 500 at the start, stop, operation failure, and equipment failure.
  • the molten iron manufacturing apparatus is a multi-stage flow reduction furnace for reducing the iron ore to convert to reduced iron, at least one high temperature compacted to produce a high-temperature compacted material by pressing the reduced iron
  • the first transfer device 400 for transporting the shredded hot compacted material and the conveyed hot compacted material
  • FIG. 1 illustrates a three-stage flow path 100, but this is exemplary and the number of flow paths 100 may be configured to three or more.
  • the first stage of the flow path 100 preheats the iron ore and the second stage of the flow path 100 pre-reduces the preheated iron ore and three stages of the flow path ( 100) will finally reduce the iron ore.
  • the flow path 100 may be charged with an auxiliary material such as limestone, dolomite, or the like to prevent the powdered iron ore from adhering to the flow path 100 and prevent the reduced iron from breaking inside the melting furnace 500. Can be.
  • an auxiliary material such as limestone, dolomite, or the like to prevent the powdered iron ore from adhering to the flow path 100 and prevent the reduced iron from breaking inside the melting furnace 500. Can be.
  • a bulk reducing iron is manufactured using the agglomeration apparatus 200.
  • the compaction apparatus 200 is prepared by compacting the reduced iron ore by pressing through a pair of rolls.
  • the high temperature compacted material manufactured through the compaction apparatus 200 is crushed to a suitable particle size to be charged into the melting furnace 500 by the crushing apparatus 300 provided under the compaction apparatus 200.
  • the crushed compacted material is supplied to the first transfer device 400 through one outlet of the two-way chute 700 provided under the crusher 300.
  • the high temperature compacted material supplied to the first conveying device 400 is transferred to the charging device 480 for charging the melting furnace 500, charged in the melting furnace 500 continuously from the charging device 480, and in the melting furnace 500.
  • the molten compact is melted by burning coal or bulk coal to produce molten iron.
  • the melting furnace 500 burns powdered or bulky coal by oxygen to melt the compacted material. At this time, reducing gas is generated and supplied to the flow furnace 100 connected to the melting furnace 500 to reduce the reduced or reduced iron. Supply reducing gas.
  • the high temperature compacted material is supplied to the second transfer device 430 provided below the two-way chute 700 through another discharge port provided in the two-way chute 700 and the high temperature through the second transfer device 430.
  • the compacted material is transferred to and stored in the compacted material storage tank 600.
  • a two-way chute 700 is provided at the bottom of the at least one shredding device 300, and the first outlet of the two-way chute 700 is shredded by the first transfer device 400.
  • the compacted material is supplied, and the second outlet of the two-way chute 700 supplies the crushed high-temperature compacted material to the second transfer device 430.
  • Each outlet of the two-way chute 700 is provided with a valve, so that the conveying direction of the hot compacted material can be selected as the first conveying device 400 or the second conveying device 430.
  • the compacted material storage tank 600 includes a nitrogen supply pipe 610 at the bottom and a gas discharge pipe 630 at the top.
  • the gas discharge pipe 630 may be provided with a pressure control valve 635 to maintain the pressure of the compacted material storage tank 600 higher than atmospheric pressure.
  • the compacted material storage tank 600 is provided with a nitrogen supply pipe 610 at the lower side to supply nitrogen and discharge gas through the gas discharge pipe 630 provided at the upper side, the pressure control valve to the gas discharge pipe 630 635 may be configured to minimize the inflow of air from the outside by maintaining the pressure of the compacted material storage tank 600 higher than the atmospheric pressure.
  • the compacted material storage tank 600 is characterized in that it comprises a level meter to detect the amount of compacted material charged therein.
  • a level meter to detect the amount of compacted material charged therein.
  • the amount of the high temperature compacted material stored in the high temperature compacted material storage tank 600 may be detected.
  • the molten iron manufacturing apparatus further includes a third transfer device 450, the compacted material storage tank 600 is provided with a discharge device 660 at the bottom to supply the compacted material to the third transfer device 450
  • the third transfer device 450 is characterized in that for transferring the compacted material to the first transfer device 400.
  • the apparatus for manufacturing molten iron according to the present invention cools the gas discharged from the multi-stage flow path 100 through a collecting device and then branches and compresses a part of the molten metal to remove carbon dioxide, and then discharges the high temperature from the melting furnace 500.
