BR112022021841A2 - Método de operação de alto-forno - Google Patents

Método de operação de alto-forno

Info

Publication number
BR112022021841A2
BR112022021841A2 BR112022021841A BR112022021841A BR112022021841A2 BR 112022021841 A2 BR112022021841 A2 BR 112022021841A2 BR 112022021841 A BR112022021841 A BR 112022021841A BR 112022021841 A BR112022021841 A BR 112022021841A BR 112022021841 A2 BR112022021841 A2 BR 112022021841A2
Authority
BR
Brazil
Prior art keywords
blast furnace
furnace
blast
air
coke
Prior art date
Application number
BR112022021841A
Other languages
English (en)
Inventor
Ichikawa Kazuhira
Hayasaka Yasukazu
Kitamura Yohei
Ishiwata Natsuo
Original Assignee
Jfe Steel Corp
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 Jfe Steel Corp filed Critical Jfe Steel Corp
Priority claimed from PCT/JP2021/016163 external-priority patent/WO2021230027A1/ja
Publication of BR112022021841A2 publication Critical patent/BR112022021841A2/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B9/00—Stoves for heating the blast in blast furnaces
    • C21B9/08—Iron hot-blast stoves
    • 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
    • C21B7/00—Blast furnaces
    • C21B7/12—Opening or sealing the tap holes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres
    • 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
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/16—Arrangements of tuyeres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Blast Furnaces (AREA)
  • Manufacture Of Iron (AREA)

Abstract

MÉTODO DE OPERAÇÃO DE ALTO-FORNO. A presente invenção refere-se a um método de operação de alto-forno que permite que um alto-forno inicie suavemente e realize a operação após a suspensão do sopro de ar ao remover tanto quanto possível de coque residual que permanece dentro do forno durante a suspensão do sopro de ar e se torna um obstáculo para a descarga da matéria solidificada. Neste método de operação de alto-forno, o sopro de ar é suspenso com a altura de uma superfície de uma camada cheia de matéria-prima imediatamente acima de uma ventaneira de alto-forno reduzida abaixo da altura de uma extremidade superior de uma rampa de alto-forno (blast-furnace bosh) e, então, o sopro de ar é retomado. Depois que a sopro de ar no alto-forno é suspenso, oxigênio ou oxigênio e um gás combustível são soprados através de um incinerador inserido em um furo de corrida para queimar o coque que permanece dentro do forno e reduzir o volume de resíduos dentro do forno, e depois que o novo coque é carregado para uma região onde o volume diminuiu, o ar é soprado através de uma ventaneira.
BR112022021841A 2020-05-15 2021-04-21 Método de operação de alto-forno BR112022021841A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020085674 2020-05-15
PCT/JP2021/016163 WO2021230027A1 (ja) 2020-05-15 2021-04-21 高炉操業方法

Publications (1)

Publication Number Publication Date
BR112022021841A2 true BR112022021841A2 (pt) 2022-12-20

Family

ID=78001282

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112022021841A BR112022021841A2 (pt) 2020-05-15 2021-04-21 Método de operação de alto-forno

Country Status (6)

Country Link
US (1) US20230175085A1 (pt)
EP (1) EP4151753A4 (pt)
JP (1) JP6947345B1 (pt)
KR (1) KR20220158103A (pt)
CN (1) CN115516113B (pt)
BR (1) BR112022021841A2 (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7306421B2 (ja) * 2020-05-15 2023-07-11 Ｊｆｅスチール株式会社 高炉の休風立ち上げ方法
CN114410865B (zh) * 2021-12-30 2023-04-07 济南荣庆节能技术有限公司 利用高炉风口位置向炉缸中心下部吹氧的方法
CN114438268A (zh) * 2022-02-11 2022-05-06 山东钢铁集团永锋临港有限公司 一种处理高炉炉缸冻结的烧开装置及烧开方法
JPWO2023233957A1 (pt) * 2022-05-31 2023-12-07

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05171231A (ja) * 1991-12-26 1993-07-09 Kawasaki Steel Corp 高炉の炉芯活性法
JP5835076B2 (ja) 2012-04-17 2015-12-24 新日鐵住金株式会社 高炉炉底部の装入物及び残留物の昇温方法
KR101428209B1 (ko) * 2012-11-12 2014-08-08 주식회사 포스코 산소랜싱 파이프장치
JP5904344B2 (ja) 2014-07-25 2016-04-13 Ｊｆｅスチール株式会社 高炉の送風開始方法および炉床部昇温用バーナー
JP6544175B2 (ja) * 2015-09-24 2019-07-17 日本製鉄株式会社 高炉炉底部における装入物および炉内残留物の昇温方法
CN105368995B (zh) * 2015-10-10 2018-03-06 首钢水城钢铁（集团）有限责任公司 一种高炉事故下的炉料置换方法
JP6602254B2 (ja) * 2016-04-22 2019-11-06 株式会社神戸製鋼所 高炉休風方法
CN105755192A (zh) * 2016-04-29 2016-07-13 河北钢铁股份有限公司承德分公司 大中型高炉的高效扒炉方法及用于扒炉的铁口氧枪
CN107254560A (zh) * 2017-05-12 2017-10-17 江苏金基特钢有限公司 处理高炉炉缸冻结的方法及使用的铁口氧枪

Also Published As

Publication number Publication date
EP4151753A1 (en) 2023-03-22
US20230175085A1 (en) 2023-06-08
EP4151753A4 (en) 2023-11-01
KR20220158103A (ko) 2022-11-29
JPWO2021230027A1 (pt) 2021-11-18
CN115516113A (zh) 2022-12-23
JP6947345B1 (ja) 2021-10-13
CN115516113B (zh) 2024-05-14

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