JPH06330123A - Device and method for removing debris from blast furnace tappipe - Google Patents

Abstract

(57) [Abstract] [Purpose] A device and method for removing demolition debris from a blast furnace taphole that can be easily applied to the automation of the removal work of demolition debris of refractory and can improve the efficiency of demolition debris removal. It is provided. [Structure] A suction box 12 positioned so as to follow the bottom surface 11a of the tap gutter, and a suction box 12 opened to face the bottom surface 11a of the gutter, and a suction box 1
2 is rotatably provided, and is a scraping rotary brush 14 for scraping demolition debris toward the suction box 12, and a rotatably provided inside the opening of the suction box 12, and is dismantled into the suction box 12. A suction rotary brush 16 for introducing
It is provided with a dismantling debris collection device 24 that is connected to the suction box 12 and sucks and collects demolition debris.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method used for repairing a refractory material on the inner surface of a taphole gutter which has deteriorated due to passage of molten pig iron and slag. The present invention relates to a demolition debris removing device and method.

[0002]

2. Description of the Related Art Molten pig iron tapped from a blast furnace passes through a tap iron gutter having a length of about 20 m. Usually, the blast furnace is provided with two or more tap iron gutters. Since high-temperature molten pig iron and slag flow through this taphole, the refractory built on the inner surface of the taphole is worn or chemically deteriorated. Further, the refractory material applied to the inner surface of the taphole is significantly deteriorated even if the cooling is repeated by switching the taphole.

Therefore, repair work consisting of disassembling the refractory material whose inner surface is deteriorated and constructing and drying a new refractory material is performed on each gutter about once a month. Conventionally,
Such a series of operations have been carried out while the taphole is installed on the casting floor or once moved to a maintenance place provided in the casting floor by a lifting machine.

As shown in FIG. 6, for dismantling the refractory material, a backhoe 2 is installed above the blast furnace tap 1 and a breaker 3 is attached to the tip of a boom 2a of the backhoe 2. The crushing of the refractory 4 constructed on the inner surface of the taphole 1 is carried out. Specifically, the surface layer of the amorphous refractory which is left over or deteriorated by the operation of the operator is crushed by an average thickness of about 100 mm and a maximum of about 250 mm. Thereafter, as shown in FIG. 7, the shovel 5 is replaced at the tip of the boom 2a of the backhoe 2 to scrape the dismantled scraps, and the scraps are discharged using a bucket (not shown).

Since this dismantling work is carried out just above the tappipe, it must be carried out in a high temperature atmosphere due to its residual heat, and since it is carried out on the casting floor, the breaker 3
Vibration and noise due to the use of, and dust were generated, and the work was performed in an extremely poor environment. Furthermore, the repair work of complicated parts around the taphole is carried out while the worker enters the tappipe and is exposed to the risk of gas spouting. Moreover, in order to carry in the backhoe 2 for dismantling work, carry in and out of a series of devices such as attachment and detachment of the breaker 3 and the shovel 5, etc., it is necessary to arrange the devices according to the process and set up the devices. Further, this disassembling work is an intermittent work in which the degree of freedom in operating the equipment is high and the positioning of the tool is important, and requires skill and skill for the operation and work personnel. Therefore, such a work requires a dedicated operating staff, and it is difficult to secure the working staff.

As a mechanization technique for the above-mentioned work, for example, Japanese Patent Laid-Open Publication No. 54-132408 proposes a technique relating to "a spout repair device for a tap iron". In this device, a breaker is used to dismantle the refractory material on which the inner surface of the taphole is deteriorated, and a hose with a suction nozzle is used to suck and remove dismantled waste.

[0007]

By the way, in the conventional mechanization technology, it is not possible to set the nozzle diameter of the suction nozzle large due to the construction of the apparatus, and the disassembly waste is clogged in the suction nozzle and the hose. There was a problem that it was difficult to apply to automation. Further, since the inlet diameter of the suction nozzle is small, there is a problem that the efficiency of removing dismantled waste is not sufficient.

In view of the above-mentioned problems, an object of the present invention is to be easily applied to the automation of the work of removing the demolition debris of the refractory, and to improve the efficiency of the demolition debris removal. An apparatus and a removal method are provided.

