WO2011052795A1 - Procédé d'exploitation d'un haut fourneau - Google Patents

Procédé d'exploitation d'un haut fourneau Download PDF

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Publication number
WO2011052795A1
WO2011052795A1 PCT/JP2010/069640 JP2010069640W WO2011052795A1 WO 2011052795 A1 WO2011052795 A1 WO 2011052795A1 JP 2010069640 W JP2010069640 W JP 2010069640W WO 2011052795 A1 WO2011052795 A1 WO 2011052795A1
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Prior art keywords
biomass
coal
pulverized
pulverized coal
blast furnace
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PCT/JP2010/069640
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English (en)
Japanese (ja)
Inventor
鶴田秀和
浅沼稔
藤林晃夫
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Ｊｆｅスチール株式会社
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Priority to KR1020127012484A priority Critical patent/KR101405579B1/ko
Priority to CN201080048910.7A priority patent/CN102666881B/zh
Publication of WO2011052795A1 publication Critical patent/WO2011052795A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
    • C10B47/28—Other processes
    • C10B47/30—Other processes in rotary ovens or retorts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/40—Solid fuels essentially based on materials of non-mineral origin
    • C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/02—Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
    • C21B5/023—Injection of the additives into the melting part
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Definitions

  • the present invention relates to a blast furnace operating method in which biomass char obtained by dry distillation of biomass is used as an auxiliary reducing material for a blast furnace in a blast furnace process using pulverized coal as an auxiliary reducing material.
  • the amount of pulverized coal to be blown in varies depending on the operating conditions, but as the amount blown in increases, the amount of coke used can be reduced and the cost can be reduced. Usually, when 100 to 200 kg of pulverized coal per ton of pig iron is blown, almost the same amount of coke can be reduced.
  • the particle size of the pulverized coal blown here is generally in the range of 60 to 80% of the total pulverized coal mass (this is abbreviated as the particle size of the pulverized coal is 74 ⁇ m or less and 60 to 80 mass%). Things are used industrially.
  • Biomass is composed of carbon, oxygen, and hydrogen, but it itself has a high water content and a low calorific value (for example, moisture of 15 mass%, calorific value of 16.2 MJ / kg-dry basis) and is used directly in the iron making process. This is not advantageous in terms of efficiency. In addition, it is difficult to grind waste wood directly to 74 ⁇ m or less with an ordinary coal mill (roller mill, ball mill, etc.), and an impact type grinder is required.
  • the features of the present invention for solving such problems are as follows. (1) In a blast furnace operation method in which pulverized coal is blown from a tuyere as an auxiliary reducing material, biomass charcoal obtained by dry distillation of biomass is pulverized to produce a pulverized product of the biomass charcoal, A blast furnace operation method in which the pulverized biomass charcoal and pulverized coal are blown from the tuyere. (2) The blast furnace operating method according to (1), wherein the pulverized product of pulverized biomass coal and pulverized coal are mixed and pulverized coal and biomass coal are mixed and blown from a tuyere.
  • Blowing the pulverized biomass coal and pulverized coal consists of blowing pulverized biomass coal in the same tuyere and blowing pulverized biomass coal and pulverized coal from the pulverized coal blowing lance ( The blast furnace operating method as described in 1).
  • the blast furnace operating method according to (1) wherein the volatile matter concentration of the pulverized biomass coal and pulverized coal is blown from the tuyere so that the total concentration becomes 10 mass% or more.
  • the method for operating a blast furnace according to (1) comprising blowing from (9)
  • the present invention there is no restriction on the volatile content of pulverized coal, and even low-grade coal can be used in a blast furnace, and by using biomass coal obtained by dry distillation of biomass in a blast furnace, It can contribute to CO 2 emission reduction.
  • the inventors of the present invention have made extensive studies to solve the above problems, pulverizing biomass coal obtained by dry distillation of biomass, and blowing it from the blast furnace tuyere at the same time as pulverized coal, thereby improving the combustibility of pulverized coal. I found out that I can do it. As a result, even pulverized coal having a low volatile concentration can be used for blast furnace blowing, and the types of pulverized coal that can be used are expanded.
  • Biomass charcoal obtained by dry distillation of biomass can be finely pulverized, so pulverized coal and biomass charcoal are mixed in advance and blown into a furnace using a pulverized coal blowing pipe, or biomass charcoal is usually used alone. It is possible to blow into the furnace using the pulverized coal blowing pipe. Therefore, if it is a blast furnace in which pulverized coal injection operation is performed, blast furnace injection operation of biomass coal can be carried out without specially updating the equipment.
