EP2054533A4 - A ferro-alloy inserting apparatus with reduced absorption of oxygen and absorption of nitrogen and inserting method thereof - Google Patents

A ferro-alloy inserting apparatus with reduced absorption of oxygen and absorption of nitrogen and inserting method thereof

Info

Publication number
EP2054533A4
EP2054533A4 EP06824112A EP06824112A EP2054533A4 EP 2054533 A4 EP2054533 A4 EP 2054533A4 EP 06824112 A EP06824112 A EP 06824112A EP 06824112 A EP06824112 A EP 06824112A EP 2054533 A4 EP2054533 A4 EP 2054533A4
Authority
EP
European Patent Office
Prior art keywords
absorption
ferro
nitrogen
oxygen
alloy
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.)
Withdrawn
Application number
EP06824112A
Other languages
German (de)
French (fr)
Other versions
EP2054533A1 (en
Inventor
Ki Kun Hong
Sung Woan Cho
Hee Ho Lee
Dong Sik Kim
Joo Hyun Park
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.)
Posco Holdings Inc
Original Assignee
Posco Co Ltd
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
Priority claimed from KR1020060079693A external-priority patent/KR100812018B1/en
Priority claimed from KR1020060079692A external-priority patent/KR100812017B1/en
Application filed by Posco Co Ltd filed Critical Posco Co Ltd
Publication of EP2054533A1 publication Critical patent/EP2054533A1/en
Publication of EP2054533A4 publication Critical patent/EP2054533A4/en
Withdrawn legal-status Critical Current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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0006—Adding metallic additives
    • 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
    • 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
    • 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
    • F27D3/16—Introducing a fluid jet or current into the charge
    • 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
    • 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
    • C21C2300/06—Modeling of the process, e.g. for control purposes; CII
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (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)
  • Furnace Charging Or Discharging (AREA)
EP06824112A 2006-08-23 2006-12-12 A ferro-alloy inserting apparatus with reduced absorption of oxygen and absorption of nitrogen and inserting method thereof Withdrawn EP2054533A4 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020060079693A KR100812018B1 (en) 2006-08-23 2006-08-23 Apparatus with spreading part for inserting ferro-alloy
KR1020060079692A KR100812017B1 (en) 2006-08-23 2006-08-23 Method for laddle treatment
PCT/KR2006/005406 WO2008023863A1 (en) 2006-08-23 2006-12-12 A ferro-alloy inserting apparatus with reduced absorption of oxygen and absorption of nitrogen and inserting method thereof

Publications (2)

Publication Number Publication Date
EP2054533A1 EP2054533A1 (en) 2009-05-06
EP2054533A4 true EP2054533A4 (en) 2009-12-30

Family

ID=39106930

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06824112A Withdrawn EP2054533A4 (en) 2006-08-23 2006-12-12 A ferro-alloy inserting apparatus with reduced absorption of oxygen and absorption of nitrogen and inserting method thereof

Country Status (3)

Country Link
EP (1) EP2054533A4 (en)
JP (1) JP5079005B2 (en)
WO (1) WO2008023863A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101853769B1 (en) * 2016-08-29 2018-05-02 주식회사 포스코 Manufacturing method of alloy steel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2858125A (en) * 1955-02-01 1958-10-28 Air Reduction Reagent feeding apparatus
DE1433464A1 (en) * 1962-04-16 1968-11-28 Combustion Eng Process for the production of cast steel or cast iron
US3880411A (en) * 1973-08-24 1975-04-29 Natalya Alexandrovna Voronova Device for treatment of molten cast iron in vessels

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS579821A (en) * 1980-06-18 1982-01-19 Kawasaki Steel Corp Method of addition of auxiliary raw material or the like into ladle
JPS6345674Y2 (en) * 1986-05-12 1988-11-28
JPH059552A (en) 1991-07-09 1993-01-19 Nippon Steel Corp Top blowing lance type ladle refining apparatus
US5211744A (en) 1991-10-02 1993-05-18 Premelt Systems, Inc. Method and means for improving molten metal furnace charging efficiency
US5705123A (en) * 1994-12-15 1998-01-06 Hayes Wheels International, Inc. Metal chip reclamation system
US5919283A (en) * 1996-11-06 1999-07-06 Premelt Pump, Inc. Method and apparatus for introducing metal chips into molten metal bath
US6409962B1 (en) * 2000-10-02 2002-06-25 Rossborough Manufacturing Co. Powder injector for ladle
JP3867683B2 (en) * 2003-06-09 2007-01-10 住友金属工業株式会社 Molten steel refining equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2858125A (en) * 1955-02-01 1958-10-28 Air Reduction Reagent feeding apparatus
DE1433464A1 (en) * 1962-04-16 1968-11-28 Combustion Eng Process for the production of cast steel or cast iron
US3880411A (en) * 1973-08-24 1975-04-29 Natalya Alexandrovna Voronova Device for treatment of molten cast iron in vessels

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2008023863A1 *

Also Published As

Publication number Publication date
WO2008023863A1 (en) 2008-02-28
JP2010501726A (en) 2010-01-21
JP5079005B2 (en) 2012-11-21
EP2054533A1 (en) 2009-05-06

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 20090219

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AX Request for extension of the european patent

Extension state: AL BA HR MK RS

RBV Designated contracting states (corrected)

Designated state(s): DE FR SE

A4 Supplementary search report drawn up and despatched

Effective date: 20091130

RIC1 Information provided on ipc code assigned before grant

Ipc: F27D 3/18 20060101ALI20091124BHEP

Ipc: F27D 3/16 20060101ALI20091124BHEP

Ipc: C21C 7/00 20060101AFI20080403BHEP

17Q First examination report despatched

Effective date: 20100908

STAA Information on the status of an ep patent application or granted ep patent

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18W Application withdrawn

Effective date: 20111116