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WO2018004070A1 - Appareil permettant de fabriquer du fer fondu et procédé de fabrication de fer fondu l'utilisant - Google Patents

Appareil permettant de fabriquer du fer fondu et procédé de fabrication de fer fondu l'utilisant Download PDF

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Publication number
WO2018004070A1
WO2018004070A1 PCT/KR2016/011492 KR2016011492W WO2018004070A1 WO 2018004070 A1 WO2018004070 A1 WO 2018004070A1 KR 2016011492 W KR2016011492 W KR 2016011492W WO 2018004070 A1 WO2018004070 A1 WO 2018004070A1
Authority
WO
WIPO (PCT)
Prior art keywords
furnace
iron
molten iron
reduction furnace
molten
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/KR2016/011492
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English (en)
Korean (ko)
Inventor
손상한
김완호
장동석
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
Publication of WO2018004070A1 publication Critical patent/WO2018004070A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0033—In fluidised bed furnaces or apparatus containing a dispersion of the material
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0073—Selection or treatment of the reducing gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/122—Reduction of greenhouse gas [GHG] emissions by capturing or storing CO2

Definitions

  • the present invention relates to a molten iron manufacturing apparatus and a method for manufacturing molten iron using the same, and more particularly, to an apparatus for producing molten iron using by-product gas generated in a steelmaking process, and a molten iron manufacturing method using the same.
  • the main components of flue gas produced in the manufacture of molten iron include CO, H 2 , CO 2 , H 2 O, N 2, etc.
  • CO and H 2 gas can be used as a reducing agent or a heat source that generates heat.
  • Heavy N 2 components are difficult to separate and are used for exhaust gas power generation.
  • an apparatus for manufacturing molten iron and a method for manufacturing molten iron using the same. More specifically, the present invention provides an apparatus for producing molten iron using by-product gas generated in a steelmaking process, and a method for manufacturing molten iron using the same.
  • molten iron manufacturing apparatus is a molten gas furnace for the production of molten iron by reducing iron and the bulk carbon material, connected to the molten gas furnace, to produce iron ore by using reduced gas discharged from the molten gasifier And a reduction furnace for providing reduced iron to a molten gasifier, a blast furnace for charging iron ore and coke to produce molten iron, connected to a reduction furnace and a blast furnace, and a carbon dioxide remover for removing carbon dioxide from exhaust gas of the reduction furnace and blowing into the blast furnace. do.
  • the reduction furnace may be a fixed bed type reduction furnace.
  • the reduction furnace may be a fluidized bed reduction furnace.
  • the reduction furnace may be a reduction furnace consisting of two to four stages.
  • Ferrous iron ore is charged into the reduction furnace, and a reduced iron molding machine is further installed between the reducing furnace and the molten gasifier, and the reduced iron molding machine forms the reduced iron discharged from the reducing furnace to be produced as a bulky reduced iron and can be provided to the molten gasifier. have.
  • the carbon dioxide remover may be configured to remove carbon dioxide physically or chemically.
  • the carbon dioxide remover may blow the exhaust gas from which carbon dioxide is removed to the top or the bottom of the blast furnace.
  • Melting gasification furnace is formed with a tuyere may be oxygen is blown through the tuyere.
  • Pulverized coal or water-containing gas may be further blown into the tuyeres of the melt gasification furnace.
  • the blast furnace may be formed with air vents for blowing air, and the air may be blown through the air vents.
  • a method for manufacturing reduced iron by charging iron ore into a reducing furnace, preparing reduced iron and agglomerated carbonaceous material into a melting gasifier, and manufacturing molten iron, and supplying the reducing gas generated to the reducing furnace And removing carbon dioxide from the exhaust gas generated in the reduction furnace and blowing the carbon dioxide into the blast furnace and charging iron ore and coke into the blast furnace to produce molten iron.
  • the reduction furnace may be a fixed bed type reduction furnace.
  • the reduction furnace may be a fluidized bed reduction furnace.
  • the reduction furnace may consist of two to four stages.
  • Carbon dioxide may be removed by physical or chemical methods in the step of removing carbon dioxide from the flue gas generated in the reduction furnace and blowing into the blast furnace.
  • the exhaust gas from which carbon dioxide has been removed may be blown into the upper or lower portion of the blast furnace.
  • It may further comprise the step of blowing oxygen through the tuyere to the melt gasifier.
  • More dust can be blown into the tuyere or pulverized gas.
  • the method may further include blowing air through the blast furnace blast furnace.
