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    Method of producing reduced iron and production facilities therefor
    2.
    发明申请
    Method of producing reduced iron and production facilities therefor 失效
    生产还原铁及其生产设备的方法

    公开(公告)号：US20010032527A1

    公开(公告)日：2001-10-25

    申请号：US09848280

    申请日：2001-05-04

    申请人： Mitsubishi Heavy Industries, Ltd.

    发明人： Hironori Fujioka ,  Hideaki Mizuki ,  Koichi Hirata ,  Shigeo Itano ,  Susumu Kamikawa ,  Hisao Teramoto ,  Takashi Yamane ,  Shigeki Sueda ,  Tetsumasa Kawamoto

    IPC分类号： C21B011/06 ,  C21B013/08

    CPC分类号： C21B13/14 ,  C21B13/008 ,  C21B13/10 ,  C21B13/105 ,  C22B1/244 ,  C22B1/245 ,  Y02P10/136

    摘要： Several methods and production facilities are provided in order to solve several problems encountered in conventional methods and facilities for producing reduced iron by reducing raw material pellets of a mixture of an iron oxide powder and a reducing material powder in a rotary bed-type reducing furnace and by melting the reduced iron in a sealed-type electro-blast furnace. Re-oxidation of reduced pellets of the mixture pellets is prevented by introducing into a rotary bed-type reducing furnace a reduced gas generated in an electro-blast furnace. In addition, an improved mechanical strength of reduced pellets after direct reduction is attained by applying rolling action to the reduced pellets. A few method and facilities are provided for reliable utilization of wet mixture pellets and a preferable compositions of binders for forming the raw material mixture are selected. A novel charging device for charging raw material pellets is developed which is capable of charging the pellets on the rotary bed as a uniform layer formed by piling one or more pellets.

    摘要翻译： 提供了几种方法和生产设备，以解决用于通过在旋转床式还原炉中还原氧化铁粉末和还原材料粉末的混合物的原料颗粒来生产还原铁的常规方法和设备中遇到的几个问题，以及 通过在密封型电炉中熔化还原铁。 通过向旋转床型还原炉中引入在电炉中产生的还原气体来防止混合物颗粒的还原颗粒的再氧化。 此外，通过向还原颗粒施加滚压作用，可以获得直接还原后的还原颗粒的改善的机械强度。 为了可靠地利用湿混合物颗粒提供了一些方法和设备，并且选择用于形成原料混合物的粘合剂的优选组合物。 开发了一种用于装入原料颗粒的新型充电装置，其能够将通过堆叠一个或多个颗粒形成的均匀层装载在旋转床上的颗粒。

    Apparatus for producing reduced iron and compact drying method applied to the apparatus
    3.
    发明申请
    Apparatus for producing reduced iron and compact drying method applied to the apparatus 失效
    用于生产还原铁和紧凑干燥方法的设备应用于该设备

    公开(公告)号：US20020030309A1

    公开(公告)日：2002-03-14

    申请号：US09953160

    申请日：2001-09-17

    申请人： Mitsubishi Heavy Industries, Ltd.

    发明人： Susumu Kamikawa ,  Kouichi Hirata ,  Hironori Fujioka ,  Hideaki Mizuki ,  Keiichi Sato

    IPC分类号： C21C005/38

    CPC分类号： C21B13/10 ,  C21B13/105 ,  Y02P10/136

    摘要： An apparatus for producing reduced iron, and a compact drying method for application to the apparatus are disclosed. The apparatus comprises a pelletizer or a briquetter for mixing and agglomerating coal as a reducing agent and iron ore as iron oxide to form compacts, a dryer for drying the compacts, a circular rotary hearth type reducing furnace for reducing the dried compacts in a high temperature atmosphere, a first heat exchanger for performing heat exchange between a hot off-gas discharged from the reducing furnace and combustion air to be supplied to the reducing furnace, and coolers for cooling the hot off-gas. A second heat exchanger for heating drying air is disposed on an exit side of the first heat exchanger. The drying air heated by the second heat exchanger is supplied to the dryer to dry the compacts with the drying air scant in moisture. Consequently, highly efficient, stable drying in the dryer can be performed, and high quality reduced iron can be produced stably.

    摘要翻译： 公开了一种用于生产还原铁的设备，以及用于该设备的紧凑干燥方法。 该装置包括用于将煤作为还原剂混合和附聚的造粒机或压块机，以及作为氧化铁的铁矿石以形成压块，用于干燥压块的干燥器，用于在高温下还原干燥压块的圆形转底炉式还原炉 气氛，用于进行从还原炉排出的热废气与供给到还原炉的燃烧空气之间的热交换的第一热交换器，以及用于冷却热废气的冷却器。 用于加热干燥空气的第二热交换器设置在第一热交换器的出口侧。 由第二热交换器加热的干燥空气被供给到干燥器中以干燥空气中的湿气干燥空气。 因此，可以进行干燥机的高效，稳定的干燥，能够稳定地制造高品质的还原铁。

    Method of producing reduced iron and production facilities therefor
    4.
    发明申请
    Method of producing reduced iron and production facilities therefor 审中-公开
    生产还原铁及其生产设备的方法

    公开(公告)号：US20020000687A1

    公开(公告)日：2002-01-03

    申请号：US09912498

    申请日：2001-07-26

    申请人： Mitsubishi Heavy Industries, Ltd.

    发明人： Hironori Fujioka ,  Hideaki Mizuki ,  Koichi Hirata ,  Shigeo Itano ,  Susumu Kamikawa ,  Hisao Teramoto ,  Takashi Yamane ,  Shigeki Sueda ,  Tetsumasa Kawamoto

    IPC分类号： C21B013/00 ,  C22B005/14 ,  C22B001/00

    CPC分类号： C21B13/14 ,  C21B13/008 ,  C21B13/10 ,  C21B13/105 ,  C22B1/244 ,  C22B1/245 ,  Y02P10/136

    摘要： Several methods and production facilities are provided in order to solve several problems encountered in conventional methods and facilities for producing reduced iron by reducing raw material pellets of a mixture of an iron oxide powder and a reducing material powder in a rotary bed-type reducing furnace and by melting the reduced iron in a sealed-type electro-blast furnace. Re-oxidation of reduced pellets of the mixture pellets is prevented by introducing into a rotary bed-type reducing furnace a reduced gas generated in an electro-blast furnace. In addition, an improved mechanical strength of reduced pellets after direct reduction is attained by applying rolling action to the reduced pellets. A few method and facilities are provided for reliable utilization of wet mixture pellets and a preferable compositions of binders for forming the raw material mixture are selected. A novel charging device for charging raw material pellets is developed which is capable of charging the pellets on the rotary bed as a uniform layer formed by piling one or more pellets.

    摘要翻译： 提供了几种方法和生产设备，以解决用于通过在旋转床式还原炉中还原氧化铁粉末和还原材料粉末的混合物的原料颗粒来生产还原铁的常规方法和设备中遇到的几个问题，以及 通过在密封型电炉中熔化还原铁。 通过向旋转床型还原炉中引入在电炉中产生的还原气体来防止混合物颗粒的还原颗粒的再氧化。 此外，通过向还原颗粒施加滚压作用，可以获得直接还原后的还原颗粒的改善的机械强度。 为了可靠地利用湿混合物颗粒提供了一些方法和设备，并且选择用于形成原料混合物的粘合剂的优选组合物。 开发了一种用于装入原料颗粒的新型充电装置，其能够将通过堆叠一个或多个颗粒形成的均匀层装载在旋转床上的颗粒。