FI92223C - Menetelmä metallioksidipitoisen aineen pelkistämiseksi kiinteässä olomuodossa - Google Patents

Menetelmä metallioksidipitoisen aineen pelkistämiseksi kiinteässä olomuodossa Download PDF

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Publication number
FI92223C
FI92223C FI920310A FI920310A FI92223C FI 92223 C FI92223 C FI 92223C FI 920310 A FI920310 A FI 920310A FI 920310 A FI920310 A FI 920310A FI 92223 C FI92223 C FI 92223C
Authority
FI
Finland
Prior art keywords
chamber
metal oxide
reduction
fluidization chamber
particles
Prior art date
Application number
FI920310A
Other languages
English (en)
Swedish (sv)
Other versions
FI920310A (fi
FI920310A0 (fi
FI92223B (fi
Inventor
Rolf Malmstroem
Original Assignee
Ahlstroem Oy
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 Ahlstroem Oy filed Critical Ahlstroem Oy
Publication of FI920310A0 publication Critical patent/FI920310A0/fi
Priority to FI920310A priority Critical patent/FI92223C/fi
Priority to PCT/FI1993/000020 priority patent/WO1993015232A1/en
Priority to CZ941782A priority patent/CZ282713B6/cs
Priority to EP93902275A priority patent/EP0621903B1/en
Priority to HU9402093A priority patent/HUT70857A/hu
Priority to JP5512951A priority patent/JPH07503283A/ja
Priority to AT93902275T priority patent/ATE131538T1/de
Priority to AU33542/93A priority patent/AU666163B2/en
Priority to US08/256,575 priority patent/US5445667A/en
Priority to BR9305791A priority patent/BR9305791A/pt
Priority to CA002128605A priority patent/CA2128605A1/en
Priority to DE69301025T priority patent/DE69301025T2/de
Publication of FI920310A publication Critical patent/FI920310A/fi
Application granted granted Critical
Publication of FI92223B publication Critical patent/FI92223B/fi
Priority to KR1019940702532A priority patent/KR950700426A/ko
Publication of FI92223C publication Critical patent/FI92223C/fi

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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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0033—In fluidised bed furnaces or apparatus containing a dispersion of the material
    • 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
    • C22B5/12—Dry methods smelting of sulfides or formation of mattes by gases
    • C22B5/14—Dry methods smelting of sulfides or formation of mattes by gases fluidised material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
  • Manufacture Of Iron (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)

Claims (11)

1. Menetelmå metallioksidipitoisen aineen pelkiståmiseksi kiinteåsså faasissa kiertoleijupetireaktorissa, jolloin 5. ylimåårå hiiltå tai koksia metallioksidipitoisen aineen pelkiståmiseksi ja happea sisåltåvåå kaasua syotetåån reaktorin leijutuskammioon siten, ettå aikaansaadaan larnmon kehitys yli 850°C:n lampotilan yllapitamiseksi leijutuskammiossa; 10. esipelkistettyå metallioksidipitoista ainetta sisål tåvåå petimateriaalia ja koksia poistetaan poistokaasujen kanssa leijutuskammion ylåosassa olevan kaasunpoistoaukon kautta ja johdetaan hiukkaserottimeen petimateriaalin erottamiseksi poistokaasuista; ja 15 - poistokaasuista erotettua petimateriaalia palautetaan leijutuskammion alaosaan, tunnettu siitå, ettå - petimateriaali jååhdytetåån leijutuskammion ylåosassa tai hiukkaserottimessa 850°C:seen tai sitå alhaisempaan 20 låmpotilaan ja ettå - poistokaasuista erotettu petimateriaali palautetaan leijutuskammioon karbidisointikammion kautta, jossa yllå-pidetåån rautakarbidin muodostumiseksi otolliset olosuh-teet. 25
2. Patenttivaatimuksen 1 mukainen menetelmå, tunnettu siitå, ettå metallioksidipitoinen aine on rautaoksidi-pitoista ainetta.
3. Patenttivaatimuksen 2 mukainen menetelmå, tunnettu siitå, ettå metallioksidipitoinen aine on rautamalmia. 1 2 Patenttivaatimuksen 1 mukainen menetelmå, tunnettu siitå, ettå låmpotila leijutuskammiossa on yli 900°C. 35 2 Patenttivaatimuksen 1 mukainen menetelmå, tunnettu siitå, ettå låmpotila leijutuskammiossa on 800 - 850°C. 922 23
6. Patenttivaatimuksen 1 inukainen menetelmå, tunnettu siitå, ettå esilåmmitettyå ilmaa, jonka larapotila on yli 1000°C, syotetaan leijutuskaasuna leijutuskammioon.
7. Patenttivaatimuksen 1 mukainen menetelmå, tunnettu siitå, ettå metallioksidipitoista ainetta sisåltavat hiukkaset johdetaan leijuttamattomassa tilassa karbidi-sointikammion låpi.
8. Patenttivaatimuksen 1 mukainen menetelmå, tunnettu siitå, ettå kaasuatmosfååri karbidisointikammiossa påå-asiallisesti muodostuu CO:sta.
9. Patenttivaatimuksen 1 mukainen menetelmå, tunnettu 15 siitå, ettå hiukkaserotin on jååhdytetty sykloni.
10. Patenttivaatimuksen 1 mukainen menetelmå, tunnettu siitå, ettå metallioksidipitoisen aineen viipymåaika reaktorissa on edullisesti alle 15 minuuttia. 20
11. Patenttivaatimuksen 1 mukainen menetelmå, tunnettu siitå, ettå kaasun takaisinvirtaus leijutuskammiosta karbidisointikammion kautta sykloniin ehkåiståån kaasulu-kolla. 25
12. Patenttivaatimuksen 1 mukainen menetelmå, tunnettu siitå, ettå karbidisoimisaste såådetåån sååtåmållå viipymåaika palautussysteemisså. II
FI920310A 1992-01-24 1992-01-24 Menetelmä metallioksidipitoisen aineen pelkistämiseksi kiinteässä olomuodossa FI92223C (fi)

