BR112014002792A2 - método de dessulfurização do aço fundido, método de refinação secundária do aço fundido, e método de produção de aço fundido - Google Patents

método de dessulfurização do aço fundido, método de refinação secundária do aço fundido, e método de produção de aço fundido

Info

Publication number
BR112014002792A2
BR112014002792A2 BR112014002792A BR112014002792A BR112014002792A2 BR 112014002792 A2 BR112014002792 A2 BR 112014002792A2 BR 112014002792 A BR112014002792 A BR 112014002792A BR 112014002792 A BR112014002792 A BR 112014002792A BR 112014002792 A2 BR112014002792 A2 BR 112014002792A2
Authority
BR
Brazil
Prior art keywords
cast steel
molten steel
sample
desulphurization
refining
Prior art date
Application number
BR112014002792A
Other languages
English (en)
Other versions
BR112014002792B1 (pt
Inventor
Fujimoto Kyoko
Inose Masao
Kawabata Ryo
Kinoshiro Satoshi
Ishige Toshiro
Ito Toshiyuki
Original Assignee
Jfe Steel 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 JP2011176635A external-priority patent/JP5704019B2/ja
Priority claimed from JP2012171212A external-priority patent/JP5896153B2/ja
Application filed by Jfe Steel Corp filed Critical Jfe Steel Corp
Publication of BR112014002792A2 publication Critical patent/BR112014002792A2/pt
Publication of BR112014002792B1 publication Critical patent/BR112014002792B1/pt

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
    • C21C7/064—Dephosphorising; Desulfurising
    • C21C7/0645—Agents used for dephosphorising or desulfurising
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • 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
    • C21C1/02—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
    • 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
    • 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
    • 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
    • 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
    • F27D19/00—Arrangements of controlling devices
    • 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
    • F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/645—Specially adapted constructive features of fluorimeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
    • G01N33/0042—SO2 or SO3
    • 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
    • C21C2007/0093—Duplex process; Two stage processes
    • 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
    • C21C2300/08—Particular sequence of the process steps
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Combustion & Propulsion (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

resumo patente de invenção: "método de dessulfurização do aço fundido, método de refinação secundária do aço fundido, e método de produção de aço fundido". neste ponto são fornecidos um método para a dessulfuração do aço fundido, caracterizado pelo fato de que uma amostra retirada do aço fundido após o esvaziamento por punção a partir de um conversor ou durante a refinação secundária é analisada rapidamente em uma alta precisão por meio de um método compreendendo uma etapa de aquecimento por indução de alta frequência em que a amostra é queimada e oxidada sob o aquecimento por indução de alta frequência em uma atmosfera de oxigênio puro para converter o s na amostra em so2 e uma etapa de análise em que o gás contendo so2 produzido na etapa de aquecimento por indução de alta frequência é analisada através de um método de fluorescência ultravioleta para quantificar a concentração de s da amostra, de acordo com a qual a concentração s de aço fundido após o esvaziamento por punção do conversor pode ser controlada em uma alta precisão para impedir a insuficiência da concentração de s e também o tempo de dessulfurização na refinação secundária pode ser encurtado e a quantidade do dessulfurizador ou outras mais empregadas podem ser reduzidas, e um método de produção de aço fundido por meio do uso de um tal método.
BR112014002792-7A 2011-08-12 2012-08-08 método de fabricação de aço fundido BR112014002792B1 (pt)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP2011-176633 2011-08-12
JP2011176633 2011-08-12
JP2011176635A JP5704019B2 (ja) 2011-08-12 2011-08-12 溶鋼の二次精錬方法および製造方法
JP2011-176635 2011-08-12
JP2012-171212 2012-08-01
JP2012171212A JP5896153B2 (ja) 2011-08-12 2012-08-01 溶鋼の脱硫方法および製造方法
PCT/JP2012/070204 WO2013024766A1 (ja) 2011-08-12 2012-08-08 溶鋼の脱硫方法、溶鋼の二次精錬方法および溶鋼の製造方法

Publications (2)

