• 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 a method for producing pig iron from iron ore. The aim of the invention is to increase the PE. Performance of the melter gasifier. The iron ore is supplied with a carbon carrier, which is coke, mainly high-temperature coke from brown coal, the coarse-grained fraction of which is added to the shaft furnace of direct reduction, and its fine-grained fraction enters the melter gasifier. The ratio of the amount of carbon added to the iron ore carrier to the total amount of used carbon carrier should be 1 b, from 5 to 60%, mainly from 10 to 30%. Part of the exhaust gas of the direct reduction shaft furnace is added to the obtained in a melting gas generator gas to cool it, in particular this gas is fed into the shaft furnace of direct reduction in the Bustle plane and in the bottom zone, and the exhaust gas of the shaft furnace of direct reduction is mixed into the supplied in the bustle and in the bottom zone of the melter gasifier in various quantitative ratios to establish different temperatures. In addition, unbaked and / or calcined additives are added to the iron ore in the direct reduction shaft furnace to preheat and / or dry them. 2 hp f-ly, 1 ill. W-SJ Yu
    公开号:SU1429941A3
    申请号:SU853991699
    申请日:1985-12-23
    公开日:1988-10-07
    发明作者:Хаук Рольф
    申请人:Корф Инжинеринг Гмбх (Фирма)；Фоест-Альпинс Аг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to a method
    production of iron from iron ore, in which iron ore is first reduced in a shaft furnace directly reduced by means of hot ore. the reducing gas into the sponge iron and then the resulting sponge iron is melted in a smelting gasifier while supplying carbon and oxygen-containing gas and forming at least a portion of the reducing gas.
    The aim of the invention is to increase the productivity of the melter gasifier.
    The drawing shows the arrangement of BOj implementing a method for producing pig iron.
    The device contains a shaft furnace 1 for direct reduction and the smelting gasifier 2 located under it. In the shaft furnace, mainly lump iron ore is loaded into the furnace through lime 3. In the Bustle plane, shaft gas 1 is blown through pipeline 4 into the reducing gas, which rises upward against the downward flow of iron ore, resulting in its reduction. After the pro- duction of the shaft furnace 1, this gas is removed as a blast furnace gas. Through the pipeline 5.
    The method is carried out as follows.
    The reduced iron ore flows through the vertical pipes 6 into the melting gasifier 2. Simultaneously with the vertical pipes 6 in the melting gasifier 2, the resulting reducing gas through the corresponding holes in the bottom part of the shaft furnace 1 enters this furnace, and the gas can serve to cool or carburize the spongy gland. In a melting gasifier 2, in a known manner, along with sponge iron, carbon carrier in the form of high-temperature coke from brown coal, as well as through a pipeline (not shown) containing oxygen, is introduced through sponge iron. The reducing gas formed in the melting gasifier 2. the reducing gas, consisting mainly of CO and Ell, has a temperature of about 1000 ° C. In the pipeline 8, the reducing gas is cooled by mixing cooling water.


    about

    Q, 5
    0
    gas to a temperature of about. The cooling gas from the source 9 is directed through the pipe 10 to the pipe 8. In addition, the source 9 of the cooling gas is connected by means of the pipe 11 to the vertical pipes 6 and therefore also the reducing gas rising from the melter gasifier 2 through the vertical pipes 6 can also be cooled to the desired temperature. The source 9 is fed after appropriate cleaning and cooling of the top gas removed from the shaft furnace 1 through pipe 5. The cooled reducing gas flows through pipe 8 into cyclone 12, in which it is cleaned of dust particles 13. The piercing particles are returned through pipe 14 back to the melter gasifier 2. Purified reducing, which has a temperature of 850C, falls through pipe 4 into the shaft furnace 1..
    High-temperature coke from brown coal is first transported through pipe 14 to sieve 15. With the help of screen 15, high-temperature coke is divided into fractions so that the fine-grained fraction goes through pipe 7 to melter gasifier 2, and the coarse fraction goes up through pipe 16 up shaft furnace 1. In this case, the separation of high-temperature coke into fractions is carried out in such a way that the grain size of the coarse fraction is approximately from 10 to 50 mm, the fraction of the coarse fraction in the total amount of coke Tavlya is about 5-60%, preferably from 10 to 30%.
    In the shaft furnace 1 through the pipe 16, the coke is preheated and dried in it so that only that part of the coke that enters the melter gasifier 2 hours through pipe 7 can be wet and cold. Thanks to this, the heat balance of the gasifier can be significantly improved. and, as a consequence, the quality of the reducing gas formed in the smelter gasifier has increased. Loaded into a shaft furnace 1, coke also contributes to the fact that H, obtained during the reduction of iron ore, is partially re-converted into CO and HI. Thereby approaching.
    314
    finally, a direct reduction to the blast furnace, in which iron oxide and carbon monoxide is formed from iron oxide and carbon. This reduces the need for reducing gas and, consequently, reduces carbon and oxygen consumption.
    Adding coke to the iron ore in the shaft furnace 1 also leads to a significant prevention of sticking of the sponge iron. This allows working at relatively high temperatures in the shaft furnace, which in turn provides a greater degree of reduction.
