EP2871247B1 - Verfahren zum betrieb eines hochofens - Google Patents

Verfahren zum betrieb eines hochofens Download PDF

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Publication number
EP2871247B1
EP2871247B1 EP13813190.9A EP13813190A EP2871247B1 EP 2871247 B1 EP2871247 B1 EP 2871247B1 EP 13813190 A EP13813190 A EP 13813190A EP 2871247 B1 EP2871247 B1 EP 2871247B1
Authority
EP
European Patent Office
Prior art keywords
pulverized coal
lance
furnace
volatile matter
combustion
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP13813190.9A
Other languages
English (en)
French (fr)
Other versions
EP2871247A1 (de
EP2871247A4 (de
Inventor
Daiki Fujiwara
Akinori Murao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
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
Publication of EP2871247A1 publication Critical patent/EP2871247A1/de
Publication of EP2871247A4 publication Critical patent/EP2871247A4/de
Application granted granted Critical
Publication of EP2871247B1 publication Critical patent/EP2871247B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres
    • C21B7/163—Blowpipe assembly

Landscapes

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

Claims (2)

  1. Verfahren zum Betrieb eines Hochofens, in dem ein festes Reduktionsmaterial von einem oberen Teil des Ofens aus chargiert wird und des Weiteren aus einer Windform über eine Lanze eingeblasen wird, wobei das aus der Windform eingeblasene feste Reduktionsmaterial pulverisierte Kohle ist, die einen durchschnittlichen volatilen Massenanteil von mehr als 25 Massen% und nicht mehr als 50 Massen% aufweist, die Einblasmenge der pulverisierten Kohle, die aus der Windform eingeblasen wird, nicht weniger als 150kg/t pro Tonne Roheisen beträgt, und eine Doppelrohrlanze als Lanze verwendet wird, um die pulverisierte Kohle aus einem Innenrohr und Sauerstoff mit nicht mehr als 100°C von zwischen dem Innenrohr und einem Außenrohr aus einzublasen und wobei das von einem oberen Teil des Ofens chargierte feste Reduktionsmaterial Koks ist, das eine Festigkeit: [DI15015 [%] ] von nicht mehr als 85, gemessen durch ein in JIS K2151 beschriebenes Testverfahren, aufweist.
  2. Verfahren zum Betrieb eines Hochofens gemäß Anspruch 1, wobei das Verfahren ein Material als die aus der Windform eingeblasene pulverisierte Kohle verwendet, das nicht weniger als 10 Massen% pulverisierte Kohle mit einem durchschnittlichen volatilen Massenanteil von 30 Massen% bis 60 Massen% enthält.
EP13813190.9A 2012-07-03 2013-06-28 Verfahren zum betrieb eines hochofens Active EP2871247B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2012149384 2012-07-03
JP2013077526 2013-04-03
PCT/JP2013/067788 WO2014007152A1 (ja) 2012-07-03 2013-06-28 高炉操業方法

Publications (3)

Publication Number Publication Date
EP2871247A1 EP2871247A1 (de) 2015-05-13
EP2871247A4 EP2871247A4 (de) 2015-08-05
EP2871247B1 true EP2871247B1 (de) 2017-05-10

Family

ID=49881908

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13813190.9A Active EP2871247B1 (de) 2012-07-03 2013-06-28 Verfahren zum betrieb eines hochofens

Country Status (6)

Country Link
EP (1) EP2871247B1 (de)
JP (1) JP5522325B1 (de)
KR (1) KR101608231B1 (de)
CN (1) CN104379770B (de)
AU (1) AU2013284587B2 (de)
WO (1) WO2014007152A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6061107B2 (ja) * 2014-02-17 2017-01-18 Ｊｆｅスチール株式会社 高炉操業方法
JP6337613B2 (ja) * 2014-05-23 2018-06-06 新日鐵住金株式会社 高炉の操業方法
KR20180119713A (ko) * 2014-08-27 2018-11-02 제이에프이 스틸 가부시키가이샤 산소 고로로의 미분탄 취입 방법
CN108265141B (zh) * 2018-03-01 2019-10-08 东北大学 一种垂直两段式高炉喷吹煤粉装置
CN108220515B (zh) * 2018-03-01 2019-09-03 东北大学 一种垂直两段式高炉喷吹煤粉方法
CN108265146B (zh) * 2018-03-01 2019-09-03 东北大学 一种改善高炉内煤气流分布的垂直式装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4490171A (en) * 1982-03-31 1984-12-25 Kobe Steel, Limited Method and apparatus for injecting pulverized fuel into a blast furnace
JPS6043403B2 (ja) * 1982-03-31 1985-09-27 新日本製鐵株式会社 微粉炭吹込みによる高炉操炉方法
GB8506655D0 (en) * 1985-03-14 1985-04-17 British Steel Corp Smelting shaft furnaces
US4844737A (en) * 1986-12-27 1989-07-04 Nippon Kokan Kabushiki Kaisha Method for operating a blast furnance by blowing pulverized coal
BE1000893A7 (fr) * 1987-09-04 1989-05-09 Centre Rech Metallurgique Procede pour la reduction des minerais au four a cuve.
CN2219896Y (zh) * 1995-02-24 1996-02-14 冶金工业部钢铁研究总院 高炉风口氧煤燃烧器
JPH08260010A (ja) 1995-03-24 1996-10-08 Nippon Steel Corp 高炉における微粉炭多量吹込み操業方法
JPH10310808A (ja) * 1997-05-08 1998-11-24 Nkk Corp 高炉操業方法
JP3644856B2 (ja) 1999-10-20 2005-05-11 株式会社神戸製鋼所 高炉への補助燃料吹込み操業方法
JP4224218B2 (ja) 2001-02-15 2009-02-12 新日本製鐵株式会社 高炉での低揮発分炭の使用方法
JP4074467B2 (ja) 2002-03-29 2008-04-09 新日本製鐵株式会社 高炉での低揮発分微粉炭の燃焼性向上方法
JP4109591B2 (ja) * 2003-09-08 2008-07-02 新日本製鐵株式会社 微粉炭の輸送装置及びその輸送方法
JP5070706B2 (ja) 2005-01-31 2012-11-14 Ｊｆｅスチール株式会社 高炉操業方法
JP4894989B2 (ja) * 2005-03-01 2012-03-14 Ｊｆｅスチール株式会社 高炉操業方法
JP2011127176A (ja) * 2009-12-17 2011-06-30 Kobe Steel Ltd 高炉の操業方法
LU91691B1 (en) * 2010-05-26 2011-11-28 Wurth Paul Sa Tuyere stock arrangement of a blast furnace

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2871247A1 (de) 2015-05-13
AU2013284587A1 (en) 2015-02-19
CN104379770B (zh) 2016-08-17
KR101608231B1 (ko) 2016-04-01
JPWO2014007152A1 (ja) 2016-06-02
KR20150023045A (ko) 2015-03-04
WO2014007152A1 (ja) 2014-01-09
EP2871247A4 (de) 2015-08-05
AU2013284587B2 (en) 2015-05-14
JP5522325B1 (ja) 2014-06-18
CN104379770A (zh) 2015-02-25

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