WO2001048250A1 - Procede d'utilisation de poudre de carbone activee recuperee d'un appareil de traitement de gaz d'echappement de frittage - Google Patents

Procede d'utilisation de poudre de carbone activee recuperee d'un appareil de traitement de gaz d'echappement de frittage Download PDF

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Publication number
WO2001048250A1
WO2001048250A1 PCT/JP2000/009375 JP0009375W WO0148250A1 WO 2001048250 A1 WO2001048250 A1 WO 2001048250A1 JP 0009375 W JP0009375 W JP 0009375W WO 0148250 A1 WO0148250 A1 WO 0148250A1
Authority
WO
WIPO (PCT)
Prior art keywords
activated carbon
carbon powder
sintering
reused
blast furnace
Prior art date
Application number
PCT/JP2000/009375
Other languages
English (en)
Japanese (ja)
Inventor
Hiroshi Kurokawa
Hidenobu Kusunoki
Masahiko Hamada
Akifumi Umedu
Original Assignee
Nippon Steel Corporation
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 Nippon Steel Corporation filed Critical Nippon Steel Corporation
Priority to AU24044/01A priority Critical patent/AU777336B2/en
Publication of WO2001048250A1 publication Critical patent/WO2001048250A1/fr

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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
    • C21B13/0066—Preliminary conditioning of the solid carbonaceous reductant
    • 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
    • C21B5/003—Injection of pulverulent coal
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/007—Conditions of the cokes or characterised by the cokes used
    • 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
    • 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
    • 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
    • Y02P10/20—Recycling

