KR970043091A - Fluidized Bed Reduction Device of Iron Iron Ore - Google Patents

Fluidized Bed Reduction Device of Iron Iron Ore Download PDF

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Publication number
KR970043091A
KR970043091A KR1019950046831A KR19950046831A KR970043091A KR 970043091 A KR970043091 A KR 970043091A KR 1019950046831 A KR1019950046831 A KR 1019950046831A KR 19950046831 A KR19950046831 A KR 19950046831A KR 970043091 A KR970043091 A KR 970043091A
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KR
South Korea
Prior art keywords
iron ore
fluidized
iron
bed reduction
fluidized bed
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Application number
KR1019950046831A
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Korean (ko)
Other versions
KR100256338B1 (en
Inventor
김용하
이일옥
김행구
Original Assignee
김종진
포항종합제철 주식회사
신창식
재단법인 산업과학기술연구소
원본미기재
뵈스트-알핀 인두스프리안라겐바우 게엠바하
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Application filed by 김종진, 포항종합제철 주식회사, 신창식, 재단법인 산업과학기술연구소, 원본미기재, 뵈스트-알핀 인두스프리안라겐바우 게엠바하 filed Critical 김종진
Priority to KR1019950046831A priority Critical patent/KR100256338B1/en
Publication of KR970043091A publication Critical patent/KR970043091A/en
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Publication of KR100256338B1 publication Critical patent/KR100256338B1/en

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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
    • 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
    • C21B13/0086—Conditioning, transformation of reduced iron ores
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
    • F27B15/02—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B15/10—Arrangements of air or gas supply devices

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

Abstract

본 발명은 입도분포가 넓은 분철광석을 환원하는 유동층식 환원장치에 관한 것으로써, 철광석의 환원로내 평균체류시간이 광석 입경별로 조절되어 환원효율이 향상됨과 동시에 환원로내 가스의 체류시간이 증가되어 가스이용율이 향상되는 분철광석의 유동층식 환원장치를 제공하고자 하는데, 그 목적이 있다. 본 발명은 미립철광석이 배출되는 상부배출구 및 대립 철광석이 배출되는 하부 배출구가 형성되고, 그리고 그 하부내에 가스분산판이 구비되어 있는 유동층식 환원로의 하부로부터 환원가스를 공급하여 철광석 공급구를 통해 유입되는 분립상의 철광석을 유동화 시키고 유동층식 환원로의 상부로부터 환원가스에 동반되어 순환관을 통해 배출된 극미립철광석을 입자포집장치에 의해 환원가스로부터 분리하여 극미립철광석 공급관을 경유하여 유동층식 환원로내에 공급되도록하여 입도분포가 넓은 분철관석을 환원하도록 구성되는 분철광석의 유동층식 환원장치에 있어서, 상기유동층식 환원로가 상부인 원통부와 하부인 원추부로 이루어지고, 상기 원추부는 상광하협 형태를 갖고, 상기 원추부의 일측에는 상부 배출구, 철광석 공급구 및 하부 배출구가 위로부터 차례로 형성되고, 그릭, 상기 극미립 철광석 공급관이 상기 원추부의 타측 하부에 연결되도록 구성되는 분철광석의 유동층식 환원장치를 그 요지로 한다.The present invention relates to a fluidized bed type reduction apparatus for reducing iron ore having a wide particle size distribution, and the average residence time of iron ore is adjusted for each ore particle diameter to improve reduction efficiency and increase residence time of gas in the reduction furnace. It is to provide a fluidized bed reduction device of the iron ore is improved gas utilization, the purpose is. The present invention is provided through the iron ore supply port by supplying a reducing gas from the bottom of the fluidized-bed reduction furnace is provided with an upper outlet for discharging the fine iron ore and a lower outlet for discharging the iron ore, and the gas distribution plate is provided therein Fluidized iron ore is fluidized and the ultrafine iron ore discharged through the circulating pipe from the top of the fluidized-bed reduction reactor is separated from the reducing gas by the particle collecting device and flows through the ultrafine iron ore supply pipe. In the fluidized bed reduction device of the iron-iron ore, which is configured to reduce the powdered iron capstone having a large particle size distribution, the fluidized-bed reduction furnace is composed of a cylindrical portion of the upper portion and a conical portion of the lower portion, the cone portion of the image One side of the cone portion has an upper outlet, iron ore supply port and a lower discharge A sphere is formed in order from above, and the gist thereof is a fluidized bed reduction device for iron ore in which the ultrafine iron ore supply pipe is connected to the lower side of the other side of the cone.

