MY152973A - Low cost making of a low carbon, low sulfur, and low nitrogen steel using conventional steelmaking equipment - Google Patents

Low cost making of a low carbon, low sulfur, and low nitrogen steel using conventional steelmaking equipment

Info

Publication number
MY152973A
MY152973A MYPI20110472A MY152973A MY 152973 A MY152973 A MY 152973A MY PI20110472 A MYPI20110472 A MY PI20110472A MY 152973 A MY152973 A MY 152973A
Authority
MY
Malaysia
Prior art keywords
low
molten steel
steel composition
ladle
vtd
Prior art date
Application number
Inventor
Geldenhuis Jocabus Marthinus Andreas
David J Sosinsky
Murray Daniel Gene
Mcgaughey David Wayne
Eugene B Pretorius
Original Assignee
Bluescope Steel Ltd
Ihi 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
Priority claimed from AU2008904315A external-priority patent/AU2008904315A0/en
Priority claimed from US12/414,047 external-priority patent/US8313553B2/en
Application filed by Bluescope Steel Ltd, Ihi Corp filed Critical Bluescope Steel Ltd
Publication of MY152973A publication Critical patent/MY152973A/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
    • 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
    • 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
    • C21C7/06—Deoxidising, e.g. killing
    • 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
    • C21C7/10—Handling in a vacuum
    • 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

Abstract

A METHOD OF MAKING A STEEL WITH LOW CARBON LESS THAN 0.035% BY WEIGHT INCLUDING STEPS OF PREPARING A HEAT OF MOLTEN STEEL COMPOSITION IN A STEELMAKING FURNACE TO A TAPPING TEMPERATURE AS DESIRED FOR DESULFURIZATION AT A VTD, TAPPING OPEN INTO A LADLE THE MOLTEN STEEL COMPOSITION WITH AN OXYGEN LEVEL BETWEEN ABOUT 600 AND 1120 PPM, PROVIDING A SLAG FORMING COMPOUND TO THE LADLE TO FORM A SLAG COVER OVER THE MOLTEN STEEL COMPOSITION IN THE LADLE, TRANSPORTING THE MOLTEN STEEL COMPOSITION IN THE LADLE TO A VTD, DECARBURIZING THE MOLTEN STEEL COMPOSITION AT THE VTD BY DRAWING A VACUUM OF LESS THAN 650 MILLIBARS, AFTER DECARBURIZING, ADDING ONE OR MORE DEOXIDIZERS TO THE MOLTEN STEEL COMPOSITION AND DEOXIDIZING THE MOLTEN STEEL COMPOSITION, AFTER DEOXIDIZING, ADDING ONE OR MORE FLUX COMPOUNDS TO DESULFURIZE THE MOLTEN STEEL COMPOSITION, AND CASTING THE MOLTEN STEEL COMPOSITION TO FORM A STEEL WITH LOW CARBON LESS THAN 0.035% BY WEIGHT.
MYPI20110472 2008-08-04 2009-08-03 Low cost making of a low carbon, low sulfur, and low nitrogen steel using conventional steelmaking equipment MY152973A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US8614108P 2008-08-04 2008-08-04
AU2008904315A AU2008904315A0 (en) 2008-08-22 Low cost making of a low carbon, low sulfur, and low nitrogen steel using conventional steelmaking equipment
US12/414,047 US8313553B2 (en) 2008-08-04 2009-03-30 Low cost making of a low carbon, low sulfur, and low nitrogen steel using conventional steelmaking equipment

Publications (1)

Publication Number Publication Date
MY152973A true MY152973A (en) 2014-12-15

Family

ID=52595685

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI20110472 MY152973A (en) 2008-08-04 2009-08-03 Low cost making of a low carbon, low sulfur, and low nitrogen steel using conventional steelmaking equipment

Country Status (4)

Country Link
CN (1) CN105714016B (en)
MY (1) MY152973A (en)
PL (1) PL2331715T3 (en)
TR (1) TR201820148T4 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108396094A (en) * 2017-02-05 2018-08-14 鞍钢股份有限公司 A kind of smelting process of low nitrogen mild steel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100513587C (en) * 2006-06-26 2009-07-15 舞阳钢铁有限责任公司 Electric furnace smelting method for high-grade pipe line steel

Also Published As

Publication number Publication date
PL2331715T3 (en) 2017-06-30
CN105714016A (en) 2016-06-29
TR201820148T4 (en) 2019-01-21
CN105714016B (en) 2019-01-22

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