BR0208590A - Processo para refinar metal em uma panela de fundição - Google Patents

Processo para refinar metal em uma panela de fundição

Info

Publication number
BR0208590A
BR0208590A BR0208590-9A BR0208590A BR0208590A BR 0208590 A BR0208590 A BR 0208590A BR 0208590 A BR0208590 A BR 0208590A BR 0208590 A BR0208590 A BR 0208590A
Authority
BR
Brazil
Prior art keywords
steel
slag
manganese
silicon
desulphurization
Prior art date
Application number
BR0208590-9A
Other languages
English (en)
Inventor
Clay A Gross
Rama Ballav Mahapatra
Walter Blejde
Steven Leonard Wigman
Original Assignee
Nucor 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
Application filed by Nucor Corp filed Critical Nucor Corp
Publication of BR0208590A publication Critical patent/BR0208590A/pt

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/116—Refining the metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/116—Refining the metal
    • B22D11/117—Refining the metal by treating 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
    • C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
    • 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
    • C21C7/0645—Agents used for dephosphorising or 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
    • 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
    • C21C5/34—Blowing through the bath
    • 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
    • C21C7/0087—Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Coating With Molten Metal (AREA)
  • Lubricants (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Continuous Casting (AREA)

Abstract

"PROCESSO PARA REFINAR METAL EM UMA PANELA DE FUNDIçãO". Uma carga de aço e de material de formação de escória é aquecida em uma panela de fundição para formar aço fundido coberto por uma escória que contém óxidos de silício, manganês e cálcio. O aço é submetido a agitação mediante injeção de um gás inerte, tal como argónio ou nitrogênio, para promover a desoxidação de silício-manganês e dessulfuração para produzir um aço fundido acalmado por silício-manganês. A agitação do aço fundido mediante a injeção de gás inerte, enquanto em contacto com escória de elevado teor de óxido de cálcio, gera baixos níveis de oxigênio livre no aço e dessulfuração para níveis de enxofre inferiores a 0,009%. A escória pode ser subseq³entemente espessada pela adição de cal a fim de impedir a reversão do enxofre de volta ao aço e oxigênio pode ser injetado no aço com a finalidade de aumentar o seu teor de oxigênio livre para produzir um aço que é fácil de ser fundido em um fundidor de cilindros gêmeos.
BR0208590-9A 2001-04-02 2002-04-02 Processo para refinar metal em uma panela de fundição BR0208590A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US28091601P 2001-04-02 2001-04-02
PCT/AU2002/000425 WO2002079522A1 (en) 2001-04-02 2002-04-02 Ladle refining of steel

Publications (1)

Publication Number Publication Date
BR0208590A true BR0208590A (pt) 2004-04-20

Family

ID=23075155

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0208590-9A BR0208590A (pt) 2001-04-02 2002-04-02 Processo para refinar metal em uma panela de fundição

Country Status (19)

Country Link
US (1) US6547849B2 (pt)
EP (2) EP1880783B1 (pt)
JP (1) JP4398643B2 (pt)
KR (1) KR100894114B1 (pt)
CN (1) CN1258607C (pt)
AT (1) ATE414797T1 (pt)
AU (1) AU2002244528B2 (pt)
BR (1) BR0208590A (pt)
CA (1) CA2441839C (pt)
DE (1) DE60229931D1 (pt)
DK (1) DK1386011T3 (pt)
EE (1) EE05426B1 (pt)
IS (1) IS6961A (pt)
MX (1) MXPA03008956A (pt)
NO (1) NO339256B1 (pt)
RU (1) RU2285052C2 (pt)
TW (1) TW550297B (pt)
UA (1) UA76140C2 (pt)
WO (1) WO2002079522A1 (pt)