Description

분철광석의 유동층식 환원장치Fluidized Bed Reduction Device of Iron Iron Ore

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 종래의 분철광석의 유동층식 환원장치를 나타내는 정단면구조도,1 is a front sectional structure diagram showing a fluidized bed reduction apparatus of a conventional iron ore,

제2도는 본 발명에 부합되는 분철광석의 유동층식 환원장치를 나타내는 정단면구조도Figure 2 is a front cross-sectional structure showing a fluidized bed reduction device of the iron ore according to the present invention

Claims (3)

미립철광석이 배출되는 상부배출구(113) 및 대립 철광석이 배출되는 하부 배출구(114)가 형서오디고, 그리고 그 하부내에 가스분산판(21a)이 구비되어 있는 유동층식 환원로의 하부로부터 환원가스를 공급하여 철광석 공급구(112)를 통해 유입되는 분립상의 철광석을 유동화시키고 유동층식 환원로의 상부로부터 환원가스에 동반되어 순환관(115)을 통해 배출된 극미립철광석을 입자포집장치에 의해 환원가스로부터 분리하여 극미립철광석 공급관(121)을 경유하여 유동층식 환원로내에 공급되도록 하여 입도분포가 넓은 분철광석을 환원하도록 구성되는 분철광석의 유동층식 환원장치에 있어서, 상기 유동층식 환원로가 상부인 원통부(211)와 하부인 원추부(212)로 이루어지고, 상기 원추부(212)는 상광하협 형태를 갖고, 상기 원추부(212)의 일측에는 상부 배출구(113), 철광석 공급구(112) 및 하부 배출구(114)가 위로부터 차례로 형성되고, 그리고, 상기 극미립 철광석 공급관(121)이 상기 원추부(212)의 타측 하부에 연결되도록 구성되는 분철광석의 유동층식 환원장치Reducing gas from the lower part of the fluidized-bed reduction furnace in which the upper outlet 113 through which the fine iron ore is discharged and the lower outlet 114 through which the opposing iron ore is discharged are formed, and the gas distribution plate 21a is provided therein. It supplies the fluidized iron ore flowing through the iron ore supply port 112 and is reduced gas from the upper part of the fluidized-bed reduction furnace with the reducing gas discharged through the circulation pipe 115 by the particle collecting device In the fluidized bed reduction apparatus of the iron-iron ore is configured to reduce the iron-iron ore is separated through the fine-iron iron ore supply pipe 121 to be supplied into the fluidized-bed reduction furnace, so that the particle size distribution is wide. Conical portion 211 and the lower portion of the conical portion 212, the cone portion 212 has a form of a light beam down, one side of the cone portion 212, the upper discharge The iron ore supply port 112 and the lower outlet port 114 are sequentially formed from the top, and the fine iron ore supply pipe 121 is connected to the other lower portion of the conical part 212. Fluidized Bed Reduction Equipment 제1항에 있어서, 상기 원추부(212)의 경사도가 3-25°인 것을 특징으로 하는 분철광석의 유종층식 환원장치The method according to claim 1, wherein the slope of the cone portion 212 is 3-25 °, the type of layered reduction device of the iron ore 제1항 또는 제2항에 있어서, 상기 원추부(212)의 경사도가 5-10인 것을 특징으로 하는 분철광석의 유동층식 환원장치The fluidized bed reduction apparatus of claim 1 or 2, wherein the inclination of the cone portion 212 is 5-10.
KR1019950046831A 1995-12-05 1995-12-05 Fluidised bed reducing apparatus for iron ore powder KR100256338B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950046831A KR100256338B1 (en) 1995-12-05 1995-12-05 Fluidised bed reducing apparatus for iron ore powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950046831A KR100256338B1 (en) 1995-12-05 1995-12-05 Fluidised bed reducing apparatus for iron ore powder

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KR970043091A true KR970043091A (en) 1997-07-26
KR100256338B1 KR100256338B1 (en) 2000-05-15

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Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04301021A (en) * 1991-03-29 1992-10-23 Nippon Steel Corp Method for preventing formation of stuck material to nozzle in fluidized reduction furnace

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