ATE353980T1 - Verfahren für die reduktionsbehandlung flüssiger schlacke und filterstaubes eines elektrischen lichtbogenofens - Google Patents

Verfahren für die reduktionsbehandlung flüssiger schlacke und filterstaubes eines elektrischen lichtbogenofens

Info

Publication number
ATE353980T1
ATE353980T1 AT01103864T AT01103864T ATE353980T1 AT E353980 T1 ATE353980 T1 AT E353980T1 AT 01103864 T AT01103864 T AT 01103864T AT 01103864 T AT01103864 T AT 01103864T AT E353980 T1 ATE353980 T1 AT E353980T1
Authority
AT
Austria
Prior art keywords
slag
shell portion
liquid slag
dust
tapped
Prior art date
Application number
AT01103864T
Other languages
English (en)
Inventor
John A Vallomy
Original Assignee
John A Vallomy
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 John A Vallomy filed Critical John A Vallomy
Application granted granted Critical
Publication of ATE353980T1 publication Critical patent/ATE353980T1/de

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/06—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces with movable working chambers or hearths, e.g. tiltable, oscillating or describing a composed movement
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid 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
    • C21C5/52—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
    • C21C5/54—Processes yielding slags of special composition
    • 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
    • C21C5/56—Manufacture of steel by other methods
    • C21C5/562—Manufacture of steel by other methods starting from scrap
    • 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
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
    • 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
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/34—Obtaining zinc oxide
    • 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
    • C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
    • 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
    • C22B7/02—Working-up flue dust
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces heated electrically, with or without any other source of heat
    • F27B3/085—Arc furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/02—Physical or chemical treatment of slags
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/06—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces with movable working chambers or hearths, e.g. tiltable, oscillating or describing a composed movement
    • F27B3/065—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces with movable working chambers or hearths, e.g. tiltable, oscillating or describing a composed movement tiltable
    • 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
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
    • 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
    • F27D3/12—Travelling or movable supports or containers for the charge
    • F27D2003/125—Charging cars, lift trolleys
    • F27D2003/127—Charging cars, lift trolleys for carrying pots
    • 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
    • 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
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D2099/0085—Accessories
    • F27D2099/0095—Means to collect the slag or spilled metal, e.g. vessels
    • 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
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1545—Equipment for removing or retaining slag
    • F27D3/1554—Equipment for removing or retaining slag for removing the slag from the surface of the melt
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
    • F27M2001/00—Composition, conformation or state of the charge
    • F27M2001/05—Waste materials, refuse
    • 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
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
AT01103864T 2000-02-17 2001-02-16 Verfahren für die reduktionsbehandlung flüssiger schlacke und filterstaubes eines elektrischen lichtbogenofens ATE353980T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18323500P 2000-02-17 2000-02-17

Publications (1)

Publication Number Publication Date
ATE353980T1 true ATE353980T1 (de) 2007-03-15

Family

ID=22672004

Family Applications (1)

Application Number Title Priority Date Filing Date
AT01103864T ATE353980T1 (de) 2000-02-17 2001-02-16 Verfahren für die reduktionsbehandlung flüssiger schlacke und filterstaubes eines elektrischen lichtbogenofens

Country Status (6)