Priority Applications (13)

Application Number Priority Date Filing Date Title
FI920310A FI92223C (fi) 1992-01-24 1992-01-24 Menetelmä metallioksidipitoisen aineen pelkistämiseksi kiinteässä olomuodossa
AT93902275T ATE131538T1 (de) 1992-01-24 1993-01-21 Verfahren zur herstellung eines materials mit metalloxiden in fester phase
US08/256,575 US5445667A (en) 1992-01-24 1993-01-21 Method for reducing material containing metal oxide in solid phase
EP93902275A EP0621903B1 (en) 1992-01-24 1993-01-21 Method for reducing material containing metal oxide in solid phase
HU9402093A HUT70857A (en) 1992-01-24 1993-01-21 Method for reducing material containing metal oxide in solid phase
JP5512951A JPH07503283A (ja) 1992-01-24 1993-01-21 金属酸化物含有材料の固相還元方法
PCT/FI1993/000020 WO1993015232A1 (en) 1992-01-24 1993-01-21 Method for reducing material containing metal oxide in solid phase
AU33542/93A AU666163B2 (en) 1992-01-24 1993-01-21 Method for reducing material containing metal oxide in solid phase
CZ941782A CZ282713B6 (cs) 1992-01-24 1993-01-21 Způsob redukce materiálu obsahujícího oxid kovu v pevné fázi
BR9305791A BR9305791A (pt) 1992-01-24 1993-01-21 Processo para reduzir material que contem oxido de metal na fase sólida
CA002128605A CA2128605A1 (en) 1992-01-24 1993-01-21 Method for reducing material containing metal oxide in solid phase
DE69301025T DE69301025T2 (de) 1992-01-24 1993-01-21 Verfahren zur herstellung eines materials mit metalloxiden in fester phase
KR1019940702532A KR950700426A (ko) 1992-01-24 1994-07-23 고체상태의 산화금속을 함유한 물질을 환원시키는 방법

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI920310 1992-01-24
FI920310A FI92223C (fi) 1992-01-24 1992-01-24 Menetelmä metallioksidipitoisen aineen pelkistämiseksi kiinteässä olomuodossa

Publications (4)

Publication Number Publication Date
FI920310A0 FI920310A0 (fi) 1992-01-24
FI920310A FI920310A (fi) 1993-07-25
FI92223B FI92223B (fi) 1994-06-30
FI92223C true FI92223C (fi) 1994-10-10

Family

ID=8534187

Family Applications (1)

Application Number Title Priority Date Filing Date
FI920310A FI92223C (fi) 1992-01-24 1992-01-24 Menetelmä metallioksidipitoisen aineen pelkistämiseksi kiinteässä olomuodossa

Country Status (13)

