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KR900004008B1 - Device for distribution of blast furnace discharge - Google Patents

Device for distribution of blast furnace discharge Download PDF

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Publication number
KR900004008B1
KR900004008B1 KR1019860006591A KR860006591A KR900004008B1 KR 900004008 B1 KR900004008 B1 KR 900004008B1 KR 1019860006591 A KR1019860006591 A KR 1019860006591A KR 860006591 A KR860006591 A KR 860006591A KR 900004008 B1 KR900004008 B1 KR 900004008B1
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South Korea
Prior art keywords
blast furnace
cone
rotary chute
chute
rotary
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KR1019860006591A
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Korean (ko)
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KR880003013A (en
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양은우
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포항종합제철 주식회사
안병화
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    • 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
    • C21B7/205—Details concerning the gear-box driving the charge distribution system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G11/00—Chutes
    • B65G11/12—Chutes pivotable
    • B65G11/126—Chutes pivotable for bulk
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/008—Composition or distribution of the charge
    • 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 specially adapted for 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
    • F27D2003/0001—Positioning the charge
    • F27D2003/0002—Positioning the charge involving positioning devices, e.g. buffers, buffer zones

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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)

Abstract

내용 없음.No content.

Description

고로장입물 분배장치Blast Furnace Load Distribution Device

제 1 도는 종래의 고로장입물 분배장치의 사용상태를 나타내는 사용상태 단면도.1 is a cross-sectional view showing a use state of a conventional blast furnace charge distribution device.

제 2 도는 본 발명에 부합되는 고로장입물 분배장치의 사용상태를 나타내는 사용상태 단면도.Figure 2 is a cross-sectional view showing the state of use of the blast furnace charge distribution device in accordance with the present invention.

제 3 도는 본 발명의 요부단면도.3 is a cross-sectional view of main parts of the present invention.

제 4 도는 본 발명의 큰 이동에 따른 고로내 장입물 낙하변동을 나타내는 참고도.4 is a reference diagram showing the blast furnace charge drop change according to the large movement of the present invention.

제 5 도는 제 3 도의 A-A선을 따르는 단면도.5 is a cross-sectional view taken along the line A-A of FIG.

제 6 도는 고로장입물 낙하원리도.6 is a blast furnace loading drop principle.

본 발명은 고로장입물의 분배장치에 관한 것으로, 특히 벨레스 타입(Bell-less Type)고로의 장입물 분배장치에 관한 것이다.The present invention relates to a distribution device for blast furnace charges, and more particularly, to a charge distribution device for a bellless type blast furnace.

고로로황(爐況) 및 로체(爐體)관리에서 가장 중요한 요소중의 하나가 로내(爐內)가스흐름의 제어이며 이는 장입물의 분배상태에 따라 많은 영향을 받는다.One of the most important factors in blast furnace sulfur and furnace management is the control of furnace gas flow, which is affected by the distribution of charges.

고로내부의 가스흐름을 조절하기 위하여 장입물을 고로내부의 임의위치에 분배하는 고로장입물 분배장치의 일례가 국내 특허공보 제 88-46 호에 제시되어 있다.An example of a blast furnace load distribution device for distributing a charge to an arbitrary position in the blast furnace to control the gas flow in the blast furnace is presented in Korean Patent Publication No. 88-46.

상기 국내 특허공보 제 88-46 호에 제시된 고로장입물 분배장치는 본 발명자가 발명한 것으로서, 제 1 도에 나타난 바와같이, 원료호퍼(Hopper)(2)직하부에 수직회전슈우트(Chute)(3)를 설치하되 회전슈우트(3)내에는 몇개의 칸막이(6)로 고정된 콘(5)을 내설하여 슈우트(3)와 일체물로 회전되게 하였으며, 회전슈우트(3)를 회전시키기 위하여 회전기어(10)를 회전슈우트(3)에 끼워맞춤하였고, 상부에는 하중의 방향이 회전슈우트(3)에 수직인 경우에 사용되는 베어링(11)을 설치하고, 하부에는 하중의 방향이 슈우트(3)에 평행인 경우에 사용되는 베어링(11a)을 설치하였으며, 또한 속도조절모우터(Motor)(12)를 노체(13)에 수직으로 고정시키고 회전기어(10)와 맞물려 회전할 수 있도록 구동기어(14)를 설치하여 구성된다.The blast furnace loading distribution device presented in the domestic patent publication No. 88-46 is invented by the present inventors, and as shown in FIG. 1, a vertical rotary chute (Chute) directly under the raw material hopper (2). (3) was installed, but inside the rotating chute (3), the cone (5) fixed by a number of partitions (6) was installed to be rotated integrally with the chute (3), the rotating chute (3) The rotary gear 10 was fitted to the rotary chute 3 for rotation, and at the upper part, a bearing 11 used when the direction of the load was perpendicular to the rotary chute 3 was installed. The bearing 11a used in the case where the direction of the shaft is parallel to the chute 3 is installed, and the speed adjusting motor 12 is fixed perpendicularly to the furnace body 13, and the rotary gear 10 and It is configured by installing a drive gear 14 so as to rotate in engagement.