Publication Number Publication Date
BR112014002792A2 true BR112014002792A2 (pt) 2017-03-01
BR112014002792B1 BR112014002792B1 (pt) 2018-11-06

Family

ID=50015669

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112014002792-7A BR112014002792B1 (pt) 2011-08-12 2012-08-08 método de fabricação de aço fundido

Country Status (6)

Country Link
US (2) US10287644B2 (pt)
EP (1) EP2722405B1 (pt)
KR (1) KR101579011B1 (pt)
CN (1) CN103562415B (pt)
BR (1) BR112014002792B1 (pt)
WO (1) WO2013024766A1 (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5177263B2 (ja) * 2011-08-12 2013-04-03 Ｊｆｅスチール株式会社 溶銑の脱硫方法
JP6176209B2 (ja) * 2014-08-28 2017-08-09 Ｊｆｅスチール株式会社 炭素含有鋼の精錬方法
CN110396635A (zh) * 2019-08-02 2019-11-01 南京钢铁股份有限公司 一种提高屈服345MPa级结构钢疲劳寿命的冶炼方法
EP4265743A4 (en) * 2021-02-10 2024-05-15 Jfe Steel Corp METHOD FOR DESULFURIZATION OF METAL MELTS

Family Cites Families (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3363427A (en) * 1964-06-02 1968-01-16 Air Reduction Production of ultrahigh purity oxygen with removal of hydrocarbon impurities
US4045679A (en) * 1976-05-27 1977-08-30 W. R. Grace & Co. Fluorescent gas analyzer
US4254339A (en) * 1977-06-29 1981-03-03 Yanagimoto Seisakusho Co. Ltd. Method for the fluorimetric quantitative determination of SO2 in gases and apparatus therefor
CA1184402A (en) 1980-04-11 1985-03-26 Sumitomo Metal Industries, Ltd. Ferritic stainless steel having good corrosion resistance
US4582686A (en) 1982-11-04 1986-04-15 Horiba, Ltd. Apparatus for analyzing elements contained in metal compositions
JPS5983054A (ja) * 1982-11-04 1984-05-14 Horiba Ltd 金属中の元素分析装置
JPS61191956A (ja) 1985-02-20 1986-08-26 Mitsubishi Chem Ind Ltd 窒素及び硫黄を含有する物質中の硫黄分の測定方法及び測定装置
JPS6283435A (ja) * 1985-10-07 1987-04-16 Mitsui Eng & Shipbuild Co Ltd 硫黄、酸素及び窒素の各含有量が極めて低い鉄―ニッケル、及びコバルト―基合金の製造方法
US5152963A (en) * 1986-08-04 1992-10-06 Wreyford Donald M Total sulfur analyzer system operative on sulfur/nitrogen mixtures
JPS63132355U (pt) * 1987-02-20 1988-08-30
US4916077A (en) * 1987-02-27 1990-04-10 Shell Oil Company Method and apparatus for oxidative decomposition and analysis of a sample
EP0502843A1 (en) 1988-11-25 1992-09-16 BENNER, Richard L Process and apparatus for the detection of sulfur
JPH0699737B2 (ja) 1989-02-01 1994-12-07 株式会社メタル・リサーチ・コーポレーション 清浄鋼の製造方法
JPH0310014A (ja) * 1989-06-08 1991-01-17 Nippon Steel Corp 二次精錬の終点制御方法
US5149364A (en) 1990-03-14 1992-09-22 Elkem Metals Company Desulfurization agent
