EP3954787A4 - Procédé de raffinage d'alliage de fer fondu hautement efficace - Google Patents

Procédé de raffinage d'alliage de fer fondu hautement efficace Download PDF

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Publication number
EP3954787A4
EP3954787A4 EP19924226.4A EP19924226A EP3954787A4 EP 3954787 A4 EP3954787 A4 EP 3954787A4 EP 19924226 A EP19924226 A EP 19924226A EP 3954787 A4 EP3954787 A4 EP 3954787A4
Authority
EP
European Patent Office
Prior art keywords
molten iron
highly efficient
iron alloy
refining method
alloy refining
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.)
Pending
Application number
EP19924226.4A
Other languages
German (de)
English (en)
Other versions
EP3954787A1 (fr
Inventor
Naoto Sasaki
Michitaka Matsuo
Kenichiro Naito
Sohichi Niino
Koji Morita
Takehiko Toh
Masamitsu Wakoh
Kazuo Onuki
Hiroshi Hirata
S. I. Semykin
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.)
Nippon Steel Corp
Z I Nekrasov Iron & Steel Institute Of National Academy Of Sciences Of Ukraine
Original Assignee
Nippon Steel Corp
Z I Nekrasov Iron & Steel Institute Of National Academy Of Sciences Of Ukraine
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 Nippon Steel Corp, Z I Nekrasov Iron & Steel Institute Of National Academy Of Sciences Of Ukraine filed Critical Nippon Steel Corp
Publication of EP3954787A1 publication Critical patent/EP3954787A1/fr
Publication of EP3954787A4 publication Critical patent/EP3954787A4/fr
Pending legal-status Critical Current

Links

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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/36—Processes yielding slags of special composition
    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing
    • C21C5/32—Blowing from above
    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/5229—Manufacture of steel in electric furnaces in a direct current [DC] electric arc furnace
    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/5264—Manufacture of alloyed steels including ferro-alloys
    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/54—Processes yielding slags of special composition
    • 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
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • 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
    • C21C2250/00—Specific additives; Means for adding material different from burners or lances
    • C21C2250/06—Hollow electrode
    • 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
    • C21C2300/00—Process aspects
    • C21C2300/08—Particular sequence of the process steps
    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/48—Bottoms or tuyéres of converters
EP19924226.4A 2019-04-11 2019-04-11 Procédé de raffinage d'alliage de fer fondu hautement efficace Pending EP3954787A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/015737 WO2020208768A1 (fr) 2019-04-11 2019-04-11 Procédé de raffinage d'alliage de fer fondu hautement efficace

Publications (2)

Publication Number Publication Date
EP3954787A1 EP3954787A1 (fr) 2022-02-16
EP3954787A4 true EP3954787A4 (fr) 2022-11-30

Family

ID=72751161

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19924226.4A Pending EP3954787A4 (fr) 2019-04-11 2019-04-11 Procédé de raffinage d'alliage de fer fondu hautement efficace

Country Status (6)

Country Link
EP (1) EP3954787A4 (fr)
JP (1) JP7158570B2 (fr)
KR (1) KR102483106B1 (fr)
CN (1) CN113631729B (fr)
UA (1) UA128009C2 (fr)
WO (1) WO2020208768A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH073323A (ja) * 1993-06-21 1995-01-06 Voest Alpine Ind Anlagen Gmbh 鋼の生産のための転炉
JPH09227918A (ja) * 1996-02-20 1997-09-02 Nippon Steel Corp ステンレス鋼溶製方法
CA3046587A1 (fr) * 2016-12-16 2018-06-21 Nippon Steel Corporation Four electrique

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6117409Y2 (fr) * 1978-12-27 1986-05-28
JPH0791574B2 (ja) * 1992-09-29 1995-10-04 川崎重工業株式会社 溶融精錬炉の原料投入方法および装置
JP3717625B2 (ja) * 1997-02-05 2005-11-16 日新製鋼株式会社 電気アーク炉スラグの還元方法
JP3332010B2 (ja) 1998-06-18 2002-10-07 日本鋼管株式会社 低燐溶銑の製造方法
JP2002371311A (ja) 2001-04-13 2002-12-26 Osaka Koukai Kk 溶湯の脱燐法とそれに用いられる低温滓化性脱燐剤およびその製造法
JP4388482B2 (ja) 2005-01-18 2009-12-24 新日本製鐵株式会社 スラグの処理方法
CN101165196B (zh) * 2006-10-19 2010-12-08 中国恩菲工程技术有限公司 一种采用氧气底吹炉连续炼铜的工艺及其装置
JP2008266669A (ja) * 2007-04-16 2008-11-06 Jfe Steel Kk 竪型炉内の溶融物レベル計測方法及び計測装置
CN103370426B (zh) 2011-02-10 2014-10-15 新日铁住金株式会社 铁液的脱硅和脱磷方法
JP5720497B2 (ja) 2011-08-25 2015-05-20 Ｊｆｅスチール株式会社 製鋼スラグからの鉄及び燐の回収方法
CN103408013B (zh) * 2013-08-03 2015-06-24 石家庄新华能源环保科技股份有限公司 一种氧电结合电石炉
JP6164151B2 (ja) 2014-05-14 2017-07-19 Ｊｆｅスチール株式会社 転炉型精錬炉による溶鉄の精錬方法
JP6413710B2 (ja) 2014-12-02 2018-10-31 新日鐵住金株式会社 直流アーク式電気炉による高純度鋼の製造方法
CN109097651B (zh) * 2018-08-09 2019-06-28 徐州宏阳新材料科技有限公司 一种低磷高碳铬铁及其冶炼方法
CN109097522B (zh) 2018-09-30 2020-04-10 武钢集团昆明钢铁股份有限公司 一种中高锰高磷低硅铁水提高终点钢水残锰的转炉冶炼方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH073323A (ja) * 1993-06-21 1995-01-06 Voest Alpine Ind Anlagen Gmbh 鋼の生産のための転炉
JPH09227918A (ja) * 1996-02-20 1997-09-02 Nippon Steel Corp ステンレス鋼溶製方法
CA3046587A1 (fr) * 2016-12-16 2018-06-21 Nippon Steel Corporation Four electrique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2020208768A1 *

Also Published As

Publication number Publication date
JPWO2020208768A1 (fr) 2020-10-15
KR20210127986A (ko) 2021-10-25
CN113631729B (zh) 2022-09-20
JP7158570B2 (ja) 2022-10-21
UA128009C2 (uk) 2024-03-06
EP3954787A1 (fr) 2022-02-16
CN113631729A (zh) 2021-11-09
KR102483106B1 (ko) 2023-01-02
WO2020208768A1 (fr) 2020-10-15

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