• 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:
    This invention relates to the field of coke-free iron metallurgy. The aim of the invention is to increase the productivity and utilization of zinc. The method of removing zinc from the melt is carried out in a plant for the production of cast iron, combining a direct reduction shaft furnace 1 and a melting gas generator 2. Suction gas extracted from the melting gas generator 2 is dedusted in two stages, and in the first stage in a cyclone 16 operating at a temperature of 1000 ° C, coal dust with a low zinc content is deposited, which returns to the melter gas generator 2, and in the second stage in a cyclone 21 after cooling the gas coming from the first cyclone 16 at a temperature of 800 ° C zinc rich solids are precipitated. The reduced zinc reducing gas is returned to the direct reduction shaft furnace 1, and the enriched materials deposited in the second cyclone 21 are processed into zinc concentrate 22. 1 hp f-ly, 2 ill.
    公开号:SU1674695A3
    申请号:SU884356851
    申请日:1988-11-11
    公开日:1991-08-30
    发明作者:Кепплингер Вернер
    申请人:Фоест-Альпине Индустрианлагенбау Гмбх (Фирма)；
    IPC主号:
    专利说明:

    Phi
    084
    权利要求:
    Claims (2)
    [1]
    Claim
    1. Method for the production of pig iron, including preliminary reduction of iron-containing oxide materials in a direct shaft furnace, subsequent melting of the resulting sponge iron in the melting gas generator with the simultaneous formation of reducing gas by supplying coal and oxygen-containing gas, cooling, dedusting the obtained gas, returning settled dust to the melting gas generator, at the same time, part of the cooled and dedusted reducing gas is supplied to the reduction zone of the shaft furnace, and excess The recovery gas is processed in a scrubber, further cooled and passed to consumers, characterized in that, in order to increase productivity and increase the degree of use of zinc contained in dust, dust removal is carried out in two stages, while in the first stage dust containing small particles of coal is captured the zinc content at a temperature of the reducing gas of 1000 ° C, and in the second stage, the dust enriched with zinc at a temperature of the reducing gas of 800 ° C, and the dust captured in the first stage is returned to pl luxury villa gasifier, and the dust trapped in the second step, is removed for further processing.
    [2]
    2. The method according to claim 1, characterized in that the reducing gas between the dedusting steps is cooled by adding cold air to it.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1674695A3|1991-08-30|Hot iron production process
    SU1378786A3|1988-02-28|Method of producing pig iron
    RU1813099C|1993-04-30|Method of producing liquid cast iron and installation for performing the method
    CA1288953C|1991-09-17|Process for the production of pig iron from fine ore
    RU2078142C1|1997-04-27|Method of producing cast iron from iron-containing oxide material
    EP1217083A3|2002-10-23|Production of synthetic rutile
    CA2040316A1|1991-10-21|Process for recovering valuable metals from a dust containing zinc
    SU1498396A3|1989-07-30|Method of producing molten iron or steel semiproduct from iron-containing material
    RU2102509C1|1998-01-20|Method for production of high-grade nickel matte and device for its embodiment
    EP0686703B1|2001-02-21|Method of making pig iron with zinc recovery
    RU2003101968A|2004-07-27|METHOD FOR RECYCLING WASTE USING THE PROCESS OF PRODUCING PIG IRON ON THE BASIS OF COAL
    EP0795036A1|1997-09-17|Method for producing iron feedstock
    EA036823B1|2020-12-24|Recovery of metals from calcium-rich materials
    AU594355B2|1990-03-08|Production of molten pig iron and manufacture of gas
    EP0855448A1|1998-07-29|Operation of lead/zinc blast furnaces
    US3333916A|1967-08-01|Process for producing pure fused vanadium oxide from ammonium metavanadate
    JP2005021841A|2005-01-27|Processing method of zinc-containing dust, and producing method of zinc carbonate
    US2381024A|1945-08-07|Process of producing iron powder from cheap source material
