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    GRANULAR METAL PRODUCTION METHOD
    11.
    发明公开
    GRANULAR METAL PRODUCTION METHOD 审中-公开
    VERFAHREN ZUR HERSTELLUNG EINESFEINKÖRNIGENMETALLS

    公开(公告)号：EP2578703A1

    公开(公告)日：2013-04-10

    申请号：EP11792374.8

    申请日：2011-06-03

    申请人： Kabushiki Kaisha Kobe Seiko Sho

    发明人： ITO, Shuzo

    IPC分类号： C21B13/10 ,  C21B11/08 ,  C22B1/16 ,  C22B1/248

    CPC分类号： B22F9/20 ,  C21B13/0046 ,  C21B13/105 ,  C22B1/245 ,  C22B5/10

    摘要： The present invention is to provide a technique that further improves the process for producing granular metal by heating agglomerates containing a metal oxide and a carbonaceous reducing agent, and reducing and melting the metal oxide included in the agglomerates.
    The process for producing granular metal comprising the steps of: feeding agglomerates containing a metal oxide and a carbonaceous reducing agent onto a hearth of a moving hearth-type reduction melting furnace; heating the agglomerates to reduce and to melt the metal oxide; cooling the granular metal obtained by said heating step; and discharging the cooled granular metal out of the furnace to recover the same, wherein the agglomerates having an average diameter of not smaller than 17.5 mm are fed onto the hearth when the agglomerates are heated at a spread density of not lower than 0.5 on the hearth.

    摘要翻译： 本发明提供一种技术，通过加热含有金属氧化物和碳质还原剂的附聚物，还可以进一步改善生产颗粒状金属的方法，还原和熔融附聚物中所含的金属氧化物。 制造颗粒状金属的方法包括以下步骤：将含有金属氧化物和碳质还原剂的附聚物进料到移动的炉床式还原熔融炉的炉床上; 加热附聚物以减少和熔化金属氧化物; 冷却通过所述加热步骤获得的颗粒状金属; 将冷却的粒状金属从炉中排出回收炉，其中，当在炉膛上以不低于0.5的扩散密度加热附着物时，将平均直径不小于17.5mm的附聚物供给到炉床上 。

    APPARATUS AND METHODS FOR PRODUCING DIRECT REDUCED IRON
    12.
    发明公开
    APPARATUS AND METHODS FOR PRODUCING DIRECT REDUCED IRON 审中-公开
    设备和方法的直接还原铁生产

    公开(公告)号：EP2542706A1

    公开(公告)日：2013-01-09

    申请号：EP11750122.1

    申请日：2011-03-02

    申请人： Grossi, Giulio

    发明人： Grossi, Giulio

    IPC分类号： C21B13/08 ,  C21B13/10

    CPC分类号： C21B13/06 ,  C21B13/105 ,  C21B13/143 ,  F27B9/185 ,  Y02P10/136

    摘要： A hearth furnace for producing direct reduced iron is described. The furnace has first and second combustion chambers, each having a rotating hearth within it to receive iron oxide and reducing agent. A set of rabbles disposed over each of the rotating hearths interacts with the iron oxide and pushes the iron oxide towards an inside or an outside edge of each rotating hearth. The first combustion chamber having an outlet connected to an inlet of the second combustion chamber to receive materials pushed by the rabbles of the first combustion chamber to the first combustion chamber outlet. The furnace further comprising one or more gas transfer channels for transferring reduction gasses and heat between the second and first combustion chambers.

    APPARATUS AND METHOD FOR PRODUCING REDUCED IRON USING ALKALI-CONTAINING IRON PRODUCTION DUST AS THE RAW MATERIAL
    14.
    发明公开
    APPARATUS AND METHOD FOR PRODUCING REDUCED IRON USING ALKALI-CONTAINING IRON PRODUCTION DUST AS THE RAW MATERIAL 审中-公开
    装置和方法还原铁制造碱铁生产粉尘为原料

    公开(公告)号：EP2458021A1

    公开(公告)日：2012-05-30

    申请号：EP10802289.8

    申请日：2010-07-21

    申请人： Kabushiki Kaisha Kobe Seiko Sho

    发明人： Sugiyama Takeshi ,  Yoshida Shohei ,  Fujita Kyoichiro ,  Misawa Ryota

    IPC分类号： C21B13/10 ,  C22B1/16

    CPC分类号： C22B1/243 ,  C21B13/105 ,  C22B1/245 ,  C22B5/10 ,  C22B7/02 ,  Y02P10/136 ,  Y02P10/216

    摘要： Provided is a movable hearth furnace for thoroughly removing alkali metal elements and producing high-strength reduced iron when producing reduced iron using iron production dust containing alkali metal elements in a movable hearth furnace. The movable hearth furnace comprises: a reduction zone for heating and reducing a carbon composite briquette (C) to produce a reduced briquette (D) having an iron metallization rate of 80% or greater; an alkali removal zone, disposed after the reduction zone, for heating the reduced briquette in a reducing atmosphere and removing the alkali metal elements from the reduced briquette to obtain an alkali-free reduced briquette; and a strengthening zone, disposed after the alkali removal zone, for heating the alkali-free reduced briquette in an oxidizing atmosphere and raising the crushing strength of the alkali-free reduced briquette to produce reduced iron product.