[0009]

In order to achieve the above object, the apparatus for removing demolition debris from a blast furnace tap pipe according to the present invention is positioned so as to follow the bottom surface of the blast furnace tap pipe and faces the bottom face of the gutter. An open suction box, a rotatably provided in the vicinity of the suction box, a scraping rotary brush for scraping the demolition waste of the refractory into the suction box, and a rotatably inside the opening of the suction box. Provided, suction suction brush for introducing the demolition debris into the suction box, and connected to the suction box,
A demolition debris collecting device for sucking and collecting the demolition debris.

In the above structure, preferably, the scraping rotary brush is provided with a moving device for moving the brush in the width direction of the tapping gutter.

Preferably, the demolition debris collection device has a collection hopper for accommodating the demolition debris, a suction blower for applying a suction force to the suction box and its connection system, and the suction. It consists of a bag filter for removing demolition debris in the intake air of the blower.

Further, preferably, a compressed air jetting device for jetting compressed air is blown out in the vicinity of the suction box toward both inner side walls of the tapping gutter to blow down the powdery dust adhering to and deposited on the part. It is what has been.

Preferably, the suction box and its connecting system are provided with an elevating device for moving them up and down.

Preferably, the upper open portion of the taphole is covered with a hood, and the hood is connected to an environmental dust collector.

Further, preferably, the above-mentioned tapping gutter is movably mounted on the gutter mounting carriage along its longitudinal direction. Alternatively, the suction box, the scraping rotary brush, and the suction rotary brush are mounted on a crawler type traveling carriage so as to be able to move up and down.

On the other hand, the method for removing demolition debris from the blast furnace tappipe according to the present invention is carried out by placing the blast furnace tappipe on the gutter mounting carriage,
Alternatively, a suction means is mounted on the track type traveling cart, the suction means for dismantling debris is located in the taphole gutter, and the suction means is moved in the vertical direction by the elevating means so that the suction port is copied to the inner surface of the taphole gutter. In addition, while moving the tapping gutter in the longitudinal direction with the gutter mounting trolley or moving the track type traveling trolley, the scraps of the refractory collected by the suction means are discharged to the outside of the tapping gutter. It is something that is done.

[0017]

According to the construction of the demolition debris removing device for the blast furnace tap pipe, the suction box is positioned so as to follow the bottom surface of the blast furnace tap pipe, and is opened so as to face this gutter bottom face. A scraping rotary brush is rotatably provided near the suction box. Further, a suction rotary brush is rotatably provided in the opening of the suction box. And
A demolition debris collection device is connected to the suction box. That is, in the removal work by the demolition debris removing device, first, the scraping rotary brush scoops the scraps of the refractory material scattered on the bottom surface of the tapping gutter to the opening of the suction box. At this time, if the scraping rotary brush is provided with a moving device for moving the scraping brush in the width direction of the tapping gutter, the demolition debris can be scraped according to the bottom width of the tapping gutter. Next, the scraped scraps that have been scraped are given an initial speed by a suction rotary brush provided in the opening of the suction box and are sent into the connection system. Then, the demolition debris introduced into the connection system is transferred to the demolition debris collecting device and discharged to the outside of the tapping gutter.

This demolition debris collection device comprises a collection hopper, a suction blower and a bag filter, and the suction blower gives a suction force to the suction box and its connection system. Further, among the demolition debris transferred to the demolition debris collection device, demolition debris having a relatively large diameter is stored in the collection hopper.
In addition, small particles of the debris are collected by the bag filter from the intake air thereof after passing through the suction blower.

If a compressed air ejecting device is provided near the suction box, the compressed air is ejected from the compressed air ejecting device toward both inner side walls of the tapping gutter so that the inner wall can be prevented. Small pieces of dismantled debris adhering to the bottom and bottom will be cleaned. The debris that has fallen to the bottom of the gutter is scraped into the suction box by the scraping rotary brush as described above.

Further, by covering the upper opening of the taphole with a hood, even if the compressed air jetting device is used, small-sized demolition debris can be scattered in the hood, and the hood can be scattered. It does not scatter outside. Since the hood is connected to the environmental dust collector, the small particles scattered in the hood are collected in the bag filter through the suction blower.

