• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to metallurgy, to methods for producing liquid iron or products prior to steel, and containing iron-dispersed material, mainly sponge iron, as well as for producing a reducing gas in a fluidized bed gasifier and a molten slag and metal bath. The goal is to reduce the sulfur content of the metal. The method is carried out as follows. The iron ore material is supplied to the lower part of the fluidized bed above the level of injection of oxygen-containing gas, and the recovered piecherunos from the gasifier is returned through the tuyeres to the fluidized bed, to which sulfur acceptors are also added, and the temperature of the coke layer above the melt is maintained within 1400- 1500 C. The use of the invention allows to obtain a low-grained metal using coal with a sulfur content of up to 2%. 3 hp f-ly, 1 ill.
    公开号:SU1436888A3
    申请号:SU843781300
    申请日:1984-08-15
    公开日:1988-11-07
    发明作者:Кепплингер Вернер
    申请人:Фоест-Альпине Аг (Фирма)；Корф Инжинеринг Гмбх (Фирма)；
    IPC主号:
    专利说明:

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    The invention relates to metallurgy, in particular to methods for producing liquid iron or products prior to steel, from an iron-containing material containing predominantly sponge iron, as well as producing a reducing gas in a fluidized bed gasifier and a molten slag and metal bath.
    The aim of the invention is to reduce the sulfur content in the metal.
    The drawing shows a device for implementing a method for producing molten iron or products of redistribution into steel.
    The device comprises a reactor 1 for melting and gasification, a middle zone and an upper zone with an increased diameter. The lower zone is designed to collect molten metal, slag and for the fixed layer of coke particles above them, the middle zone is designed to form a fluidized bed of coke particles and oxygen-containing carrier gas, and the upper zone serves as a quiet zone for the resulting reducing gas.
    At the top: 2 reactors 1 a hole 3 is provided for supplying coal particles. Next, in the top 2, holes 4 and 5 are provided for draining the resulting reducing gas. Reactor 1 works in conjunction with two mines 6 and 7 for pre-reduction and is connected to them by lines B and 9. Cyclones 10 and 11, respectively, are included in these connecting lines 8 and 9, respectively, to separate the pier, and the dust-free gas through lines 12 and 13 Ventures to the lower part of the planks for pre-recovery.
    From the bottom of shafts 6 and 7, for pre-reduction of route 1 and lines 14 and 15 to the middle zone of the reactor, penetrate the wall of the reactor at this location and enter as loading pipes 16 and 17 for the material previously recovered and containing iron in the internal cavity of reactor 1. An edge 18 of the tuyere sleeves 18, penetrating the wall of the reactor 1, is provided to cut below the loading pipes to blow the oxygen-containing carrier gas. Further in the middle zone still
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    Additional loading pipes 19 may be provided for lime-containing filler materials. The pre-reduction charge in the upper part has feed openings 20 and 21 for the supply of iron ore to the gas vents 22 and 23. From this part of cyclones 10 and 11, lines 24 and 25 lead back to the reactor. They enter the branch pipes penetrating the reactor wall into the middle zone of the reactor 1.
    The device works as follows.
    In the reactor 1, coal or coke particles are continuously introduced through the opening 3, which fall down. Due to the introduction of oxygen-containing gas along the edge 18 of the tuyeres, depending on the gas pressure used and the size of the loaded particles, section B forms a fluidized bed 26 or fluidized bed zone of coke particles, and in the lower zone a fixed bed 27 of coke particles is formed. . The mines for pre-reduction are continuously supplied through the upper holes 20 and 2 iron ore in lumps and material, in particular sponge iron, previously recovered under the influence of reducing gas in the mines 6 and 7, through lines 14 and 15 and through loading pipes 16 and 17 is introduced directly into the fluidized bed zone 26.
