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153 条记录 (耗时 0.021 秒)

    A DEVICE FOR PREVENTING BACK MIXTURE IN A FLUIDIZED BED REACTOR
    2.
    发明授权
    A DEVICE FOR PREVENTING BACK MIXTURE IN A FLUIDIZED BED REACTOR 有权
    设备技术逆流混合IN A FLUIDATBETTREAKTOR预防

    公开(公告)号：EP1165844B1

    公开(公告)日：2003-09-10

    申请号：EP00983519.0

    申请日：2000-12-07

    申请人： POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY

    发明人： KIM, Hang-Goo ,  JEONG, Sun-Kwang ,  LEE, Il-Ock ,  CHOI, Nag-Joon

    IPC分类号： C21B13/02

    CPC分类号： C21B13/0033 ,  Y02P10/136

    摘要： A fluidized bed reduction reactor has a plurality of fluidized bed reactors (10) with inner gas distributors (19). A charge duct (12) passes through the top of the fluidized bed reactor (10) with a free end to charge a fine iron ore into said reactor (10). The free end of the iron ore charging duct (12) is positioned close to the top center of the gas distributor (19). A spiral-shaped partition weir (13) is placed over the gas distributor and surrounds the iron ore charging duct (12) while being spirally extended to an inner wall of the fluidized bed reactor (10) where it is fixed. The fine iron ore is fluidized and reduced while spirally flowing from the center of the fluidized bed rector (10) to its inner wall. In this structure, the back mixture phenomenon where the reacted fine iron ore is mixed with the non-reacted fine iron ore does not occur.

    APPARATUS FOR MEASURING THE STRIP FLATNESS
    3.
    发明公开
    APPARATUS FOR MEASURING THE STRIP FLATNESS 审中-公开
    用于测量的带内平坦度

    公开(公告)号：EP1173296A1

    公开(公告)日：2002-01-23

    申请号：EP00942522.4

    申请日：2000-07-15

    申请人： POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY

    发明人： HONG, Wan-Kee ,  YI, Joon-Jeong

    IPC分类号： B21B38/02

    CPC分类号： B21B38/02

    摘要： The present invention provides an apparatus for measuring flatness of a hot rolled strip based on a contact load of the hot rolled strip applied to split rolls of a looper in the hot rolling process. The split rolls are assembled in a bracket such that each split roll can be separated from the bracket. A normal-movement control unit for moving the split rolls in the normal direction, and a tangent-movement control unit for moving the split rolls in the tangent direction are provided at a side of the bracket bearing the split rolls. An impact absorption unit is mounted at a support that is movably connected to the tangent-movement control unit. A pre-pressure application unit is provided at the support to prevent a sensor cap and a load sensor from being released. A heat-shielding ring surrounds the load sensor to prevent the load sensor from being overheated.

    PRODUCTION METHOD OF DIRECTIONAL ELECTROMAGNETIC STEEL SHEET OF LOW TEMPERATURE SLAB HEATING SYSTEM
    4.
    发明授权
    PRODUCTION METHOD OF DIRECTIONAL ELECTROMAGNETIC STEEL SHEET OF LOW TEMPERATURE SLAB HEATING SYSTEM 失效
    用于生产钢LOOKING磁化使用低BRAMMENAUFHEIZTEMPERATUREN。

    公开(公告)号：EP0709470B1

    公开(公告)日：2001-10-04

    申请号：EP95900316.1

    申请日：1994-11-09

    申请人： POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY

    发明人： CHOI, Gyu Seung, Res.Inst.of Ind.Science & Tech ,  LEE, Chung San, Res.Inst.of Ind. Science & Tech ,  WOO, Jong Soo, Res. Inst.of Ind. Science & Tech. ,  HONG, Byung D., Res. Inst. of Ind.Science & Tech.

