EP3572534A4 - Desulfurization treatment method for molten steel, and desulfurization agent - Google Patents

Desulfurization treatment method for molten steel, and desulfurization agent 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
German (de)
French (fr)
Other versions
EP3572534B1 (en
EP3572534A1 (en
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
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Application filed by JFE Steel Corp filed Critical JFE Steel Corp
Publication of EP3572534A4 publication Critical patent/EP3572534A4/en
Publication of EP3572534A1 publication Critical patent/EP3572534A1/en
Application granted granted Critical
Publication of EP3572534B1 publication Critical patent/EP3572534B1/en
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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 Desulfurization processing method of molten steel, and desulfurization agent Active EP3572534B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017007209 2017-01-19
PCT/JP2018/000280 WO2018135344A1 (en) 2017-01-19 2018-01-10 Desulfurization treatment method for molten steel, and desulfurization agent

Publications (3)

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

Family

ID=62908427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18741544.3A Active EP3572534B1 (en) 2017-01-19 2018-01-10 Desulfurization processing method of molten steel, and desulfurization agent

Country Status (7)

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

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI704232B (en) * 2019-04-11 2020-09-11 日商日本製鐵股份有限公司 Method for refining molten iron alloy excellent in efficiency
CN110315064A (en) * 2019-06-20 2019-10-11 同济大学 A kind of raw metal purification process agent and purification treating method
CN111621620A (en) * 2020-06-03 2020-09-04 马鞍山市兴达冶金新材料有限公司 Desulfurization process for improving desulfurization efficiency
CN112939042A (en) * 2021-01-29 2021-06-11 重庆坤垠环保科技实业发展有限公司 Method and device for cooperatively treating and utilizing aluminum ash and silica fume
TWI762226B (en) * 2021-03-05 2022-04-21 國立中興大學 Preparation method of desulfurizer for steelmaking
CN113088612A (en) * 2021-03-15 2021-07-09 石家庄钢铁有限责任公司 Method for pretreating and desulfurizing molten iron by using LF (ladle furnace)
CN113832296B (en) * 2021-09-30 2022-10-14 广东韶钢松山股份有限公司 Rapid desulfurization method of slab steel in LF refining furnace
TWI820759B (en) * 2022-06-20 2023-11-01 興展技術開發股份有限公司 Liquid steel desulfurization method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6256509A (en) * 1985-09-04 1987-03-12 Kawasaki Steel Corp Method for desulfurizing molten iron by using quicklime
JPH11221432A (en) * 1998-02-04 1999-08-17 Nittetsu Mining Co Ltd Limestone type desulfurization agent and production of desulfurization agent
JP2008063647A (en) * 2006-09-11 2008-03-21 Jfe Steel Kk Method for desulfurizing molten steel
JP2009108344A (en) * 2007-10-26 2009-05-21 Nippon Steel Corp Desulfurizing agent for molten metal
WO2010026775A1 (en) * 2008-09-05 2010-03-11 新日本製鐵株式会社 Process for desulfurization of molten pig iron
EP2434025A1 (en) * 2009-06-30 2012-03-28 JFE Steel Corporation Method of desulfurization of molten iron

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6191318A (en) 1984-10-12 1986-05-09 Nippon Kokan Kk <Nkk> Operating method of ladle refining furnace
JPS61281809A (en) 1985-06-06 1986-12-12 Nippon Steel Corp Ladle refining method for molten steel
JPH0645485B2 (en) * 1986-05-29 1994-06-15 川崎製鉄株式会社 Method for producing quicklime for refining agent having excellent reactivity
JPH08260025A (en) 1995-03-24 1996-10-08 Sumitomo Metal Ind Ltd Production of extra low-sulfur and extra low oxygen steel
JPH09217110A (en) 1996-02-14 1997-08-19 Sumitomo Metal Ind Ltd Method for melting extra-low sulfur steel
JP2000234119A (en) 1999-02-09 2000-08-29 Kawasaki Steel Corp Method for desulfurizing steel
JP2004225059A (en) * 2002-11-28 2004-08-12 Nippon Steel Corp Method for desulfurizing molten pig iron
JP5333536B2 (en) * 2011-07-22 2013-11-06 新日鐵住金株式会社 High cleanliness bearing steel and its melting method
CN102337370B (en) * 2011-10-26 2013-05-01 辽宁博联特冶金科技有限公司 Device and method for smelting industrial pure iron
CN102517418B (en) * 2011-12-12 2013-06-05 中北大学 Porous granular low carbon lime and production method thereof
JP6451363B2 (en) * 2015-02-04 2019-01-16 新日鐵住金株式会社 Desulfurization method for molten steel
EP3327150B1 (en) * 2015-07-24 2019-12-25 JFE Steel Corporation Desulfurizing agent, method for desulfurizing molten iron and method for producing molten iron
JP6402762B2 (en) * 2015-10-05 2018-10-10 Ｊｆｅスチール株式会社 Desulfurization agent, mechanical stirring type hot metal desulfurization method and method
JP6369516B2 (en) * 2015-10-05 2018-08-08 Ｊｆｅスチール株式会社 Mechanical stirring type hot metal desulfurization method
CN105274272A (en) * 2015-11-27 2016-01-27 马鞍山钢铁股份有限公司 Compound jetting molten iron desulphurization material and adjusting device thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6256509A (en) * 1985-09-04 1987-03-12 Kawasaki Steel Corp Method for desulfurizing molten iron by using quicklime
JPH11221432A (en) * 1998-02-04 1999-08-17 Nittetsu Mining Co Ltd Limestone type desulfurization agent and production of desulfurization agent
JP2008063647A (en) * 2006-09-11 2008-03-21 Jfe Steel Kk Method for desulfurizing molten steel
JP2009108344A (en) * 2007-10-26 2009-05-21 Nippon Steel Corp Desulfurizing agent for molten metal
WO2010026775A1 (en) * 2008-09-05 2010-03-11 新日本製鐵株式会社 Process for desulfurization of molten pig iron
EP2434025A1 (en) * 2009-06-30 2012-03-28 JFE Steel Corporation Method of desulfurization of molten iron

Non-Patent Citations (1)

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

Also Published As

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

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