KR960007793A - Fluidized Bed Iron Ore Preliminary Reduction Furnace - Google Patents

Fluidized Bed Iron Ore Preliminary Reduction Furnace Download PDF

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Publication number
KR960007793A
KR960007793A KR1019940019090A KR19940019090A KR960007793A KR 960007793 A KR960007793 A KR 960007793A KR 1019940019090 A KR1019940019090 A KR 1019940019090A KR 19940019090 A KR19940019090 A KR 19940019090A KR 960007793 A KR960007793 A KR 960007793A
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South Korea
Prior art keywords
iron ore
reduction furnace
preliminary reduction
preliminary
fluidized
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KR1019940019090A
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Korean (ko)
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KR970003133B1 (en
Inventor
박문덕
박태용
Original Assignee
김만제
포항종합제철 주식회사
신창식
재단법인 산업과학기술연구소
파투찌알렉산더·아르민토이플
뵈스트-알핀인두스트리안라겐바우 게엠베하
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Priority to KR1019940019090A priority Critical patent/KR970003133B1/en
Publication of KR960007793A publication Critical patent/KR960007793A/en
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Publication of KR970003133B1 publication Critical patent/KR970003133B1/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
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • 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
    • F27B15/003—Cyclones or chain of cyclones

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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)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture Of Iron (AREA)

Abstract

본 발명은 용융환원으로 철을 생산하기 위하여 입도 분포가 넓은 분철광석을 예비환원하는 유동층식 철광석 예비 환원로에 관한 것으로써 미분 철광석의 재순환량을 줄이고 가스 이용률을 높혀 철과석의 환원효과를 증대시키고 미분 철광석의 환원효과를 증대시키고 미분 철광석의 재순환량을 줄이고 가스 이용률을 높혀 철광석의 환원효과를 증대시키고 미분 철광석의 환원효과를 증대시키고 미분 철광석의 손실을 방지할 수 있는 유동층식 철광석 예비 환원로를 제공하고자 하는데 그 목적이 있다. 본 발명은 철광석 장입 호퍼로부터 철광석이 공급되어 대립 철광석이 난류 유동층을 형성하면서 환원되도록 구성되는 제1예비 환원로에 제1순환관을 매개로 연통되어 하부로 중/미립 철광석이 공급되어 환원되도록 구성되는 제2예비 환원로를 포함하여 구성되는 유동층식 철광석 예비 환원로에 있어서 상기 제2예비 환원로의 직경이 제1예비 환원로의 직경보다 크고, 그리고 상기 제2예비 환원로내에 비산 방지수단이 형성되어 구성되는 유동층식 철광석 예비 환원로를 그 요지로한다.The present invention relates to a fluidized-bed iron ore preliminary reduction furnace for preliminarily reducing iron ore having a wide particle size distribution in order to produce iron by molten reduction, thereby reducing recirculation of fine iron ores and increasing gas utilization to increase the reduction effect of iron ore. A fluidized-bed iron ore pre-reduction furnace that can increase the reduction effect of fine iron ore, reduce the recirculation of fine iron ore, increase the gas utilization rate, increase the reduction effect of iron ore, increase the reduction effect of fine iron ore, and prevent the loss of fine iron ore. The purpose is to provide. The present invention is configured so that the iron ore is supplied from the iron ore charging hopper is connected to the first preliminary reduction furnace configured to reduce the allele iron ore to form a turbulent fluidized bed through the first circulation pipe to be supplied to reduce the medium / fine iron ore to the bottom In the fluidized-bed iron ore preliminary reduction furnace comprising a second preliminary reduction furnace, the diameter of the second preliminary reduction furnace is larger than the diameter of the first preliminary reduction furnace, and the scattering prevention means in the second preliminary reduction furnace The fluidized-bed iron ore preliminary reduction furnace formed and comprised is made into the summary.

Description

유동층식 철광석 예비 환원로Fluidized Bed Iron Ore Preliminary Reduction Furnace

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

제1도는 종래의 유동층식 예비 환원로의 구성도.1 is a block diagram of a conventional fluidized bed preliminary reduction furnace.