If the suction box and its connecting system are provided with an elevating device, the elevating device moves the suction box and its connecting system up and down, so that the suction box is placed at a constant distance from the bottom surface of the tappipe. Alternatively, it can be easily positioned so as to maintain a constant pressing force on the bottom surface.

Further, when the above-mentioned tapping gutter is placed on the gutter loading carriage, the tapping gutter can move the tapping gutter along its longitudinal direction, so that the demolition waste can be removed. It is easy and efficient. Alternatively, instead of this, if the suction box, the scraping rotary brush, and the suction rotary brush are mounted on a track-type traveling carriage so as to be able to move up and down,
By moving the crawler type traveling carriage, the dismantling debris removal work can be performed easily and efficiently.

On the other hand, according to the structure of the method for removing the demolition debris from the blast furnace tappipe, the blast furnace tappipe is placed on the gutter mounting carriage, or the crawler type traveling carriage is equipped with suction means. That is, suction means for dismantling debris is located in the tap pipe and the tapping gutter side is moved with respect to the suction means, or the suction means side is moved with respect to the tapping gutter. Next, the suction means is moved up and down by the elevating means to make the suction port follow the inner surface of the tap pipe. That is, the suction means is moved up and down by the elevating means, and the suction port is positioned such that the suction port is maintained at a constant distance from the bottom surface of the tap gutter or a constant pressing force against the bottom surface of the gutter. Then, while the tapping gutter is moved in its longitudinal direction by the gutter mounting trolley, or while the suction means is moved by the crawler type traveling trolley, the demolition debris is collected by the suction means. The debris collected by this suction means is discharged to the outside of the tap gutter.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a demolition debris removing method and a removing method for a blast furnace tap gutter according to the present invention will be described in detail below with reference to the accompanying drawings. 1 to 3 show a first embodiment of a device for removing demolition debris from a blast furnace tap gutter according to the present invention. As shown in the figure, the demolition debris removing device 10 of the present embodiment is provided with a suction box 12 which is positioned so as to follow the bottom surface 11a of the blast furnace tap gutter 11 and which is open facing the gutter bottom surface 11a. Has been. The suction box 12 has a hollow rectangular parallelepiped shape, and the entire bottom surface thereof is open. In the opening of the suction box 12, a suction port 12a having an opening area sufficient for passing large-sized demolition debris is formed. The length of the suction box 12 in the gutter width direction is set smaller than the width of the gutter bottom surface 11a. A pair of traveling pulleys 13 are provided on the front and rear sides of the suction box 12, respectively.

A pair of scraping rotary brushes 14 are rotatably provided near the suction box 12.
Specifically, the scraping rotary brushes 14 are located in front of the suction box 12 on both sides of the suction box 12 in the forward direction F of the dismantling debris removing apparatus 10 of the present embodiment, and a driving device 14c such as a motor. It is designed to be driven by rotation. The scraping rotary brush 14 is formed by a so-called cup brush or the like, and the rotary shaft thereof is the gutter bottom surface 1
It is provided substantially perpendicular to 1a. The scraping rotary brush 14a located on the right side in the traveling direction F rotates counterclockwise, and the scraping rotary brush 14b located on the left side rotates clockwise. By rotating in opposite directions, the scraps of the refractory material are scraped to the suction box 12. Further, the scraping rotary brushes 14 are respectively provided with moving devices 15, and the scraping rotary brushes 14 are movable by the moving devices 15 in the gutter width direction. As shown in FIG. 2, these moving devices 15 bend and extend the cylinder arm 15a to rotate the scraping rotary brush 14, thereby making the axial distance of the scraping rotary brush 14 variable. That is, the axial distance between the pair of scraping rotary brushes 14 is variable according to the width of the gutter bottom surface 11a.