그러나, 상기 고로장입물 분배장치는 회전슈우트(3)와 콘(5)사이를 다수의 칸막이(6)로 고정하므로서 회전슈우트의 동일 회전상태하에서는 장입물(1)의 량 및 장입물(1)의 낙하폭이 일정하여 로내가스의 흐름을 보다 적절히 조절할 수 없는 단점이 있었다.However, the blast furnace load distribution device is fixed between the rotary chute (3) and the cone (5) by a plurality of partitions (6) under the same rotational state of the rotary chute and the amount of the charge (1) There was a disadvantage that the fall width of 1) could not be adjusted more appropriately the flow of furnace gas.

따라서, 본 발명은 상기 국내 특허공보 제 88-46 호의 고로장입물 분배장치를 개량한 것으로서, 회전슈우트의 회전속도를 조절함에 의해 고로장입물의 낙하각도를 제어함과 동시에 상기 회전슈우트내에서의 콘의 상,하 운동에 의해 고로장입물의 양 및 장입물의 분배폭을 제어하여 회전슈우트의 동일 회전상태하에서도 고로내의 가스흐름을 보다 적절하게 조절할 수 있는 고로장입물 분배장치를 제공하고자 하는데 그 목적이 있다.Therefore, the present invention is an improvement of the blast furnace load distribution device of the domestic patent publication No. 88-46, by controlling the rotational speed of the rotary chute while controlling the fall angle of the blast furnace load in the rotary chute By controlling the blast furnace load and the distribution width of the load by the up and down movement of the cone of the cone to provide a blast furnace load distribution device that can more appropriately control the gas flow in the blast furnace even under the same rotation state of the rotary chute The purpose is.

이하, 본 발명을 설명한다.Hereinafter, the present invention will be described.

본 발명은, 원료호퍼하부에 회전가능하게 설치되는 회전슈우트와, 다수의 칸막이를 구비하여 상기 회전슈우트내부에 위치되는, 콘을 포함하여 구성되는 고로장입물 분배장치 있어서, 상기 회전슈우트의 내면에는 상기 다수의 칸막이의 상,하 운동을 안내하기 위한 다수의 안내홈이 형성되고 ; 상기 콘의 상부면은 상기 회전슈우트를 관통하여 상부방향으로 신장되는 연결봉의 한쪽 단부와 일체로 연결되고 ; 상기 연결봉의 다른쪽 단부는 회전슈우트의 회전시 연결봉도 함께 회전되도록 연결박스에 결합되고 ; 그리고 상기 연결박스는 상기 콘의 상,하 운동을 부여하는 실린더와 결합되고 ; 회전슈우트의 회전속도를 조절함에 의하여 고로장입물의 낙하각도를 제어함과 동시에 콘의 상,하 운동에 의해 고로장입물의 양 및 장입물의 분배폭을 제어하도록 구성되는 고로장입물 분배장치에 관한 것으로서, 이를 도면에 의해 보다 상세히 설명하면 다음과 같다.The present invention relates to a blast furnace loading distribution device comprising a rotary chute rotatably installed under a raw material hopper and a cone having a plurality of partitions and positioned inside the rotary chute. The inner surface of the plurality of guide grooves for guiding the up and down movement of the partition is formed; The upper surface of the cone is integrally connected with one end of the connecting rod extending through the rotary chute in an upward direction; The other end of the connecting rod is coupled to the connecting box so that the connecting rod also rotates when the rotating chute rotates; And the connection box is coupled to the cylinder to give the up, down motion of the cone; The present invention relates to a blast furnace load distribution device configured to control the drop angle of the blast furnace load by controlling the rotation speed of the rotating chute and to control the amount of blast furnace load and the distribution width of the load by the up and down motion of the cone. This will be described in more detail with reference to the accompanying drawings.