  • the exhaust gas reformer 800 may be further included to be mixed with the reducing gas so as to further supply the reducing gas to the multi-stage flow path 100.
  • the high temperature reducing gas discharged from the melting furnace 500 for thermal decomposition of tar generated in the coal or bulk coal used in the melting furnace 500 is maintained at 1,000 °C or more, and the temperature of the high temperature reducing gas It is necessary to lower to 700 °C ⁇ 800 °C level required for the multi-stage flow path (100).
  • the carbon dioxide removal gas at room temperature supplied from the exhaust gas reformer 800 and the high temperature reducing gas discharged from the melting furnace 500 may be mixed to cool the temperature first.
  • the hot reducing gas mixed with the carbon dioxide removal gas is branched, cooled in the collector device, compressed and then mixed with the hot reducing gas again to the temperature of the reducing gas supplied to the multi-stage flow path (100).
  • the gas circulation cooling apparatus 900 may be further cooled.
  • the method for manufacturing molten iron comprises the steps of reducing the iron ore to the ring reducing iron by using the multi-stage flow path 100, and compressing the ring reducing iron using a compacting agent manufacturing apparatus to produce a high temperature compacted material. Manufacturing, crushing the high temperature compacted material using the crushing device 300, transferring the crushed compacted material to a charging device, and charging the compacted material from the charging device to the melting furnace 500 and separating powder Or burning and melting the bulk coal.
  • the molten iron manufacturing method further includes transferring a portion of the crushed compacted material to the compacted material storage tank 600.
  • the method may further include distributing the crushed compacted material to the charging apparatus or the compacted material storage tank 600 using the two-way chute 700.
  • the continuous molten iron production is normally performed, that is, the high temperature compacted material required for the melting furnace 500 through the flow furnace 100, compacted material manufacturing apparatus and shredding device 300 can be produced, the melting furnace An excess of high temperature compacted material is produced in excess of the amount of high temperature compacted material required for 500, and the excess high temperature compacted material is removed from the shredding apparatus 300 by the action of the two-way chute 700. Intermittently discharged to the transfer device can be transferred to the compacted material storage tank 600 and stored.
  • the molten iron manufacturing method is an abnormal operation situation, that is, when the high temperature compacted material required for the melting furnace 500 through the flow path 100, compacted material manufacturing apparatus and shredding device 300, the compacted The compacted material stored in the sieve reservoir 600 is discharged to the third transfer device 450 through the discharge device 660 and the third transfer device 450 transfers the discharged compacted material to the first transfer device 400.
  • the high temperature compacted material required for the melting furnace 500 can be continuously supplied.
  • the production of hot compacted material by the flow furnace 100, the compacting device 200 and the shredding device 300 should exceed the high temperature compacted material requirements of the melting furnace 500. .
  • the ratio of the high temperature compacted mass produced by the flow furnace 100, the compaction apparatus 200 and the shredding apparatus 300 to the high temperature compacted mass required for the melting furnace 500 is defined as a facility capacity excess ratio as follows. when doing,
  • the facility capacity excess rate may be 110% to 120%.
  • the above-mentioned capacity excess ratio ranges from 80% to 90% of the molten iron manufacturing apparatus which directly uses powdered or bulky coal and powdered iron ore. It is based on what comes early.
  • the reducing gas required in the flow path 100 to produce the high temperature compacted material may be additionally supplied through a carbon dioxide removal device.
  • the residence time of the high temperature compacted material in the compacted material storage tank 600 may be 6 hours to 12 hours.
  • the storage time of the high temperature compacted material in the compacted material storage tank 600 may be too long.
  • the high temperature compacted material may be cooled and differentiated, and as a result, an abnormal situation may occur.
  • the hot compacted material supplied to the melting furnace 500 may be poor.
  • a part of the high temperature compacted material under the high temperature compacted material storage tank 600 is discharged through the discharge device 660 and the amount of the discharged high temperature compacted material is flow path 100. ), It is preferable to periodically replace the new hot compacted material produced and discharged through the compaction apparatus 200 and the shredding apparatus 300.
  • the series of substitution processes as described above may maintain the residence time in the compacted material storage tank 600 of the high temperature compacted material and the residence time is preferably set to 6 hours to 12 hours.