Definitions

  • the present invention relates to a method of using activated carbon powder collected from a sintering flue gas treatment facility for recycling and effectively using activated carbon powder collected from a sintering flue gas treatment facility that has been conventionally disposed of.
  • Akita
  • an exhaust gas treatment device for desulfurizing exhaust gas generated from a sintering machine has been used in a steelmaking plant.
  • this exhaust gas treatment device for example, Japanese Patent Application Laid-Open No. 5-200272 is disclosed. ⁇
  • Japanese Patent Application Laid-Open No. 10-128687 a dry type using activated carbon is known.
  • the present invention solves the conventional problems as described above, and enables a sintering flue gas treatment facility capable of recycling activated carbon powder collected from a conventionally disposed sintering flue gas treatment facility for effective use. It was completed with the aim of providing a method of using activated carbon powder recovered from Japan.
  • the method of using the activated carbon powder recovered from the sintering exhaust gas treatment equipment of the present invention which has been made to solve the above-mentioned problem, is to reuse the activated carbon powder recovered from the sintering exhaust gas treatment equipment in the iron making process. It is characterized by the following. As a specific method of recycling, activated carbon powder is hardened with a binder together with dust collected dust, sludge, and ore crushed material into a cold pellet, and is reused as a blast furnace raw material. Invention.
  • FIG. 1 is a schematic diagram showing a treatment device for sintering exhaust gas.
  • FIG. 2 is a graph showing the relationship between the blending ratio of the carbon-containing components in the cold pellets and the pressure loss.
  • FIG. 3 is a schematic diagram showing a pellet manufacturing apparatus.
  • FIG. 4 is a graph showing the relationship between the raw material mixing ratio of activated carbon powder and the production rate.
  • Figure 1 shows a basic sintering flue gas treatment system, where 1 is an activated carbon adsorption tower, 2 is an activated carbon regeneration tower, 3 is an activated carbon transfer conveyor, 4 is a sieve, and 5 is an activated carbon powder hopper. , 6 is the chimney.
  • the activated carbon powder recovered in the activated carbon powder hopper 5 has been conventionally disposed of, but has a characteristic configuration in that the activated carbon powder is recycled and reused in the iron making process for effective use.
  • the present inventors focused on the fact that coke powder was used in the iron making process, and based on the insight that activated carbon powder similar in properties to this could be used if some measures were taken. Of various researches, it can be reused without disposal We established a way to do this.
  • activated carbon powder can be collected together with dust dust, sludge, ores (iron-containing ore) and crushed material with a binder to form cold pellets and reused as raw material .
  • the cold pellets are introduced into the blast furnace as a raw material for the blast furnace, and especially, the carbon-containing cold pellets containing coke powder can be uniformly reduced, including the inside, to improve the reducibility. .
  • it succeeded in using activated carbon powder instead of the said coke powder.
  • activated carbon powder instead of the said coke powder.
  • the amount of coal is too large, the reducibility will be too good (it will melt at low temperature), which will deteriorate the permeability in the furnace.
  • activated carbon powder has a larger surface area than coke powder. There is a need.
  • the sample was heated in a heating pattern that simulated the inside of a blast furnace, and the change in pressure loss value due to the melting characteristics was measured, as shown in Fig. 2. It turned out that the volume ratio is 15% or less, preferably 10% or less.
  • the obtained cold pellets had sufficient strength by using cement as a binder, and were excellent in handleability.
  • An example of cold pellets is as follows: blast furnace dust collected by mass is 30.0%, sintered dust collected dust is 12.5%, activated carbon powder is 4.3%, ores (ore containing iron). A mixture of 42.9% of crushed material and 6.5% of binder cement was prepared and put into a blast furnace for use. As a result, it was confirmed that the operation could be stably continued without inferiority to the cold pellets (constituted by replacing the above-mentioned activated carbon powder with coke powder) mixed with conventional coke powder.
  • the cold pellet as described above stores activated carbon powder extracted by a jet pack vehicle from the activated carbon powder hopper 5 of the sintering exhaust gas treatment device in a raw material tank of a pellet manufacturing device as shown in FIG. It is made into pellets of a prescribed blending amount by solidifying it with a binder together with dust collected, sludge, and ore crushed material (eg, fine ore). Further, pellets including iron sand may be solidified with a binder to form pellets. And The obtained cold pellets can be used as blast furnace raw materials in the blast furnace in the iron making process.
  • activated carbon powder can be added to pseudo-granulated dust and reused as a sintering fuel in a sintering machine.
  • quasi-granulated dust is one that has been conventionally produced in a cold pellet production plant, and ore, dust, etc. are granulated without adding cement.
  • activated carbon powder has a fine average particle size of about 0.2 mm, simply using it as a fuel for sintering reduces the porosity of the packed bed of sintering raw materials, impedes airflow, and leads to deterioration of productivity.
  • the combustion speed is high, the amount of heat transferred to the ore is small, and the sinter strength is reduced.
  • the present inventors have focused on the amount of activated carbon powder (mass ratio) and studied. Specifically, an operation experiment was conducted by replacing the activated carbon powder with coke powder by 0.055% in a range of 0.05 to 0.2% in a blending raw material ratio. As a result, as shown in FIG. 4, it was found that when the content was more than 0.1%, the productivity was remarkably deteriorated. Therefore, the blending amount of the activated carbon powder was preferably 0.1% or less in the blending material ratio. However, it was confirmed that they could be used under these conditions without affecting the sintering operation.
  • activated carbon powder when activated carbon powder is granulated by mixing it with the raw material of pseudo-granulated dust and used, when it is used as the above-mentioned direct sintering fuel, it can be used only up to 0.1% by sintering bonding raw material ratio In contrast, it was confirmed that the amount of activated carbon powder contained in the quasi-granulated dust could be used without affecting the sintering operation up to the equivalent of 1.0% in the sintering compounding raw material ratio.
  • activated carbon powder can be blown into the tuyere of the blast furnace and reused as fuel and / or reducing agent.
  • activated carbon powder is harder than pulverized coal, and if the pulverized coal blowing equipment is used as it is, problems such as pipe abrasion occur. Therefore, anti-wear measures must be taken before use.
  • Activated carbon powder has a larger particle size than pulverized coal after crushing, and the burning rate in the blast furnace slows down. Therefore, in the present invention, it was confirmed that the operation could be performed without any change in the furnace condition if the blowing amount was up to 40 Kg / T.
  • the present invention is capable of recycling the activated carbon powder collected from the sintering waste gas treatment facility that has been conventionally disposed of, thereby achieving effective utilization.
  • the present invention greatly contributes to industrial development as a method of using activated carbon powder recovered from a sintering exhaust gas treatment facility that has eliminated the conventional problems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture Of Iron (AREA)
  • Processing Of Solid Wastes (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