    A more complete reduction is also achieved in the case when the reducing gas blown into the shaft furnace through Bustle-miocKocTb contains a relatively large amount of carbon dioxide. This carbon dioxide is partially converted by coke in a shaft furnace to carbon monoxide, which can contribute to a more complete reduction of iron ore.
    Due to the high temperature of the reducing gas, as well as the possibility of converting carbon dioxide to carbon monoxide using coke in a shaft furnace, it is possible to load unburnt additives, such as limestone or dolomite, which can be preheated and neutralized in a shaft furnace into the shaft furnace.
    0
    five
    9A
    0
    25
    thirty
    35
    14
    For this purpose, a pipeline 17 is provided, which is connected to the corresponding inlet openings in the upper zone of the shaft furnace 1.
    权利要求:
    Claims (3)
    [1]
    1. A method for producing iron from iron ore, including the reduction of iron oxides to iron sponge in a shaft furnace using hot reducing gases, melting iron sponge in the melting chamber - gas cylinder, supplying a fine fraction of carbon-containing material to produce a reducing gas, characterized in that In order to improve the performance of the melter gasifier, high-temperature coke from the lignite of 10-50 mm is fed as carbon-containing material, which is fed into the shaft furnace along with iron ore.
    [2]
    2. Method POP1, characterized in that the fraction of 10-50 mm in the total amount of high-temperature coke is 5-60%, preferably 10-30%
    [3]
    3. Method according to paragraphs. 1 and 2, of which is due to the fact that part of the exhaust gas of the shaft furnace of the direct
     the reduction is added to the gas formed in the melter gasifier to cool it.
    7
    P
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1429941A3|1988-10-07|Method of producing pig iron
    US4806154A|1989-02-21|Process for the production of pig iron from fine ore using plasma burner
    CA1118211A|1982-02-16|Method for the direct reduction of ironusing gas from coal
    RU2271396C2|2006-03-10|Hearth melting furnace and method of its operation for production of iron or steel
    KR940004897B1|1994-06-04|Process for gaining electric energy in addition to producing molten pig iron and an arrangement for carrying out the process
    CA1266780A|1990-03-20|Process for producing pig iron
    KR19980040225A|1998-08-17|Method and apparatus for producing molten pig iron and molten steel pre-products
    MX2007005031A|2007-06-19|Process for producing molten iron and apparatus therefor.
    RU2496884C2|2013-10-27|Method for cast-iron melting with return of blast furnace gas at addition of hydrocarbons
    US4380469A|1983-04-19|Process and apparatus for continuously reducing and melting metal oxides and/or pre-reduced metallic materials
    US4685964A|1987-08-11|Method and apparatus for producing molten iron using coal
    SU1498396A3|1989-07-30|Method of producing molten iron or steel semiproduct from iron-containing material
    CA2150456A1|1994-06-09|Process and device for producing pig iron from iron ore or for thermally and/or chemically treating an easily decomposable material
    PL76243B1|1975-02-28|
    RU2263714C2|2005-11-10|Method and apparatus for producing of cast iron or liquid steel products from iron-ore containing burden
    AU701539B2|1999-01-28|Process for producing sponge iron and plant for carrying out the process
    SE8502922D0|1985-06-12|PROCEDURES UNDER CONTINUOUS CONTINUOUS REVENUE
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    CA2136692A1|1995-06-14|Method and apparatus for producing iron
    US2526659A|1950-10-24|Continuous smelting process
    SU1641194A3|1991-04-07|Process for producing hot metal or steel semiproducts from ferriferrous lump material
    CN1087951A|1994-06-15|Method and apparatus with the ore direct steelmaking
    EP0326403A2|1989-08-02|Process for melting cold iron material
    CN86105494A|1987-07-08|Brown coal pre-reduction of ore direct steelmaking stocking
    JP2000503350A|2000-03-21|How to make sponge iron
    同族专利:
    公开号 | 公开日
    DE3570890D1|1989-07-13|
    CN1009736B|1990-09-26|
    CA1247864A|1989-01-03|
    DE3503493C2|1987-10-22|
    DD246568A5|1987-06-10|
    KR900004107B1|1990-06-15|
    JPH0416525B2|1992-03-24|
    DE3503493A1|1986-08-14|
    ZA859200B|1986-12-30|
    EP0192912A1|1986-09-03|
    EP0192912B1|1989-06-07|
    AU564749B2|1987-08-27|
    BR8600341A|1986-10-14|