  • the use of coal in the molten iron manufacturing process can be reduced by separating carbon dioxide from exhaust gas of a reduction furnace in which carbon dioxide is easily separated and re-injecting the gas into the blast furnace.
  • the energy efficiency is increased to significantly reduce the carbon dioxide generated during the manufacturing of molten iron Do.
  • FIG. 1 is a schematic view of a molten iron manufacturing apparatus according to an embodiment of the present invention.
  • FIG. 2 is a schematic view of a molten iron manufacturing apparatus according to another embodiment of the present invention.
  • first, second, and third are used to describe various parts, components, regions, layers, and / or sections, but are not limited to these. These terms are only used to distinguish one part, component, region, layer or section from another part, component, region, layer or section. Accordingly, the first portion, component, region, layer or section described below may be referred to as the second portion, component, region, layer or section without departing from the scope of the invention.
  • FIG. 1 schematically shows a molten iron manufacturing apparatus according to an embodiment of the present invention.
  • the structure of the molten iron manufacturing apparatus 100 of FIG. 1 is merely for illustrating the present invention, and the present invention is not limited thereto. Therefore, the molten iron manufacturing apparatus 100 can be variously modified.
  • the molten iron manufacturing apparatus 100 includes a melt gasifier 10, a reduction furnace 22, a blast furnace 50, and a carbon dioxide remover 60.
  • a melt gasifier 10 As shown in FIG. 1, the molten iron manufacturing apparatus 100 includes a melt gasifier 10, a reduction furnace 22, a blast furnace 50, and a carbon dioxide remover 60.
  • other devices may be included as needed.
  • Reduction furnace 22 is a fluidized bed reduction furnace, receives a reducing gas from the iron ore and the melting gasifier 10 to form a fluidized bed therein.
  • the reduction furnace 22 may be formed in multiple stages for reduction efficiency, and specifically, may be made of two to four stages. As shown in Figure 1 may be made of four stages.
  • the maximum temperature of the reduction furnace 22 is 1000 degrees C or less, and the pre-reduction rate becomes about 60 to 80%.
  • FIG. 2 shows an example in which the reduction furnace 20 is composed of a fixed-bed reduction reactor. Only the reduction furnace 20 is changed to the fixed-bed reduction furnace 20, the rest of the configuration is the same as FIG.
  • Reduction furnace 22 may be loaded with iron ore or iron ore.
  • a reduced iron molding machine 40 may be further installed between the reduction furnace 22 and the melt gasifier 10.
  • the reduced iron molding machine 40 may be formed of a reduced iron in the form of powder reduced iron discharged from the reduction furnace 22. Mass produced reduced iron is provided to the melt gasifier (10).
  • the molten gas furnace 10 is charged with reduced iron and agglomerated carbonaceous material to produce molten iron. Since the reduced iron and the bulk carbonaceous material are charged into the melt gasifier 10, a coal filling layer is formed inside the melt gasifier 10.
  • the lumped carbonaceous material means a lumped carbonaceous material including coal briquettes and coke, and is a concept distinguished from powdered coal.
  • the dome part is formed in the upper part of the melt gasifier 10. That is, a wider space is formed than the other parts of the melt gasifier 10, where a high temperature reducing gas exists.
  • the heat generated by the pyrolysis reaction of the bulk coal ash moves to the lower portion of the melt gasifier 10 and exothermicly reacts with oxygen supplied through the tuyere 30.
  • a large amount of gas generated in the lower portion of the melt gasifier 10 and the reduced iron supplied from the reducing furnace 22 can pass through the coal-filled layer in the melt gasifier 10 more easily and uniformly. Can be.
  • the outer wall of the melt gasifier 10 is provided with a vent port 30 to blow in oxygen.
  • Oxygen is blown into the coal packed bed to form a combustion zone.
  • the bulk coal ash may be burned in a combustion zone to generate a reducing gas.
  • Not only oxygen but also pulverized coal or water-containing gas may be blown through the tuyere 30 of the melt gasifier 10.
  • a water-containing gas refers to a gas containing some hydrogen such as natural gas.
  • molten iron may be manufactured by melting the reduced iron by the heat of combustion of the bulk carbonaceous material. Some slag is included in molten iron.
  • a reducing gas is generated in the melting gasifier 10, and the reducing gas includes CO, H 2 gas generated by volatile fraction of the bulk carbonaceous material and carbon and pure oxygen. This reducing gas is supplied to the reduction furnaces 20 and 22 described above and used to reduce iron ore to reduced iron.
  • the reducing gas is supplied to the reduction furnaces 20 and 22 to reduce the iron ore to reduced iron and then discharged from the reduction furnaces 20 and 22 as exhaust gas.
