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WO2003029740A1 - Dispositif de chargement de materiau brut pour creuset - Google Patents

Dispositif de chargement de materiau brut pour creuset Download PDF

Info

Publication number
WO2003029740A1
WO2003029740A1 PCT/JP2002/009470 JP0209470W WO03029740A1 WO 2003029740 A1 WO2003029740 A1 WO 2003029740A1 JP 0209470 W JP0209470 W JP 0209470W WO 03029740 A1 WO03029740 A1 WO 03029740A1
Authority
WO
WIPO (PCT)
Prior art keywords
raw material
straight lines
angle
charging
hearth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2002/009470
Other languages
English (en)
Japanese (ja)
Inventor
Hiroshi Ichikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of WO2003029740A1 publication Critical patent/WO2003029740A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/16—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a circular or arcuate path
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B9/38—Arrangements of devices for charging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0001—Positioning the charge
    • F27D2003/0006—Particulate materials
    • F27D2003/0008—Longitudinal distribution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/0033—Charging; Discharging; Manipulation of charge charging of particulate material

Definitions

  • the present invention relates to a method for heating and reducing iron oxide agglomerates including scale, sludge, dust and the like generated in a steel mill, etc., to produce reduced iron agglomerates in a rotary hearth furnace. It relates to a device for charging iron agglomerates.
  • U.S. Pat. No. 5,589,215 discloses a raw material charging table mounted on a rotary hearth furnace. This table extends across the rotary hearth and has a first end provided with a distribution member and a second end provided with a plurality of discharge slots. From the discharge slot, into a curtain, and charged over the entire width of the rotary hearth that passes under the table.
  • the raw material In the middle between the first and second ends of the table, the raw material should be of uniform thickness (one layer). Is equipped with a leveling tool for adjusting to.
  • one discharge slot is provided in each of several grooves separated by a longitudinal partition (partition), and the inclination angle of the slot can be changed between the inner diameter side and the outer diameter side of the hearth. The amount of raw material charged in the width direction of the hearth is adjusted to ensure that the raw material is evenly distributed over the entire hearth.
  • Japanese Patent Application Laid-Open No. 11-293317 discloses that a frontage of a passage partitioned by a partition as described above is supplied from a frontage of a passage for guiding a raw material to be introduced into an outer peripheral portion of a rotary hearth to a raw material introduced into an inner peripheral portion. There is disclosed a charging device that is gradually narrowed to a frontage of a passage for guiding a vehicle.
  • Japanese Patent Application Laid-Open No. 2000-310488 also discloses a charging method in which the lower side of the leveling tool is inclined to adjust the gap with the table surface so that the supply amount of the raw material is different in the width direction.
  • An apparatus is disclosed.
  • the problem to be solved by the present invention is to solve the problem of clogging and catching of raw materials even when the processing scale is small when charging raw materials into a rotary hearth furnace, and to reduce the raw material on the hearth to one layer.
  • it is necessary to improve the productivity by making it easy to supply the raw material uniformly in the furnace width direction, reducing the temperature difference depending on the raw material position, keeping the reduction rate almost constant.
  • the present invention for solving the above-mentioned problems is directed to a raw material charging apparatus for a rotary hearth furnace for charging and heating and reducing a raw material on a hearth surface, wherein one end of a bottom plate of the charging apparatus is the charging apparatus.
  • the other end has an open end formed by connecting a plurality of continuous straight lines or curved lines, and the plurality of continuous straight lines or curved lines include a virtual line obtained by dividing the hearth surface in the width direction;
  • a raw material charging apparatus for a rotary hearth furnace wherein the raw material charging apparatus is a straight line or a curved line connecting intersections of a straight line parallel to a raw material moving direction of the charging apparatus, and satisfying the expression (1). It is.
  • A, B, C, D Surface area when the hearth surface is divided in the width direction a, b, c, d ...
  • the other bottom plate Projection length of each straight line or curve at the end in the direction perpendicular to the direction of material movement
  • FIG. 1 is a plan view of a hearth and a charging device of a rotary hearth furnace showing an example of the present invention.
  • FIG. 2 is a perspective view showing an example of the charging device according to the present invention.
  • FIG. 3 shows an example of the charging device according to the present invention, and is a cross-sectional view taken along the line AA of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 is a plan view of a rotary hearth furnace in which a charging device 1 is provided on a hearth.
  • FIG. 2 is a perspective view of the charging device 1.
  • FIG. 3 is a sectional view of the charging device 1.
  • One end of the bottom plate 2 of the charging device 1 is fixed to the frame 12 of the device 1, and the other end is formed of a plurality of (four in this example) continuous straight lines 3, 4, 5, 6 as shown in FIG.
  • An open end is formed in a tied shape.
  • a plurality of continuous straight lines 3, 4, 5, and 6, as shown in the example of FIG. And a condition that satisfies the above equation (1).
  • reference numeral 7 denotes a furnace outer wall
  • 8 denotes a furnace inner wall
  • a space between the furnace walls In this example, the hearth surface is divided into four in the width direction, and the surface areas are A, B, C, and D from the outer peripheral side.
  • the lengths (projected lengths) when projecting the continuous straight lines 3 to 6 forming the opening end of the bottom plate 2 in a direction perpendicular to the moving direction of the raw materials were defined as a, b, c, and d from the outer peripheral side.
  • Multiple continuous straight lines may be continuous curves.
  • the raw material can be uniformly supplied from the inner peripheral side to the outer peripheral side of the hearth without partitioning the bottom plate 2 by a partition or the like.
  • the frame 12 of the charging device 1 and the continuous straight lines 3 to 6 By disposing the leveling tool 9 for leveling the raw material 11 to a uniform thickness between the open end portions of the bottom plate as shown, the raw material can be more uniformly supplied to the hearth.
  • the raw material 11 on the bottom plate 2 moves toward the opening end by its own weight and is supplied to the hearth without vibrating the device.
  • the raw material 11 moves toward the opening end and is supplied to the hearth by providing a raw material moving device such as the vibration device 10 shown in FIG. 2, for example.
  • the apparatus of the present invention when charging the raw material such as iron oxide agglomerate into the rotary hearth furnace, the raw material is supplied from the inner peripheral side to the outer peripheral side of the hearth without complicating the apparatus.
  • the amount can be uniform. Therefore, even when the processing scale is small, the raw material can be smoothly charged without clogging or catching of the raw material, and the processing temperature becomes uniform in the width direction of the hearth surface.
  • the provision of a leveling tool allows the material on the charging device to be controlled to almost one layer, and the material tends to be one layer even on the hearth. For this reason, the temperature difference between the upper and lower parts of the raw material layer is small, and the reduction rate is almost constant, so that the productivity is improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture Of Iron (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