    摘要翻译： 提供了一种用于去除彻底碱金属元素和生产高强度还原铁当使用铁粉尘产生含有在可移动的炉床炉碱金属元素制造还原铁的可移动型炉床炉。 移动型炉床炉包括：用于加热和还原碳复合团块（C）还原区，以产生具有为80％或更高的铁的金属化率降低的团块（D）; 碱脱除区，还原区后丢弃，用于在还原气氛中加热还原团块并除去从还原团块中的碱金属元素，以获得对无碱减少团块; 和加强区，碱金属除去区域之后布置用于加热所述无碱减少团块到氧化性气氛，提高无碱减少团块的压碎强度，以产生还原铁产品。

    METHOD AND APPARATUS FOR PRODUCING REDUCED METAL
    16.
    发明授权
    METHOD AND APPARATUS FOR PRODUCING REDUCED METAL 有权
    方法和设备制造还原金属

    公开(公告)号：EP1634968B1

    公开(公告)日：2012-01-25

    申请号：EP04719633.2

    申请日：2004-03-11

    申请人： KABUSHIKI KAISHA KOBE SEIKO SHO

    发明人： TOKUDA, Koji, c/o KABUSHIKI KAISHA KOBE SEIKO SHO ,  KIKUCHI, Shoichi, c/o KABUSHIKI K. KOBE SEIKO SHO ,  TSUGE, Osamu, c/o KABUSHIKI KAISHA KOBE SEIKO SHO

    IPC分类号： C21B13/10 ,  C22B1/16 ,  F27D7/06

    CPC分类号： C21B13/105 ,  C21B13/0006 ,  C21B13/0073 ,  C22B1/245 ,  C22B5/10 ,  F27B9/16 ,  F27D7/06

    摘要： A method for producing reduced iron wherein a raw material feed step of charging a raw material containing a carbonaceous reducing agent and an iron oxides containing material into a rotating hearth furnace, a heating and reduction step of heating said raw material and reducing iron oxides in said raw material, to form reduced iron, a melting step of melting said reduced iron, a cooling step of said molten reduced iron, and a discharging step of discharging said cooled reduced iron to the outside of the furnace are successively carried out in the direction of the movement of the hearth, which comprises providing, in the above furnace, a flow rate adjusting partition wall for controlling the flow of a gas in the furnace, to thereby form the flow of the gas in the furnace in the cooling step along the direction of the movement of the hearth. The above method allows the suitable control of the flow of the outside air (an oxidizing gas) entering from a raw material feeding means, a discharging means or the like, which leads to the solution of a problem that the reduction rate is decreased by said outside air.

    METHOD AND SYSTEM FOR PRODUCING METALLIC IRON NUGGETS
    19.
    发明公开
    METHOD AND SYSTEM FOR PRODUCING METALLIC IRON NUGGETS 有权
    方法和系统对铁的凝乳生产

    公开(公告)号：EP2247759A2

    公开(公告)日：2010-11-10

    申请号：EP09712738.5

    申请日：2009-01-30

    申请人： Nu-Iron Technology, LLC

    发明人： IWASAKI, Iwao ,  ENGLUND, David J. ,  KIESEL, Richard F.

    IPC分类号： C21B11/08 ,  C21B13/10

    CPC分类号： C21B13/105 ,  C21B13/0046 ,  C21B2300/04 ,  C22B1/245 ,  C22B5/10

    摘要： A method and system for producing metallic iron nuggets may include providing multiple layers of agglomerates, such as briquettes, balls and extrusions, of a reducible mixture of reducing material (such as carbonaceous material) and of a reducible iron bearing material (such as iron oxide) on a hearth material layer (such as carbonaceous material) and providing a coarse overlayer of carbonaceous material over at least some of the agglomerates. Heating the agglomerates of reducible mixture to 1425 °C or 1400 °C or 1375 °C results in formation of an intermediate product of one or more metallic iron nuggets, which may have a sulfur content of less than 0.03%, and slag, which may have less than 5% mass MgO, which may have a ratio of percent by weight sulfur in the slag over percent by weight sulfur in the metallic nuggets of at least about 12 or at least about 15.

    PROCESS FOR PRODUCING REDUCED IRON PELLETS, AND PROCESS FOR PRODUCING PIG IRON
    20.
    发明公开
    PROCESS FOR PRODUCING REDUCED IRON PELLETS, AND PROCESS FOR PRODUCING PIG IRON 有权
    生产减少的铁丸的方法，以及生产铁铁的方法

    公开(公告)号：EP2189547A1

    公开(公告)日：2010-05-26

    申请号：EP08830144.5

    申请日：2008-09-11

    申请人： Nippon Steel Corporation

    发明人： IBARAKI, Tetsuharu ,  ODA, Hiroshi

    IPC分类号： C21B13/10 ,  C21B5/00 ,  C22B1/16 ,  C22B1/248

    CPC分类号： C22B5/10 ,  C21B13/0046 ,  C21B13/008 ,  C21B13/105 ,  C22B1/245 ,  Y02P10/216

    摘要： In a method for producing a reduced iron pellet, when a powder formed article including iron oxide and carbon is heated and reduced in a rotary hearth furnace, a formed article produced using a raw material, in which an average diameter of the iron oxide is 50 microns or less and a ratio of carbon monoxide to carbon dioxide in a reduction zone is from 0.3 to 1, is reduced at a temperature of 1400°C or less, thereby producing a reduced iron pellet in which a metallization ratio of iron is 50 to 85% and a ratio of residual carbon is 2% or less.

    摘要翻译： 在还原铁丸的制造方法中，将含有氧化铁和碳的粉末成形体在旋转炉床式炉内加热还原时，使用氧化铁的平均粒径为50μm的原料制造的成形体 微米或更小，并且还原区中一氧化碳与二氧化碳的比率为0.3至1，在1400℃或更低的温度下还原，从而产生还原铁颗粒，其中铁的金属化率为50至100。 85％，残碳率为2％以下。