  • This flue gas will mainly contain CO, H 2 , CO 2 and H 2 O.
  • Removing CO 2 from the exhaust gas and the carbon dioxide remover 60 is provided to supply the exhaust gas to remove the CO 2 in the blast furnace. 1 and 2, the carbon dioxide remover 60 is installed by connecting the reduction furnace 20, 22 and the blast furnace 50.
  • the carbon dioxide remover 60 may be used without particular limitation as long as the carbon dioxide remover 60 is configured to remove carbon dioxide from the exhaust gas.
  • the carbon dioxide remover 60 may be configured to contact the exhaust gas and the carbon dioxide absorbing liquid.
  • an amine solution or a carbonate solution can be used as the carbon dioxide absorbing liquid.
  • the carbon dioxide remover 60 blows exhaust gas from which carbon dioxide has been removed into the blast furnace 50.
  • the carbon dioxide remover 60 may blow the exhaust gas from which carbon dioxide has been removed to the upper or lower portion of the blast furnace 50.
  • the upper portion of the blast furnace 50 means the position where the iron ore and coke is charged
  • the lower means the tuyere 55 of the blast furnace 50 is blown air.
  • the exhaust gas from which carbon dioxide is removed mainly includes CO and H 2 gas, and by injecting the same into the blast furnace 50, it may be usefully used as a heat source for generating a reducing agent and heat in the blast furnace 50.
  • the energy efficiency in the blast furnace 50 is improved, and the carbon utilization rate is improved.
  • the amount of CO 2 generated in the molten iron manufacturing process is reduced.
  • the exhaust gas from which carbon dioxide is removed through the carbon dioxide remover 60 may be preheated and blown into the blast furnace 50.
  • the blast furnace 50 is charged with iron ore and coke to produce molten iron.
  • the blast furnace 50 is distinguished from the molten gasifier 10 described above in that coke is charged to produce molten iron that is not subjected to a separate reduction process and coke, which is not a general bulk coal material.
  • molten iron can be manufactured by reducing and melting iron ore by the heat of combustion of coke.
  • exhaust gas from which carbon dioxide has been removed from the carbon dioxide remover 60 is blown in and used as a reducing agent and a heat source, the amount of charged coke can be reduced, and the amount of CO 2 generated is also reduced.
  • the lower part of the blast furnace 50 is formed with air vents 55 for blowing air, and the air is blown through the air vents 55.
  • the air vent 55 of the blast furnace 50 includes general air containing a large amount of nitrogen gas
  • the exhaust gas of the blast furnace 50 contains a large amount of nitrogen gas.
  • the exhaust gas of the blast furnace 50 mainly includes CO, H 2 , N 2 , CO 2 and the like.
  • the blast furnace 55 of the blast furnace 50 may be further blown pulverized coal or water-containing gas in addition to air.
  • a method for manufacturing reduced iron by charging iron ore into a reducing furnace (S10), charging reduced iron and agglomerated carbonaceous material into a molten gasifier to manufacture molten iron, and reducing the reducing gas generated Supplying to the furnace (S20), removing the carbon dioxide from the exhaust gas generated in the reducing furnace and blowing into the blast furnace (S30) and the step of charging the iron ore and coke into the blast furnace to manufacture molten iron (S40).
  • the molten iron manufacturing method according to an embodiment of the present invention may further include other steps as necessary in addition to the above-described steps.
  • the above-described steps S10 to S40 are not listed in time series, and may be performed independently or simultaneously with each step. Hereinafter, each step will be described in detail.
  • First step (S10) is to charge iron ore into a reducing furnace to produce reduced iron.
  • the iron ore charged in the reduction furnace is pre-dried and then made of reduced iron while passing through the reduction furnace.
  • the reduction furnace is a fluidized-bed reduction reactor 22, which receives the reducing gas from the ferrous ore and the melt gasification furnace to form a fluidized bed therein.
  • the reduction furnace may be formed in multiple stages for reduction efficiency, and specifically, may be made of two to four stages. As shown in Figure 1 may be made of four stages.
  • the maximum temperature of the reduction furnace is 1000 ° C. or lower, and the pre-reduction rate is about 60 to 80%.
  • FIG. 2 shows an example in which the reduction furnace is composed of a fixed bed type reduction furnace 20. Only the reduction furnace was changed to the fixed-bed reduction furnace 20, the rest of the configuration is the same as FIG.
  • Iron ore or iron ore may be charged to the reduction furnace.
  • the method may further include forming reduced iron discharged from the reduction furnace to form a reduced reduced iron and providing the molten gasifier. The mass of reduced iron thus produced is provided to a melt gasifier.
