BR0011949A - Processo para a recuperação de cromo metálico a partir de escórias contendo óxido de cromo - Google Patents

Processo para a recuperação de cromo metálico a partir de escórias contendo óxido de cromo

Info

Publication number
BR0011949A
BR0011949A BR0011949A BR0011949A BR0011949A BR 0011949 A BR0011949 A BR 0011949A BR 0011949 A BR0011949 A BR 0011949A BR 0011949 A BR0011949 A BR 0011949A BR 0011949 A BR0011949 A BR 0011949A
Authority
BR
Brazil
Prior art keywords
slag
recovery
chromium
metallic
oxide
Prior art date
Application number
BR0011949A
Other languages
English (en)
Inventor
Karl Goetzinger
Jan Reichel
Original Assignee
Sms Demag Ag
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 Sms Demag Ag filed Critical Sms Demag Ag
Publication of BR0011949A publication Critical patent/BR0011949A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/04—Working-up slag
    • 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
    • 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
    • C21C5/5252—Manufacture of steel in electric furnaces in an electrically heated multi-chamber furnace, a combination of electric furnaces or an electric furnace arranged for associated working with a non electric furnace
    • 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
    • C21C5/5264—Manufacture of alloyed steels including ferro-alloys
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/04—Dry methods smelting of sulfides or formation of mattes by aluminium, other metals or silicon
    • 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
    • C21C2005/5258—Manufacture of steel in electric furnaces with crater formed by down-melting of scrap or charge through electrode or lance
    • 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
    • F27D3/16—Introducing a fluid jet or current into the charge
    • F27D2003/168—Introducing a fluid jet or current into the charge through a lance
    • 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

Patente de Invenção: "PROCESSO PARA A RECUPERAçãO DE CROMO METáLICO A PARTIR DE ESCóRIAS CONTENDO óXIDO DE CROMO". Processo para a recuperação de cromo metálico a partir de escórias contendo óxido de cromo de processos de conversão como AOD, MRP, AOD-I, MRP-L, CLU, ASM, Conarc-Stainless ou processos de vácuo tais como VOD, SS-VOD, RH, RH com lança, pelo que a escória obtida no final de um processo de formação de bolhas ou de tratamento em um conversor ou em uma instalação de vácuo é vazada ou removida não reduzida, esta escória é carregada em um forno elétrico, que ademais é carregado com uma carga usual de cascalho e eventualmente poeiras restantes; adicionalmente são acrescentados carbono e eventualmente silício e na fusão o óxido de cromo contendo a escória acrescentada é reduzido pelo carbono e o silício diretamente em cromo metálico.
BR0011949A 1999-06-23 2000-06-23 Processo para a recuperação de cromo metálico a partir de escórias contendo óxido de cromo BR0011949A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19929551 1999-06-23
PCT/DE2000/002030 WO2000079014A1 (de) 1999-06-23 2000-06-23 Verfahren zur rückgewinnung von metallischem chrom aus chromoxid enthaltenden schlacken

Publications (1)

Publication Number Publication Date
BR0011949A true BR0011949A (pt) 2002-03-26

Family

ID=7912806

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0011949A BR0011949A (pt) 1999-06-23 2000-06-23 Processo para a recuperação de cromo metálico a partir de escórias contendo óxido de cromo

Country Status (13)