Further, a suction rotary brush 16 is provided behind the opening of the suction box 12. The suction rotary brush 16 includes a drive device 16a such as a motor.
It is designed to be driven to rotate by. In particular,
The suction rotary brush 16 is formed by a so-called roller brush or the like, and the rotation axis thereof is the gutter bottom surface 11a.
It is provided so as to be substantially parallel to and perpendicular to the traveling direction F. Also, this suction rotary brush 16
In FIG. 3, it is adapted to rotate counterclockwise. That is, the suction rotary brush 14 is located in front of the suction port 12a of the suction box 12, and the suction rotary brush 16 is located in the rear of the suction box 12a. Therefore,
The debris scraped up to the suction box 12 by the scraping rotary brush 14 is sent into the suction port 12a by the suction rotary brush 16.

A compressed air ejecting device 17 for ejecting compressed air toward both inner side walls 11b of the tap pipe 11 is provided near the suction box 12. Specifically, as shown in FIG. 1, this compressed air ejection device 17
Is a gate-shaped ejection pipe 1 in which a plurality of ejection ports 18a are opened.
8, the branch pipes 18c and 18d are provided in front of the scraping rotary brush 14 so as to hang down. The spouts 18a of the branch pipes 18c and 18d are opened toward the inner side wall 11b of the tap pipe 11 and are opened at intervals of about 200 to 300 mm. Then, the main pipe 18e of the jet pipe 18
Is connected to a compressor (not shown) via a valve 19.

Further, the suction port 12a of the suction box 12 is connected to a suction pipe 20 having an inner diameter sufficient to pass large-sized demolition debris. The suction pipe 20 extends upward and then extends to one side in the gutter width direction. The extended end of the suction pipe 20 is connected to a demolition debris collection device 24, and a flexible hose 22 and a check valve 23 are provided in the middle thereof. The demolition waste collecting device 24
Is a collection hopper 25 for accommodating demolition debris, a suction blower (not shown) for applying a suction force to the suction box 12 and the suction pipe 20 connected to the suction box 12, and the suction blower of the suction blower. It consists of a bag filter (not shown) for removing demolition debris during intake. Collection hopper 25 above
Has a shape in which the lower part of the hollow drum is formed in a funnel shape, and is fixed on the frame 26. A discharge valve 25a is provided in the lower portion of the collection hopper 25, and a discharge port 25b thereof is located immediately above a belt conveyor 28 covered with a hood 27. The suction blower is provided at the extended end of an exhaust pipe 29 connected to the upper portion of the collection hopper 25, and the bag filter is provided on the exhaust side of the suction blower.

Further, as shown in FIG. 3, the suction box 1
2 and the suction tube 20 connected thereto are fixed to the frame body 30. The frame 30 has a lifting device 3 for moving the suction box 12 and the suction tube 20 up and down together with the frame 30.
1 is connected. The elevating device 31 is formed of, for example, a cylinder device 32, and the cylinder device 32 hangs down from the upper end portion of a support column 21 provided upright in the vicinity of the suction box 12 and the suction pipe 20. . That is, the base of the cylinder 32a of the cylinder device 32 is fixed to the upper end of the support column 21, and the tip of the piston rod 32b is connected to the upper portion of the frame 30. Therefore, by retracting the piston rod 32b into the cylinder 32a of the cylinder device 32, the suction box 12 and the suction pipe 20 move upward together with the frame 30. On the other hand, by advancing the piston rod 32b from the inside of the cylinder 32a, the frame 30
At the same time, the suction box 12 and the suction pipe 20 are moved downward.

The upper open part of the taphole gutter 11 is
It is covered by the hood 33. This hood 33 is
The suction pipe 20 and the like connected to the suction box 12 cover the upper open portion of the tap pipe 11 so as to penetrate therethrough. An intake pipe 34 is connected to the hood 33, and the intake pipe 34 is formed as a branch pipe of the exhaust pipe 29. That is, the hood 33 is the branch pipe 34.
Also, it is connected to the suction blower of the environmental dust collector through the main pipe 29.

Further, as shown in FIG.
Is placed on the gutter mounting trolley 35, and the gutter mounting trolley 3
The rail 5 is adapted to travel on the rail 36 along the longitudinal direction of the tap pipe 11.