L'invention concerne un procédé d'utilisation d'une poudre de carbone récupérée d'un appareil de traitement de gaz d'échappement de frittage. Dans ce procédé, la poudre de carbone activée est réutilisée dans un processus de production du fer. Plus précisément, ladite poudre est fondue avec la poussière, les boues et les minerais broyés au moyen d'un liant en granules, qui sont réutilisées comme matière première dans un haut fourneau; la poudre est ajoutée à de la poussière quasi-granulée, et le mélange résultant est réutilisé comme combustible pour frittage dans une machine de frittage; ou on souffle ladite poudre dans une tuyère d'un haut fourneau pour la réutiliser comme combustible et agent réducteur dans un haut fourneau. On peut utiliser ce procédé pour recycler et utiliser efficacement une poudre de carbone activée récupérée d'un appareil de traitement de gaz d'échappement de frittage, qui était d'ordinaire éliminée comme déchets.
PCT/JP2000/009375 1999-12-28 2000-12-28 Procede d'utilisation de poudre de carbone activee recuperee d'un appareil de traitement de gaz d'echappement de frittage WO2001048250A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU24044/01A AU777336B2 (en) 1999-12-28 2000-12-28 Method for utilizing activated carbon powder recovered from exhaust sintering gas treating apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP37204099A JP2001181746A (ja) 1999-12-28 1999-12-28 焼結排ガス処理設備から回収した活性炭粉の利用方法
JP11-372040 1999-12-28

Publications (1)

Publication Number Publication Date
WO2001048250A1 true WO2001048250A1 (fr) 2001-07-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2000/009375 WO2001048250A1 (fr) 1999-12-28 2000-12-28 Procede d'utilisation de poudre de carbone activee recuperee d'un appareil de traitement de gaz d'echappement de frittage

Country Status (4)

Country Link
JP (1) JP2001181746A (fr)
KR (1) KR100623345B1 (fr)
AU (1) AU777336B2 (fr)
WO (1) WO2001048250A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101549530B (zh) * 2008-12-30 2011-02-16 重庆科技学院 快凝水硬化污泥冷固球团及其制备方法
CN108315083A (zh) * 2018-02-23 2018-07-24 鞍钢股份有限公司 一种高炉喷吹用混合燃料及其喷吹方法
CN113174453A (zh) * 2021-04-28 2021-07-27 陕西龙门钢铁有限责任公司 一种烧结矿脱硫工艺中的活性炭粉的用途

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003024918A (ja) * 2001-07-13 2003-01-28 Uni Charm Corp 使用済み衛生物品の処理方法
KR101353896B1 (ko) 2012-11-21 2014-01-22 (주)성일하이테크 코크스 더스트 성형탄 제조방법
CN111471852B (zh) * 2020-06-16 2021-10-01 武汉钢铁有限公司 一种将废活性炭粉用于烧结的方法、烧结混合料和烧结矿

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4852616A (fr) * 1971-11-05 1973-07-24
JPH11302749A (ja) * 1998-04-16 1999-11-02 Daido Steel Co Ltd 製鋼ダストの処理方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4852616A (fr) * 1971-11-05 1973-07-24
JPH11302749A (ja) * 1998-04-16 1999-11-02 Daido Steel Co Ltd 製鋼ダストの処理方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101549530B (zh) * 2008-12-30 2011-02-16 重庆科技学院 快凝水硬化污泥冷固球团及其制备方法
CN108315083A (zh) * 2018-02-23 2018-07-24 鞍钢股份有限公司 一种高炉喷吹用混合燃料及其喷吹方法
CN113174453A (zh) * 2021-04-28 2021-07-27 陕西龙门钢铁有限责任公司 一种烧结矿脱硫工艺中的活性炭粉的用途

Also Published As

Publication number Publication date
AU777336B2 (en) 2004-10-14
JP2001181746A (ja) 2001-07-03
KR20010102419A (ko) 2001-11-15
KR100623345B1 (ko) 2006-09-11
AU2404401A (en) 2001-07-09

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