제2도는 본 발명에 부합되는 유동층식 철광석 예비 환원로의 구성도.2 is a block diagram of a fluidized bed iron ore preliminary reduction furnace in accordance with the present invention.

Claims (4)

철광석 장입 호퍼(160)로부터 철광석이 공급되어 대립 철광석이 난류 유동층을 형성하면서 환원되도록 구성되는 제1예비 환원로(10): 상기 제1예비 환원로에 제1순환관(130)을 매개로 연통되어 하부로 중/미립 철광석이 공급되어 환원되도록 구성되는 제2예비 환원로; 상기 제2예비 환원로(120)와 연통되어 제2예비 환원로(120)에서 환원가스와 함께 상승하는 미립광을 포집하여 제1순환관(130)으로 보내도록 구성되는 싸이클론(140); 및 상기 싸이클론(140)과 연통되어 싸이클론(140)으로 부터 환원가스와 함께 배출되는 미립 철광석을 포집하여 미립 철광석 및 환원가스를 각각 미립 광석 배출관(152) 및 환원가스 배출관(151)을 통해 외부로 배출하도록 구성되는 멀티클론(150)을 포함하고; 그리고 상기 제2예비 환원로(120)의 직경이 제1예비 환원로(110)의 직경보다 크고 상기 제2예비 환원로(120)내에 비산 방지수단(124)이 형성되어 구성됨을 특징으로 하는 유동층식 철광석 예비 환원로.Iron ore is supplied from the iron ore charging hopper 160, the first preliminary reduction furnace 10 is configured to reduce the confrontation iron ore to form a turbulent fluidized bed: the first preliminary tube 130 to communicate with the first A second preliminary reduction furnace configured to be supplied with the heavy / fine iron ore to be reduced; A cyclone 140 in communication with the second preliminary reduction furnace 120, configured to collect particulates that rise with the reducing gas in the second preliminary reduction furnace 120 and send them to the first circulation tube 130; And collect the fine iron ore in communication with the cyclone 140 and discharged from the cyclone 140 together with the reducing gas, and collect the fine iron ore and the reducing gas through the fine ore discharge pipe 152 and the reducing gas discharge pipe 151, respectively. A multiclone 150 configured to be discharged to the outside; The fluidized bed is characterized in that the diameter of the second preliminary reduction furnace 120 is larger than the diameter of the first preliminary reduction furnace 110 and the scattering preventing means 124 is formed in the second preliminary reduction furnace 120. Iron ore preliminary reduction furnace. 제1항에 있어서 비산방지수단(124)이 비산 방지판(124a) 및 비산 방지판 지지구(124b)로 이루어짐을 특징으로 하는 유동층식 철광석 예비 환원로.The fluidized bed iron ore preliminary reduction furnace according to claim 1, wherein the shatterproof means (124) comprises a shatterproof plate (124a) and a shatterproof plate support (124b). 제2항에 있어서 비산 방지판(124a)이 삿갓형태인 것을 특징으로 하는 유동층식 철광석 예비 환원로.3. The fluidized-bed iron ore preliminary reduction furnace according to claim 2, wherein the shatterproof plate (124a) has a hat shade. 제1항에서 제3항중 어느 한 항에 있어서 제1예비 환원로(110)의 직경; 제2예비 환원로(120)의 직경비가 1:1.5~1:3인 것을 특징으로 하는 유동층식 철광석 예비 환원로.The diameter of the first preliminary reduction furnace (110) according to any one of claims 1 to 3; Fluidized-bed iron ore preliminary reduction furnace, characterized in that the diameter ratio of the second preliminary reduction furnace 120 is 1: 1.5 ~ 1: 3. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940019090A 1994-08-02 1994-08-02 Iron ore fluidized bed reduction furnace KR970003133B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940019090A KR970003133B1 (en) 1994-08-02 1994-08-02 Iron ore fluidized bed reduction furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940019090A KR970003133B1 (en) 1994-08-02 1994-08-02 Iron ore fluidized bed reduction furnace

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KR960007793A true KR960007793A (en) 1996-03-22
KR970003133B1 KR970003133B1 (en) 1997-03-14

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