• 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 methods for producing molten iron from fine ore. The purpose of the invention is to reduce energy. The fine ore is pre-reduced, then melted and finally reduced in the smelting cyclone. The pre-reduced ore is loaded axially through the central hole 1 into the melting cyclone 2, and carbon carriers (fine coal), if necessary, slag-forming additives along with oxygen-containing gas or pure oxygen are blown tangentially, which ensures the rotation of small particles of spongy iron and their fast recovery to the finished condition Then the molten iron passes through a layer of coke 4 and through a layer of slag 5 with a height of 20-100 cm, which ensures the leveling of unevenness in the content of FEO. 1 il.
    公开号:SU1537142A3
    申请号:SU864010150
    申请日:1986-01-20
    公开日:1990-01-15
    发明作者:Папст Геро；Хаук Рольф
    申请人:Корф-Инжинеринг Гмбх (Фирма)；
    IPC主号:
    专利说明:

     U4
    5 6 The invention relates to metallurgy, in particular to the production of blast iron from fine ore.
    The purpose of the invention is to reduce energy.
    The drawing schematically shows a melting cyclone.
    Through the central opening 1 in the region of the lid, the previously restored sponge iron is fed into the melting cyclone 2, for example, through a lock valve or pneumatically. Preliminary reduction of iron ore is preferably carried out in several stages, and it can be carried out in fluidized beds in reducing cyclones or in a reactor with volatile dust. The reducing gas of the melting cyclone 2 is used as a reducing gas after appropriate cooling. Through the hole 3 on the side of the region of the lid, fine coal and additives together with oxygen-containing gas, preferably pure oxygen, are blown tangentially into the melting cyclone 2. Due to the rotation formed here, the fine particles of sponge iron very quickly deflect towards the outer wall and at the same time they are restored to the finished state by the hot gasifying gas and melted. Then the molten iron passes through the layer of wheel k and through the layer of slag 5 and forms an iron bath 6 at the base of the melting cyclone 2. The blast-iron and liquid slag occasionally ... melt through the notch 7. The layer of coke h is intended to compensate for uneven contents Fed. In the lid of the collector in the expanded lower part of the melting cyclone 2 there are holes 8 for installing additional oxygen or plasma torches. With the help of these burners, it is possible to increase the temperature in the lower region of the melting cyclone 2, if the latter is only insufficient combustion of the fine coal introduced through the opening 3. Preheating stage flue gas can be used to heat the plasma torches. The oxygen blown through the opening 3 can also be heated. There is also the possibility of additional induction heating of the melting cyclone.
    0
    Formed in a melting cyclone
    2gas is used as a reducing gas for the pre-reduction of fine ore. However, for this it should be cooled from about 1500 to about 800 ° C. Therefore, it is directed from the gas outlet 9 first to the exhaust heat system 10, in which it is cooled to approximately 900 ° C. Then, through line 11, cooling gas is admixed to it so that it can be brought to a suitable recovery temperature. Preferably, the process gas can be used as a cooling gas in the pre-reduction stage, which is preferably previously subjected to a C0a wash.
    Rotation entered through the hole
    The tangential materials can be varied to adjust the optimum process conditions in a simple manner, for example, by appropriately shifting the aperture 3.
    The melting process and the final reduction are carried out in one melting cyclone, in which sponge iron is introduced axially, and the oxygen-containing gas and carbon carrier are injected
    tangentially. Additives can be introduced into the melting cyclone also tangentially. In another advantageous embodiment, the rotation in the melting cyclone can be varied by adjusting the inlet for the oxygen-containing gas. The height of the lump coke bed fed to the smelting cyclone to form a coke layer on the slag layer is preferably in the range of 20-100 cm. Due to this height of the coke layer, uneven FeO content is compensated for, as otherwise with variations in the content of coke. FeO slag would not guarantee a constant amount of pig iron, especially with respect to the sulfur content.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    0
    five
    five
    0
    Method for producing blast iron from shallow ore, including its preliminary reduction, melting and final reduction with axial feeding of previously restored fine ore and tan 5153 M02
    The carbon feed carrier is loaded with a layer of coke of a thickness that differs in a thickness of 20–100 cm, and a tangential layer, which, in order to reduce energy, for the supply of carbon carriers is carried out during the final process, together with oxygen-containing hydrogen reduction and molten sludge.
