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    Facility for reducing metal oxide, method for operating the facilities and moldings as raw material to be charged to reduction furnace
    1.
    发明授权
    Facility for reducing metal oxide, method for operating the facilities and moldings as raw material to be charged to reduction furnace 有权
    减少金属氧化物的设备，操作设备和模具的方法作为要还原炉的原料

    公开(公告)号：US06755888B2

    公开(公告)日：2004-06-29

    申请号：US09913287

    申请日：2001-11-02

    申请人： Tetsuharu Ibaraki ,  Takashi Hiromatsu ,  Satoshi Kondo ,  Shoji Imura ,  Yoichi Abe

    发明人： Tetsuharu Ibaraki ,  Takashi Hiromatsu ,  Satoshi Kondo ,  Shoji Imura ,  Yoichi Abe

    IPC分类号： C21B1308

    CPC分类号： C21B13/105 ,  C21B13/10 ,  Y02P10/212

    摘要： The present invention provides a reducing furnace of the rotary hearth-type and a method for reducing a metal oxide simplified in the process from dehydration to molding, according to which a moisture-rich powdery raw material is reduced at low cost. The present invention also provides an operation method whereby dusts or sludge generated in the refining or processing of metal are economically recycled. A powdery mixture having a moisture content of 100% or higher relative to the total mass of a metal oxide-containing powder and a carbon-containing powder is made into a slurry and mixed by stirring. Thereafter, the slurry is dehydrated to a moisture content of 16 to 26% and compression-molded into articles. The cylindrical or granular shaped articles having a thickness or diameter of 30 mm or less thus obtained are fed to a zone the atmospheric temperature of which is 1170° C. or lower in the furnace and reduced through calcination by a rotary hearth reducing furnace thereby to provide a metal.

    摘要翻译： 本发明提供一种转底炉的还原炉和一种简化从脱水到成型的方法，其中富含水分的粉末原料以低成本降低。 本发明还提供了一种操作方法，其中在金属的精炼或加工中产生的灰尘或污泥经济地回收。相对于含金属氧化物的粉末的总质量，水分含量为100％或更高的粉末混合物 将含碳粉末制成浆料并通过搅拌混合。 此后，将该浆液脱水至含水率为16〜26％，并压缩成型。 将由此获得的具有30mm或更小的厚度或直径的圆柱形或颗粒状制品送入炉中的气氛温度为1170℃或更低的区域，并通过旋转炉床还原炉进行煅烧而还原， 提供金属。

    Facility for reducing metal oxide, method of operating the same, and shaped article of raw material for reducing furnace
    2.
    发明授权
    Facility for reducing metal oxide, method of operating the same, and shaped article of raw material for reducing furnace 有权
    用于还原金属氧化物的设备，其操作方法和用于还原炉的原料成形制品

    公开(公告)号：US07192552B2

    公开(公告)日：2007-03-20

    申请号：US10834870

    申请日：2004-04-30

    申请人： Tetsuharu Ibaraki ,  Takashi Hiromatsu ,  Satoshi Kondo ,  Shoji Imura ,  Yoichi Abe

    发明人： Tetsuharu Ibaraki ,  Takashi Hiromatsu ,  Satoshi Kondo ,  Shoji Imura ,  Yoichi Abe

    IPC分类号： C21B7/16 ,  C21B13/14

    CPC分类号： C21B13/105 ,  C21B13/10 ,  Y02P10/212

    摘要： The present invention provides a reducing furnace of the rotary hearth-type and a method for reducing a metal oxide simplified in the process from dehydration to molding, according to which a moisture-rich powdery raw material is reduced at low cost. The present invention also provides an operation method whereby dusts or sludge generated in the refining or processing of metal are economically recycled.A powdery mixture having a moisture content of 100% or higher relative to the total mass of a metal oxide-containing powder and a carbon-containing powder is made into a slurry and mixed by stirring. Thereafter, the slurry is dehydrated to a moisture content of 16 to 26% and compression-molded into articles. The cylindrical or granular shaped articles having a thickness or diameter of 30 mm or less thus obtained are fed to a zone the atmospheric temperature of which is 1170° C. or lower in the furnace and reduced through calcination by a rotary hearth reducing furnace thereby to provide a metal.

    摘要翻译： 本发明提供一种转底炉的还原炉和一种简化从脱水到成型的方法，其中富含水分的粉末原料以低成本降低。 本发明还提供了一种操作方法，其中在金属的精炼或加工中产生的灰尘或污泥经济地回收利用。 将含有金属氧化物的粉末和含碳粉末的总质量相对于水分含量为100％以上的粉末状混合物制成浆料并通过搅拌混合。 此后，将该浆液脱水至含水率为16〜26％，并压缩成型。 将由此获得的具有30mm或更小的厚度或直径的圆柱形或颗粒状制品送入炉中的气氛温度为1170℃或更低的区域，并通过旋转炉床还原炉进行煅烧而还原， 提供金属。

    Metal oxide-containing green pellet for reducing furnace, method for production thereof, method of reduction thereof, and reduction facilities
    7.
    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。

    Metal oxide-bearing green pellets for reducing furnace, method of production of same, method of reduction of same, and reduction facility
    8.
    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-bearing green pellets for reducing furnace, method of production of same, method of reduction of same, and reduction facility
    9.
    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。