  • biomass charcoal produced by dry distillation of biomass and pulverized coal are blown into the furnace at the same time, the burning speed of biomass coal is high, so the pulverized coal is heated by the biomass coal combustion heat, and the pulverized coal combustibility Can be improved.
  • Increasing the volatile content of the auxiliary reducing material improves the combustion rate and reduces the generation of unburned char. Consequently, the burden of consumption with CO 2 and H 2 O in the furnace is reduced.
  • the biomass when pulverized coal with a low volatile concentration is blown from the tuyere of the blast furnace and used as a supplementary reducing material in blast furnace operation, the biomass is dry-distilled to a predetermined volatile concentration, pulverized after being converted into biomass coal
  • the volatile matter concentration of pulverized coal and biomass coal is mixed so that the total concentration is equal to or higher than a predetermined concentration, and the pulverized coal and biomass coal are blown at the same time, so that the combustion rate of low-volatile coal can be improved.
  • the concentration of volatile components in the mixed state in the furnace may be equal to or higher than a predetermined concentration, and it is not always necessary to mix and blow in advance.
  • a predetermined volatile matter concentration of the total of pulverized coal and biomass coal for example, the volatile matter concentration of pulverized coal usually used in a blast furnace can be used.
  • the total volatile component concentration of pulverized coal and biomass coal is 10 mass% or more.
  • the total volatile component concentration of pulverized coal and biomass coal is 10 mass% or more, a combustion rate of additivity or higher can be ensured.
  • a higher volatile concentration is preferable for improving combustibility, but in the present invention, the preferred range is that the total volatile concentration is 50 mass% or less. This is because it is difficult to adjust the total volatile matter concentration to exceed 50 mass% when the volatile matter concentration of ordinary coal used as pulverized coal is 50 mass% or less, and when the proportion of pulverized coal is large. .
  • the volatile concentration is as high as about 70 mass% and the carbon content is 50 mass% or less. Therefore, when using biomass with pulverized coal, it is effective to increase the volatile content concentration.
  • the coke replacement rate is low due to the low carbon content of 50 mass% or less, so it is not suitable for use as an alternative to pulverized coal, and it is more effective to use biomass coal. It will be. For example, when 6 mass% or more of biomass coal (volatile content concentration: 40.09 mass%) is blended with pulverized coal (volatile content concentration: 8.50 mass%), the total volatile concentration becomes 10 mass% or more, and is predicted from additivity.
  • a higher combustion rate than can be achieved can be obtained. More preferably, it is preferable to blow from the tuyere so that the total volatile concentration of pulverized coal and biomass coal is 15 mass% or more. When the total volatile component concentration of pulverized coal and biomass coal becomes 15 mass% or more, the ratio at which a combustion rate of additivity or higher can be ensured can be increased. Most preferably, the total concentration of volatile components is 15 mass% or more and 50 mass% or less.
  • the volatile matter concentration of biomass charcoal can be adjusted to a predetermined concentration.
  • the dry distillation temperature is preferably 600 ° C. or lower. When the carbonization temperature exceeds 600 ° C., the volatile matter concentration of biomass coal becomes about 10 mass%, and it may be difficult to adjust the volatile matter concentration to 15% or more by mixing with pulverized coal.
  • the volatile matter concentration of biomass charcoal is preferably 25 mass% or more. When the volatile content concentration of biomass charcoal is 25 mass% or less, it may be difficult to ensure a combustion rate of additivity or higher.
  • the volatile matter concentration of biomass charcoal is preferably 50 mass% or less. This is because biomass charcoal with a volatile content concentration exceeding 50 mass% does not sufficiently undergo dry distillation, and the pulverization amount per hour may be significantly reduced in the pulverization step.
  • the reason why the ratio of the pulverized biomass charcoal is preferably 6 mass% or more is as follows. Biomass charcoal obtained by treating biomass at a dry distillation temperature of 300 ° C. is assumed as general biomass charcoal suitable for mixing and using as pulverized coal. Biomass coal treated at a dry distillation temperature of 300 ° C. has a volatile concentration of about 40 mass% and a carbon content of about 70 mass%, which is suitable for use as an alternative to pulverized coal.