Country Link
US (1) US6438154B2 (de)
EP (1) EP1126039B1 (de)
JP (1) JP2001323327A (de)
AT (1) ATE353980T1 (de)
DE (1) DE60126526T2 (de)
ES (1) ES2281384T3 (de)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
UA73541C2 (en) * 2000-01-28 2005-08-15 Holcim Ltd A method for removal of alkalis from dust or mixture of different types of dust
DE10350959A1 (de) * 2003-10-30 2005-05-25 Sms Demag Ag Verfahren zur Rückgewinnung von metallischen Elementen aus metalloxidhaltigen Schlacken
RU2372407C2 (ru) * 2004-01-30 2009-11-10 Текнолоджикал Ресорсиз Пти. Лимитед Получение железа и стали
AU2005209334B2 (en) * 2004-01-30 2011-02-10 Tata Steel Limited Ironmaking and steelmaking
KR101092070B1 (ko) 2004-09-02 2011-12-12 주식회사 포스코 용탕슬래그의 교반장치
US7513929B2 (en) * 2005-04-01 2009-04-07 Heritage Environmental Services, Llc Operation of iron oxide recovery furnace for energy savings, volatile metal removal and slag control
US7413590B2 (en) 2006-01-11 2008-08-19 Heritage Environmental Services, Llc Use of an induction furnace for the production of iron from ore
CN101239384B (zh) * 2007-02-06 2010-05-19 宝山钢铁股份有限公司 铸余渣和钢水的分离方法
US8702367B2 (en) * 2007-03-21 2014-04-22 Edw. C. Levy Co. Method, and process for preparing a recyclable material
JP5312845B2 (ja) * 2008-05-27 2013-10-09 住友重機械工業株式会社 亜鉛回収装置
EP2324134B1 (de) * 2008-08-12 2016-03-23 ThyssenKrupp Industrial Solutions AG Verfahren zur herstellung von hüttensand
JP2012516938A (ja) * 2009-02-03 2012-07-26 シーメンス アクチエンゲゼルシヤフト 電気アーク炉の一酸化炭素排出量を制御するための方法および装置
KR101175422B1 (ko) * 2009-12-30 2012-08-20 현대제철 주식회사 슬래그의 유가금속 회수방법
KR101175423B1 (ko) * 2009-12-30 2012-08-20 현대제철 주식회사 슬래그의 유가금속 회수방법
WO2011081267A1 (ko) * 2009-12-30 2011-07-07 현대제철 주식회사 슬래그의 유가금속 회수 및 다기능성 골재의 제조 방법 및 그 장치
JP5573403B2 (ja) * 2010-06-22 2014-08-20 Ｊｆｅスチール株式会社 製鋼スラグの資源化方法及び燐酸肥料用原料
IT1401859B1 (it) * 2010-09-06 2013-08-28 Feralpi Siderurgica S P A Metodo e impianto per il trattamento di scorie metallurgiche
DE102010064099A1 (de) 2010-10-01 2012-04-05 Sms Siemag Ag Verfahren und Vorrichtung zum Aufbereiten von Reststoffen aus Industrie-Anlagen
CN101985697B (zh) * 2010-11-10 2012-07-18 攀钢集团钢铁钒钛股份有限公司 高钛型高炉渣碳化的电炉装炉工艺
WO2012074186A1 (ko) * 2010-11-29 2012-06-07 현대제철 주식회사 전기로의 슬래그 배출 도어 장치
SE1250215A1 (sv) * 2012-03-08 2013-08-06 Valeas Recycling Ab Järnreduktionsprocess och anordning därför
EP2767597B1 (de) 2012-06-27 2016-11-02 Nippon Steel & Sumitomo Metal Corporation Verfahren zur Reduktionsverarbeitung von Schlacke aus der Stahlverarbeitung
CN104630495A (zh) * 2015-02-05 2015-05-20 无为县环江铜业有限公司 一种便于转运和倒渣的熔炉炉渣收集转运装置
RU2677550C2 (ru) * 2017-05-29 2019-01-17 федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный университет" (ФГБОУ ВО "ВГУ") Способ использования строительных отходов в качестве компонента шлакообразующих смесей
CN107462070B (zh) * 2017-08-07 2018-12-28 程立章 一种用于铜制品生产的熔炉
CN108411117B (zh) * 2018-03-15 2019-07-02 安徽工业大学 铅锌渣余热回收方法
CN109371256B (zh) * 2018-11-29 2023-09-22 大余明发矿业有限公司 一种铅回收设备及其铅回收工艺
EP3901289A1 (de) * 2020-04-24 2021-10-27 Orbix Solutions Verfahren zur herstellung einer überwiegend kristallinen erstarrten stahlschlacke
CN111945010B (zh) * 2020-08-24 2024-03-22 河南省德耀节能科技股份有限公司 一种高效矿热固废循环再加工利用系统及方法
CN112944920B (zh) * 2021-03-11 2022-09-06 商洛学院 一种用于镁合金熔炼的提渣装置
BE1030319B1 (de) * 2022-03-04 2023-10-03 Thyssenkrupp Ag Einsatz von Gießereialtsand zur Herstellung einer raumstabilen Stahlwerksschlacke
DE102023105075A1 (de) 2022-03-04 2023-09-07 Thyssenkrupp Ag Einsatz von Gießereialtsand zur Herstellung einer raumstabilen Stahlwerksschlacke
CN115821056A (zh) * 2022-09-14 2023-03-21 湖南锐异资环科技有限公司 一种钢厂含锌烟灰与含锌漆渣的协同处理方法
CN115491446A (zh) * 2022-09-21 2022-12-20 中冶南方工程技术有限公司 一种高效利用高炉渣余热的低碳冶炼方法及系统
CN116555571A (zh) * 2023-04-27 2023-08-08 上海开鸿环保科技有限公司 危废污泥电热熔融资源化处理装置