  • step S20 the reduced iron and the bulk carbonaceous material are charged into a melting gasifier to manufacture molten iron, and the reducing gas generated is supplied to the reducing furnace. Since the reduced iron and the bulk carbonaceous material are charged into the melt gasifier 10, a coal filling layer is formed inside the melt gasifier 10.
  • the lumped carbonaceous material means a lumped carbonaceous material including coal briquettes and coke, and is a concept distinguished from powdered coal.
  • the dome part is formed in the upper part of the melt gasifier 10. That is, a wider space is formed than the other parts of the melt gasifier 10, where a high temperature reducing gas exists.
  • the heat generated by the pyrolysis reaction of the bulk coal ash moves to the lower portion of the melt gasifier 10 and exothermicly reacts with oxygen supplied through the tuyere 30.
  • a large amount of gas generated in the lower portion of the melt gasifier 10 and the reduced iron supplied from the reducing furnace 22 can pass through the coal-filled layer in the melt gasifier 10 more easily and uniformly. Can be.
  • the method may further include injecting oxygen through the tuyere 30 of the melt gasifier 10.
  • Oxygen is blown into the coal packed bed to form a combustion zone.
  • the bulk coal ash may be burned in a combustion zone to generate a reducing gas.
  • the pulverized coal or water-containing gas may be further blown into the tuyere 30 of the molten gasifier 10.
  • a water-containing gas refers to a gas containing some hydrogen such as natural gas.
  • molten iron may be manufactured by melting the reduced iron by the heat of combustion of the bulk carbonaceous material. Some slag is included in molten iron.
  • a reducing gas is generated in the melting gasifier 10, and the reducing gas includes CO, H 2 gas generated by volatile fraction of the bulk carbonaceous material and carbon and pure oxygen. This reducing gas is supplied to the reduction furnaces 20 and 22 described above and used to reduce iron ore to reduced iron.
  • step S20 a reducing gas is generated in the melting gasifier 10, and the reducing gas includes CO, H 2 gas generated by volatile fraction of the bulk coal ash and carbon and pure oxygen. This reducing gas will be used to reduce the iron ore to the reduced iron described above (S10).
  • step (S30) is to remove the carbon dioxide in the exhaust gas generated in the reduction furnace and blow into the blast furnace.
  • the reducing gas is supplied to the reduction furnaces 20 and 22 to reduce the iron ore to reduced iron and then discharged from the reduction furnaces 20 and 22 as exhaust gas.
  • This flue gas will mainly contain CO, H 2 , CO 2 and H 2 O.
  • Step (S30) can be used without particular limitation if it is a method for removing the carbon dioxide of the exhaust gas using a physical or chemical method.
  • the exhaust gas may be contacted with a carbon dioxide absorbing liquid to remove carbon dioxide.
  • an amine solution or a carbonate solution can be used as the carbon dioxide absorbing liquid.
  • the exhaust gas from which carbon dioxide has been removed is blown into the blast furnace 50.
  • the exhaust gas from which carbon dioxide has been removed may be blown into the upper or lower portion of the blast furnace 50.
  • the upper portion of the blast furnace 50 means the position where the iron ore and coke is charged
  • the lower means the tuyere 55 of the blast furnace 50 is blown air.
  • the exhaust gas from which carbon dioxide is removed mainly includes CO and H 2 gas, and is blown into the blast furnace 50, so that it may be usefully used as a heat source for generating a reducing agent and heat in step S40 to be described later. This improves the energy efficiency in step S40, the carbon utilization is improved. In addition, the amount of CO 2 generated in the entire molten iron manufacturing process is reduced.
  • the exhaust gas from which carbon dioxide has been removed through step S30 may be preheated and blown into the blast furnace 50.
  • step S40 the iron ore and coke is charged to the blast furnace to produce molten iron.
  • the blast furnace 50 is distinguished from the molten gasifier 10 described above in that coke is charged to produce molten iron that is not subjected to a separate reduction process and coke, which is not a general bulk coal material.
  • molten iron can be manufactured by reducing and melting iron ore by the heat of combustion of coke.
  • the exhaust gas from which carbon dioxide has been removed is blown in step S30 and utilized as a reducing agent and a heat source, the loading amount of coke can be reduced, and the amount of CO 2 generated is also reduced.
  • the method may further include blowing air through the tuyere 55 of the blast furnace 50.
  • the air vent 55 of the blast furnace 50 includes general air containing a large amount of nitrogen gas
  • the exhaust gas of the blast furnace 50 contains a large amount of nitrogen gas.
  • the exhaust gas of the blast furnace 50 mainly includes CO, H 2 , N 2 , CO 2 and the like.
  • the blast furnace 55 of the blast furnace 50 may be further blown pulverized coal or water-containing gas in addition to air.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacture Of Iron (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