제 2 도에 나타난 바와같이, 본 발명의 고로장입물 분배장치는 크게, 원료호퍼(2)하부에 회전가능하게 설치되는 회전슈우트(3), 일체로 형성되는 다수의 칸막이(6)를 구비하여 상기 회전슈우트(3)내부에 위치되는 콘(5) 및 상기 콘(5)의 상,하 운동을 부여하는 실린더(4)를 포함한다.As shown in FIG. 2, the blast furnace charge distribution device of the present invention is largely provided with a rotary chute 3 rotatably installed under the raw material hopper 2, and a plurality of partitions 6 integrally formed. Cone 5 and the cylinder (4) for giving the up and down movement of the cone (5) located inside the rotary chute (3).

제 3 도 및 제 5 도에 나타난 바와같이, 원료호퍼(2)하부에 회전가능하게 설치되는 상기 회전슈우트(3)의 내면에는 상기 콘(5)에 일체로 형성된 칸막이(6)의 수에 대응하는 수만큼의 안내홈(7)이 형성되어 있다. 상기 안내홈(7)은 콘(5)의 상,하 운동시 칸막이(6)의 이동을 적절히 안내하도록 칸막이(6)의 형상에 대응하여다양한 형태로 형성될 수 있다.As shown in FIGS. 3 and 5, the inner surface of the rotary chute 3 rotatably installed under the raw material hopper 2 has a number of partitions 6 formed integrally with the cone 5. A corresponding number of guide grooves 7 are formed. The guide groove 7 may be formed in various shapes corresponding to the shape of the partition 6 so as to properly guide the movement of the partition 6 during the up and down movement of the cone 5.

또한, 상기 회전슈우트(3)내에 위치되는 상기 콘(5)의 그 상부면은 상기 회전슈우트(3)를 관통하여 상부방향으로 신장되는 연결봉(15)의 한쪽 단부와 일체로 연결되어 있다.In addition, the upper surface of the cone 5 located in the rotary chute 3 is integrally connected with one end of the connecting rod 15 extending upward through the rotary chute 3. .

상기 연결봉(15)의 다른쪽 단부는 상기 회전슈우트(3) 회전시 연결봉(15)도 함께 회전되도록 연결박스(8)에 결합되어 있으며, 이 연결박스(8)에는 상기 콘(5)의 원활한 회전을 위하여 베어링(9)이 삽입되는 것이 바람직하다.The other end of the connecting rod 15 is coupled to the connecting box 8 so that the connecting rod 15 also rotates when the rotary chute 3 rotates. The connecting box 8 includes the cone 5 of the cone 5. It is preferable that the bearing 9 be inserted for smooth rotation.

또한, 상기 연결박스(8)는 그 상부에 위치되는 통상의 실린더(4)에 결합되어 있으며, 이 실린더(4)작동에 의해 상기 콘(5)은 상기 회전슈우트(3)내에서 상,하 운동을 하게된다.In addition, the connection box 8 is coupled to a normal cylinder (4) located on the upper portion, by the operation of the cylinder (4) the cone (5) in the rotary chute (3) Ha exercise.

한편, 상기 회전슈우트(3)에는 회전기어(10)가 끼워맞춤되어 있고, 이 회전기어(10)는 노체(3)에 설치된 속도가변모터(12)에 구동가능하게 결합되는 구동기어(14)와 맞물려 있으며, 속도가변모터(12)의 작동에 의해 구동기어(14)가 구동되는 경우 상기 회전기어(10)가 구동기어(14)와 맞물려 회전하므로서 상기 회전슈우트(3)는 회전하게 된다.On the other hand, the rotary gear 10 is fitted to the rotary gear 10, the rotary gear 10 is a drive gear 14 is operatively coupled to the speed variable motor 12 installed in the furnace body (3). The rotary gear 3 rotates while the rotary gear 10 is engaged with the driving gear 14 when the driving gear 14 is driven by the operation of the variable speed motor 12. do.

또한, 상기 회전슈우트(3)의 상부에는 하중의 방향이 회전슈우트(3)에 수직인 경우에 사용되는 베어링(11)을 설치하고, 그 하부에는 하중의 방향이 회전슈우트(3)에 평형인 경우에 사용되는 베어링(11a)을 설치하는 것이 바람직하다.In addition, an upper portion of the rotary chute 3 is provided with a bearing 11 used when the direction of the load is perpendicular to the rotary chute 3, and the lower direction of the load is the rotary chute 3 It is preferable to install the bearing 11a used in the case of equilibrium in the.

이와같이 구성된 본 발명의 작용효과를 설명하면 다음과 같다.Referring to the effects of the present invention configured as described above are as follows.