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US7048033B2 (en) * 2001-09-14 2006-05-23 Nucor Corporation Casting steel strip
US7485196B2 (en) * 2001-09-14 2009-02-03 Nucor Corporation Steel product with a high austenite grain coarsening temperature
AU2002331433A2 (en) * 2001-09-14 2003-04-01 Nucor Corporation Casting steel strip
US7690417B2 (en) * 2001-09-14 2010-04-06 Nucor Corporation Thin cast strip with controlled manganese and low oxygen levels and method for making same
FR2833970B1 (fr) * 2001-12-24 2004-10-15 Usinor Demi-produit siderurgique en acier au carbone et ses procedes de realisation, et produit siderurgique obtenu a partir de ce demi-produit, notamment destine a la galvanisation
US6808550B2 (en) * 2002-02-15 2004-10-26 Nucor Corporation Model-based system for determining process parameters for the ladle refinement of steel
JP4357810B2 (ja) * 2002-07-25 2009-11-04 三菱マテリアル株式会社 鋳造装置及び鋳造方法
US20040144518A1 (en) * 2003-01-24 2004-07-29 Blejde Walter N. Casting steel strip with low surface roughness and low porosity
EP1594640B1 (en) * 2003-01-24 2014-04-23 Nucor Corporation Casting steel strip
US9149868B2 (en) * 2005-10-20 2015-10-06 Nucor Corporation Thin cast strip product with microalloy additions, and method for making the same
US10071416B2 (en) * 2005-10-20 2018-09-11 Nucor Corporation High strength thin cast strip product and method for making the same
US9999918B2 (en) 2005-10-20 2018-06-19 Nucor Corporation Thin cast strip product with microalloy additions, and method for making the same
AT504225B1 (de) * 2006-09-22 2008-10-15 Siemens Vai Metals Tech Gmbh Verfahren zur herstellung eines stahlbandes
CN101007340B (zh) * 2007-01-25 2010-05-19 鞍钢股份有限公司 连铸中间包减少浇余钢水的处理方法
US20110277886A1 (en) 2010-02-20 2011-11-17 Nucor Corporation Nitriding of niobium steel and product made thereby
CN101818304B (zh) * 2010-03-23 2012-08-29 武汉钢铁(集团)公司 一种超大线能量焊接高强钢及其生产方法
CN101912875B (zh) * 2010-07-22 2012-02-29 河北省首钢迁安钢铁有限责任公司 一种解决低锰硫比低碳铝镇静钢边部缺陷的方法
US8858867B2 (en) 2011-02-01 2014-10-14 Superior Machine Co. of South Carolina, Inc. Ladle metallurgy furnace having improved roof
CZ305115B6 (cs) * 2013-10-21 2015-05-06 Žďas, A.S. Rafinační pánev
CN110218843A (zh) * 2019-05-14 2019-09-10 鞍钢股份有限公司 一种钢液渣洗净化装置及净化方法
CN111471834B (zh) * 2020-06-09 2022-03-22 攀钢集团攀枝花钢钒有限公司 板坯连铸普碳钢lf脱硫方法
CN113881828A (zh) * 2021-10-25 2022-01-04 江苏长强钢铁有限公司 炼钢快速脱硫的方法
CN114593663B (zh) * 2022-02-23 2023-10-03 本钢板材股份有限公司 一种基于副边电流模型的精炼lf炉渣厚测量方法
CN114737010B (zh) * 2022-03-25 2023-10-20 武汉钢铁有限公司 一种防止高硅铝脱氧钢大包粘渣的造渣方法

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Also Published As

Publication number Publication date
JP4398643B2 (ja) 2010-01-13
MXPA03008956A (es) 2004-02-18
KR100894114B1 (ko) 2009-04-20
EP1880783B1 (en) 2013-10-30
UA76140C2 (en) 2006-07-17
CA2441839A1 (en) 2002-10-10
JP2004518823A (ja) 2004-06-24
EP1386011A4 (en) 2004-07-21
CN1501984A (zh) 2004-06-02
EE05426B1 (et) 2011-06-15
NO20034355L (no) 2003-09-29
RU2285052C2 (ru) 2006-10-10
RU2003132069A (ru) 2005-02-10
AU2002244528B2 (en) 2006-11-30
CA2441839C (en) 2010-03-09
EE200300482A (et) 2003-12-15
NO339256B1 (no) 2016-11-21
US6547849B2 (en) 2003-04-15
EP1880783A1 (en) 2008-01-23
DK1386011T3 (da) 2009-03-23
NO20034355D0 (no) 2003-09-29
ATE414797T1 (de) 2008-12-15
TW550297B (en) 2003-09-01
EP1386011B1 (en) 2008-11-19
WO2002079522A1 (en) 2002-10-10
CN1258607C (zh) 2006-06-07
DE60229931D1 (de) 2009-01-02
EP1386011A1 (en) 2004-02-04
US20020174746A1 (en) 2002-11-28
KR20030081535A (ko) 2003-10-17
IS6961A (is) 2003-09-18

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFIRO O PEDIDO DE ACORDO COM O(S) ARTIGO(S)8O, 13 E 25 DA LPI 9.279/96.

B12B Appeal against refusal [chapter 12.2 patent gazette]