EP3572534A4 - Entschwefelungsbehandlungsverfahren für geschmolzenen stahl und entschwefelungsmittel - Google Patents

Entschwefelungsbehandlungsverfahren für geschmolzenen stahl und entschwefelungsmittel Download PDF

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Publication number
EP3572534A4
EP3572534A4 EP18741544.3A EP18741544A EP3572534A4 EP 3572534 A4 EP3572534 A4 EP 3572534A4 EP 18741544 A EP18741544 A EP 18741544A EP 3572534 A4 EP3572534 A4 EP 3572534A4
Authority
EP
European Patent Office
Prior art keywords
desulfurization
molten steel
treatment method
agent
desulfurization agent
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.)
Granted
Application number
EP18741544.3A
Other languages
English (en)
French (fr)
Other versions
EP3572534B1 (de
EP3572534A1 (de
Inventor
Yusuke Fujii
Yoshie Nakai
Hideya Masaki
Naoki Kikuchi
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=62908427&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3572534(A4) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by JFE Steel Corp filed Critical JFE Steel Corp
Publication of EP3572534A1 publication Critical patent/EP3572534A1/de
Publication of EP3572534A4 publication Critical patent/EP3572534A4/de
Application granted granted Critical
Publication of EP3572534B1 publication Critical patent/EP3572534B1/de
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/064—Dephosphorising; Desulfurising
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/072—Treatment with gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/076—Use of slags or fluxes as treating agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
EP18741544.3A 2017-01-19 2018-01-10 Entschwefelungsbehandlungsverfahren für geschmolzenen stahl und entschwefelungsmittel Active EP3572534B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017007209 2017-01-19
PCT/JP2018/000280 WO2018135344A1 (ja) 2017-01-19 2018-01-10 溶鋼の脱硫処理方法及び脱硫剤

Publications (3)

Publication Number Publication Date
EP3572534A1 EP3572534A1 (de) 2019-11-27
EP3572534A4 true EP3572534A4 (de) 2019-11-27
EP3572534B1 EP3572534B1 (de) 2021-04-28

Family

ID=62908427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18741544.3A Active EP3572534B1 (de) 2017-01-19 2018-01-10 Entschwefelungsbehandlungsverfahren für geschmolzenen stahl und entschwefelungsmittel

Country Status (7)

Country Link
EP (1) EP3572534B1 (de)
JP (1) JP6743915B2 (de)
KR (1) KR102290861B1 (de)
CN (1) CN110177889B (de)
BR (1) BR112019013592B1 (de)
TW (1) TWI660049B (de)
WO (1) WO2018135344A1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI704232B (zh) * 2019-04-11 2020-09-11 日商日本製鐵股份有限公司 高效率的熔融鐵合金之精煉方法
CN110315064A (zh) * 2019-06-20 2019-10-11 同济大学 一种金属原料纯化处理剂以及纯化处理方法
CN111621620A (zh) * 2020-06-03 2020-09-04 马鞍山市兴达冶金新材料有限公司 一种提高脱硫效率的脱硫工艺
CN112939042A (zh) * 2021-01-29 2021-06-11 重庆坤垠环保科技实业发展有限公司 铝灰渣与硅灰协同处理利用方法及装置
TWI762226B (zh) * 2021-03-05 2022-04-21 國立中興大學 煉鋼用脫硫劑的製備方法
CN113088612A (zh) * 2021-03-15 2021-07-09 石家庄钢铁有限责任公司 利用lf炉进行铁水预处理脱硫的方法
CN113832296B (zh) * 2021-09-30 2022-10-14 广东韶钢松山股份有限公司 一种板坯钢在lf精炼炉内的快速脱硫方法
TWI820759B (zh) * 2022-06-20 2023-11-01 興展技術開發股份有限公司 鋼液脫硫方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6256509A (ja) * 1985-09-04 1987-03-12 Kawasaki Steel Corp 生石灰を用いる溶銑脱硫方法
JPH11221432A (ja) * 1998-02-04 1999-08-17 Nittetsu Mining Co Ltd 石灰石系脱硫剤およびその製造方法
JP2008063647A (ja) * 2006-09-11 2008-03-21 Jfe Steel Kk 溶鋼の脱硫方法
JP2009108344A (ja) * 2007-10-26 2009-05-21 Nippon Steel Corp 溶融金属の脱硫剤
WO2010026775A1 (ja) * 2008-09-05 2010-03-11 新日本製鐵株式会社 溶銑の脱硫方法
EP2434025A1 (de) * 2009-06-30 2012-03-28 JFE Steel Corporation Verfahren zur entschwefelung von geschmolzenem eisen