호퍼(2)내의 장입물(1)을 적절히 회전슈우트(3)내로 낙하시키며 속도가변모터(12)를 구동시키면 구동기어(14)와 회전기어(10)가 맞물려 회전되므로 회전슈우트(3)가 회전되고 동시에 회전슈우트(3)의 안내홈(7)에 삽입되어진 칸막이(6)와 일체로된 콘(5)도 연결박스(8)에 의해 실린더(4)에 연결된 상태로 회전슈우트(3)와 같은 속도로 회전한다.When the load 1 in the hopper 2 is properly dropped into the rotary chute 3 and the speed variable motor 12 is driven, the drive gear 14 and the rotary gear 10 are engaged with each other to rotate. Is rotated and the cone 5 integrated with the partition 6 inserted into the guide groove 7 of the rotary chute 3 is also rotated in the state connected to the cylinder 4 by the connection box 8. It rotates at the same speed as the foot 3.

이때, 회전슈우트(3)내로 낙하하는 장입물(1)은 콘(5)에 의해 회전슈우트(3) 가장자리로 몰리며 칸막이(6)에 의해 회전슈우트(3)의 회전력이 장입물(1)에 전달된다. 따라서, 회전슈우트(3)의 회전이 빠르면 회전슈우트(3)를 중심으로 장입물(1)이 멀리 낙하하고 회전이 느리면 가까운곳에 낙하한다. 그리고 동시에 콘(5)은 실린더(4)에 의한 상하운동을 하므로 회전슈우트(3)와의 간격이 조절되므로 제 4 도 에서와 같이 콘(5)과 회전슈우트(3)와의 간격변화에 따라 장입물량 및 분배폭이 조정되는데, 이를 제 6 도의 원리도에 의거 설명하면 다음과 같다.At this time, the charge 1 falling into the rotary chute 3 is driven to the edge of the rotary chute 3 by the cone 5 and the rotational force of the rotary chute 3 is divided by the partition 6 into the charge ( 1) is delivered. Therefore, if the rotation of the rotary chute 3 is fast, the charge 1 falls far away from the rotary chute 3, and if the rotation is slow, it falls to the nearest place. At the same time, since the cone 5 moves up and down by the cylinder 4, the distance between the rotary chute 3 is adjusted, and thus, according to the change in the distance between the cone 5 and the rotary chute 3 as shown in FIG. The loading quantity and distribution width are adjusted, which is explained based on the principle diagram of FIG.

회전슈우트(3)를 등속원운동시켰을때 회전슈우트(3)내 장입물(1)의 회전슈우트(3) 이탈속도(V)는 V=rw의 선속도를 얻게되며 제 6(a) 도에서와 같이 수평방향 V속도로 던진 물체와 같은 운동을 하게 된다.(저항무시)When the rotary chute 3 is subjected to the constant velocity motion, the departure speed V of the rotary chute 3 of the charge 1 in the rotary chute 3 is obtained as a linear velocity of V = rw, and the sixth (a As shown in Fig. 1, the same motion as the thrown object is made. (Ignore resistance)

즉, t초후의 속도(Vx, Vy)는In other words, the velocity (Vx, Vy) after t seconds

Vx=VVx = V

Vy=gtVy = gt

Figure kpo00001
Figure kpo00001

t초후의 위치(X,Y)는After t seconds, the position (X, Y)

Figure kpo00002
Figure kpo00002

저면의 도달거리(X)는The bottom reach (X)

Figure kpo00003
가 된다.
Figure kpo00003
Becomes

따라서 제 4 도에서So in the fourth degree

r(슈우트의 반경) : 0.5mr (the radius of the chute): 0.5 m

h(장입물의 낙하높이) : 6.5mh (dropping height of charged item): 6.5m

N(회전슈우트의 회전수) : 1.105회전/sec≒66 R.P.MN (speed of rotation chute): 1.105 revolution / sec ≒ 66 R.P.M

r1(하강전 콘의 반경) : 0.4mr 1 (radius of cone before falling): 0.4m

r2(임의의 위치로 콘이 하강된 상태에서의 콘의 반경):0.35mmr 2 (radius of the cone with the cone lowered to any position): 0.35 mm

△r(콘의 반경차 : r1-r2) = 0.05m일때△ r (radius difference of cone: r 1 -r 2 ) = 0.05m

X(고로내 장입물의 바깥쪽 낙하반경)X (outer drop radius of blast furnace load)

Figure kpo00004
Figure kpo00004

X1(하강전 콘에 의한 고로내 장입물 낙하반경)X 1 (dropping radius of blast furnace load due to pre-lowering cone)

Figure kpo00005
Figure kpo00005

X2(하강한 콘에 의한 고로내 장입물 낙하반경)X 2 (in-blast furnace drop radius due to lowered cone)