    JPS5893828A|1983-06-03|Method for obtaining dust suitable for raw material of iron manufacture from dust of steel furnace containing zn
    SU829678A1|1981-05-15|Method of producing sponge iron
    SU1178783A1|1985-09-15|Method of removing skull in metallurgical furnaces by fusion
    RU2034035C1|1995-04-30|Method to produce raw iron
    JPH01247535A|1989-10-03|Method for recovering valuable metal from by-product in production of stainless steel
    Barnard1972|Recycling of steelmaking dusts
    SU1067065A1|1984-01-15|Method for preparing clinker of zinc production for smelting
    同族专利:
    公开号 | 公开日
    AU2414888A|1989-05-18|
    DD283650A5|1990-10-17|
    DE3872490D1|1992-08-06|
    CA1335041C|1995-04-04|
    ZA888246B|1989-08-30|
    EP0316299A3|1990-01-03|
    US4878943A|1989-11-07|
    KR960001710B1|1996-02-03|
    AU605373B2|1991-01-10|
    JP2798942B2|1998-09-17|
    JPH01159333A|1989-06-22|
    BR8805927A|1989-08-01|
    AT388390B|1989-06-12|
    ATA299487A|1988-11-15|
    EP0316299A2|1989-05-17|
    KR900006523A|1990-05-08|
    EP0316299B1|1992-07-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE658356C|1936-08-05|1938-03-31|Huettenwerke Siegerland Akt Ge|Process for obtaining a zinc-rich, low-iron gout dust|
    US2836487A|1955-01-31|1958-05-27|Fur Unternehmungen Der Eisenun|Process for the separation of iron from other metals accompanying iron in ores or waste materials|
    US3975188A|1975-08-11|1976-08-17|Westinghouse Electric Corporation|Arc heater reduction of zinc roast|
    FR2438495B1|1978-10-09|1982-06-11|Air Ind|
    US4235425A|1979-07-16|1980-11-25|Midrex Corporation|Impact bed gasifier-melter|
    ZA814797B|1980-07-24|1982-07-28|Gib Precision Ltd|Torque limiting clutch|
    IT1156318B|1982-09-08|1987-02-04|Samim Soc Azionaria Minero Met|METALLIC CHLORIDE PRODUCTION PROCESS|
    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|
    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|
    DE3603894C2|1986-02-05|1993-03-18|Deutsche Voest-Alpine Industrieanlagenbau Gmbh, 4000 Duesseldorf, De|CH677195A5|1989-02-09|1991-04-30|Fischer Ag Georg|
    US4963766B1|1989-06-28|1992-08-04|Digital Equipment Corp|
    AT395435B|1991-02-19|1992-12-28|Voest Alpine Ind Anlagen|METHOD FOR COMMISSIONING A PLANT FOR PRODUCING RAW IRON OR STEEL PRE-MATERIAL, AND PLANT FOR IMPLEMENTING THE METHOD|
    US6197088B1|1992-10-06|2001-03-06|Bechtel Group, Inc.|Producing liquid iron having a low sulfur content|
    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|
    US5354356A|1992-10-06|1994-10-11|Bechtel Group Inc.|Method of providing fuel for an iron making process|
    FI94430C|1993-01-26|1995-09-11|Outokumpu Research Oy|Process for the utilization of smelter waste containing zinc and other precious metals|
    US5958107A|1993-12-15|1999-09-28|Bechtel Croup, Inc.|Shift conversion for the preparation of reducing gas|
    NL9400936A|1994-06-09|1996-01-02|Hoogovens Groep Bv|Method for treating zinc-containing dust.|
    AT405523B|1996-03-05|1999-09-27|Voest Alpine Ind Anlagen|METHOD FOR THE PRODUCTION OF LIQUID PIPE IRON AND AT LEAST PARTLY REDUCED NON-FERROUS ORE, AND SYSTEM FOR IMPLEMENTING THE METHOD|
    AT405528B|1996-07-10|1999-09-27|Voest Alpine Ind Anlagen|METHOD FOR RECYCLING DUST DURING METALLURGICAL PROCESSES|
    KR100584745B1|2001-12-21|2006-05-30|주식회사 포스코|An apparatus and method for recycling dust and sludge containing iron ironmaking process using coal and fine ore|
    EP1826281A1|2006-02-24|2007-08-29|Paul Wurth S.A.|Method for producing molten pig iron or steel pre-products in a melter gasifier|
    US8377175B2|2010-02-26|2013-02-19|Arcelormittal Investigacion Y Desarrollo, S.L.|Apparatus and method for treating exhaust gas|
    CN103966380B|2013-01-24|2016-06-29|宝山钢铁股份有限公司|A kind of method recycling shaft furnace top coal gas dust removal powder|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT299487A|AT388390B|1987-11-12|1987-11-12|METHOD FOR DEZINCIFYING THE FLOW OF MATERIAL WHEN OPERATING A PLANT FOR PRODUCING RAW IRON|
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