    IPC分类号： C21D8/12 ,  C22C38/02

    CPC分类号： C22C38/02 ,  C21D3/04 ,  C21D8/1205 ,  C21D8/1266 ,  G06T9/004

    摘要： This invention relates to a production method of a directional electromagnetic steel sheet used as a core material for a transformer, a motor, a generator, and other electromagnetic appliances. A component system is designed so that a directional electromagnetic steel sheet of a conventional system is heat-treated at approximately 1,250 to 1,300 DEG C which is the same slab heating temperature as in the treating condition of general steels, and is then hot rolled. In this way, the present invention only requires operation in existing production processes without reinforcing the installation or establishing a new one, and stably forms secondary recrystallization in the (110) [001] orientation by securing stably a grain growth restriction force. Therefore, the present invention provides an improved directional electromagnetic steel sheet production method in which a preliminary annealing step is omitted, decarbonization/annealing is carried out at an intermediate thickness and machining energy at a final rolling step is lowered, so as to obtain stable magnetic characteristics. The gist of the present invention resides in a method of producing a directional electromagnetic steel sheet comprising hot rolling, after heating, a slab having a composition consisting, in terms of wt.%, of 0.035 to 0.050 % of C, 2.9 to 3.3 % of Si, not greater than 0.015 % of P, 0.011 to 0.017 % of dissolved Al, 0.0080 to 0.012 % of N, not greater than 0.007 % of S, 0.06 to 0.18 % of Ni+Cr, not greater than 0.32 % of Mn satisfying the condition of Mn/S: 20 or more, not greater than 0.6 % of Cu satisfying the condition Cu/Mn: 1.5 or more, and the balance of Fe, at 1,250 to 1,320 DEG C, regulating the rolled sheet to a final thickness by two cold rolling operations including an intermediate decarbonization/annealing without conducting annealing of the hot rolled sheet, then effecting intermediate annealing and annealing using MgO as the principal component, applying a separating agent, and thereafter conducting final finish annealing to produce a directional electromagnetic steel sheet having excellent magnetic characteristics.

    VERFAHREN ZUM HERSTELLEN VON FLÜSSIGEM ROHEISEN ODER FLÜSSIGEN STAHLVORPRODUKTEN
    5.
    发明授权
    VERFAHREN ZUM HERSTELLEN VON FLÜSSIGEM ROHEISEN ODER FLÜSSIGEN STAHLVORPRODUKTEN 失效
    法生产液态生铁或钢液前兆

    公开(公告)号：EP0914475B1

    公开(公告)日：2001-06-06

    申请号：EP97928042.7

    申请日：1997-06-26

    申请人： VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH ,  POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, INCORPORATED FOUNDATION

    发明人： KEPPLINGER, Leopold, Werner ,  WALLNER, Felix ,  SCHENK, Johannes ,  LEE, Il-Ock ,  KIM, Yong-Ha ,  PARK, Moon, Duk

    IPC分类号： C21B13/14

    CPC分类号： C21B13/14 ,  Y02P10/136

    摘要： In a method of producing liquid pig iron (43) or liquid steel precursors from charges consisting of iron ore (5) and fluxes, having at least in part a proportion of fines, the iron ore is reduced directly to sponge iron in two or more reduction stages (1, 2) by the fluidized-bed method. The sponge iron is then melted in a smelting-gasification zone (39), with carbonaceous materials and oxygenous gas added; a reducing gas containing CO and H2 is generated, which is introduced into the reducing zones of the reduction stages (1, 2), reacts there, is drawn off as top gas, and supplied to a consumer, where appropriate. In order to achieve uniform reduction of the iron ore with optimum utilization of the reducing gas, in a first reduction stage (1), the iron ore (5) is fractionated into two or more fractions of different grain-size distributions, with the help of the reducing gas; each fraction is reduced with the reducing gas in its own fluidized bed (6, 15); the reducing gas sustaining a first fluidized bed (6), containing the coarse-grain fraction, and separating the fine-grain fraction from it, and additional reducing gas being introduced directly into the other fluidized bed (15); reduced iron ore (5) is withdrawn from both the first and the additional fluidized beds (6, 15), and the fine-grain and coarse-grain fractions reduced in the first reduction stage (1) are reduced further in one or more additional reduction stages (2), that operate in the same way as the first reduction stage (1); from the last reduction stage (2), the fine-grain fraction is fed into the smelting-gasification zone (39) under agglomeration by addition of oxygen, and the coarse-grain fraction is gravity-fed directly into the smelting-gasification zone (39).

    VERFAHREN ZUR HERSTELLUNG VON FLÜSSIGEM METALL
    9.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON FLÜSSIGEM METALL 失效
    用于生产液态金属

    公开(公告)号：EP0946758A1

    公开(公告)日：1999-10-06

    申请号：EP97949836.0

    申请日：1997-12-16

    申请人： VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH ,  POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, INCORPORATED FOUNDATION

    发明人： NAGL, Michael

    IPC分类号： C21B13

    CPC分类号： C21B13/002 ,  Y02P10/136

    摘要： According to the inventive method for producing liquid metal (8) comprising at least partly particulate metal supports in a sealing gasifier (2), in which, by feeding either material containing carbon and oxygen or gas containing oxygen, said metal supports are melted in a bed (11) comprised of solid carbon supports, with simultaneous formation of reducing gas, said particulate metal supports are prevented from discharging by being placed into an area exposed to a high temperature maintained by a combustion process, and by being melted at least partly or integrally, while the high temperature combustion area (13) is spatially isolated from the free space (12) of the sealing gasifier (2) situated upstream of the bed and extending into the bed (11), and the flue gas formed in the high temperature combustion area (13) flow out of it while crossed by at least part of the bed(11), is cooled in the bed (11) and removed from the sealing gasifier (2) at the same time as the reducing gas formed in the bed (11).