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    PROCESS FOR PRODUCING REDUCED IRON PELLETS, AND PROCESS FOR PRODUCING PIG IRON
    6.
    发明申请
    PROCESS FOR PRODUCING REDUCED IRON PELLETS, AND PROCESS FOR PRODUCING PIG IRON 有权
    用于生产减少铁粉的方法，以及生产铁的方法

    公开(公告)号：US20110023657A1

    公开(公告)日：2011-02-03

    申请号：US12673141

    申请日：2008-09-11

    申请人： Tetsuharu Ibaraki ,  Hiroshi Oda

    发明人： Tetsuharu Ibaraki ,  Hiroshi Oda

    IPC分类号： B22F9/20 ,  C21B11/02

    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，在转炉式炉中加热还原含有氧化铁和碳的粉末成形体时，使用原料制造成型体，其中氧化铁的平均直径为50 微米或更小，并且还原区中的一氧化碳与二氧化碳的比例为0.3至1，在1400℃或更低的温度下还原，从而产生铁的金属化率为50的还原铁丸 至85％，残留碳的比例为2％以下。

    Process for producing reduced iron pellets, and process for producing pig iron
    7.
    发明授权
    Process for producing reduced iron pellets, and process for producing pig iron 有权
    生产还原铁丸的方法和生铁生产方法

    公开(公告)号：US09034074B2

    公开(公告)日：2015-05-19

    申请号：US12673141

    申请日：2008-09-11

    申请人： Tetsuharu Ibaraki ,  Hiroshi Oda

    发明人： Tetsuharu Ibaraki ,  Hiroshi Oda

    IPC分类号： C21B5/00 ,  C21B11/06 ,  C22B5/10 ,  C21B13/00 ,  C21B13/10 ,  C22B1/245

    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，在转炉式炉中加热还原含有氧化铁和碳的粉末成形体时，使用原料制造成型体，其中氧化铁的平均直径为50 微米或更小，并且还原区中的一氧化碳与二氧化碳的比例为0.3至1，在1400℃或更低的温度下还原，从而产生铁的金属化率为50的还原铁丸 至85％，残留碳的比例为2％以下。

    Metal oxide-bearing green pellets for reducing furnace, method of production of same, method of reduction of same, and reduction facility
    8.
    发明授权
    Metal oxide-bearing green pellets for reducing furnace, method of production of same, method of reduction of same, and reduction facility 有权
    用于还原炉的含金属氧化物的绿色颗粒，其制造方法，还原方法和还原设备

    公开(公告)号：US07964014B2

    公开(公告)日：2011-06-21

    申请号：US12804844

    申请日：2010-07-29

    申请人： Tetuharu Ibaraki ,  Hiroshi Oda ,  Shoji Imura ,  Masaharu Takahashi

    发明人： Tetuharu Ibaraki ,  Hiroshi Oda ,  Shoji Imura ,  Masaharu Takahashi

    IPC分类号： C22B1/16

    CPC分类号： C22B1/245 ,  C21B13/0046 ,  C21B13/008 ,  C21B13/105 ,  C22B1/2406 ,  C22B5/10 ,  F27B9/16 ,  F27B2009/3607 ,  F27D2003/001 ,  Y02P10/136

    摘要： The present invention provides a method and facility for preventing crumbling and powderization of green pellets when producing high strength green pellets using a powder feedstock and using the pellets in a rotary hearth reducing furnace and for efficiently reducing the same. It comprises kneading by a kneader 5 a feedstock of a powder of a fine particle size (20 to 80 wt % having size of not more than 10 μm) including a metal oxide and carbon-bearing powder fed from a feed storage tank 1 and producing green pellets by a pan type pelletizer 7. The green pellets are screened by a pellet screen 9, then dried by a pellet dryer 11 and reduced by firing in a rotary hearth reducing furnace 13. At that time, the green pellets are continuously conveyed to prevent crumbling.

    摘要翻译： 本发明提供了一种用于在使用粉末原料制备高强度生坯颗粒并在旋转炉床还原炉中使用该颗粒并有效地还原生坯颗粒时，防止生球团粉碎和粉化的方法和设备。 它包括捏合机5将包含金属氧化物的微粒尺寸（20-80重量％，尺寸不大于10μm）的粉末的原料捏合，该原料包括从原料储罐1供给的含有碳的粉末并生产 通过锅式造粒机7生泡粒。生球团丸通过丸粒筛9进行筛选，然后通过粒料干燥器11干燥，并在旋转炉床还原炉13中焙烧还原。此时，将生球团粒连续输送到 防止崩溃。