    The reduction gas resulting from the recovery after the passage of the calm upper zone through the openings 4 and 5 is dedusted in cyclones 10 and 11. The purified gas is introduced into the mines 6 and 7 of the preliminary reduction. Selected dust from cyclones is sent back along highways 24 and 25 to zone 25 of the fluidized bed.
    The liquid iron formed during the reduction is collected at the bottom of the reactor and forms a bath 28 (melt) J coated with slag layer 29. The metal and slag are discharged through outlet 30 and 31.
    I
    The use of the invention significantly reduces the sulfur content in the metal and the energy consumption of the process.
     i ..: if) a88
    权利要求:
    Claims (4)
    [1]
    1. The method of obtaining iron pig iron or processed products into steel from an iron-containing dispersed mother. in a melter gasifier, which includes feeding coal and injecting oxygen-containing gas through a tuyere in the wall of the melting gasifier to create a fluidized bed of coke particles, supplying the iron ore material to it, characterized in that, in order to reduce the sulfur content in the metal, iron-containing material is fed through a lance in the wall of the melting gasifier above the injection plane Oxygen-containing gas c) izhniuk1 part of a fluidized bed
    [2]
    2. A method according to claim 1, distinguishing UI and rt so that reducing gases are removed from the melter gasifier, dust is removed in one or several cyclones, and precipitated dust particles are fed through tuyeres in the wall of the melter gas generator to the fluidized bed.
    [3]
    3. The method according to claim 1.6 lichi L4 and with the fact that it is blown into the fluidized bed in a fine ande limestone and / or dolomite, magnesite, calcium oxide, magnesium and their mixtures,
    [4]
    4. A method according to claim 1, characterized in that the temperature
    fixed bed of coke, below the fluidized bed, support within 1ДОО-1500 C.
    01
    eight
    but
    类似技术:
    公开号 | 公开日 | 专利标题
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    US5413622A|1995-05-09|Method of making hot metals with totally recycled gas
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    同族专利:
    公开号 | 公开日
    DE3463947D1|1987-07-02|
    CS611684A2|1985-09-17|
    EP0143102B1|1987-05-27|
    ATA295383A|1986-06-15|
    JPS6059008A|1985-04-05|
    AU560040B2|1987-03-26|
    CA1228234A|1987-10-20|
    BR8404124A|1985-07-16|
    DD223468A5|1985-06-12|
    ZA846404B|1985-04-24|
    US4725308A|1988-02-16|
    EP0143102A1|1985-05-29|
    AU3110784A|1985-02-21|
    JPH0357162B2|1991-08-30|
    CS244826B2|1986-08-14|
    AT382165B|1987-01-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1086256B|1952-07-23|1960-08-04|Werner Wenzel Dr Ing|Process and device for iron extraction from dust-like or fine-grained iron ores by means of fuels in a fine degree of distribution above the melting point of the non-gaseous reaction products|
    US2781255A|1955-11-16|1957-02-12|Union Carbide & Carbon Corp|Treatment of fumes containing suspended solids|
    FR1243733A|1959-01-01|1960-10-14|British Iron Steel Research|Process for the reduction of metalliferous ores, in particular iron ores for the production of iron|
    DE1267692B|1960-08-10|1968-05-09|E H Hermann Schenck Dr Ing Dr|Process for the reduction of metal oxides with coal in a fluidized bed|
    SE388210B|1973-01-26|1976-09-27|Skf Svenska Kullagerfab Ab|MAKE A REDUCTION OF METAL FROM METAL OXIDES|
