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FI20061123L - Method for pretreatment of material fed to the melting furnace and preheating system - Google Patents

Method for pretreatment of material fed to the melting furnace and preheating system Download PDF

Info

Publication number
FI20061123L
FI20061123L FI20061123A FI20061123A FI20061123L FI 20061123 L FI20061123 L FI 20061123L FI 20061123 A FI20061123 A FI 20061123A FI 20061123 A FI20061123 A FI 20061123A FI 20061123 L FI20061123 L FI 20061123L
Authority
FI
Finland
Prior art keywords
preheating
preheating system
fed
pretreatment
melting furnace
Prior art date
Application number
FI20061123A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20061123A7 (en
FI20061123A0 (en
Inventor
Harri Louhelainen
Tom Roennberg
Janne Ollila
Original Assignee
Outotec Oyj
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 Outotec Oyj filed Critical Outotec Oyj
Priority to FI20061123A priority Critical patent/FI20061123L/en
Publication of FI20061123A0 publication Critical patent/FI20061123A0/en
Priority to ZA200710578A priority patent/ZA200710578B/en
Priority to PCT/FI2007/000292 priority patent/WO2008087244A1/en
Publication of FI20061123A7 publication Critical patent/FI20061123A7/en
Publication of FI20061123L publication Critical patent/FI20061123L/en

Links

Classifications

    • 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
    • F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
    • 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; Electric arc furnaces ; Tank furnaces
    • F27B3/10—Details, accessories or equipment, e.g. dust-collectors, specially adapted for 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
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/527—Charging of the 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
    • C21C5/56—Manufacture of steel by other methods
    • C21C5/562—Manufacture of steel by other methods starting from scrap
    • C21C5/565—Preheating of scrap
    • 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
    • F27D17/30—Arrangements for extraction or collection of waste gases; Hoods therefor
    • F27D17/304—Arrangements for extraction or collection of waste gases; Hoods therefor specially adapted for electric arc furnaces
    • 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
    • C21C2100/00—Exhaust gas
    • C21C2100/06—Energy from waste gas used in other processes
    • 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)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Furnace Details (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

The invention relates to a method of pre-treating material that is fed into a smelting furnace (2), such as an electric furnace, whereby the feed material (5) is treated in a preheating system (1) comprising several separate preheating silos (3), each of them being connected, at the lower part thereof, to the smelting furnace by means of at least one feed pipe (6), the preheating system containing a means for distributing the heating gas in the preheating silo (3), whereby the gas mixture (4) that is fed into each preheating silo (3) of the preheating system is heated in a common gas heating unit (8), whereby the temperature of the material in each preheating silo (3) is adjusted by changing the amount of gas mixture (4) that is fed through the gas heating unit (8). The invention also relates to the preheating system.
FI20061123A 2006-12-15 2006-12-15 Method for pretreatment of material fed to the melting furnace and preheating system FI20061123L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI20061123A FI20061123L (en) 2006-12-15 2006-12-15 Method for pretreatment of material fed to the melting furnace and preheating system
ZA200710578A ZA200710578B (en) 2006-12-15 2007-12-05 Method of pretreating material that is fed into a smelting furnace, and a preheating system
PCT/FI2007/000292 WO2008087244A1 (en) 2006-12-15 2007-12-13 Method of pretreating material that is fed into a smelting furnace, and a preheating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20061123A FI20061123L (en) 2006-12-15 2006-12-15 Method for pretreatment of material fed to the melting furnace and preheating system

Publications (3)

Publication Number Publication Date
FI20061123A0 FI20061123A0 (en) 2006-12-15
FI20061123A7 FI20061123A7 (en) 2008-06-16
FI20061123L true FI20061123L (en) 2008-06-16

Family

ID=37623749

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20061123A FI20061123L (en) 2006-12-15 2006-12-15 Method for pretreatment of material fed to the melting furnace and preheating system

Country Status (3)

Country Link
FI (1) FI20061123L (en)
WO (1) WO2008087244A1 (en)
ZA (1) ZA200710578B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3099991B1 (en) 2014-01-31 2017-12-13 Danieli & C. Officine Meccaniche, S.p.A. Plant and method for melting metal materials
CN103884193A (en) * 2014-04-08 2014-06-25 南京凯盛国际工程有限公司 Combined adjustable material spreading device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375958A (en) * 1980-06-06 1983-03-08 Nippon Kokan Kabushiki Kaisha Method for preheating steel scrap by exhaust gas from steelmaking electric furnace
US4478574A (en) * 1981-08-31 1984-10-23 Kawasaki Jukogyo Kabushiki Kaisha Scrap preheating system for an electric furnace
FI71008C (en) * 1984-06-27 1986-10-27 Outokumpu Oy SAETTING OVER ANORDING FOERBEREDNING AV EN CHARGEBLANDNING AVSEDD ATT INMATAS I EN SMAELTUGN
FI105236B (en) * 1998-06-15 2000-06-30 Outokumpu Oy Feeding apparatus for preparing a feed mixture to be fed to a melting furnace
ATE377741T1 (en) * 2001-07-24 2007-11-15 Elti Srl METHOD FOR PREPARING IRON SCRAP TO BE FEEDED IN THE ELECTRIC FURNACE AND DEVICE FOR IMPLEMENTING THE METHOD

Also Published As

Publication number Publication date
FI20061123A7 (en) 2008-06-16
FI20061123A0 (en) 2006-12-15
ZA200710578B (en) 2008-11-26
WO2008087244A1 (en) 2008-07-24

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Legal Events

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Owner name: OUTOTEC OYJ

Free format text: OUTOTEC OYJ

FD Application lapsed