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6191318A (ja) 1984-10-12 1986-05-09 Nippon Kokan Kk <Nkk> 取鍋精錬炉の操業方法
JPS61281809A (ja) 1985-06-06 1986-12-12 Nippon Steel Corp 溶鋼の取鍋精錬法
JPH0645485B2 (ja) * 1986-05-29 1994-06-15 川崎製鉄株式会社 反応性に優れた精錬剤用の生石灰の製造方法
JPH08260025A (ja) 1995-03-24 1996-10-08 Sumitomo Metal Ind Ltd 極低硫極低酸素鋼の製造方法
JPH09217110A (ja) 1996-02-14 1997-08-19 Sumitomo Metal Ind Ltd 超低硫鋼の溶製方法
JP2000234119A (ja) 1999-02-09 2000-08-29 Kawasaki Steel Corp 鋼の脱硫方法
JP2004225059A (ja) * 2002-11-28 2004-08-12 Nippon Steel Corp 溶銑の脱硫方法
JP5333536B2 (ja) * 2011-07-22 2013-11-06 新日鐵住金株式会社 高清浄度軸受鋼およびその溶製方法
CN102337370B (zh) * 2011-10-26 2013-05-01 辽宁博联特冶金科技有限公司 一种冶炼工业纯铁的装置及方法
CN102517418B (zh) * 2011-12-12 2013-06-05 中北大学 一种多孔颗粒状低碳石灰及其生产方法
JP6451363B2 (ja) * 2015-02-04 2019-01-16 新日鐵住金株式会社 溶鋼の脱硫方法
BR112018001331B1 (pt) * 2015-07-24 2021-09-28 Jfe Steel Corporation Fluxo de dessulfurização, método para dessulfurizar metal quente e método para produzir metal quente
JP6402762B2 (ja) * 2015-10-05 2018-10-10 Ｊｆｅスチール株式会社 脱硫剤、機械攪拌式溶銑脱硫方法及び脱硫溶銑の製造方法
JP6369516B2 (ja) * 2015-10-05 2018-08-08 Ｊｆｅスチール株式会社 機械攪拌式溶銑脱硫方法
CN105274272A (zh) * 2015-11-27 2016-01-27 马鞍山钢铁股份有限公司 一种复合喷吹铁水脱硫材料及其调节装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6256509A (ja) * 1985-09-04 1987-03-12 Kawasaki Steel Corp 生石灰を用いる溶銑脱硫方法
JPH11221432A (ja) * 1998-02-04 1999-08-17 Nittetsu Mining Co Ltd 石灰石系脱硫剤およびその製造方法
JP2008063647A (ja) * 2006-09-11 2008-03-21 Jfe Steel Kk 溶鋼の脱硫方法
JP2009108344A (ja) * 2007-10-26 2009-05-21 Nippon Steel Corp 溶融金属の脱硫剤
WO2010026775A1 (ja) * 2008-09-05 2010-03-11 新日本製鐵株式会社 溶銑の脱硫方法
EP2434025A1 (de) * 2009-06-30 2012-03-28 JFE Steel Corporation Verfahren zur entschwefelung von geschmolzenem eisen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2018135344A1 *

Also Published As

Publication number Publication date
TWI660049B (zh) 2019-05-21
EP3572534B1 (de) 2021-04-28
KR102290861B1 (ko) 2021-08-17
CN110177889A (zh) 2019-08-27
JPWO2018135344A1 (ja) 2019-06-27
TW201829790A (zh) 2018-08-16
JP6743915B2 (ja) 2020-08-19
WO2018135344A1 (ja) 2018-07-26
KR20190108136A (ko) 2019-09-23
BR112019013592A2 (pt) 2020-01-07
EP3572534A1 (de) 2019-11-27
BR112019013592B1 (pt) 2022-08-16
CN110177889B (zh) 2021-06-11

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