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)

Abstract

Appareil et procédé de production de fer fondu. L'appareil de production de fer fondu selon la présente invention comprend : un four à lit fluidisé multi-étage pour convertir des fines de minerai de fer en fines de fer réduites par réduction ; au moins une unité de compactage haute température pour préparer un fer compacté haute température par compression des fines de fer réduites ; au moins une unité de concassage pour concasser le fer compacté haute température en vue d'obtenir une certaine taille de particules ; une première unité de transport pour transporter le fer compacté haute température concassé ; et un four de fusion pour faire fondre le fer compacté haute température concassé par combustion de fines et de gaillettes de charbon, et pour alimenter en gaz réducteur, qui est généré dans le four de fusion, un four de réduction à lit fluidisé. De plus, l'appareil comprend, en outre, au moins une unité de stockage de fer compacté pour stocker une partie du fer compacté qui a été concassé. Selon la présente invention, un fer fondu peut être fabriqué de manière stable et efficace.
PCT/KR2011/008842 2010-11-19 2011-11-18 Appareil de production de fer fondu et procédé de production de fer fondu l'utilisant Ceased WO2012067462A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11842354.0A EP2641981B1 (fr) 2010-11-19 2011-11-18 Procédé de production de fer fondu
CN201180055721.7A CN103221555B (zh) 2010-11-19 2011-11-18 一种铁水制备装置及利用该装置的铁水制备方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20100115554A KR101187851B1 (ko) 2010-11-19 2010-11-19 용철제조장치 및 이를 이용한 용철제조방법
KR10-2010-0115554 2010-11-19

Publications (2)

Publication Number Publication Date
WO2012067462A2 true WO2012067462A2 (fr) 2012-05-24
WO2012067462A3 WO2012067462A3 (fr) 2012-08-23

Family

ID=46084546

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2011/008842 Ceased WO2012067462A2 (fr) 2010-11-19 2011-11-18 Appareil de production de fer fondu et procédé de production de fer fondu l'utilisant

Country Status (4)

Country Link
EP (1) EP2641981B1 (fr)
KR (1) KR101187851B1 (fr)
CN (2) CN104694687A (fr)
WO (1) WO2012067462A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101451405B1 (ko) * 2012-11-30 2014-10-15 주식회사 포스코 괴성광의 경화장치 및 이를 구비한 용철 제조장치
KR101417652B1 (ko) * 2013-06-24 2014-07-08 주식회사 포스코 유동로의 가스정체층 형성 방지장치 및 방법
KR101550893B1 (ko) * 2013-12-10 2015-09-18 주식회사 포스코 용철제조방법 및 용철제조장치
DE102014111906A1 (de) * 2014-08-20 2016-02-25 Maschinenfabrik Köppern Gmbh & Co. Kg Anlage zum Heißbrikettieren
EP3216880B1 (fr) * 2014-11-06 2019-06-19 Posco Appareil de fabrication de fer en fusion composite
KR101660696B1 (ko) * 2015-09-08 2016-09-28 주식회사 포스코 타르 분해 장치, 용철 제조 장치 및 용철 제조 방법

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86101529A (zh) * 1983-09-14 1988-02-17 新西兰钢铁公司 铁水的生产
JP2002241819A (ja) 2001-02-09 2002-08-28 Nkk Corp 微粒鉱石吹込装置
CN1325666C (zh) * 2002-12-21 2007-07-11 Posco公司 制造铁水的设备及其使用方法
KR101022447B1 (ko) * 2002-12-21 2011-03-15 주식회사 포스코 분환원철 및 소성부원료를 고온 괴성화하는 용철제조장치및 그 용철제조방법
KR101118285B1 (ko) * 2004-10-19 2012-03-20 주식회사 포스코 분환원철 함유 환원체의 괴성체 제조 장치 및 이를 이용한용철제조장치
KR101197694B1 (ko) * 2005-09-12 2012-11-05 주식회사 포스코 분환원철 함유 괴성체 제조 장치 및 이를 구비한용철제조장치
KR100939268B1 (ko) * 2006-08-11 2010-01-29 주식회사 포스코 용철제조장치 및 이를 이용한 용철제조방법
KR100797824B1 (ko) * 2006-12-18 2008-01-24 주식회사 포스코 분상 또는 괴상의 일반탄 및 분상의 철함유 광석을 직접사용하는 용철제조장치
CN101260448B (zh) * 2008-04-24 2010-09-29 钢铁研究总院 一种直接使用精矿粉的熔融还原炼铁方法
AT508953B1 (de) * 2009-10-16 2011-07-15 Siemens Vai Metals Tech Gmbh Verfahren und vorrichtung zur chargierung in ein einschmelzaggregat