  • pulverized coal with a low volatile concentration in pulverized coal may have a volatile concentration lower than 10 mass%. Therefore, in order to make the volatile concentration after mixing 10 mass% or more, pulverize biomass coal. It is preferable to mix 6 mass% or more of the product.
  • the reason why the ratio of the pulverized biomass charcoal is preferably 50 mass% or less is as follows. Assuming a case where 100 to 200 kg of pulverized coal is blown per 1 ton of pig iron in a blast furnace with an annual output of 5 million tons, the annual amount of pulverized coal used is 500 to 1 million tons. When replacing 50% by mass of pulverized coal with biomass coal, biomass coal of 250,000 to 500,000 tons per year is required.
  • biomass charcoal when biomass charcoal is produced from biomass is 20% by mass, 1.25 to 2.5 million tons of biomass raw material is required annually.
  • woody biomass such as residual forest land, riverbed
  • Various biomass raw materials such as herbaceous biomass, sewage sludge, food waste, etc. generated by the
  • the properties of the produced biomass charcoal will differ in terms of components other than grindability, etc.
  • the properties of the mixture are stabilized, so that it can be sufficiently used in a blast furnace.
  • the pulverized coal it is preferable to use a pulverized coal having less variation in the content ratio of constituent elements such as fixed carbon, volatile matter, and ash compared to biomass coal produced from a wide variety of biomass raw materials.
  • the reason why the ratio of the pulverized biomass charcoal is more than 20% by mass is shown below.
  • the combustion and gasification rate of the mixture obtained on the premise that additivity is established from the respective combustion and gasification rates of pulverized coal and biomass coal is A, and the measured combustion and gasification rate of B is B, and the additivity
  • C is calculated in Invention Examples 1 to 3 in the following Examples, it is 4 or more, but in Invention Examples 4 and 5, it is 2 or less.
  • the ratio of the pulverized coal to the pulverized coal is 10 mass% of the total volatile concentration of the pulverized biomass coal and the pulverized coal. As mentioned above, it is preferable to adjust the ratio so that it may become 50 mass% or less.
  • Table 1 shows an example of changing the mixing ratio of the volatile content of the mixture of pulverized biomass coal and pulverized coal.
  • the volatile content of biomass charcoal varies depending on the dry distillation conditions and the biomass used.
  • the volatile concentration of biomass coal is Dmass% and the volatile concentration of pulverized coal is Emass%
  • the biomass coal is mixed with Fmass%
  • the pulverized coal is Gmass%
  • the F value is 6 or more.
  • the effect of the present invention can be expected if the volatile content concentration of the mixture obtained by D ⁇ F / 100 + E ⁇ G / 100 is 10 mass% or more.
  • the dry distillation method for dry distillation of biomass may be any of a normal batch method, a rotary kiln method, a vertical furnace method, and the like, and it is preferable to use a rotary kiln method that can be adopted as a continuous process.
  • the generated dry distillation gas is preferably used as a heat source for biomass dry distillation, and can be used as appropriate, for example, by supplying it to a steel chemical process.
  • Biomass is a generic term for a certain amount of animal and plant resources and wastes originating from them (excluding fossil resources).
  • the biomass used in the present invention includes agricultural, forestry, and livestock. Any biomass, such as fisheries, waste, etc., that pyrolyzes to produce carbides can be used. It is preferable to use biomass having a high effective calorific value, and it is preferable to use woody biomass.
  • Woody biomass includes papermaking by-products such as pulp black liquor and chip dust, lumber by-products such as bark and sawdust, forest land remnants such as branches, leaves, treetops, and end mills, cedar, cypress, pine, etc.
  • Forest products such as thinned timber, edible fungi from special forest products such as hodwood, firewood charcoal such as shii, konara, pine, forestry biomass such as willow, poplar, eucalyptus, pine, etc.
  • General waste such as pruned branches of garden trees in private houses, pruned branches of country and prefectures, pruned branches of garden trees of companies, industrial waste such as construction and building waste, and the like.
  • Agricultural biomass is classified as agricultural biomass, such as rice husk, wheat straw, rice straw, sugarcane cass, palm palm, etc., which originates from waste and by-products, and rice biomass, rapeseed, soybean, etc., which originates from energy crops.
  • the part can also be suitably used as woody biomass.