    US3948645A|1973-04-30|1976-04-06|Boliden Aktiebolag|Method of carrying out heat-requiring chemical and/or physical processes in a fluidized bed|
    US4173465A|1978-08-15|1979-11-06|Midrex Corporation|Method for the direct reduction of iron using gas from coal|
    DE2843303C2|1978-10-04|1982-12-16|Korf-Stahl Ag, 7570 Baden-Baden|Process and plant for the production of liquid pig iron and reducing gas in a melter gasifier|
    DE3273996D1|1981-04-28|1986-12-04|Kawasaki Steel Co|Methods for melting and refining a powdery ore containing metal oxides and apparatuses for melt-refining said ore|
    SE457265B|1981-06-10|1988-12-12|Sumitomo Metal Ind|PROCEDURE AND ESTABLISHMENT FOR PREPARATION OF THANKS|AT381116B|1984-11-15|1986-08-25|Voest Alpine Ag|METHOD FOR THE PRODUCTION OF LIQUID PIPE IRON OR STEEL PRE-PRODUCTS AND DEVICE FOR IMPLEMENTING THE METHOD|
    DE3603894C2|1986-02-05|1993-03-18|Deutsche Voest-Alpine Industrieanlagenbau Gmbh, 4000 Duesseldorf, De|
    DE3785851D1|1987-02-16|1993-06-17|Moskovskij Institut Stali I Splavov, Moskau/Moskva, Ru|
    DE3787017T2|1987-06-30|1993-11-25|Kawasaki Steel Co|Method and device for producing liquid metal from ore particles.|
    DE4108283A1|1991-03-14|1992-09-17|Kortec Ag|METHOD FOR PRODUCING LIQUID METAL FROM FINE-GRAIN METAL OXIDE PARTICLES, AND REDUCTION AND MELTING STOVES FOR CARRYING OUT THE METHOD|
    US5397376A|1992-10-06|1995-03-14|Bechtel Group, Inc.|Method of providing fuel for an iron making process|
    US5320676A|1992-10-06|1994-06-14|Bechtel Group, Inc.|Low slag iron making process with injecting coolant|
    US5259864A|1992-10-06|1993-11-09|Bechtel Group, Inc.|Method of disposing of environmentally undesirable material and providing fuel for an iron making process e.g. petroleum coke|
    US6197088B1|1992-10-06|2001-03-06|Bechtel Group, Inc.|Producing liquid iron having a low sulfur content|
    US5354356A|1992-10-06|1994-10-11|Bechtel Group Inc.|Method of providing fuel for an iron making process|
    US5429658A|1992-10-06|1995-07-04|Bechtel Group, Inc.|Method of making iron from oily steel and iron ferrous waste|
    US5380352A|1992-10-06|1995-01-10|Bechtel Group, Inc.|Method of using rubber tires in an iron making process|
    GB2281311B|1993-03-29|1996-09-04|Boc Group Plc|Metallurgical processes and apparatus|
    US5338336A|1993-06-30|1994-08-16|Bechtel Group, Inc.|Method of processing electric arc furnace dust and providing fuel for an iron making process|
    US5558696A|1993-12-15|1996-09-24|Bechtel Group, Inc.|Method of direct steel making from liquid iron|
    US5958107A|1993-12-15|1999-09-28|Bechtel Croup, Inc.|Shift conversion for the preparation of reducing gas|
    DE19634348A1|1996-08-23|1998-02-26|Arcmet Tech Gmbh|Melting unit with an electric arc furnace|
    AT404022B|1996-11-08|1998-07-27|Voest Alpine Ind Anlagen|METHOD AND INSTALLATION FOR THE PRODUCTION OF LIQUID PIPE IRON OR STEEL PRE-PRODUCTS FROM IRON-CONTAINING MATERIAL|
    US7238222B2|2005-03-01|2007-07-03|Peterson Oren V|Thermal synthesis production of steel|
    AT511738B1|2011-07-21|2013-04-15|Siemens Vai Metals Tech Gmbh|MELT REDUCTION AGGREGATE AND METHOD FOR OPERATING A MELT REDUCTION AGGREGATE|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT0295383A|AT382165B|1983-08-18|1983-08-18|METHOD FOR THE PRODUCTION OF LIQUID PIPE IRON OR STEEL PRE-PRODUCTS AND DEVICE FOR IMPLEMENTING THE METHOD|
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