Next, the operation of the first embodiment will be described while explaining the method for removing demolition debris from the blast furnace tap pipe according to the present invention. Device 10 for removing demolition debris from the blast furnace tappipe according to the present embodiment
In the method of removing dismantling debris performed by using, first, while moving and placing the tapping gutter 11 on the gutter mounting carriage 35,
The suction box 12, the suction pipe 20, the scraping rotary brush 14, the suction rotary brush 16 and other suction means for dismantling debris are located in the tap pipe 11. Next, the suction device is moved in the vertical direction by the cylinder device 32 as the elevating device to adjust the position. Specifically, by advancing and retracting the piston rod 32b in the cylinder 32a of the cylinder device 32, the suction box 12 and the suction tube 2 together with the frame body 30 are moved.
Move 0 up and down. At this time, the scraping rotary brush 14 and the suction rotary brush 1 provided in the suction box 12 are
6th grade will also move up and down. By this position adjustment,
The suction port 12a of the suction box 12 follows the bottom surface of the tap pipe 11. Since the suction box 12 and the suction tube 20 are moved up and down by the cylinder device 32 in this manner, the suction box 12 can be easily positioned so as to maintain a constant distance from the gutter bottom surface 11a or a constant pressing force on the bottom surface 11a. . Then, while the tap gutter 11 is moved in the direction opposite to the traveling direction F by the gutter mounting carriage 35, the scraps of the refractory are collected by the suction means.

That is, a pair of scraping rotary brushes 14 provided at the front portions on both sides of the suction box 12 are used to draw the tapping gutter 11
The scraps of the refractory material scattered on the bottom surface 11a of the above are squeezed into the opening of the suction box 12 so as to fit within the width thereof.
Specifically, as described above, the scraping rotary brush 14a located on the right side in the traveling direction F is rotated counterclockwise, and the scraping rotary brush 14 located on the left side is rotated.
By rotating b in the clockwise direction, demolition debris is scraped up to the suction box 12. At this time, the arm 15a of the moving device 15 is bent and stretched to rotate the scraping rotary brushes 14, thereby adjusting the axial intervals of the scraping rotary brushes 14 so as to correspond to the bottom width of the tap pipe 11. You can scrape demolition debris. Therefore, since the demolition debris in a sprinkling state with the full gutter width can be efficiently collected within the opening width of the suction box 12, a mechanism for moving the suction box 12 itself in the width direction is unnecessary, and a time loss for that is required. There is no.

Next, the scraps scraped up to the opening of the suction box 12 are given an initial velocity by the rotation of the suction rotary brush 16 provided in the opening, and the suction pipe which is a connection system thereof. It is sent into 20. And
The demolition debris introduced into the suction pipe 20 is sucked and transferred in the suction pipe 20 by the suction blower of the environmental dust collector, and is discharged to the outside of the tap pipe 11. As described above, since the initial speed is effectively given to the dismantled scraps by the suction rotary brush 16, even the dismantled scraps having a relatively large diameter can be removed as compared with the general vacuum method, and the suction efficiency can be improved. . Also, since the suction wind speed (60 m / sec) is effectively used due to the effect of adding the initial velocity,
The specifications of the suction blower can be made compact, and the running cost can be kept low compared to the general vacuum system. Further, the suction rotary brush 16
In addition to the initial velocity effect on demolition debris by the wind speed (50 m / s
ec or more) and a diameter (150 mm or more) are designed to maintain an appropriate solid-gas ratio and to perform stable automatic suction without concern about clogging of the suction port 12a and the suction tube 20. Is.

Among the demolition debris transferred to the demolition debris collecting device 24 by the suction pipe 20, the demolition debris having a relatively large diameter is bent by the exhaust pipe 29 connected to the upper part of the collection hopper 25. And falls into the collecting hopper 25. The debris collected in the collection hopper 25 is
By opening the discharge valve 25a provided at the lower portion, the discharge valve 25a is placed on the belt conveyor 28 through the discharge port 25b and transferred to a predetermined place. On the other hand, small particles of the demolition waste pass through the exhaust pipe 29, pass through the suction blower provided at the extension end thereof, and are collected by the bag filter from the intake.