  • Biomass coal and pulverized coal are preferably blown into the furnace from the same tuyere of the blast furnace. Even if biomass charcoal and pulverized coal are blown from different tuyere, there is a certain effect, but by blowing into the furnace from the same tuyere, biomass charcoal and pulverized coal are quickly mixed.
  • a double flow lance method may be used by inserting a dedicated lance for biomass coal powder and a dedicated lance for pulverized coal into the same tuyere, or in the middle of the powder supply pipe
  • the biomass charcoal powder and pulverized coal may be mixed. It is also possible to mix the powder of biomass charcoal and pulverized coal in advance and then blow in what is supplied to a powder feeder such as a hopper.
  • the biomass 1 is supplied to the carbonization apparatus 2 and carbonized under predetermined conditions to produce biomass charcoal 3.
  • the obtained biomass charcoal 3 is supplied to the mixing device 5 together with the pulverized coal 4 made of low-volatile coal, and then pulverized by the pulverizing device 6 to 80 mass% or less of 74 ⁇ m.
  • the pulverized biomass coal and pulverized coal are supplied to the blowing device 7 and blown into the blast furnace 8.
  • FIG. 2 is used to describe an embodiment in which a rotary kiln is used as a biomass carbonization apparatus.
  • an apparatus main body 11 of a rotary kiln furnace 10 that is a dry distillation furnace includes an outer tube 12 and an inner tube 13.
  • the inner tube 13 is disposed concentrically with the outer tube 12 in the inner longitudinal direction of the outer tube 12.
  • the inside of the inner pipe 13 constitutes a biomass passage 14 (processing space), and the space between the outer pipe 12 and the inner pipe 13 constitutes a heating gas passage 15.
  • biomass 1 crushed in advance by a crushing apparatus (not shown) is supplied from one end side of the rotary kiln main body 11 to the processing space 14 via a screw feeder 16 for material supply.
  • the heated gas (hot air) 17 is supplied to the heated gas space 15 via the hot air conduit 18.
  • Reference numeral 19 denotes a material supply device
  • 20 and 21 denote drive motors
  • 22 denotes a heated gas discharge port
  • 23 denotes a processed material and a generated gas discharge port.
  • the heated gas 17 supplied to the heated gas passage 15 heats the entire inner tube 13, and the biomass is heated and dry-distilled through the tube wall.
  • the heated gas 17 flowing through the heated gas passage 15 is discharged from the discharge port 22 on the other end side of the apparatus main body 11.
  • the biomass 1 supplied to the processing space 14 inside the inner pipe 13 is heated while being transported through the processing space 14 while being mixed by the rotation of the inner pipe 13, is dry-distilled, and becomes biomass charcoal 3.
  • the cooling gas may be an inert gas.
  • emitted from a cooling part should just be the temperature range which does not ignite, and should just be 200 degreeC. More preferably, it is 100 ° C. or lower.
  • the biomass was carbonized using the rotary kiln apparatus shown in FIG.
  • the heating method of the rotary kiln was three-part electric heating.
  • the rotary kiln had an inner diameter of 15 cm, a length of 1.0 m, an inclination angle of 1 degree, a carbonization temperature of 375 ° C., and a carbonization time of 50 minutes (rotary kiln rotation speed: 1.5 rpm).
  • As the biomass waste wood of cedar that was pulverized and classified to 3 mm to 10 mm was used. Table 2 shows the composition of the biomass used.
  • the biomass supply speed to the rotary kiln was 2.0 kg / h.
  • the yield of the obtained biomass charcoal was 33.9 mass%, the volatile content concentration was 40.1 mass%, and the calorific value was 7770 kcal / kg.
  • the biomass charcoal obtained above was pulverized and mixed with pulverized coal having the composition shown in Table 3, and the combustibility was evaluated.
  • the evaluation of combustibility was performed by a combustion test using the combustion test apparatus shown in FIG. 3 under the conditions shown in Table 4.
  • the combustion test apparatus 30 had a blowing direction length of 600 mm, a tuyere 31 with a diameter of 65 mm, and a blow pipe 32 with a diameter of 90 mm.
  • a probe 34 for measuring and collecting the temperature and gas composition in the raceway 33 is installed. Biomass coal and pulverized coal are blown into the combustion test apparatus 30 from the tuyere 31 and burned in a raceway 33 formed in front of the tuyere, and biomass charcoal and pulverized coal within the raceway maximum temperature position and combustion. -Gasification rate was measured.