Country Link
US (1) US5445667A (fi)
EP (1) EP0621903B1 (fi)
JP (1) JPH07503283A (fi)
KR (1) KR950700426A (fi)
AT (1) ATE131538T1 (fi)
AU (1) AU666163B2 (fi)
BR (1) BR9305791A (fi)
CA (1) CA2128605A1 (fi)
CZ (1) CZ282713B6 (fi)
DE (1) DE69301025T2 (fi)
FI (1) FI92223C (fi)
HU (1) HUT70857A (fi)
WO (1) WO1993015232A1 (fi)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2703070B1 (fr) * 1993-03-26 1995-05-05 Lorraine Laminage Installation de réduction du minerai de fer utilisant un lit fluidise circulant munie d'un dispositif de réglage du débit de matières solides.
US5869018A (en) 1994-01-14 1999-02-09 Iron Carbide Holdings, Ltd. Two step process for the production of iron carbide from iron oxide
US5516358A (en) * 1994-11-17 1996-05-14 Pro-Tech Reclamation, Inc. Method for the production of iron carbide
US5690717A (en) * 1995-03-29 1997-11-25 Iron Carbide Holdings, Ltd. Iron carbide process
US5804156A (en) * 1996-07-19 1998-09-08 Iron Carbide Holdings, Ltd. Iron carbide process
DE19748968C1 (de) 1997-11-06 1999-06-10 Metallgesellschaft Ag Verfahren zum Erzeugen eines Gemisches aus Eisencarbid und körnigem, direkt reduziertem Eisen
AU750751B2 (en) 1998-03-31 2002-07-25 Iron Carbide Holdings, Ltd Process for the production of iron carbide from iron oxide using external sources of carbon monoxide
GB9812169D0 (en) 1998-06-05 1998-08-05 Univ Cambridge Tech Purification method
CU23070A3 (es) 1999-01-12 2005-07-19 Falconbridge Ltd Reduccion de la capa fludizada de finos de laterita con reduccion de gases generados in situ.
US6894243B1 (en) * 1999-08-31 2005-05-17 United States Postal Service Identification coder reader and method for reading an identification code from a mailpiece
DE10101157A1 (de) * 2001-01-12 2002-07-18 Mg Technologies Ag Verfahren zum Erzeugen eines Gemisches aus Eisenerz und Schwelkoks
AU2005248042B2 (en) * 2004-05-31 2011-03-10 Outotec Oyj Direct reduction process using a single fluidised bed
CN100564555C (zh) * 2004-05-31 2009-12-02 奥图泰有限公司 使用单个流化床的直接还原方法
RU2721249C1 (ru) * 2019-11-29 2020-05-18 Валентин Николаевич Терехов Состав шихты для выплавки безуглеродистого железа

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU34613A1 (fi) * 1955-08-31
US2894831A (en) * 1956-11-28 1959-07-14 Old Bruce Scott Process of fluidized bed reduction of iron ore followed by electric furnace melting
SE384225B (sv) * 1974-03-08 1976-04-26 Stora Kopparbergs Bergslags Ab Sett och anordning for reduktion av finfordelat jernoxidhaltigt material
SE419129B (sv) * 1979-05-29 1981-07-13 Stora Kopparbergs Bergslags Ab Anordning for reduktion av finfordelat jernoxidhaltigt material i en cirkulerande flytbedd
DE3629589A1 (de) * 1986-08-30 1988-03-03 Krupp Gmbh Verfahren zur herstellung von eisen aus feinkoernigen eisenerzen

Also Published As

Publication number Publication date
EP0621903B1 (en) 1995-12-13
AU666163B2 (en) 1996-02-01
EP0621903A1 (en) 1994-11-02
FI920310A (fi) 1993-07-25
WO1993015232A1 (en) 1993-08-05
FI920310A0 (fi) 1992-01-24
CZ282713B6 (cs) 1997-09-17
JPH07503283A (ja) 1995-04-06
KR950700426A (ko) 1995-01-16
CA2128605A1 (en) 1993-08-05
HUT70857A (en) 1995-11-28
BR9305791A (pt) 1997-02-18
AU3354293A (en) 1993-09-01
ATE131538T1 (de) 1995-12-15
DE69301025D1 (de) 1996-01-25
CZ178294A3 (en) 1995-08-16
US5445667A (en) 1995-08-29
FI92223B (fi) 1994-06-30
HU9402093D0 (en) 1994-09-28
DE69301025T2 (de) 1996-05-30

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FG Patent granted

Owner name: A. AHLSTROM CORPORATION

BB Publication of examined application
MM Patent lapsed