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None
See also references of EP2641981A4

Also Published As

Publication number Publication date
EP2641981A4 (fr) 2017-08-30
CN104694687A (zh) 2015-06-10
CN103221555A (zh) 2013-07-24
KR20120054262A (ko) 2012-05-30
EP2641981A2 (fr) 2013-09-25
EP2641981B1 (fr) 2019-06-05
CN103221555B (zh) 2015-07-15
WO2012067462A3 (fr) 2012-08-23
KR101187851B1 (ko) 2012-10-04

Similar Documents

Publication Publication Date Title
WO2012067462A2 (fr) Appareil de production de fer fondu et procédé de production de fer fondu l'utilisant
KR101324254B1 (ko) 풀 옥시즌 과수소 석탄가스 제철방법 및 그 장치
CN111363591B (zh) 一种利用磷煤加压气化还原磷矿石的联产黄磷和合成气的装置和方法
WO2017111490A1 (fr) Dispositif de fabrication de fonte liquide et procédé de fabrication de fonte liquide utilisant celui-ci
WO2012086961A4 (fr) Procédé pour fabriquer des briquettes de charbon partiellement carbonisées, appareil pour fabriquer des briquettes de charbon partiellement carbonisées, et appareil pour fabriquer du fer fondu
KR20180030268A (ko) 압분체 제조 방법 및 장치
KR100584732B1 (ko) 일반탄을 이용하는 용철제조공정에서의 폐기물 재활용방법
WO2014098300A1 (fr) Procédé et dispositif de production de fer réduit
KR101607254B1 (ko) 복합 용철 제조 장치
RU2294967C2 (ru) Установка для производства расплавленного чугуна с сушкой и транспортировкой железных руд и добавок и способ производства с ее использованием
WO2020111598A1 (fr) Procédé et appareil de fabrication d'une solution de sulfate de lithium à partir de minerai contenant du lithium
CN1123330A (zh) 一种复合炉装置
CN110144428A (zh) 一种含硼铁精矿悬浮还原-熔炼分离硼铁的装置及方法
WO2012091407A2 (fr) Appareil pour la fabrication d'acier fondu et procédé pour la fabrication d'acier fondu l'utilisant
CN115896379B (zh) 一种利用废钢进行炼铁的欧冶炉系统的使用方法
WO2013100333A1 (fr) Dispositif de réduction de poudre de minerai de fer, dispositif de production de fer fondu et de fer réduit et procédé correspondant
CN102575304A (zh) 一种还原铁制备装置及其制备方法
KR102083539B1 (ko) 용선 제조 설비 및 용선 제조 방법
CN102333893A (zh) 制备液态金属的方法
KR20010065011A (ko) 용융선철제조장치 및 이를 이용한 용융선철 제조방법
CN101578378A (zh) 回收铁粉的设备和包括该设备的制造铁水的设备
KR20110018183A (ko) 환원철 제조 장치 및 방법과 이를 이용한 용철 제조 장치 및 방법
CN116179776A (zh) 基于燃料和电能协同处理含铁固废物的竖炉系统和方法
KR100840232B1 (ko) 용철제조장치 및 방법
KR20120094928A (ko) 용융 유닛 내측으로의 장입 공정 및 장치

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11842354

Country of ref document: EP

Kind code of ref document: A2

WWE Wipo information: entry into national phase

Ref document number: 2011842354

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE