EA200100563A1 - Способ снижения содержания азота в расплаве стали в процессе выплавки - Google Patents

Способ снижения содержания азота в расплаве стали в процессе выплавки

Info

Publication number
EA200100563A1
EA200100563A1 EA200100563A EA200100563A EA200100563A1 EA 200100563 A1 EA200100563 A1 EA 200100563A1 EA 200100563 A EA200100563 A EA 200100563A EA 200100563 A EA200100563 A EA 200100563A EA 200100563 A1 EA200100563 A1 EA 200100563A1
Authority
EA
Eurasian Patent Office
Prior art keywords
content
carbon
nitrogen
bath
reducing
Prior art date
Application number
EA200100563A
Other languages
English (en)
Other versions
EA003345B1 (ru
Inventor
Жан-Кристоф Мэльхан
Даниэль Перне
Original Assignee
Усинор
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 Усинор filed Critical Усинор
Publication of EA200100563A1 publication Critical patent/EA200100563A1/ru
Publication of EA003345B1 publication Critical patent/EA003345B1/ru

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
    • 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
    • C21C7/0025—Adding carbon material
    • 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
    • C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/0025—Charging or loading melting furnaces with material in the solid state
    • F27D3/0026—Introducing additives into the melt
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/18—Charging particulate material using a fluid carrier

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (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)

Abstract

Изобретение относится к способу обработки расплава стали в процессе выплавки, при котором внутрь одной и той же зоны ванны расплава вдувают одновременно, но раздельно кислород и углерод в виде, пригодном для вдувания (предпочтительно в виде порошка углерода), для того, чтобы из этих двух элементов локально генерировать в ванне пузырьки CO, которые затем насыщаются азотом, осуществляя снижение содержания азота. Стехиометрическое регулирование подачи углерода и кислорода позволяет производить снижение содержания азота при сохранении постоянного содержания углерода в ванне. Способ предпочтительно применим для производства марок сталей со сверхнизким содержанием углерода, и в особенности в электрической печи.Международная заявка была опубликована вместе с отчетом о международном поиске.
EA200100563A 1998-12-18 1999-12-17 Способ снижения содержания азота в расплаве стали в процессе выплавки EA003345B1 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9816082A FR2787468B1 (fr) 1998-12-18 1998-12-18 Procede de denitruration de l'acier en fusion en cours d'elaboration
PCT/FR1999/003176 WO2000037688A1 (fr) 1998-12-18 1999-12-17 Procede de denitruration de l'acier en fusion en cours d'elaboration

Publications (2)

Publication Number Publication Date
EA200100563A1 true EA200100563A1 (ru) 2001-12-24
EA003345B1 EA003345B1 (ru) 2003-04-24

Family

ID=9534200

Family Applications (1)

Application Number Title Priority Date Filing Date
EA200100563A EA003345B1 (ru) 1998-12-18 1999-12-17 Способ снижения содержания азота в расплаве стали в процессе выплавки

Country Status (24)

Country Link
US (1) US6565622B1 (ru)
EP (1) EP1141422B1 (ru)
JP (1) JP2002533566A (ru)
KR (1) KR20010101205A (ru)
CN (1) CN1329675A (ru)
AT (1) ATE246734T1 (ru)
AU (1) AU756853B2 (ru)
BG (1) BG105612A (ru)
BR (1) BR9916269A (ru)
CA (1) CA2356370A1 (ru)
CZ (1) CZ20012225A3 (ru)
DE (1) DE69910256T2 (ru)
EA (1) EA003345B1 (ru)
ES (1) ES2205916T3 (ru)
FR (1) FR2787468B1 (ru)
HU (1) HUP0104705A3 (ru)
PL (1) PL348064A1 (ru)
RO (1) RO121135B1 (ru)
SI (1) SI20533A (ru)
SK (1) SK7932001A3 (ru)
TR (1) TR200101606T2 (ru)
WO (1) WO2000037688A1 (ru)
YU (1) YU42501A (ru)
ZA (1) ZA200104661B (ru)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050050767A1 (en) * 2003-06-06 2005-03-10 Hanson Kyle M. Wet chemical processing chambers for processing microfeature workpieces
US20050063798A1 (en) * 2003-06-06 2005-03-24 Davis Jeffry Alan Interchangeable workpiece handling apparatus and associated tool for processing microfeature workpieces
US7371306B2 (en) * 2003-06-06 2008-05-13 Semitool, Inc. Integrated tool with interchangeable wet processing components for processing microfeature workpieces
CN112342400A (zh) * 2020-10-14 2021-02-09 潘玉霞 一种五金铸件的精密消气泡铸造工艺
DE102021121472A1 (de) 2021-08-18 2023-02-23 Sms Group Gmbh Elektrolichtbogenofen, Verfahren zum Betrieb eines Elektrolichtbogenofens und Verwendung eines Elektrolichtbogenofens