JPH0894609A (ja) 1994-09-21 1996-04-12 Nkk Corp 銑鉄の成分分析用試料の調製方法及び装置
JPH116009A (ja) 1997-06-18 1999-01-12 Nisshin Steel Co Ltd ＲＨ真空脱ガス装置を用いた高Ｍｎ溶鋼の脱硫方法
JPH1151924A (ja) * 1997-08-09 1999-02-26 Horiba Ltd 元素分析方法
JP2000065699A (ja) * 1998-08-19 2000-03-03 Mitsubishi Chemicals Corp 分析用試料燃焼装置及び分析用試料燃焼装置における不活性ガス，酸素含有ガス供給制御方法並びに試料燃焼装置を有する分析システム
JP2001323314A (ja) 2000-05-12 2001-11-22 Nippon Steel Corp ステンレス鋼の脱硫方法
JP2003065958A (ja) * 2001-08-30 2003-03-05 Dia Instr:Kk 硫黄の分析方法および分析装置
JP4499969B2 (ja) 2001-11-15 2010-07-14 Ｊｆｅスチール株式会社 溶鋼の取鍋精錬による脱硫方法
US6808550B2 (en) * 2002-02-15 2004-10-26 Nucor Corporation Model-based system for determining process parameters for the ladle refinement of steel
JP4096632B2 (ja) 2002-05-30 2008-06-04 住友金属工業株式会社 溶鋼の減圧下脱硫方法
JP2004138466A (ja) 2002-10-17 2004-05-13 Horiba Ltd 試料処理方法および試料処理ユニット
KR101012837B1 (ko) 2003-07-08 2011-02-08 주식회사 포스코 탈황을 위한 용선 예비처리방법
JP4025702B2 (ja) * 2003-08-13 2007-12-26 株式会社堀場製作所 紫外線蛍光法による硫黄成分の分析方法及び分析装置
US7244395B2 (en) * 2003-09-29 2007-07-17 Petroleum Analyzer Company, Lp Apparatus for trace sulfur detection using UV fluorescence
CA2539844C (en) * 2003-12-17 2012-01-31 Heraeus Electro-Nite International N.V. Method for analysis of a fused material device and dipping sensor
JP2005179762A (ja) 2003-12-22 2005-07-07 Kobe Steel Ltd 極低硫鋼の製造方法
JP4986383B2 (ja) 2004-03-31 2012-07-25 Ｊｆｅスチール株式会社 溶銑の脱硫方法
KR20080027766A (ko) * 2005-05-06 2008-03-28 더 큐레이터스 오브 더 유니버시티 오브 미주리 연속식 강철 생산 및 장치
JP4817713B2 (ja) 2005-05-20 2011-11-16 株式会社堀場製作所 硫黄化合物の分析方法及び分析装置
JP4742740B2 (ja) 2005-08-19 2011-08-10 Ｊｆｅスチール株式会社 低硫鋼の溶製方法
JP5343308B2 (ja) 2006-09-11 2013-11-13 Ｊｆｅスチール株式会社 溶鋼の脱硫方法
JP5200380B2 (ja) 2007-01-09 2013-06-05 Ｊｆｅスチール株式会社 溶鋼の脱硫方法
JP5079382B2 (ja) * 2007-04-24 2012-11-21 新日本製鐵株式会社 溶鋼の精錬方法
JP5151448B2 (ja) * 2007-12-17 2013-02-27 新日鐵住金株式会社 極低硫極低酸素極低窒素鋼の溶製方法
JP2009191289A (ja) 2008-02-12 2009-08-27 Jfe Steel Corp 溶鋼の脱硫方法及び脱硫装置
JP5458499B2 (ja) 2008-02-13 2014-04-02 Ｊｆｅスチール株式会社 溶銑の脱硫処理方法
JP2010276486A (ja) 2009-05-29 2010-12-09 Mitsubishi Chemical Analytech Co Ltd 硫黄の分析方法および分析装置
JP5589688B2 (ja) * 2009-09-10 2014-09-17 Ｊｆｅスチール株式会社 溶銑の製造方法
JP2011102137A (ja) * 2009-11-11 2011-05-26 Nihon Tetra Pak Kk キャップ付紙容器
JP4840516B2 (ja) * 2010-02-18 2011-12-21 Ｊｆｅスチール株式会社 金属試料中の硫黄の分析方法および分析装置
JP5373695B2 (ja) 2010-05-07 2013-12-18 Ｊｘ日鉱日石エネルギー株式会社 硫黄オンライン分析装置
JP5177170B2 (ja) 2010-05-07 2013-04-03 Ｊｆｅスチール株式会社 溶銑の脱硫方法
JP6257362B2 (ja) * 2014-02-06 2018-01-10 株式会社神戸製鋼所 鉄鋼精錬用副資材