    类似技术:
    公开号 | 公开日 | 专利标题
    US4806154A|1989-02-21|Process for the production of pig iron from fine ore using plasma burner
    CA1286113C|1991-07-16|Method for the melt reduction of iron ores
    EP0862657B1|2002-05-08|Duplex procedure for the production of metals and metal alloys from oxidic metal ores
    KR19980040225A|1998-08-17|Method and apparatus for producing molten pig iron and molten steel pre-products
    US5043011A|1991-08-27|Process for producing pig iron
    KR900004107B1|1990-06-15|Process for the production of pig iron
    RU2078142C1|1997-04-27|Method of producing cast iron from iron-containing oxide material
    US4396421A|1983-08-02|Method of, and arrangement for, producing molten pig iron or steel pre-material
    US4936908A|1990-06-26|Method for smelting and reducing iron ores
    SU1498396A3|1989-07-30|Method of producing molten iron or steel semiproduct from iron-containing material
    US4551172A|1985-11-05|Process of producing liquid carbon-containing iron
    CS221943B2|1983-04-29|Method of continuous production of non-corroding steel
    SU1537142A3|1990-01-15|Method of producing blast-furnace iron from small-particle ore
    KR930007308B1|1993-08-05|Process for the production of liquid steel or pre-pig iron
    US4995904A|1991-02-26|Method for the pretreatment of a lumpy carbon carrier
    KR100769794B1|2007-10-25|Process and plant for producing pig iron or liquid primary steel products in a blast furnace
    KR100240810B1|2000-01-15|A process for the production of molten pig iron or steel pre-products and a plant for carrying out the process
    US4857105A|1989-08-15|Process for producing pig iron using coal degassing reactor to form reductants
    US5201940A|1993-04-13|Pre-heating and pre-reduction of a metal oxide
    UA45459C2|2002-04-15|METHOD OF OBTAINING LIQUID CAST IRON OR LIQUID SEMI-FINISHED STEEL AND INSTALLATION FOR CARRYING OUT THIS METHOD
    CA2231429C|2006-09-19|Process for producing liquid metal and facilities for carrying out the process
    US6149708A|2000-11-21|Process for producing sponge iron
    NZ551516A|2010-08-27|A direct reduction process characterised by agglomeration of fine ore particles and increased retention time
    US6273934B1|2001-08-14|Method and an apparatus for producing metals and metal alloys
    KR100286689B1|2001-11-22|Apparatus for manufacturing molten pig iron using fluidized bed and method for manufacturing molten pig iron using same
    同族专利:
    公开号 | 公开日
    AU5243786A|1986-07-24|
    EP0189368A2|1986-07-30|
    KR860005888A|1986-08-16|
    DD244358A5|1987-04-01|
    BR8600197A|1986-09-30|
    KR930007309B1|1993-08-05|
    EP0189368A3|1986-11-05|
    DE3502306C2|1988-03-24|
    DE3502306A1|1986-07-24|
    CA1286114C|1991-07-16|
    US4851039A|1989-07-25|
    AU581488B2|1989-02-23|
    JPS61217512A|1986-09-27|
    DE3670099D1|1990-05-10|
    ZA85287B|1986-09-24|
    EP0189368B1|1990-04-04|
    AT51647T|1990-04-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR590612A|1924-12-19|1925-06-19|Process and apparatus for the smelting and reduction of oxidized ores and for the production of iron, or other metals, as well as cement|
    FR747868A|1932-12-20|1933-06-24|Processes and installation for the manufacture and treatment of metals such as onte, steel, etc.|
    US2865733A|1952-04-30|1958-12-23|Finanziaria Siderurgica Finsid|Smelting process|
    GB827957A|1955-03-15|1960-02-10|British Iron Steel Research|Improvements in the production of metal from ores and in apparatus therefor|
    US2973260A|1957-11-04|1961-02-28|Nogiwa Yukio|Method for the treatment of iron ores|
    US2989297A|1958-06-09|1961-06-20|Inland Steel Co|Combined melting hearth and gas reformer apparatus|
    US3002736A|1958-12-08|1961-10-03|Inland Steel Co|Method of operating a combined melting hearth and gas reformer|
    US3028231A|1959-01-01|1962-04-03|British Iron Steel Research|Processing of metallic ores|
    FR1281005A|1961-02-14|1962-01-08|Apparatus for the direct reduction of iron ore or powdered products rich in iron|
    FR1343115A|1962-11-13|1963-11-15|Forsch Roheisenerzeugung|Process for reducing fine-grained ores in the molten state|
    DE1458759C3|1965-12-08|1973-12-20|Gebr. Giulini Gmbh, 6700 Ludwigshafen|Continuous process for the manufacture of steel|
    US3607224A|1968-03-20|1971-09-21|Combustion Eng|Direct reduction of iron ore|
    DE2133860A1|1970-07-07|1972-01-13|Barker, Arnold Verdun, Palm Beach, New South Wales |Direct reduction of iron ore - using cyclone furnace and electric arc or induction furnace|
    AU3092271A|1971-07-06|1973-01-11|Verdun Barker Arnold|Improvements in or relating to the smelting of metal ores|
    US4087274A|1975-07-04|1978-05-02|Boliden Aktiebolag|Method of producing a partially reduced product from finely-divided metal sulphides|
    US4334919A|1979-10-22|1982-06-15|Queneau Paul Etienne|Method of introducing particulate material and a gas into a reactor|
    AT367453B|1980-04-03|1982-07-12|Voest Alpine Ag|METHOD AND DEVICE FOR PRODUCING LIQUID GUT IRON OR STEEL PRE-MATERIAL|
    DE3437913C2|1984-10-12|1987-05-07|Korf Engineering Gmbh, 4000 Duesseldorf, De|
    DE3438487C2|1984-10-17|1987-10-15|Korf Engineering Gmbh, 4000 Duesseldorf, De|US5228901A|1991-02-25|1993-07-20|Idaho Research Foundation, Inc.|Partial reduction of particulate iron ores and cyclone reactor|
    KR100241009B1|1995-12-29|2000-03-02|이구택|Pulverized ore injection method of melt-reduction process|
    CH690378A5|1996-03-04|2000-08-15|Fischer Georg Disa Eng Ag|A process for melting metallic charge materials in a shaft furnace.|
    JP5166804B2|2007-09-19|2013-03-21|株式会社神戸製鋼所|Molten iron manufacturing method|
    DE102015006724A1|2015-05-29|2017-02-02|MAS GbR |High-temperature recycling of residual, waste and waste materials|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3502306A|DE3502306C2|1985-01-21|1985-01-21|
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