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EP1266971A3 - Operation method of moving hearth furnace - Google Patents

Operation method of moving hearth furnace Download PDF

Info

Publication number
EP1266971A3
EP1266971A3 EP02012441A EP02012441A EP1266971A3 EP 1266971 A3 EP1266971 A3 EP 1266971A3 EP 02012441 A EP02012441 A EP 02012441A EP 02012441 A EP02012441 A EP 02012441A EP 1266971 A3 EP1266971 A3 EP 1266971A3
Authority
EP
European Patent Office
Prior art keywords
hearth furnace
moving hearth
operation method
reduced
fuel
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.)
Withdrawn
Application number
EP02012441A
Other languages
German (de)
French (fr)
Other versions
EP1266971A2 (en
Inventor
Kojiro Kobe Steel Ltd. Osaka Branch Fuji
Makoto Kobe Corporate Research Labs. Nishimura
Hidetoshi Kobe Steel Ltd. Osaka Branch Tanaka
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Publication of EP1266971A2 publication Critical patent/EP1266971A2/en
Publication of EP1266971A3 publication Critical patent/EP1266971A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0066—Preliminary conditioning of the solid carbonaceous reductant
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/10—Making spongy iron or liquid steel, by direct processes in hearth-type furnaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Tunnel Furnaces (AREA)
  • Processing Of Solid Wastes (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Manufacture Of Iron (AREA)
  • Furnace Details (AREA)

Abstract

An operation method of a moving hearth furnace, in which a reduced metal is obtained by reducing by heating a metal oxide loaded into the moving hearth furnace, includes the steps of supplying and burning a fuel including combustible wastes as a heat source for the operation. According to the operation method of a moving hearth furnace, the resources can be used effectively and costs can be reduced by using industrial wastes as a fuel.
EP02012441A 2001-06-11 2002-06-10 Operation method of moving hearth furnace Withdrawn EP1266971A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001176249 2001-06-11
JP2001176249A JP2002363626A (en) 2001-06-11 2001-06-11 Method for operating movable hearth furnace

Publications (2)

Publication Number Publication Date
EP1266971A2 EP1266971A2 (en) 2002-12-18
EP1266971A3 true EP1266971A3 (en) 2003-01-15

Family

ID=19017266

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02012441A Withdrawn EP1266971A3 (en) 2001-06-11 2002-06-10 Operation method of moving hearth furnace

Country Status (5)

Country Link
US (1) US20020194961A1 (en)
EP (1) EP1266971A3 (en)
JP (1) JP2002363626A (en)
AU (1) AU4588002A (en)
CA (1) CA2390151A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4167113B2 (en) * 2003-04-17 2008-10-15 株式会社神戸製鋼所 Method and apparatus for producing reduced iron
GB0500985D0 (en) * 2005-01-18 2005-02-23 Zotefoams Plc Polyamide foams, process to make them and applications thereof
JP2012246514A (en) * 2011-05-25 2012-12-13 Kobe Steel Ltd Method for producing reduced iron
JP5494990B2 (en) * 2012-02-29 2014-05-21 三菱マテリアル株式会社 Automatic dissolution apparatus for dry assay samples