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE665267A (de) * 1965-06-11 1965-10-01
DE1900629C3 (de) * 1968-01-08 1980-10-09 Huta Zabrze, Przedsiebiorstwo Panstwowe, Zabrze (Polen) Elektrolichtbogen-Ofenanlage zur Erzeugung von Metallegierungen, insbesondere von Stahl
DE2307237C3 (de) * 1972-02-15 1979-01-25 Graenges Ab, Stockholm Verfahren zur Behandlung von Stahlschlacken
DE3068874D1 (en) * 1979-08-14 1984-09-13 Centre Rech Metallurgique Processes for working-up non-phosphorous metallurgical slags
DE3165093D1 (en) * 1980-10-09 1984-08-30 Bbc Brown Boveri & Cie Tiltable electric-arc furnace
DE3038876C2 (de) * 1980-10-15 1985-02-21 Benteler-Werke AG, 4790 Paderborn Pfannendrehturm
DE3102499A1 (de) * 1981-01-27 1982-08-05 Mannesmann AG, 4000 Düsseldorf "stahlschmelzanlage"
DE3308486C2 (de) * 1983-03-10 1985-04-04 Mannesmann AG, 4000 Düsseldorf Auf kippbarem Rahmen verfahrbarer Lichtbogenofen
JPS61270239A (ja) * 1985-05-22 1986-11-29 日本磁力選鉱株式会社 潜弧式電気炉スラグの処理方法
EP0225939B1 (de) * 1985-12-20 1991-07-17 MANNESMANN Aktiengesellschaft Verfahren zum Einschmelzen von Schrott o.dgl. und Vorrichtung zur Durchführung des Verfahrens
NO160931C (no) * 1987-04-02 1989-06-14 Elkem As Stoevbehandling.
DE3817845A1 (de) * 1988-05-26 1989-12-07 Weg Walzwerk Euskirchen Gmbh Verfahren zur umweltfreundlichen einbindung von staub, der wasserloesliche, umweltgefaehrdende verbindungen enthaelt, aus entstaubungsanlagen von stahlwerken
US5019160A (en) * 1989-03-11 1991-05-28 Nippon Jiryoku Senko Co., Ltd. Method of modifying steel slag
JPH0826418B2 (ja) * 1990-08-10 1996-03-13 日立造船株式会社 電気炉における酸化亜鉛回収方法および酸化亜鉛回収設備
DE4302285C3 (de) * 1993-01-25 1998-07-09 Mannesmann Ag Verfahren und Einrichtung zum Betreiben einer Zweiofenanlage
GB2285061B (en) * 1993-12-21 1997-01-08 Vacmetal Gmbh A method of processing ferrous materials
IT1289008B1 (it) * 1996-10-21 1998-09-25 Danieli Off Mecc Dispositivo di supporto e basculamento del tino in un forno elettrico
IT1304327B1 (it) * 1997-03-26 2001-03-15 Danieli Off Mecc Procedimento di caricamento rottami per forno elettricoad arco e relativo sistema
IT1295559B1 (it) * 1997-05-23 1999-05-13 Danieli Off Mecc Sistema di caricamento per forni elettrici ad arco
BR9806267A (pt) * 1997-09-15 2000-04-04 Holderbank Financ Glarus Processo para o tratamento de escórias de aço e substratos de ferro para obtenção de ferro bruto e de escórias compatìveis com o meio ambiente

Also Published As

Publication number Publication date
DE60126526D1 (de) 2007-03-29
EP1126039B1 (de) 2007-02-14
DE60126526T2 (de) 2007-11-22
ES2281384T3 (es) 2007-10-01
JP2001323327A (ja) 2001-11-22
US20010046251A1 (en) 2001-11-29
EP1126039A1 (de) 2001-08-22
US6438154B2 (en) 2002-08-20

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