WO2011065513A1 - Appareil de ségrégation de matériau pour silo supérieur de haut-fourneau - Google Patents

Appareil de ségrégation de matériau pour silo supérieur de haut-fourneau Download PDF

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Publication number
WO2011065513A1
WO2011065513A1 PCT/JP2010/071189 JP2010071189W WO2011065513A1 WO 2011065513 A1 WO2011065513 A1 WO 2011065513A1 JP 2010071189 W JP2010071189 W JP 2010071189W WO 2011065513 A1 WO2011065513 A1 WO 2011065513A1
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WO
WIPO (PCT)
Prior art keywords
bunker
segregation
raw material
distributor
blast furnace
Prior art date
Application number
PCT/JP2010/071189
Other languages
English (en)
Japanese (ja)
Inventor
大友隆史
Original Assignee
Ｊｆｅスチール株式会社
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 Ｊｆｅスチール株式会社 filed Critical Ｊｆｅスチール株式会社
Priority to CN201080052907.2A priority Critical patent/CN102666882B/zh
Priority to KR1020127016154A priority patent/KR101353166B1/ko
Publication of WO2011065513A1 publication Critical patent/WO2011065513A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/18—Bell-and-hopper arrangements
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/18—Bell-and-hopper arrangements
    • C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden
    • 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
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/20—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
    • F27D3/10—Charging directly from hoppers or shoots
    • 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
    • F27D3/10—Charging directly from hoppers or shoots
    • F27D2003/105—Charging directly from hoppers or shoots using shutters