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1231273B (en) * 1959-05-14 1966-12-29 Demag Elektrometallurgie Gmbh Process for the refinement of iron ores mixed with reducing substances, in particular carbon, and device for carrying out this process
US3998606A (en) * 1973-04-23 1976-12-21 Nippon Kokan Kabushiki Kaisha Method and apparatus for manufacturing reducing gas
DE2923726B1 (en) * 1979-06-12 1980-12-04 Fritz Dr Rer Nat Mindermann Use of sludge or activated sludge as a reducing agent
DE2935103A1 (en) * 1979-08-30 1981-03-12 Estermann, Thomas M., Gempen, Basel Fuel prodn. from liq. industrial wastes - by mixing with finely divided organic adsorbent
DE2935544A1 (en) * 1979-09-03 1981-03-19 Fritz Dr.Rer.Nat. 7889 Grenzach Mindermann Iron mfr. from iron oxide(s) - where carbonaceous reducing agents include sewage sludge and waste obtd. from paper, wood, plastics rubber or garbage
JPS58180594A (en) * 1982-04-19 1983-10-22 Toshishige Furuhashi Solid fuel exhausting clean gas on combustion
DE3320951A1 (en) * 1983-06-10 1984-12-13 Fritz Dr.Rer.Nat. 7889 Grenzach Mindermann Use of water-moist sewage sludge in iron production
DE4232285A1 (en) * 1992-09-28 1994-03-31 Lottermoser Manfred Working-up material contg. iron oxide and/or non-ferrous heavy metal cpds. - using pulsed reducing flame fed directly into furnace
JPH0873909A (en) * 1994-09-12 1996-03-19 Nkk Corp How to inject fuel into the vertical furnace
DE19541673A1 (en) * 1994-11-14 1996-08-29 Krupp Ag Hoesch Krupp Prodn. of solid reductants/energy carriers for blast furnaces
DE19520651A1 (en) * 1995-06-09 1996-12-12 Dieter Dr Ing Fuenders Utilisation of clarifier and waterworks sludge
JPH1060509A (en) * 1996-06-11 1998-03-03 Nkk Corp Processing methods and equipment for synthetic resins
US5824134A (en) * 1997-01-29 1998-10-20 Powers; Jim Direct reduction of iron ore utilizing organic hazardous materials
JP2002161318A (en) * 2000-09-14 2002-06-04 Nippon Steel Corp Method of controlling sedimentary layer growth in rotary hearth furnace and agglomeration of metal oxide used for the method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5730775A (en) * 1994-12-16 1998-03-24 Midrex International B.V. Rotterdam, Zurich Branch Method for rapid reduction of iron oxide in a rotary hearth furnace

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1231273B (en) * 1959-05-14 1966-12-29 Demag Elektrometallurgie Gmbh Process for the refinement of iron ores mixed with reducing substances, in particular carbon, and device for carrying out this process
US3998606A (en) * 1973-04-23 1976-12-21 Nippon Kokan Kabushiki Kaisha Method and apparatus for manufacturing reducing gas
DE2923726B1 (en) * 1979-06-12 1980-12-04 Fritz Dr Rer Nat Mindermann Use of sludge or activated sludge as a reducing agent
DE2935103A1 (en) * 1979-08-30 1981-03-12 Estermann, Thomas M., Gempen, Basel Fuel prodn. from liq. industrial wastes - by mixing with finely divided organic adsorbent
DE2935544A1 (en) * 1979-09-03 1981-03-19 Fritz Dr.Rer.Nat. 7889 Grenzach Mindermann Iron mfr. from iron oxide(s) - where carbonaceous reducing agents include sewage sludge and waste obtd. from paper, wood, plastics rubber or garbage
JPS58180594A (en) * 1982-04-19 1983-10-22 Toshishige Furuhashi Solid fuel exhausting clean gas on combustion
DE3320951A1 (en) * 1983-06-10 1984-12-13 Fritz Dr.Rer.Nat. 7889 Grenzach Mindermann Use of water-moist sewage sludge in iron production
DE4232285A1 (en) * 1992-09-28 1994-03-31 Lottermoser Manfred Working-up material contg. iron oxide and/or non-ferrous heavy metal cpds. - using pulsed reducing flame fed directly into furnace
JPH0873909A (en) * 1994-09-12 1996-03-19 Nkk Corp How to inject fuel into the vertical furnace
DE19541673A1 (en) * 1994-11-14 1996-08-29 Krupp Ag Hoesch Krupp Prodn. of solid reductants/energy carriers for blast furnaces
DE19520651A1 (en) * 1995-06-09 1996-12-12 Dieter Dr Ing Fuenders Utilisation of clarifier and waterworks sludge
JPH1060509A (en) * 1996-06-11 1998-03-03 Nkk Corp Processing methods and equipment for synthetic resins
US5824134A (en) * 1997-01-29 1998-10-20 Powers; Jim Direct reduction of iron ore utilizing organic hazardous materials
JP2002161318A (en) * 2000-09-14 2002-06-04 Nippon Steel Corp Method of controlling sedimentary layer growth in rotary hearth furnace and agglomeration of metal oxide used for the method

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 198348, Derwent World Patents Index; Class A95, AN 1983-830039, XP002221661 *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 07 31 July 1996 (1996-07-31) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 08 30 June 1998 (1998-06-30) *
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 10 10 October 2002 (2002-10-10) *

Also Published As

Publication number Publication date
JP2002363626A (en) 2002-12-18
CA2390151A1 (en) 2002-12-11
AU4588002A (en) 2002-12-12
US20020194961A1 (en) 2002-12-26
EP1266971A2 (en) 2002-12-18

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