    KR860005886A|1986-08-13|
    JPS61177309A|1986-08-09|
    CN86100138A|1986-07-30|
    AU5257986A|1986-10-16|
    US4673432A|1987-06-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2865734A|1955-07-19|1958-12-23|British Iron Steel Research|Treatment of metal-containing materials|
    US4306903A|1977-02-16|1981-12-22|Midrex Corporation|Method for reducing particulate iron oxide to molten iron with solid reductant and oxy-fuel burners|
    MX153453A|1979-07-16|1986-10-16|Mindres Int Bv|IMPROVEMENTS IN METHOD AND APPARATUS FOR THE PRODUCTION OF CAST CAST IRON|
    US4235425A|1979-07-16|1980-11-25|Midrex Corporation|Impact bed gasifier-melter|
    DE3034539C2|1980-09-12|1982-07-22|Korf-Stahl Ag, 7570 Baden-Baden|Method and device for the direct production of liquid pig iron from lumpy iron ore|
    SE457265B|1981-06-10|1988-12-12|Sumitomo Metal Ind|PROCEDURE AND ESTABLISHMENT FOR PREPARATION OF THANKS|
    DE3328373A1|1982-11-15|1984-05-17|Korf Engineering GmbH, 4000 Düsseldorf|METHOD AND SYSTEM FOR THE DIRECT PRODUCTION OF SPONGE IRON PARTICLES AND LIQUID PIPE IRON FROM PIECE IRON ORE|
    AT376243B|1983-01-19|1984-10-25|Voest Alpine Ag|METHOD FOR MELTING AT LEAST PARTLY REDUCED IRON ORE|
    DE3437913C2|1984-10-12|1987-05-07|Korf Engineering Gmbh, 4000 Duesseldorf, De|DE3437913C2|1984-10-12|1987-05-07|Korf Engineering Gmbh, 4000 Duesseldorf, De|
    DE3504346C2|1985-02-06|1986-11-27|Korf Engineering GmbH, 4000 Düsseldorf|Method and device for the production of sponge iron particles and liquid pig iron|
    AU582453B2|1985-07-18|1989-03-23|Kabushiki Kaisha Kobe Seiko Sho|Melt-reductive iron making method from iron ore|
    JPH079015B2|1985-07-19|1995-02-01|株式会社神戸製鋼所|Smelting reduction method for iron ore|
    AT387038B|1986-11-25|1988-11-25|Voest Alpine Ag|METHOD AND SYSTEM FOR RECOVERING ELECTRICAL ENERGY IN ADDITION TO THE PRODUCTION OF LIQUID PIPE IRON|
    DE3644775C2|1986-12-23|1988-11-17|Korf Engineering Gmbh, 4000 Duesseldorf, De|
    DE3716511C2|1987-05-16|1989-07-06|Deutsche Voest-Alpine Industrieanlagenbau Gmbh, 4000 Duesseldorf, De|
    AT390622B|1988-10-25|1990-06-11|Voest Alpine Ind Anlagen|METHOD AND INSTALLATION FOR THE PRODUCTION OF LIQUID PIG IRON|
    DE4216891A1|1992-05-21|1993-11-25|Kortec Ag Zug|Method and device for heating and melting lumpy iron sponges|
    US5397376A|1992-10-06|1995-03-14|Bechtel Group, Inc.|Method of providing fuel for an iron making process|
    US6197088B1|1992-10-06|2001-03-06|Bechtel Group, Inc.|Producing liquid iron having a low sulfur content|
    US5320676A|1992-10-06|1994-06-14|Bechtel Group, Inc.|Low slag iron making process with injecting coolant|
    US5354356A|1992-10-06|1994-10-11|Bechtel Group Inc.|Method of providing fuel for an iron making process|
    AT403055B|1993-05-07|1997-11-25|Voest Alpine Ind Anlagen|METHOD FOR RECYCLING IRONIC WASTE OR RESIDUES|
    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|
    AT407054B|1998-01-15|2000-12-27|Voest Alpine Ind Anlagen|METHOD FOR PRODUCING LIQUID PIG IRON|
    KR100584732B1|2001-04-27|2006-05-30|주식회사 포스코|Recycling method of waste material by using of coal based iron making process|
    US20050151307A1|2003-09-30|2005-07-14|Ricardo Viramontes-Brown|Method and apparatus for producing molten iron|
    KR100797824B1|2006-12-18|2008-01-24|주식회사 포스코|Ironmaking apparatus directly using coals and fine ores|
    AU2008295564B2|2007-09-04|2011-12-01|Cardero Resource Corporation|Direct processing of metallic ore concentrates into ferroalloys|
    AT506042A1|2007-11-13|2009-05-15|Siemens Vai Metals Tech Gmbh|METHOD FOR MELTING RAW IRONS AND STEEL PREPARED PRODUCTS IN A MELTING GASER|
    WO2011147006A1|2010-05-24|2011-12-01|Henrique Carlos Pfeifer|Arrangements for liquid steel production unit|
    CN105289220B|2014-05-30|2017-10-31|宝山钢铁股份有限公司|The cyclic drying system and method for high-temperature reductibility protective gas|
    CN106048212B|2016-06-07|2017-11-28|东南大学|One kind classification reduction burning produces sintering deposit and separates CO2Device and method|
    CN106048214B|2016-06-07|2017-11-28|东南大学|A kind of synthesis gas reduction burning produces sintering deposit and separates CO2Devices and methods therefor|
    CN106086282B|2016-06-22|2018-07-03|张英华|A kind of COREX fused reduction iron-smeltings equipment and iron smelting method|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3503493A|DE3503493C2|1985-01-31|1985-01-31|
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