ES8604652A1 - Procedimiento de refino de acero fundido conteniendo cromo - Google Patents

Procedimiento de refino de acero fundido conteniendo cromo

Info

Publication number
ES8604652A1
ES8604652A1 ES536190A ES536190A ES8604652A1 ES 8604652 A1 ES8604652 A1 ES 8604652A1 ES 536190 A ES536190 A ES 536190A ES 536190 A ES536190 A ES 536190A ES 8604652 A1 ES8604652 A1 ES 8604652A1
Authority
ES
Spain
Prior art keywords
slag
cast steel
chrome
completed
reduction
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.)
Expired
Application number
ES536190A
Other languages
English (en)
Other versions
ES536190A0 (es
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.)
Nippon Steel Corp
Original Assignee
Nippon 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=16867886&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES8604652(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of ES536190A0 publication Critical patent/ES536190A0/es
Publication of ES8604652A1 publication Critical patent/ES8604652A1/es
Expired 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
    • C21C7/04—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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/005—Manufacture of stainless steel
    • 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
    • C21C7/068—Decarburising
    • C21C7/0685—Decarburising of stainless steel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PROCEDIMIENTO DE REFINO DE ACERO FUNDIDO CONTENIENDO CROMO. COMPRENDE: A) DESCARBURIZAR EL ACERO, Y AL FINAL DE ESTA FASE SE EFECTUA LA AGITACION DEL ACERO FUNDIDO Y LA ESCORIA MEDIANTE INSUFLADO DE GAS ARGON; B) ADICIONAR A LA ESCORIA EXISTENTE, UNA VEZ TERMINADA LA DESCARBURIZACION, ALUMINIO METALICO, COMO AGENTE REDUCTOR, Y OXIDO DE CALCIO, COMO AGENTE FORMADOR DE ESCORIA, EN LAS CANTIDADES SUFICIENTES PARA QUE, UNA VEZ TERMINADA LA REDUCCION, DICHA ESCORIA ADQUIERA UN CONTENIDO EN DIOXIDO SILICICO NO SUPERIOR A 10% Y UNA RELACION DE OXIDO DE CALCIO A OXIDO DE ALUMINIO ENTRE 0,8 Y 2, PERMITIENDO ASI QUE LOS TRATAMIENTOS DE REDUCCION Y DESULFURACION PROCEDAN SIMULTANEAMENTE. SE UTILIZA PARA RECUPERAR EL CROMO, DEL OXIDO DE CROMO DE LA ESCORIA, DE MANERA QUE LA REDUCCION Y LA DESULFURACION DEL ACERO SE REALIZAN AL MISMO TIEMPO.
ES536190A 1983-12-02 1984-09-24 Procedimiento de refino de acero fundido conteniendo cromo Expired ES8604652A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58227887A JPS60121211A (ja) 1983-12-02 1983-12-02 含クロム溶鋼の還元脱硫法

Publications (2)

Publication Number Publication Date
ES536190A0 ES536190A0 (es) 1986-02-01
ES8604652A1 true ES8604652A1 (es) 1986-02-01

Family

ID=16867886

Family Applications (1)

Application Number Title Priority Date Filing Date
ES536190A Expired ES8604652A1 (es) 1983-12-02 1984-09-24 Procedimiento de refino de acero fundido conteniendo cromo

Country Status (5)

Country Link
US (1) US4560406A (es)
EP (1) EP0146696B1 (es)
JP (1) JPS60121211A (es)
CA (1) CA1230974A (es)
ES (1) ES8604652A1 (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZW18288A1 (en) * 1988-01-05 1989-04-19 Middelburg Steel & Alloys Pty Sulphur and silicon control in ferrochromium production
US5472479A (en) * 1994-01-26 1995-12-05 Ltv Steel Company, Inc. Method of making ultra-low carbon and sulfur steel
CN1909558B (zh) 2006-08-23 2010-12-01 华为技术有限公司 一种综合接入系统、方法及窄带业务接口模块
CN105385811A (zh) * 2015-11-27 2016-03-09 山东钢铁股份有限公司 一种含铝钢的生产方法
CN113652525B (zh) * 2021-08-19 2022-10-11 广西北港新材料有限公司 一种根据aod化钢样准确控制铬含量的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2980529A (en) * 1956-12-07 1961-04-18 American Metallurg Products Co Method of making aluminum killed steel
US3702243A (en) * 1969-04-15 1972-11-07 Nat Steel Corp Method of preparing deoxidized steel
BE792732A (fr) * 1972-01-13 1973-03-30 Elektrometallurgie Gmbh Procede pour decarburer rapidement des alliages de fer au moyend'oxygene
DE2333937C2 (de) * 1973-07-04 1975-07-17 Fried. Krupp Huettenwerke Ag, 4630 Bochum Verfahren zur Herstellung hochchromhaltiger Stähle mit niedrigstem Kohlenstoffgehalt
GB1508592A (en) * 1975-02-18 1978-04-26 Nixon I Manufacture of steel alloy steels and ferrous alloys
JPS55110711A (en) * 1979-02-16 1980-08-26 Nippon Steel Corp Desulfurization of molten pig iron
JPS5849994A (ja) * 1981-09-10 1983-03-24 トヨタ自動車株式会社 車両用音声入力装置

Also Published As

Publication number Publication date
EP0146696A1 (en) 1985-07-03
ES536190A0 (es) 1986-02-01
JPS60121211A (ja) 1985-06-28
EP0146696B1 (en) 1987-11-25
US4560406A (en) 1985-12-24
JPH0250965B2 (es) 1990-11-06
CA1230974A (en) 1988-01-05

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