Definitions

  • the present invention relates to a charging material bunker provided at the top of a blast furnace, and is particularly suitable for charging the material into the bunker while segregating the material.
  • a plurality of bunker for individually storing charging raw materials such as iron ore and coke.
  • the opening of the flow rate adjustment gate at the lower end of the bunker and the turning speed of the distribution chute below the bunker are controlled. Increases the degree of freedom of distribution of raw materials.
  • the segregation technology of the raw material charged into the blast furnace top bunker has been developed. Specifically, the particle size of the raw material can be segregated by setting the raw material charging position. And it becomes possible to control the charging characteristic to a blast furnace by segregating the raw material particle size in a bunker in this way.
  • a segregation plate that can rotate around the horizontal axis is provided below the bunker inlet, and the inclination angle of the segregation plate can be changed.
  • the segregation of the raw material into the bunker is controlled by changing the direction.
  • the segregation plate that can rotate around the horizontal axis described in Patent Document 2 may interfere with the inner wall of the bunker during the rotation, the length is regulated, and the raw material is charged in the vicinity of the inner wall of the bunker. There is a problem that the raw material segregation effect is limited.
  • the present invention has been made paying attention to the above-mentioned problems, the raw material segregation of the blast furnace top bunker can be charged in the immediate vicinity of the inner wall of the bunker, and can enhance the raw material segregation effect
  • the object is to provide an apparatus.
  • the present invention is a segregation apparatus for segregating and charging raw materials into a bunker provided at the top of a blast furnace, and is rotatable around a vertical axis at a central portion of the cross section of the bunker.
  • a raw material segregation device for a blast furnace top bunker is provided with a segregation distributor in the upper part of the bunker where the lower side in the vertical direction that receives the raw material charged from above is larger than the repose angle of the raw material.
  • the segregation distributor is preferably a truncated cone whose axis is obliquely downward and has a shape obtained by cutting away the inner wall side portion of the bunker.
  • the inclination angle of the segregation distributor axis is preferably variable.
  • the segregation distributor is preferably rotated around the vertical rotation axis by a motor connected to the vertical rotation axis provided in the central portion of the cross section of the bunker.
  • the segregation distributor is preferably tilted up and down around the horizontal rotation axis by a motor connected to the horizontal rotation axis.
  • the lower side in the vertical direction that receives the raw material that can be rotated around the vertical axis at the center of the cross section of the bunker and that is charged from above is from the angle of repose of the raw material
  • the segregation distributor is shaped like a truncated cone whose axis is obliquely downward and the inner wall side portion of the bunker is cut away, so that the material outlet can be stabilized and interfere with the inner wall of the bunker. Can be reliably avoided. Further, since the inclination angle of the axis of the segregation distributor can be changed, the raw material outlet can be freely adjusted, and the segregation effect can be controlled.
  • FIG. 3A is an explanatory diagram in which the charging material outlet is set on the vertical surface side where the sliding resistance is small
  • FIG. 3B is an explanatory diagram in which the charging material outlet is set on the slope side where the sliding resistance is large.
  • FIG. 1 is a vertical cross-sectional view of a blast furnace top portion to which the cell flying structure of the present embodiment is applied.
  • a plurality of bunker 2 is provided above the top of the blast furnace 1.
  • the bunker 2 stores the raw material 3 charged into the blast furnace 1, respectively. Examples of the charging raw material 3 include coke and iron ore.
  • a gate 16 is provided at the upper end of the bunker 2, and the charging raw material 3 is charged into the bunker by opening the gate 16.
  • a gate 4 is provided at the lower end of the bunker 2, and the internal charging material 3 falls into the blast furnace 1 by opening the gate 4.
  • the raw material segregation apparatus of this embodiment is provided above the inside of the bunker 2.
  • the raw material segregation apparatus includes a segregation distributor 6 whose upper and lower lower side surfaces 12 that are rotatable about the vertical axis 20 at the center of the cross section of the bunker 2 and that receive the raw material charged from above are larger than the repose angle of the raw material. It is provided in the upper part of the bunker 2.
  • FIG. 2 shows a segregation distributor 6 used in the raw material segregation apparatus of this embodiment.
  • FIG. 2 a is a front view of the segregation distributor 6 as in FIG. 1.
  • FIG. 2b is a view taken in the direction of arrow Z in FIG. 2a.
  • FIG. 2c is a view on arrow Y in FIG. 2b.
  • This segregation distributor 6 is a truncated cone whose axis 18 is obliquely downward, and has a shape in which the inner wall side of the bunker 2 shown by a broken line in FIG. Further, the upper part in the vertical direction of the segregation distributor 6 is opened in order to avoid interference with the charged raw material.
  • Reference numeral 6 a in the figure is a charged material guide surface of the segregation distributor 6.
  • This segregation distributor 6 is attached to the hanger 7 at the upper part inside the bunker 2.
  • the charged raw material 3 is charged from above the bunker 2, it falls onto the lower side surface 12 in the vertical direction of the segregation distributor 6. Since the lower surface 12 in the vertical direction of the segregation distributor 6 is larger than the angle of repose of the charging material 3, the charging material 3 dropped on the segregation distributor 6 falls into the bunker 2 from the oblique lower end.
  • the segregation distributor 6 of the present embodiment has an arc cross-sectional shape as shown in FIG. 2c, but is not limited thereto, and may be a circular shape, an elliptical shape, or a polygonal shape. .
  • the hanger 7 is attached to a vertical rotation shaft 22 provided in the center of the cross section of the bunker 2, and the motor 8 is connected to the vertical rotation shaft 22.
  • the vertical rotation shaft and the motor 8 do not need to be directly connected, and for example, a reduction gear mechanism may be interposed.
  • the segregation distributor 6 attached to the hanger 7 rotates around the vertical rotation shaft 22 provided in the center of the cross section of the bunker 2 in the direction of arrow a in FIG. And the inner wall of the bunker 2 do not interfere with each other, and the direction of the outlet 14 of the charging material 3 at the oblique lower end of the segregation distributor 6 can be changed and adjusted.
  • the segregation distributor 6 of the present embodiment has a shape in which the axis 18 is an obliquely downward truncated cone and the inner wall side of the bunker 2 is cut off, so that the oblique lower end of the segregation distributor 6 from which the charged raw material 3 falls. It is possible to set the outlet 14 of the part in the immediate vicinity of the inner wall of the bunker 2.
  • the segregation distributor 6 is rotatably attached to the hanger 7 via a horizontal rotating shaft, and a motor 9 is connected to the horizontal rotating shaft.
  • the horizontal rotation shaft and the motor 9 do not have to be directly connected, and for example, a reduction gear mechanism may be interposed.
  • the segregation distributor 6 attached to the hanger 7 can be rotated (tilted) in the vertical direction around the horizontal rotation axis.
  • the position of the mouth 14 can be changed and adjusted.
  • FIG. 3 is an explanatory diagram of the raw material segregation effect in the bunker 2.
  • the slope on the lower right side of each figure shows the side with higher resistance when the raw material slides, and the vertical plane on the left side of each figure shows the side with lower resistance. Show.
  • the slope that continues toward the gate 4 has a low resistance to raw material sliding, and the slope that once bends has a high resistance to raw material sliding.
  • the charging raw material 3 When the charging raw material 3 is charged from the narrow drop port 14, the charging raw material 3 tends to accumulate in a mountain shape.
  • the angle of slope in this mountain-like piled state is the angle of repose.
  • the charging raw material 3 having a large particle size falls down along the slope of the mountain-like accumulation state, and the charging raw material 3 having a small particle size is the top of the mountain-like accumulation state.
  • FIG. 3a shows the case where the drop 14 of the charging raw material 3 is set on the vertical surface side where the sliding resistance is small
  • FIG. 3b shows the case where the dropping opening of the charging raw material 3 is set on the slope side where the sliding resistance is large.
  • the charging raw material 3 having a large particle size accumulates on the slope side having a large sliding resistance
  • the charging raw material 3 having a small particle size accumulates on the vertical surface side having a small sliding resistance. From this state, when the dropping of the charging raw material 3 is started, the charging raw material 3 with a small particle size first falls first, then the medium charging raw material 3 with a small particle size falls, and finally the charging raw material with a large particle size. 3 falls.
  • the charging raw material 3 having a large particle size accumulates on the vertical surface side having a small sliding resistance, and the charging raw material 3 having a small particle size accumulates on the slope side having a large sliding resistance. From this state, when the dropping of the charging raw material 3 is started, the charging raw material 3 having a large particle size first falls first, then the medium charging raw material 3 falls, and finally the charging raw material having a small particle size. 3 falls.
  • the segregation distributor 6 rotates around the vertical rotation shaft 22 provided in the center of the cross section of the bunker 2.
  • the direction of the drop 14 of the charging raw material 3 at the oblique lower end of the segregation distributor 6 can be changed and adjusted without interfering with the inner wall of the segregation distributor 6, and the axis 18 is a truncated cone with a diagonally downward direction and a bunker Since the segregation distributor 6 having the shape in which the inner wall side of 2 is cut off is used, the outlet 14 at the oblique lower end of the segregation distributor 6 from which the charged raw material 3 falls can be set in the immediate vicinity of the inner wall of the bunker 2. As a result, it is possible to maximize the slope length of the charged raw material 3 in the mountain-like accumulation state, and the raw material segregation effect is great.
  • FIG. 4 is a schematic configuration diagram showing an example of a raw material segregation apparatus of a conventional blast furnace top bunker.
  • a conventional material segregation apparatus is provided with, for example, a segregation plate B that can rotate around a horizontal axis above a bunker 2, receives the material to be charged by the segregation plate B, and slides the material in the tilt direction of the segregation plate B. To improve the segregation effect.
  • the length of the segregation plate B that can rotate around the horizontal axis is restricted in order to avoid interference with the inner wall of the bunker 2.
  • the raw material outlet cannot be set in the immediate vicinity of the inner wall of the bunker 2, and as a result, the slope length of the raw material piled up becomes short, and the raw material segregation effect is achieved. There arises a problem that it cannot be obtained sufficiently.
  • the lower side in the vertical direction that receives the charged raw material 3 that can rotate around the vertical axis 20 at the center of the cross section of the bunker 2 and is charged from above. 12 is provided in the upper part of the bunker 2 because the segregation distributor 6 is larger than the angle of repose of the charging raw material 3. Therefore, when changing the direction of the segregation distributor 6, the segregation distributor 6 is placed on the inner wall of the bunker 2. There is no possibility of interference, and as a result, the charged material outlet 14 of the segregation distributor 6 can be brought close to the inner wall of the bunker 2, thereby enhancing the material segregation effect.
  • the segregation distributor 6 has a shape of a truncated cone whose axis 18 is obliquely downward and the inner wall side portion of the bunker 2 is cut away, the outlet 14 of the charging raw material 3 can be stabilized, and the bunker Interference with the two inner walls can be avoided reliably.
  • the inclination angle of the axis 18 of the segregation distributor 6 can be changed, the outlet 14 of the charged raw material 3 can be freely adjusted, and the segregation effect can be controlled. Further, by rotating the segregation distributor 6 around the vertical rotation shaft 22 by the motor 8 connected to the vertical rotation shaft 22 provided in the central portion of the cross section of the bunker 2, the outlet 14 of the charging raw material 3 is removed.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
  • Manufacture Of Iron (AREA)