Also Published As

Publication number Publication date
KR20140037944A (ko) 2014-03-27
EP2722405A1 (en) 2014-04-23
CN103562415B (zh) 2015-05-06
EP2722405B1 (en) 2018-10-10
WO2013024766A1 (ja) 2013-02-21
EP2722405A4 (en) 2015-09-30
US11035014B2 (en) 2021-06-15
BR112014002792B1 (pt) 2018-11-06
US10287644B2 (en) 2019-05-14
KR101579011B1 (ko) 2015-12-18
US20170247773A1 (en) 2017-08-31
US20140096643A1 (en) 2014-04-10
CN103562415A (zh) 2014-02-05

Similar Documents

Publication Publication Date Title
BR112014002792A2 (pt) método de dessulfurização do aço fundido, método de refinação secundária do aço fundido, e método de produção de aço fundido
BR112012024493A2 (pt) Método para o processamento de um gás ácido rico em dióxido de carbono em um processo claus e aparelho para o processamento de um gás ácido rico em dióxido de carbono em um processo claus
CL2008003629A1 (es) Metodo de analisis microbiologico de muestras biologicas que comprende un primer intervalo de tiempo de incubacion, tras el cual las muestras que dividen en 3 categorias (positivas, negativas o inciertas) dependiendo de la cantidad de dioxido de carbono generado, y donde las muestra que presentan un contenido de dioxido de carbono comprendido entre un valor maximo y minimo (muestras inciertas), se someten a un segundo intervalo de tiempo de incubacion y asi categorizarlas como positivas o negativas.
BR112014016232A2 (pt) medições precisas de analito para tira de teste eletroquímico com base em múltiplas medições discretas definidas pela(s) característica(s) física(s) detectada(s) da amostra contendo o analito
AR057302A1 (es) Composicion enriquecida de acido tereftallco
BR112015031150A2 (pt) método para tratamento de minério de metal; e altoforno para produção de metal
BR112012015629A2 (pt) controle de processo de conversor por meio de sinais dos gases de exaustão
BR112012023269A2 (pt) Dispositivo para a condensação, separação e armazenamento de enxofre líquido, e, processo para a condensação, separação armazenamento de enxofre líquido
BR112015016931A2 (pt) método de pré-tratamento de ferro fundido
BR112014031220A2 (pt) estrutura de eletrodo com capacidade de respiração e método e sistema para uso em separação da água
MA34257B1 (fr) Procédé d'élimination catalytique de dioxyde de carbone et de dioxyde de soufre de gaz d'échappement
WO2009125219A3 (en) Markers of oocyte viability
CN105223146A (zh) 一种采用硅钼蓝比色法测定硅铝铁中硅含量的方法
BRPI0914420A2 (pt) método para tratar uma corrente de gás de saída de um forno de aço
BR112014002861A2 (pt) método para dessulfurização de metal quente
BR112013020045A2 (pt) método de dessiliconização e desfosforilação de ferro gusa fundido
BRPI0418064A (pt) procedimento para a obtenção de manganês eletrolìtico a partir de resìduos da fabricação de ferro-ligas
EA201100836A1 (ru) Способ регулируемого окисления раствора, содержащего двухвалетное железо
MY173249A (en) Device and method for biologically desulfurizing biogas
MY182278A (en) Device and method for biological desulfurization from biogas
BR0114404A (pt) Processo para produzir tira de aço e tira de aço fundida produzida pelo mesmo
ITMI20040175A1 (it) Procedimento per la rimozione di idrogeno solforato tramite la sua ossidazione in presenza di eteropoliacidi
WO2002059596A3 (en) Method and apparatus for measurement of the sulfate concentration in air samples
BRPI0717315A2 (pt) Processo de regulação de saída de monóxido de carbono em um processo de fusão metalúrgica
朱诚意 et al. The evolution of inclusions in high quality GCr15 bearing steels during secondary refining process

Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 08/08/2012, OBSERVADAS AS CONDICOES LEGAIS.