L'invention concerne un appareil permettant de fabriquer du fer fondu et le procédé de fabrication de fer fondu l'utilisant. Selon un mode de réalisation de la présente invention, l'appareil permettant de fabriquer du fer fondu comprend : un four gazéificateur de fusion dans lequel du fer réduit et un matériau de charbon en morceaux sont chargés de manière à fabriquer du fer fondu ; un four de réduction relié au four gazéificateur de fusion, fabriquant du fer réduit à partir de minerai de fer à l'aide d'un gaz réducteur devant être évacué du four gazéificateur de fusion, et fournissant le fer réduit au four gazéificateur de fusion ; un haut fourneau dans lequel du minerai de fer et du coke sont chargés de manière à fabriquer du fer fondu ; et un dispositif d'élimination du dioxyde de carbone relié au four de réduction et au haut fourneau, éliminant le dioxyde de carbone du gaz d'échappement du four de réduction et soufflant ce dernier dans le haut fourneau.
PCT/KR2016/011492 2016-06-28 2016-10-13 Appareil permettant de fabriquer du fer fondu et procédé de fabrication de fer fondu l'utilisant Ceased WO2018004070A1 (fr)

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KR1020160080850A KR20180001860A (ko) 2016-06-28 2016-06-28 용철 제조장치 및 이를 이용한 용철 제조방법
KR10-2016-0080850 2016-06-28

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WO2018004070A1 true WO2018004070A1 (fr) 2018-01-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110669891A (zh) * 2019-08-29 2020-01-10 内蒙古赛思普科技有限公司 一种熔融还原炉煤气循环利用装置及方法
EP4516382A4 (fr) * 2022-04-27 2025-11-12 Lowcarbon Co Ltd Capture de dioxyde de carbone, utilisation de ressources en carbone et système de production d'hydrogène pour aciérie

Families Citing this family (2)

* Cited by examiner, † Cited by third party
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CN112673254B (zh) 2018-10-02 2023-06-23 霍尼韦尔国际公司 具有延伸条带的气体检测器校准盖
KR102548309B1 (ko) * 2020-12-18 2023-06-26 주식회사 포스코 이산화탄소 배출 저감형 용철 제조장치 및 그 제조방법

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KR100286688B1 (ko) * 1998-12-24 2001-11-22 이구택 용융선철제조장치 및 이를 이용한 용융선철제조방법
KR20060047450A (ko) * 2004-07-30 2006-05-18 주식회사 포스코 일반탄 및 분철광석을 직접 사용하는 용융가스화로에 미분탄재를 취입하는 용철제조장치 및 그 용철제조방법
KR101318385B1 (ko) * 2011-11-17 2013-10-15 주식회사 포스코 고로의 연소대 미연소 퇴적층 제거 장치 및 제거 방법
KR101429636B1 (ko) * 2012-08-21 2014-08-13 주식회사 포스코 용철 제조 장치 및 용철 제조 방법
KR101620757B1 (ko) * 2014-12-23 2016-05-13 주식회사 포스코 용선 제조 장치 및 이를 이용한 용선 제조 방법

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110669891A (zh) * 2019-08-29 2020-01-10 内蒙古赛思普科技有限公司 一种熔融还原炉煤气循环利用装置及方法
EP4516382A4 (fr) * 2022-04-27 2025-11-12 Lowcarbon Co Ltd Capture de dioxyde de carbone, utilisation de ressources en carbone et système de production d'hydrogène pour aciérie

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