Abstract

L'invention porte sur un appareil de ségrégation de matériau pour un silo supérieur de haut-fourneau, ledit appareil de ségrégation de matériau étant apte à charger un matériau au voisinage de la paroi interne du silo de façon à améliorer l'effet de ségrégation de matériau. Un distributeur à ségrégation (6) est disposé au sommet d'un silo (2) de telle manière que le distributeur à ségrégation (6) peut tourner autour de l'axe vertical central (20) perpendiculairement à une section transversale horizontale du silo (2), et que la surface verticalement inférieure du distributeur à ségrégation (6) reçoit un matériau (3) chargé à partir du dessus et a un angle supérieur à l'angle de repos du matériau chargé (3). En résultat, le distributeur à ségrégation (6) n'est pas susceptible d'interférer avec la paroi interne du silo (2) lorsque l'orientation du distributeur à ségrégation (6) est changée, et l'orifice de sortie de matériau chargé (14) du distributeur à ségrégation (6) peut être amené au voisinage de la paroi interne du silo (2). De plus, le distributeur à ségrégation (6) peut avoir une forme tronconique circulaire creuse, qui a une ligne d'axe (18) s'étendant selon un angle vers le bas et qui comprend une partie entaille sur le côté de celle-ci dirigée vers la paroi interne du silo (2) de façon à stabiliser l'orifice de sortie (14) pour le matériau chargé (3) et à empêcher de façon fiable une interférence avec la paroi interne du silo (2).
PCT/JP2010/071189 2009-11-24 2010-11-19 Appareil de ségrégation de matériau pour silo supérieur de haut-fourneau WO2011065513A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201080052907.2A CN102666882B (zh) 2009-11-24 2010-11-19 高炉炉顶原料仓的原料偏析装置
KR1020127016154A KR101353166B1 (ko) 2009-11-24 2010-11-19 고로 노정상 벙커의 원료 편석 장치