    Metal oxide-bearing green pellets for reducing furnace, method of production of same, method of reduction of same, and reduction facility
    9.
    发明申请
    Metal oxide-bearing green pellets for reducing furnace, method of production of same, method of reduction of same, and reduction facility 有权
    用于还原炉的含金属氧化物的绿色颗粒，其制造方法，还原方法和还原设备

    公开(公告)号：US20100294079A1

    公开(公告)日：2010-11-25

    申请号：US12804844

    申请日：2010-07-29

    申请人： Tetuharu Ibaraki ,  Hiroshi Oda ,  Shoji Imura ,  Masaharu Takahashi

    发明人： Tetuharu Ibaraki ,  Hiroshi Oda ,  Shoji Imura ,  Masaharu Takahashi

    IPC分类号： B22F9/20

    CPC分类号： C22B1/245 ,  C21B13/0046 ,  C21B13/008 ,  C21B13/105 ,  C22B1/2406 ,  C22B5/10 ,  F27B9/16 ,  F27B2009/3607 ,  F27D2003/001 ,  Y02P10/136

    摘要： The present invention provides a method and facility for preventing crumbling and powderization of green pellets when producing high strength green pellets using a powder feedstock and using the pellets in a rotary hearth reducing furnace and for efficiently reducing the same. It comprises kneading by a kneader 5 a feedstock of a powder of a fine particle size (20 to 80 wt % having size of not more than 10 μm) including a metal oxide and carbon-bearing powder fed from a feed storage tank 1 and producing green pellets by a pan type pelletizer 7. The green pellets are screened by a pellet screen 9, then dried by a pellet dryer 11 and reduced by firing in a rotary hearth reducing furnace 13. At that time, the green pellets are continuously conveyed to prevent crumbling.

    摘要翻译： 本发明提供了一种用于在使用粉末原料制备高强度生坯颗粒并在旋转炉床还原炉中使用该颗粒并有效地还原生坯颗粒时，防止生球团粉碎和粉化的方法和设备。 它包括捏合机5将包含金属氧化物的微粒尺寸（20-80重量％，尺寸不大于10μm）的粉末的原料捏合，该原料包括从原料储罐1供给的含有碳的粉末并生产 通过锅式造粒机7生泡粒。生球团丸通过丸粒筛9进行筛选，然后通过粒料干燥器11干燥，并在旋转炉床还原炉13中焙烧还原。此时，将生球团粒连续输送至 防止崩溃。

    Metal oxide-containing green pellet for reducing furnace, method for production thereof, method of reduction thereof, and reduction facilities
    10.
    发明授权
    Metal oxide-containing green pellet for reducing furnace, method for production thereof, method of reduction thereof, and reduction facilities 有权
    用于还原炉的含金属氧化物的生颗粒，其制备方法，还原方法和还原设备

    公开(公告)号：US07815710B2

    公开(公告)日：2010-10-19

    申请号：US10415675

    申请日：2001-10-30

    申请人： Tetuharu Ibaraki ,  Hiroshi Oda ,  Shoji Imura ,  Masaharu Takahashi

    发明人： Tetuharu Ibaraki ,  Hiroshi Oda ,  Shoji Imura ,  Masaharu Takahashi

    IPC分类号： C22B1/24 ,  C22B1/216

    CPC分类号： C22B1/245 ,  C21B13/0046 ,  C21B13/008 ,  C21B13/105 ,  C22B1/2406 ,  C22B5/10 ,  F27B9/16 ,  F27B2009/3607 ,  F27D2003/001 ,  Y02P10/136

    摘要： The present invention provides a method and facility for preventing crumbling and powderization of green pellets when producing high strength green pellets using a powder feedstock and using the pellets in a rotary hearth reducing furnace and for efficiently reducing the same. It comprises kneading by a kneader 5 a feedstock of a powder of a fine particle size (20 to 80 wt % having size of not more than 10 μm) including a metal oxide and carbon-bearing powder fed from a feed storage tank 1 and producing green pellets by a pan type pelletized 7. The green pellets are screened by a pellet screen 9, then dried by a pellet dryer 11 and reduced by firing in a rotary hearth reducing furnace 13. At that time, the green pellets are continuously conveyed to prevent crumbling.

    摘要翻译： 本发明提供了一种用于在使用粉末原料制备高强度生坯颗粒并在旋转炉床还原炉中使用该颗粒并有效地还原生坯颗粒时，防止生球团粉碎和粉化的方法和设备。 它包括捏合机5将包含金属氧化物的微粒尺寸（20-80重量％，尺寸不大于10μm）的粉末的原料捏合，该原料包括从原料储罐1供给的含有碳的粉末并生产 通过盘式造粒生坯颗粒7.生球团丸通过颗粒筛网9筛选，然后通过颗粒干燥器11干燥，并通过在旋转炉床还原炉13中烧制而还原。此时，将生球团矿连续输送至 防止崩溃。