Country Link
US (1) US6679931B1 (pt)
EP (1) EP1194597A1 (pt)
JP (2) JP2003502504A (pt)
KR (1) KR20020014821A (pt)
CN (1) CN1217017C (pt)
AU (1) AU6554700A (pt)
BR (1) BR0011949A (pt)
CZ (1) CZ303288B6 (pt)
MX (1) MXPA01012898A (pt)
PL (1) PL352472A1 (pt)
RU (1) RU2247161C2 (pt)
WO (1) WO2000079014A1 (pt)
ZA (1) ZA200200517B (pt)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2206396T3 (es) * 2000-01-28 2004-05-16 Holcim Ltd. Procedimiento para la eliminacion de cromo y/o niquel de escorias liquidas.
EP1332232B1 (de) * 2000-10-18 2004-04-07 SMS Demag Aktiengesellschaft Verfahren zur erzeugung nichtrostender stähle, insbesondere chrom- und chromnickelhaltiger edelstähle
JP3721154B2 (ja) * 2002-10-18 2005-11-30 新日本製鐵株式会社 クロム含有溶湯の精錬方法
DE10323507A1 (de) * 2003-05-24 2004-12-09 Sms Demag Ag Verfahren zur Rückgewinnung von metallischen Elementen, insbesondere metallischem Chrom, aus metalloxidhaltigen Schlacken im Elektrolichtbogenofen
DE10335847A1 (de) * 2003-07-31 2005-02-17 Sms Demag Ag Elektroreduktionsofen
DE10350959A1 (de) * 2003-10-30 2005-05-25 Sms Demag Ag Verfahren zur Rückgewinnung von metallischen Elementen aus metalloxidhaltigen Schlacken
PT1747297E (pt) * 2004-05-18 2008-02-13 Holcim Ltd Método para a redução de cr em escórias metalúrgicas contendo cr
KR100793591B1 (ko) * 2006-12-28 2008-01-14 주식회사 포스코 산화크롬 함유 슬래그로부터의 크롬 금속 환원 방법
JP5326475B2 (ja) * 2008-10-07 2013-10-30 新日鐵住金株式会社 クロム含有スラグからのクロム回収方法
CN103031405B (zh) * 2011-11-29 2015-03-18 新疆八一钢铁股份有限公司 电炉热兑转炉液态钢渣的炼钢工艺
CN102864311B (zh) * 2012-09-21 2014-11-26 承德建龙特殊钢有限公司 一种高铬渣中铬在炼钢-lf工序的回收方法
CN103031401B (zh) * 2012-09-26 2014-04-30 新疆八一钢铁股份有限公司 一种lf精炼炉还原渣用于转炉炼钢的方法
CN103924089A (zh) * 2014-04-25 2014-07-16 北京科技大学 一种熔融处理不锈钢粉尘、炉渣及含Cr污泥的方法
JP6451462B2 (ja) * 2015-04-01 2019-01-16 新日鐵住金株式会社 クロム含有スラグからのクロム回収方法
CN104789736B (zh) * 2015-05-18 2017-01-11 安徽富凯特材有限公司 一种降低电弧炉渣中铬元素的方法
CN105568004B (zh) * 2016-03-03 2017-06-16 锦州集信高温材料有限公司 一种在电弧炉中铝铬渣冶炼金属铬的方法
KR101835708B1 (ko) 2016-07-26 2018-03-07 주식회사 심팩 메탈 용융환원 전기로(saf)를 이용한 스테인리스 제강 전로 슬래그 중 유가금속 회수방법
CN107267850B (zh) * 2017-06-07 2019-02-01 北京科技大学 一种回收熔炼炉渣中铬元素的不锈钢冶炼方法
JP7243861B2 (ja) 2020-09-10 2023-03-22 Ｊｆｅスチール株式会社 含クロム溶鉄の製造方法
CN115141907A (zh) * 2022-03-08 2022-10-04 重庆钢铁股份有限公司 转炉低铁钢比冶炼防止氧枪喷头烧漏的方法

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US3012875A (en) * 1959-12-04 1961-12-12 Strategic Udy Metallurgical & Chemical Processes Ltd Metallurgical process
DE2307237C3 (de) * 1972-02-15 1979-01-25 Graenges Ab, Stockholm Verfahren zur Behandlung von Stahlschlacken
JPS5713606B2 (pt) * 1973-04-05 1982-03-18
JPS5324001B2 (pt) * 1973-10-02 1978-07-18
JPS5653605B2 (pt) * 1974-09-04 1981-12-19
JPS54122615A (en) * 1978-03-16 1979-09-22 Showa Denko Kk Reducing method for chromium oxide-containing slag
JPS54158313A (en) * 1978-06-03 1979-12-14 Nippon Steel Corp Chromium removing method for chromium-containing slag
JPS5931816A (ja) * 1982-08-12 1984-02-21 Nippon Steel Corp 粗溶鋼の製造方法
JP2632676B2 (ja) * 1986-12-02 1997-07-23 日新製鋼株式会社 ステンレス鋼精錬におけるクロムの回収法
JPH0310030A (ja) * 1989-06-08 1991-01-17 Nisshin Steel Co Ltd ステンレス鋼製造過程副産物の処理炉
JPH03107430A (ja) * 1989-09-22 1991-05-07 Nisshin Steel Co Ltd ステンレス鋼製造過程副産物の処理炉および処理方法
JPH05247522A (ja) * 1992-03-05 1993-09-24 Kawasaki Steel Corp 高清浄度ステンレス鋼の溶製方法
RU2082785C1 (ru) * 1993-04-06 1997-06-27 Акционерное общество открытого типа "Челябинский электрометаллургический комбинат" Способ извлечения металла из шлака производства передельного ферросиликохрома
AT403293B (de) * 1995-01-16 1997-12-29 Kct Tech Gmbh Verfahren und anlage zum herstellen von legierten stählen
ZA963234B (en) * 1995-05-02 1996-07-29 Holderbank Financ Glarus Process for the production of hydraulic binders and/or alloys such as e g ferrochromium of ferrovanadium
JP3769860B2 (ja) * 1997-02-04 2006-04-26 Ｊｆｅスチール株式会社 ステンレス鋼の精錬方法

Also Published As

Publication number Publication date
WO2000079014A1 (de) 2000-12-28
RU2247161C2 (ru) 2005-02-27
JP2013079449A (ja) 2013-05-02
KR20020014821A (ko) 2002-02-25
CZ20014667A3 (cs) 2002-05-15
MXPA01012898A (es) 2002-07-30
CN1217017C (zh) 2005-08-31
ZA200200517B (en) 2003-06-25
AU6554700A (en) 2001-01-09
EP1194597A1 (de) 2002-04-10
JP2003502504A (ja) 2003-01-21
PL352472A1 (en) 2003-08-25
CZ303288B6 (cs) 2012-07-18
US6679931B1 (en) 2004-01-20
CN1357055A (zh) 2002-07-03

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Legal Events

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

Free format text: INDEFERIDO COM BASE NO ART.8O COMBINADO COM O ART.13 DA LPI 9.279/96.