公开(公告)号：US07311519B2

公开(公告)日：2007-12-25

申请号：US10535903

申请日：2003-11-21

Applicant: Shinji Shima ,  Yuichi Sakurai ,  Masahide Nagatomi

Inventor： Shinji Shima ,  Yuichi Sakurai ,  Masahide Nagatomi

IPC: F27B9/18

CPC classification number: F27D3/0033 ,  F27B3/18 ,  F27B7/32 ,  F27D3/0025 ,  F27D3/12 ,  F27D2003/0063 ,  F27D2003/0066 ,  F27D2003/121

Abstract: The invention provides a raw materials feeding apparatus capable of uniformly dispersing and feeding into a furnace agglomerated raw materials that are likely to undergo dusting, deformation and mutual adhesion. In a raw material feeding apparatus for a rotary hearth furnace, for feeding raw materials to a rotary hearth furnace by using a flat belt conveyor, the invention employs a construction in which a scraper for guiding the raw materials on the flat belt conveyor to a side surface of the flat belt conveyor is arranged obliquely to a traveling direction of the flat belt conveyor. Preferably, the scraper is arranged in such a manner as to guide the raw materials to both sides of the flat belt conveyor.

Abstract translation: 本发明提供一种能够均匀分散并投入炉中的可能发生粉尘，变形和相互粘附的附聚原料的原料进料装置。 在用于转底炉的原材料供给装置中，通过使用平带式输送机将原料供给到转底炉中，本发明采用这样一种结构，其中将用于将平皮带式输送机上的原料引导到一侧 扁平带式输送机的表面倾斜地布置在平带式输送机的行进方向上。 优选地，刮刀布置成将原材料引导到平带式输送机的两侧。

公开(公告)号：US20060035193A1

公开(公告)日：2006-02-16

申请号：US10535903

申请日：2003-11-21

Applicant: Shinji Shima ,  Yuichi Sakurai ,  Masahide Nagatomi

Inventor： Shinji Shima ,  Yuichi Sakurai ,  Masahide Nagatomi

IPC: F27B9/16

CPC classification number: F27D3/0033 ,  F27B3/18 ,  F27B7/32 ,  F27D3/0025 ,  F27D3/12 ,  F27D2003/0063 ,  F27D2003/0066 ,  F27D2003/121

Abstract: The invention provides a raw materials feeding apparatus capable of uniformly dispersing and feeding into a furnace agglomerated raw materials that are likely to undergo dusting, deformation and mutual adhesion. In a raw material feeding apparatus for a rotary hearth furnace, for feeding raw materials to a rotary hearth furnace by using a flat belt conveyor, the invention employs a construction in which a scraper for guiding the raw materials on the flat belt conveyor to a side surface of the flat belt conveyor is arranged obliquely to a traveling direction of the flat belt conveyor. Preferably, the scraper is arranged in such a manner as to guide the raw materials to both sides of the flat belt conveyor.

Abstract translation: 本发明提供一种能够均匀分散并投入炉中的可能发生粉尘，变形和相互粘附的附聚原料的原料进料装置。 在用于转底炉的原材料供给装置中，通过使用平带式输送机将原料供给到转底炉中，本发明采用这样一种结构，其中将用于将平皮带式输送机上的原料引导到一侧 扁平带式输送机的表面倾斜地布置在平带式输送机的行进方向上。 优选地，刮刀布置成将原材料引导到平带式输送机的两侧。

公开(公告)号：US07655181B2

公开(公告)日：2010-02-02

申请号：US12225919

申请日：2007-04-03

Applicant: Shinji Shima ,  Toshitaka Nakayama ,  Masahide Nagatomi

Inventor： Shinji Shima ,  Toshitaka Nakayama ,  Masahide Nagatomi

IPC: C21B13/10

CPC classification number: F27D3/08 ,  C21B13/0046 ,  C21B13/105 ,  F27B9/16 ,  F27B9/30 ,  F27B9/39

