FI19992549A - Process and system for producing low nitrogen steel - Google Patents

Process and system for producing low nitrogen steel

Info

Publication number
FI19992549A
FI19992549A FI992549A FI19992549A FI19992549A FI 19992549 A FI19992549 A FI 19992549A FI 992549 A FI992549 A FI 992549A FI 19992549 A FI19992549 A FI 19992549A FI 19992549 A FI19992549 A FI 19992549A
Authority
FI
Finland
Prior art keywords
low nitrogen
producing low
nitrogen steel
steel
producing
Prior art date
Application number
FI992549A
Other languages
Finnish (fi)
Swedish (sv)
Inventor
Peter Zasowski
Rama Bommaraju
Original Assignee
Ag Industries Inc
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 Ag Industries Inc filed Critical Ag Industries Inc
Publication of FI19992549A publication Critical patent/FI19992549A/en

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
    • 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
    • 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/04—Removing impurities other than carbon, phosphorus or sulfur
    • 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
    • C21C5/4606—Lances or injectors
    • 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
    • C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
    • 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)
  • Manufacturing & Machinery (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
FI992549A 1997-05-30 1999-11-29 Process and system for producing low nitrogen steel FI19992549A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US86617397A 1997-05-30 1997-05-30
US97977197A 1997-11-26 1997-11-26
PCT/US1998/011528 WO1998054369A1 (en) 1997-05-30 1998-05-29 Method and article for introducing denitrogenizing flux into molten metal

Publications (1)

Publication Number Publication Date
FI19992549A true FI19992549A (en) 1999-11-29

Family

ID=27127935

Family Applications (1)

Application Number Title Priority Date Filing Date
FI992549A FI19992549A (en) 1997-05-30 1999-11-29 Process and system for producing low nitrogen steel

Country Status (11)

Country Link
JP (1) JP2002501578A (en)
KR (1) KR20010013178A (en)
CN (1) CN1084793C (en)
AU (1) AU743299B2 (en)
BR (1) BR9809184A (en)
CA (1) CA2292591A1 (en)
DE (1) DE19882438T1 (en)
ES (1) ES2168934B1 (en)
FI (1) FI19992549A (en)
GB (1) GB2340132A (en)
WO (1) WO1998054369A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2422618A (en) * 2005-01-28 2006-08-02 Injection Alloys Ltd Molten metal refining wire
WO2009028924A1 (en) * 2007-08-29 2009-03-05 Jack Victor Nyrup Aguilar Ionising compound serving as an electric arc stabiliser
KR101017482B1 (en) * 2008-09-29 2011-02-25 현대제철 주식회사 Refining method of boron-addes molten steel for thin slab
CN102277467A (en) * 2010-06-09 2011-12-14 鞍钢股份有限公司 Method for denitrifying molten steel in converter tapping process
CN115418441B (en) * 2022-08-24 2024-02-06 武汉尚圆融信新型材料有限公司 Efficient denitrification agent and denitrification method for converter tapping process

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US34418A (en) * 1862-02-18 Improvement in vegetable and root cutters
US734418A (en) * 1903-03-30 1903-07-21 John Mcardle Plow.
FI56857C (en) * 1977-06-21 1980-04-10 Outokumpu Oy SAFETY OVER ANORDNING FOR REFINING AVAILABLE WITH POWDER FORMATION FAST MATERIAL OCH / ELLER GAS
USRE34418E (en) * 1982-11-23 1993-10-26 Injectall Limited Apparatus and method for introducing substances into liquid metal
US4999053A (en) * 1985-04-26 1991-03-12 Mitsui Engineering And Ship Building Co., Ltd. Method of producing an iron-, cobalt- and nickel-base alloy having low contents of sulphur, oxygen and nitrogen
US4831742A (en) * 1986-10-15 1989-05-23 Struble James E Contour and outline transducer gage assembly
US4832742A (en) * 1988-05-12 1989-05-23 Metal Research Corporation Flexible refining-agent clad wire for refining molten iron group metal

Also Published As

Publication number Publication date
KR20010013178A (en) 2001-02-26
CN1258321A (en) 2000-06-28
GB2340132A (en) 2000-02-16
DE19882438T1 (en) 2000-06-21
WO1998054369A1 (en) 1998-12-03
AU7723998A (en) 1998-12-30
AU743299B2 (en) 2002-01-24
JP2002501578A (en) 2002-01-15
GB9927865D0 (en) 2000-01-26
ES2168934B1 (en) 2003-11-01
ES2168934A1 (en) 2002-06-16
BR9809184A (en) 2000-08-01
CA2292591A1 (en) 1998-12-03
CN1084793C (en) 2002-05-15

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