Further, the apparatus 10 for removing demolition debris from the blast furnace tappipe according to the present embodiment is provided with a compressed air jetting device 17 comprising a gate-shaped jetting pipe 18 having a plurality of jetting ports 18a opened. The branch pipes 18c and 18d are respectively hung in front of the scraping rotary brush 14. Therefore, the tap gutter 1 is discharged from the spout 18a of each branch pipe 18c, 18d.
By ejecting the compressed air toward both the inner side walls 11b of No. 1, it is possible to clean the small-sized demolition debris attached to the inner side walls 11b and the bottom surface 11a. The debris that has fallen on the gutter bottom surface 11a is scraped into the suction box 12 by the scraping rotary brush 14 as described above.

Further, the upper open part of the tapping gutter 11 is
It is covered by the hood 20. Therefore, the small-sized demolition debris scattered by using the compressed air jetting device 17 is scattered inside the hood 20 and can be prevented from scattering outside the hood 20. Since the hood 20 is connected to the suction blower of the environmental dust collector via the branch pipe 34 and the main pipe 29, the small particles scattered in the hood 20 are collected in the environmental dust collector. is there. Therefore, it is possible to efficiently discharge the small-sized demolition waste without deteriorating the environment.

As described above, in the present embodiment, since the demolition debris removal work is carried out while placing and moving the tapping gutter 11 on the gutter loading carriage 35, the removal work is easy and efficient. Is what you can do. In addition, it is possible to operate in semi-automated work of the monitoring subject without requiring the worker to have any experience, and it is possible to reduce the work staff, and moreover, it is possible to easily secure the work staff. Further, the operation of the demolition debris removing device 10 of the blast furnace tappipe according to the present embodiment can be performed only by setting the initial conditions, and can be performed in a relatively comfortable environment apart from the top of the tappipe 11. Further, since the dismantling debris can be removed efficiently and stably, the working time can be shortened. The suction gas exhausted from the suction blower discharge side can be connected to the existing dust collector piping to collect it, and if configured in this way, the investment amount can be reduced and the environment can be improved. Can be maintained at When the horizontal portion of the suction tube 20 and the horizontal portion of the flexible hose 22 has a long horizontal portion, a belt conveyor may be installed inside and the mechanical transportation means may be used together.

FIG. 5 shows a second embodiment of the apparatus for removing demolition debris from a blast furnace tappipe according to the present invention. As shown in the figure, the device 40 for removing demolition debris from the blast furnace tap gutter of the second embodiment is a track type traveling carriage 4 such as a backhoe.
The suction box 12, the scraping rotary brush 14, the suction rotary brush 16, the compressed air jetting device 17, and the like are mounted on the tip of the boom 41a of No. 1 so as to be vertically movable.

In the method of removing dismantling debris by using the demolition debris removing device 40 of the blast furnace tappipe according to the present embodiment, first, the crawler type traveling carriage 41 is provided with the suction box 12, the suction pipe 20, and the scraping rotation. A suction means such as the brush 14 and the suction rotary brush 16 is mounted and these are positioned inside the tap pipe 11. Next, the suction means 12 is positioned in the tappipe 11 by the boom 41a, and the suction means 12a of the suction box 12 is moved by moving the suction means up and down by the cylinder device 32 as an elevating means. Is made to follow the bottom surface 11a of the tap iron gutter 11. Then, the above-mentioned track type traveling carriage 37
While moving, the demolition debris collected by the suction means is discharged to the outside of the tapping gutter 11. The dismantled scraps thus sucked are collected by the dismantled scrap collecting device 24 through the suction pipe 20.

The second embodiment has basically the same operational effect as the first embodiment, but particularly in the second embodiment, by moving the track type traveling carriage 41. ,
It is possible to perform the operation in a small turn, and the dismantling debris removal work can be performed easily and efficiently as compared with the first embodiment. Further, since it is attached to the tip of the boom 41a of the crawler type traveling carriage 41, it can be used also as a disassembling mechanism such as a breaker, and the device becomes compact as a whole, and
The manufacturing cost can be reduced.

[0042]

As described above, according to the apparatus and method for removing demolition debris of blast furnace tap gutter according to the present invention, it is easy to apply to the automation of the demolition debris removal work of refractory materials, and it is wide at a time. Since the debris in the area can be removed, the excellent effect that the demolition debris removal efficiency can be dramatically improved is exhibited.