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE739066A (en) * 1969-09-18 1970-03-18 Electro pneumatic steel
FR2540518B1 (fr) * 1983-02-03 1991-09-06 Siderurgie Fse Inst Rech Procede pour la conduite d'un four metallurgique de fusion et dispositif de mise en oeuvre
JPH0819456B2 (ja) * 1987-02-24 1996-02-28 新日本製鐵株式会社 極低窒素鋼の溶製方法
DE4242328C2 (de) * 1992-12-15 1995-06-08 Alfred Dipl Ing Dr Freissmuth Mittel zur Entschwefelung, Entphosphorung, Entsilicierung und Entstickung von Roheisen- und Gußeisenschmelzen
FR2705767B1 (fr) * 1993-05-27 1995-07-21 Lorraine Laminage Procédé et installation de production d'acier liquide à partir de matières ferreuses riches en matières carbonées.
JPH0726318A (ja) * 1993-07-09 1995-01-27 Kawasaki Steel Corp 製鋼用電気炉の操業方法
JPH09165615A (ja) * 1995-12-14 1997-06-24 Kawasaki Steel Corp 溶融金属の脱窒方法
JPH1112634A (ja) * 1997-06-20 1999-01-19 Nkk Corp アーク炉による低窒素溶鋼の製造方法
LU90154B1 (fr) * 1997-10-17 1999-04-19 Wurth Paul Sa Procede pour la fusion en continu de produits metalliques solides

Also Published As

Publication number Publication date
BG105612A (en) 2002-01-31
EA003345B1 (ru) 2003-04-24
CA2356370A1 (fr) 2000-06-29
FR2787468A1 (fr) 2000-06-23
US6565622B1 (en) 2003-05-20
DE69910256D1 (de) 2003-09-11
AU1664800A (en) 2000-07-12
EP1141422A1 (fr) 2001-10-10
KR20010101205A (ko) 2001-11-14
PL348064A1 (en) 2002-05-06
RO121135B1 (ro) 2006-12-29
DE69910256T2 (de) 2004-07-01
AU756853B2 (en) 2003-01-23
HUP0104705A3 (en) 2002-06-28
YU42501A (sh) 2003-12-31
HUP0104705A2 (hu) 2002-03-28
ZA200104661B (en) 2002-06-07
JP2002533566A (ja) 2002-10-08
SK7932001A3 (en) 2002-01-07
FR2787468B1 (fr) 2001-12-07
SI20533A (sl) 2001-10-31
TR200101606T2 (tr) 2001-10-22
BR9916269A (pt) 2001-09-04
ATE246734T1 (de) 2003-08-15
CZ20012225A3 (cs) 2002-02-13
WO2000037688A1 (fr) 2000-06-29
EP1141422B1 (fr) 2003-08-06
CN1329675A (zh) 2002-01-02
ES2205916T3 (es) 2004-05-01

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Legal Events

Date Code Title Description
MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): AM AZ KZ KG MD TJ TM

MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): BY RU