WO2009019958A1 - 連続溶解炉のスラグフォーミング抑制方法 - Google Patents

連続溶解炉のスラグフォーミング抑制方法 Download PDF

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Publication number
WO2009019958A1
WO2009019958A1 PCT/JP2008/062743 JP2008062743W WO2009019958A1 WO 2009019958 A1 WO2009019958 A1 WO 2009019958A1 JP 2008062743 W JP2008062743 W JP 2008062743W WO 2009019958 A1 WO2009019958 A1 WO 2009019958A1
Authority
WO
WIPO (PCT)
Prior art keywords
melting furnace
continuous melting
slag forming
suppressor
slag
Prior art date
Application number
PCT/JP2008/062743
Other languages
English (en)
French (fr)
Inventor
Masataka Tateishi
Original Assignee
Kabushiki Kaisha Kobe Seiko Sho
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 Kabushiki Kaisha Kobe Seiko Sho filed Critical Kabushiki Kaisha Kobe Seiko Sho
Priority to US12/672,215 priority Critical patent/US8192521B2/en
Publication of WO2009019958A1 publication Critical patent/WO2009019958A1/ja

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
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/19—Arrangements of devices for discharging
    • 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
    • C21C5/567—Manufacture of steel by other methods operating in a continuous way
    • 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
    • F27D3/14—Charging or discharging liquid or molten material
    • 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
    • F27D3/1509—Tapping equipment
    • 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
    • F27D3/159—Equipment for removing or retaining slag for retaining slag during the pouring of the metal or retaining metal during the pouring of the 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
    • C21C2005/5288—Measuring or sampling devices
    • 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
    • C21C2300/04—Avoiding foam formation
    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Manufacture Of Iron (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Gasification And Melting Of Waste (AREA)

Abstract

連続溶解炉内のスラグフォーミングの状態を把握してスラグフォーミングを的確に抑制し、安定した状態で、溶融金属を連続的に製造することができる連続溶解炉のスラグフォーミング抑制方法を提供する。この方法は、炉内のスラグに抑制材を投入することと、スラグの吹錬中に連続溶解炉から排出される排ガスの流量を経時的に測定することと、排ガス流量が増加傾向にあるときに抑制材の投入速度を高め、排ガス流量が減少傾向にあるときに抑制材の投入速度を低くすることとを含む。
PCT/JP2008/062743 2007-08-06 2008-07-15 連続溶解炉のスラグフォーミング抑制方法 WO2009019958A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/672,215 US8192521B2 (en) 2007-08-06 2008-07-15 Method of suppressing slag foaming in continuous melting furnace

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-204444 2007-08-06
JP2007204444A JP5068116B2 (ja) 2007-08-06 2007-08-06 連続溶解炉のスラグフォーミング抑制方法

Publications (1)

Publication Number Publication Date
WO2009019958A1 true WO2009019958A1 (ja) 2009-02-12

Family

ID=40341195

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/062743 WO2009019958A1 (ja) 2007-08-06 2008-07-15 連続溶解炉のスラグフォーミング抑制方法

Country Status (3)

Country Link
US (1) US8192521B2 (ja)
JP (1) JP5068116B2 (ja)
WO (1) WO2009019958A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109239193A (zh) * 2018-10-26 2019-01-18 山东钢铁股份有限公司 一种用于检测转炉炉渣的方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9016094B2 (en) 2013-01-16 2015-04-28 Guardian Industries Corp. Water cooled oxygen lance for use in a float glass furnace and/or float glass furnace using the same
CA2971980C (en) * 2014-12-23 2021-04-06 Technological Resources Pty. Limited Method of sealing and repairing a refractory tap hole

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01195212A (ja) * 1988-01-29 1989-08-07 Nippon Steel Corp 鉄浴式溶融還元炉における粉炭の使用方法
JPH11199916A (ja) * 1998-01-19 1999-07-27 Kawasaki Steel Corp スラグレベル検知機能付き転炉、転炉精錬時のスラグレベル検知方法および金属鉱石の溶融還元方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT318671B (de) * 1968-04-22 1974-11-11 Nippon Steel Corp Verfahren und Vorrichtung zum Betrieb eines Sauerstoffaufblaskonverters
JPS6335723A (ja) * 1986-07-31 1988-02-16 Nippon Steel Corp 溶融還元製錬におけるフオ−ミング抑制方法
JP2679189B2 (ja) * 1988-12-08 1997-11-19 日本鋼管株式会社 溶融還元におけるスロッピング予知方法およびスロッピング防止方法
ZA906892B (en) * 1989-09-04 1991-06-26 Nippon Steel Corp Method of operating in-bath smelting reduction furnace
JP3247781B2 (ja) * 1993-12-09 2002-01-21 川崎製鉄株式会社 電気炉の操業方法
US6171364B1 (en) * 1996-03-22 2001-01-09 Steel Technology Corporation Method for stable operation of a smelter reactor
JPH10176210A (ja) * 1996-12-16 1998-06-30 Kawasaki Steel Corp スラグフォーミング抑制方法
JP3743095B2 (ja) * 1997-02-19 2006-02-08 Ｊｆｅスチール株式会社 電気炉製鋼におけるスラグ・フォーミングの判定方法及び電気炉の操業方法
JP2001181727A (ja) * 1999-12-21 2001-07-03 Kawasaki Steel Corp 電気炉の炉内状況監視方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01195212A (ja) * 1988-01-29 1989-08-07 Nippon Steel Corp 鉄浴式溶融還元炉における粉炭の使用方法
JPH11199916A (ja) * 1998-01-19 1999-07-27 Kawasaki Steel Corp スラグレベル検知機能付き転炉、転炉精錬時のスラグレベル検知方法および金属鉱石の溶融還元方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
OKAZAKI T. ET AL.: "Ro Naiatsu Sokuteki ni yoru Throbbing Yochi Gijutsu no Kaihatsu", JOURNAL OF THE IRON & STEEL INSTITUTE OF JAPAN, vol. 67, no. 4, 5 March 1981 (1981-03-05), pages 225 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109239193A (zh) * 2018-10-26 2019-01-18 山东钢铁股份有限公司 一种用于检测转炉炉渣的方法

Also Published As

Publication number Publication date
US20110203415A1 (en) 2011-08-25
US8192521B2 (en) 2012-06-05
JP2009041043A (ja) 2009-02-26
JP5068116B2 (ja) 2012-11-07

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