L'invention a pour objet de résoudre un problème de blocage ou d'accrochage d'un matériau brut même en cas de traitement à petite échelle, de faciliter la formation d'une couche unique dudit matériau brut sur le creuset, d'assurer une alimentation uniforme sur la largeur de ce creuset, de réduire les différences de température dans les positions du matériau brut, d'obtenir une vitesse de réduction sensiblement constante, d'améliorer la productivité et de satisfaire à des conditions particulières. A cet effet, une extrémité de dispositif de chargement est fixée à un corps de châssis tandis que l'autre extrémité est formée d'une ouverture définie par connexion d'une pluralité de lignes continues droites ou incurvées, ces lignes reliant successivement les intersections entre les largeurs de lignes imaginaires divisant la surface du creuset et des parallèles aux lignes droites dans le sens de déplacement du matériau brut dans le dispositif de chargement. De préférence, un outil de nivelage destiné à niveler le matériau brut est installé entre le corps de châssis du dispositif de chargement et l'extrémité ouverte d'une plaque inférieure. Puis, ce dispositif de chargement est incliné selon un angle égal ou supérieur à l'angle de glissement du matériau brut ou disposé selon un angle inférieur à l'angle de glissement et installé.
PCT/JP2002/009470 2001-09-28 2002-09-13 Dispositif de chargement de materiau brut pour creuset Ceased WO2003029740A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001-299951 2001-09-28
JP2001299951A JP2003106775A (ja) 2001-09-28 2001-09-28 回転炉床炉の原料装入装置

Publications (1)

Publication Number Publication Date
WO2003029740A1 true WO2003029740A1 (fr) 2003-04-10

Family

ID=19120610

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/009470 Ceased WO2003029740A1 (fr) 2001-09-28 2002-09-13 Dispositif de chargement de materiau brut pour creuset

Country Status (3)

Country Link
JP (1) JP2003106775A (fr)
TW (1) TW567300B (fr)
WO (1) WO2003029740A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5407436B2 (ja) * 2008-03-05 2014-02-05 Ｊｆｅスチール株式会社 移動型炉床炉への原料装入方法および原料装入装置
KR101072955B1 (ko) 2009-08-14 2011-10-12 에스비리모티브 주식회사 전지 모듈
CN102080929B (zh) * 2009-11-27 2012-12-19 中冶长天国际工程有限责任公司 一种转底炉用布料装置
CN103438703B (zh) * 2013-06-25 2017-01-18 吉林省华兴粉末冶金科技有限公司 原料铁粉装料装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999019681A1 (fr) * 1997-10-14 1999-04-22 Maumee Research & Engineering, Incorporated Appareil de chargement pour four a sole rotatif
JP2000310488A (ja) * 1999-04-26 2000-11-07 Daido Steel Co Ltd 回転炉床形炉の材料投入装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999019681A1 (fr) * 1997-10-14 1999-04-22 Maumee Research & Engineering, Incorporated Appareil de chargement pour four a sole rotatif
JP2000310488A (ja) * 1999-04-26 2000-11-07 Daido Steel Co Ltd 回転炉床形炉の材料投入装置

Also Published As

Publication number Publication date
TW567300B (en) 2003-12-21
JP2003106775A (ja) 2003-04-09

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