  • the highest temperature position in the raceway of biomass coal and pulverized coal blown into the combustion test apparatus 30 from the tuyere 31 shows combustibility, and the closer to the tuyere, the better the combustibility, so the highest temperature position in the raceway. Indicates the distance from the tuyere.
  • the combustion / gasification rate was calculated by “(coke consumption rate without blowing ⁇ coke consumption rate with blowing) / (blowing rate of biomass coal and pulverized coal)”.
  • the mixing ratio of the biomass charcoal and the pulverized coal is a mass ratio, 50 biomass charcoal (total concentration of volatile matter: 24.30 mass%) with respect to the pulverized coal 50 in the present invention example 1, and 60 pulverized coal in the present invention example 2.
  • FIG. 4 shows the measurement result of the maximum temperature position (distance from the tuyere) in the raceway
  • FIG. 5 shows the measurement result of the combustion / gasification rate.
  • FIG. 6 shows the relationship between the combustion / gasification rate when additivity is established and the combustion / gasification rate measured above. If additivity is established in the combustion of biomass coal and pulverized coal, the combustion rate of Invention Example 1 is 59.3%, Invention Example 2 is 56.4%, and Invention Example 3 is 50.5%. Inventive Example 4 should be 47.6% and Inventive Example 5 should be 46.4%, but the combustibility of the mixture of biomass coal and pulverized coal improved more than expected from the additivity. It is thought that the total combustibility was improved by mixing biomass charcoal with a high volatile content.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Manufacture Of Iron (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

Cette invention concerne un procédé d'exploitation d'un haut fourneau qui permet d'éliminer les problèmes associés à l'utilisation du charbon en poussière en tant que matériau de réduction supplémentaire lors d'une opération en haut fourneau. Le procédé de l'invention permet en outre de contribuer à la réduction d'émissions de CO2 par utilisation de biomasse au lieu du charbon en poussière. Le procédé d'exploitation de haut fourneau dans lequel du charbon en poussière est soufflé en tant que matériau de réduction supplémentaire à travers les tuyères, est caractérisé par les étapes consistant à carboniser de la biomasse (1) dans un dispositif de carbonisation (2), pulvériser le charbon de biomasse (3) obtenu, et souffler le charbon pulvérisé dans le four à travers les tuyères simultanément avec du charbon en poussière (4). De préférence, le charbon de poussière et la biomasse sont mélangés l'un avec l'autre au moyen d'un mélangeur (5) pour être ensuite soufflés dans le fourneau à travers les tuyères, et la poussière de charbon ainsi que le charbon de biomasse sont de préférence soufflés à travers les tuyères de manière à ce que la concentration totale en substances volatiles soit supérieure ou égale à 10%.
PCT/JP2010/069640 2009-10-29 2010-10-28 Procédé d'exploitation d'un haut fourneau WO2011052795A1 (fr)

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CN201080048910.7A CN102666881B (zh) 2009-10-29 2010-10-28 高炉操作方法

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CN115820954A (zh) * 2023-02-17 2023-03-21 北京科技大学 一种高炉喷吹co2-生物质炭钢化联产碳减排系统及应用过程
WO2024103122A1 (fr) * 2022-11-17 2024-05-23 Newsouth Innovations Pty Limited Co-injection d'hydrogène et de biomasse dans la fabrication de fer pour la décarbonisation

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TR201901813T4 (tr) * 2013-04-19 2019-03-21 Jfe Steel Corp Maden eritme fırını çalıştırma yöntemi
EP3118283B1 (fr) * 2014-03-11 2023-04-26 Hyundai Steel Company Charbon pulvérisé contenant du fumier de vache entrant dans la fabrication de la fonte brute, et procédé de fabrication de fonte brute l'utilisant
WO2015137737A1 (fr) * 2014-03-11 2015-09-17 현대제철 주식회사 Charbon pulvérisé contenant du fumier de vache entrant dans la fabrication de la fonte brute, et procédé de fabrication de fonte brute l'utilisant
JP6551470B2 (ja) * 2016-07-29 2019-07-31 Ｊｆｅスチール株式会社 高炉操業方法
JP6885282B2 (ja) * 2017-09-27 2021-06-09 Ｊｆｅスチール株式会社 高炉操業方法
JP7456560B1 (ja) 2022-11-14 2024-03-27 Ｊｆｅスチール株式会社 焼結用炭材、焼結鉱及び焼結用炭材の製造方法

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