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of a demolition debris removing device for a blast furnace tappipe according to the present invention.

FIG. 2 is a plan view showing an apparatus for removing demolition debris from a blast furnace tappipe according to the present embodiment.

FIG. 3 is a side view showing a device for removing demolition debris from a blast furnace tappipe according to the present embodiment.

FIG. 4 is a front view showing a state in which a tappipe is placed on a gutter placement carriage in the present embodiment.

FIG. 5 is a side view showing a second embodiment of the apparatus for removing demolition debris from a blast furnace tappipe according to the present invention.

FIG. 6 is an explanatory view showing a state in which the refractory on the inner surface of the taphole gutter is crushed by a breaker in the dismantling work of the conventional blast furnace tappipe.

FIG. 7 is an explanatory diagram showing a state in which scraps of refractories are dismantled by a shovel in dismantling work of a conventional blast furnace tappipe.

[Explanation of symbols]

 11 tap iron gutter 11a bottom surface of tap iron gutter 12 suction box 14 scraping rotary brush 16 suction rotary brush 24 demolition debris collection device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takayuki Uchida 20-1 Shintomi, Futtsu City, Chiba Shin Nippon Steel Co., Ltd. Central Research Division

Claims (10)

[Claims] 1. A suction box, which is positioned so as to follow the bottom surface of the blast furnace tap gutter, is opened to face the bottom surface of the gutter, and is rotatably provided in the vicinity of the suction box, and a refractory material is provided to the suction box. A scraping rotary brush for scraping dismantling debris, and a suction rotary brush rotatably provided in the opening of the suction box for introducing the dismantling scrap into the suction box, and the suction box. An apparatus for removing demolition debris from a blast furnace tap pipe, comprising: a demolition debris collection device that is connected to the demolition debris collection device for sucking and collecting the demolition debris. 2. The apparatus for removing demolition debris from a blast furnace tap pipe according to claim 1, wherein the scraping rotary brush is provided with a moving device for moving the scraping brush in the width direction of the tap pipe. 3. The demolition debris collection device comprises a collection hopper for accommodating demolition debris, a suction blower for applying a suction force to the suction box and its connection system, and an intake of the suction blower. The device for removing demolition debris of a blast furnace tap pipe according to claim 1 or 2, comprising a bag filter for removing demolition debris therein. 4. A compressed air jetting device for jetting compressed air toward both inner sidewalls of the tap pipe, in the vicinity of the suction box, according to any one of claims 1 to 3. The demolition debris removal device of the blast furnace tap gutter described in. 5. The blast furnace tappipe demolition debris according to claim 1, wherein the suction box and its connection system are provided with an elevating device for moving them up and down. Removal device. 6. The blast furnace tapped metal according to claim 1, wherein an upper open portion of the tap pipe is covered with a hood, and the hood is connected to an environmental dust collector. Equipment for removing gutter demolition debris. 7. The blast furnace tappipe according to any one of claims 1 to 6, wherein the tappipe is movably mounted on a trough placement carriage along a longitudinal direction thereof. Demolition debris removal device. 8. The blast furnace tappipe according to any one of claims 1 to 6, wherein the suction box, the scraping rotary brush, and the suction rotary brush are mounted on a track-type traveling carriage so as to be able to move up and down. Demolition debris removal device. 9. A blast furnace tapping gutter is placed on a gutter mounting carriage, a suction means for dismantling debris is positioned in the tapping gutter, and the lifting means moves the suction means in the vertical direction. The suction port is made to follow the inner surface of the tapping gutter so that the refractory debris collected by the suction means can be discharged to the outside of the tapping gutter while the tapping gutter is moved in the longitudinal direction by the gutter mounting carriage. A method for removing demolition debris from a blast furnace tappipe, which is characterized by the above. 10. A crawler-type traveling trolley is provided with suction means, and these are located in a taphole gutter, and the suction means is moved up and down by an elevating means so that its suction port is copied to the inside of the taphole gutter. In addition, the method for removing the demolition debris of the blast furnace tap iron gutter, characterized in that the refractory debris collected by the suction means is discharged to the outside of the tap iron while moving the track type traveling carriage. .