Figure kpo00006
Figure kpo00006

Figure kpo00007
Figure kpo00007

△X(고로내에 낙하된 장입물의 반경차)ΔX (radius difference of charged item dropped into blast furnace)

=X1-X2=3.2-2.8=0.4(m) 이다.= X 1 -X 2 = 3.2-2.8 = 0.4 (m)

즉, 장입물 낙하지점에서 상부콘의 반경(r1)과 하부콘의 반경(r2)의 차(r=r1-r2)가 0.05m일때, 고로내에 낙하된 장입물의 반경차(X=X1-X2)는 O.4m의 차이를 보인다.That is, when the difference (r = r 1 -r 2 ) between the radius (r 1 ) of the upper cone and the radius (r 2 ) of the lower cone at the charge dropping point is 0.05m, the radius difference (X) of the charged object dropped into the blast furnace = X 1 -X 2 ) shows a difference of 0.4m.

이와같이, 본 발명의 고로장입물 분배장치는 회전슈우트(3)상부에 고정된 실린더(4)에 의해 상하운동하는 콘(5)으로 회전슈우트(3)와의 간격을 조정하여 회전슈우트(3)의 동일 회전상태하에서 장입물량과 장입물의 분배폭을 조정할 수 있으므로, 로내(爐內)가스의 흐름을 보다 적절하게 제어할 수 있는 효과가 있는 것이다.In this way, the blast furnace loading distribution device of the present invention by adjusting the distance between the rotary chute (3) with the cone (5) which moves up and down by the cylinder (4) fixed on the rotary chute (3). Under the same rotational condition of 3), the amount of charge and the distribution width of the charge can be adjusted, so that the flow of the furnace gas can be controlled more appropriately.

Claims (1)

원료호퍼(2)하부에 회전가능하게 설치되는 회전슈우트(3)와, 다수의 칸막이(6)를 구비하여 상기 회전슈우트(3)내부에 위치되는 콘(5)을 포함하여 구성되는 고로장입물 분배장치에 있어서, 상기 회전슈우트(3)의 내면에는 상기 다수의 칸막이(6)의 상,하 운동을 안내하기 위한 다수의 안내홈(7)이 형성되고 ; 상기 콘(5)의 상부면은 상기 회전슈우트(3)를 관통하여 상부방향으로 신장되는 연결봉(15)의 한쪽 단부와 일체로연결되고 ; 상기 연결봉(15)의 다른쪽 단부는 회전슈우트(3)의 회전시 연결봉(15)도 함께 회전되도록 연결박스(8)에 결합되고 ; 그리고 상기 연결박스(8)는 상기 콘(5)의 상,하 운동을 부여하는 실린더(4)와 결합되어 ; 상기 회전슈우트(3)의 회전속도를 조절함에 의하여 고로장입물의 낙하각도를 제어함과 동시에 콘(5)의 상,하 운동에 의해 고로장입물의 양 및 장입물의 분배폭을 제어하도록 구성하는 것을 특징으로 하는 고로장입물 분배장치.Blast furnace comprising a rotary chute (3) rotatably installed under the raw material hopper (2) and a cone (5) having a plurality of partitions (6) located inside the rotary chute (3). In the charge distribution device, a plurality of guide grooves (7) for guiding the up and down movement of the plurality of partitions (6) are formed on the inner surface of the rotary chute (3); The upper surface of the cone (5) is integrally connected with one end of the connecting rod (15) extending through the rotary chute (3) in the upper direction; The other end of the connecting rod 15 is coupled to the connecting box 8 so that the connecting rod 15 also rotates when the rotating chute 3 rotates; And the connection box 8 is coupled to the cylinder (4) to give the up and down movement of the cone (5); By controlling the rotation angle of the blast furnace charge by adjusting the rotational speed of the rotary chute (3) and at the same time to control the amount of blast furnace charge and the distribution width of the charge by the up and down movement of the cone (5) Blast furnace load distribution device characterized in that.
KR1019860006591A 1986-08-11 1986-08-11 Device for distribution of blast furnace discharge Expired KR900004008B1 (en)

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Application Number Priority Date Filing Date Title
KR1019860006591A KR900004008B1 (en) 1986-08-11 1986-08-11 Device for distribution of blast furnace discharge

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KR900004008B1 true KR900004008B1 (en) 1990-06-09

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CN107120975B (en) * 2017-07-12 2022-11-15 中冶北方（大连）工程技术有限公司 Tangential rotary distributing machine for vertical cooling cylinder cooling process

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