Abstract: A reduced iron discharging screw conveyer is provided in a rotary hearth furnace and discharges reduced iron out of the rotary hearth furnace. The rotary hearth furnace produces the reduced iron by charging and heating a pellet including metallic oxide and coal material onto a rotary hearth rotating in a horizontal plane. The reduced iron discharging screw conveyer has a rotary shaft and a screw blade which is spirally formed on an outer surface of the rotary shaft. A lead angle θ of the screw blade 5a satisfies a condition of “0.46 rad ≦θ≦0.79 rad”. A ratio (h/D) between height h of the screw blade and an outer diameter D of the screw conveyer is smaller than 0.2, and a ratio (t/h) between thickness t and height h of the screw blade is larger than or equal to 0.12.

Abstract translation: 在转底炉中设置还原铁排出螺旋输送机，将还原铁从转底炉中排出。 通过将包含金属氧化物和煤材料的颗粒装入并在水平面上旋转的旋转炉床上，将转炉底炉加热并加热，从而生产还原铁。 还原铁排出螺旋输送机具有旋转轴和螺旋形叶片，螺旋形地形成在旋转轴的外表面上。 螺旋叶片5a的导角θ满足“0.46rad <θ= 0.79rad”的条件。 螺旋叶片的高度h与螺旋输送机的外径D之比（h / D）小于0.2，螺旋叶片的厚度t和高度h之间的比率（t / h）大于或等于 等于0.12。

公开(公告)号：US20090045558A1

公开(公告)日：2009-02-19

申请号：US12225919

申请日：2007-04-03

Applicant: Shinji Shima ,  Toshitaka Nakayama ,  Masahide Nagatomi

Inventor： Shinji Shima ,  Toshitaka Nakayama ,  Masahide Nagatomi

IPC: C21B13/08

CPC classification number: F27D3/08 ,  C21B13/0046 ,  C21B13/105 ,  F27B9/16 ,  F27B9/30 ,  F27B9/39

Abstract: [PROBLEMS] It is an object to provide a reduced iron discharging screw conveyer of a rotary hearth furnace, which can reduce maintenance frequency of the screw conveyer and improve operation rates of the rotary hearth furnace by extending wear life of a screw blade of the screw conveyer.[SOLVING MEANS] A reduced iron discharging screw conveyer 5 which is provided in a rotary hearth furnace and discharges reduced iron out of the rotary hearth furnace, the rotary hearth furnace producing the reduced iron by charging and heating a pellet including metallic oxide and coal material onto a rotary hearth rotating in a horizontal plane, the reduced iron discharging screw conveyer has a rotary shaft and a screw blade which is spirally formed on an outer surface of the rotary shaft. A lead angle θ of the screw blade 5a satisfies a condition of “0.46 rad≦θ≦0.79 rad”. A ratio (h/D) between height h of the screw blade and an outer diameter D of the screw conveyer is smaller than 0.2 and a ratio (t/h) between thickness t and height h of the screw blade is larger than or equal to 0.12.

Abstract translation: 本发明的目的是提供一种转底炉的还原铁排放螺旋输送机，其可以通过延长螺杆的螺旋叶片的磨损寿命来减少螺旋输送机的维护频率并提高转底炉的运行速度 输送机 [解决方案]一种还原铁排出螺旋输送机5，其设置在转底炉中并将还原铁从转底炉中排出，转炉底炉通过加热和加热包括金属氧化物和煤材料的颗粒来生产还原铁 在一个在水平面上旋转的旋转炉床上，还原铁排出螺旋输送机具有旋转轴和螺旋形叶片，螺旋形地形成在旋转轴的外表面上。 螺旋叶片5a的导角θ满足“0.46rad <θ= 0.79rad”的条件。 螺旋叶片的高度h与螺旋输送机的外径D之间的比（h / D）小于0.2，螺旋叶片的厚度t和高度h之间的比（t / h）大于或等于 至0.12。