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009266421 2009-11-24
JP2009-266421 2009-11-24

Publications (1)

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WO2011065513A1 true WO2011065513A1 (fr) 2011-06-03

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JP (1) JP5810509B2 (fr)
KR (1) KR101353166B1 (fr)
CN (1) CN102666882B (fr)
WO (1) WO2011065513A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016053201A (ja) * 2014-09-04 2016-04-14 Ｊｆｅスチール株式会社 高炉原料の装入方法
CN113167535A (zh) * 2018-11-28 2021-07-23 株式会社保罗伍斯Ihi 炉顶装置
EP4276202A4 (fr) * 2021-02-19 2024-08-14 Jfe Steel Corp Procédé pour charger une matière première dans un haut fourneau

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6183412B2 (ja) 2015-05-28 2017-08-23 Ｊｆｅスチール株式会社 高炉への原料装入装置
CN105296696B (zh) * 2015-11-26 2018-05-18 中冶赛迪工程技术股份有限公司 一种装料防偏析系统
CN108517382B (zh) * 2018-03-29 2020-02-21 江苏省沙钢钢铁研究院有限公司 一种实现高炉内原燃料分级分质入炉的装置及方法
JP7264186B2 (ja) * 2020-06-12 2023-04-25 Ｊｆｅスチール株式会社 炉頂バンカーおよび高炉の原料装入方法
CN116287512A (zh) * 2022-09-05 2023-06-23 武安市裕华钢铁有限公司 一种高炉冶炼炉顶设备及旋转布料溜槽

Citations (1)

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Publication number Priority date Publication date Assignee Title
JP2009001871A (ja) * 2007-06-22 2009-01-08 Sumitomo Metal Ind Ltd ベルレス高炉の原料装入装置および装入方法

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JPS5931563B2 (ja) * 1977-08-11 1984-08-02 石川島播磨重工業株式会社 ベルレス炉頂装入装置における原料分配制御方法
JPS59157206A (ja) * 1983-02-24 1984-09-06 Sumitomo Metal Ind Ltd ベルレス高炉の原料装入方法
JPS61223113A (ja) * 1985-03-28 1986-10-03 Nippon Steel Corp ベルレス式高炉の原料装入方法
JPH0772287B2 (ja) * 1986-10-14 1995-08-02 石川島播磨重工業株式会社 高炉の原料装入装置
JP4460661B2 (ja) * 1998-12-15 2010-05-12 Ｊｆｅスチール株式会社 高炉の炉頂バンカの使用方法
JP3948352B2 (ja) * 2002-06-07 2007-07-25 住友金属工業株式会社 高炉の操業方法およびベルレス式装入装置
CN201125249Y (zh) * 2007-09-21 2008-10-01 李占年 带有匀料板的高炉上料装置
JP4591520B2 (ja) 2008-02-15 2010-12-01 Ｊｆｅスチール株式会社 炉頂バンカ及びベルレス型装入装置を用いた高炉の原料装入方法

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Publication number Priority date Publication date Assignee Title
JP2009001871A (ja) * 2007-06-22 2009-01-08 Sumitomo Metal Ind Ltd ベルレス高炉の原料装入装置および装入方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016053201A (ja) * 2014-09-04 2016-04-14 Ｊｆｅスチール株式会社 高炉原料の装入方法
CN113167535A (zh) * 2018-11-28 2021-07-23 株式会社保罗伍斯Ihi 炉顶装置
CN113167535B (zh) * 2018-11-28 2024-01-16 株式会社保罗伍斯Ihi 炉顶装置
EP4276202A4 (fr) * 2021-02-19 2024-08-14 Jfe Steel Corp Procédé pour charger une matière première dans un haut fourneau

Also Published As

Publication number Publication date
JP5810509B2 (ja) 2015-11-11
CN102666882B (zh) 2015-03-18
JP2011132597A (ja) 2011-07-07
KR20120094945A (ko) 2012-08-27
CN102666882A (zh) 2012-09-12
KR101353166B1 (ko) 2014-01-22

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