JPH0770622A - 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. provide. [Structure] A nozzle 12 that is hung down to face a bottom surface 11a of a tap pipe 11, a nozzle opening 12a that is eccentrically opened at a lower end portion of the nozzle 12, and the nozzle opening 12a follows the gutter bottom surface 11a. Scanning means 13 for rotating the nozzle 12 forward and backward at a predetermined angle in order to perform scanning movement.
A suction collecting device 20 which is connected to the nozzle 12 and sucks and collects dismantled refuse of refractory from the nozzle opening 12a.
It has and.

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 refractories on the inner surface of a taphole gutter which has deteriorated due to passage of hot metal and slag. The present invention relates to a demolition debris removing device and method.

[0002]

2. Description of the Related Art The hot metal tapped from a blast furnace has a length of about 20.
Although it passes m m of the tap gutter, the blast furnace is usually provided with two or more tap gutters. High temperature hot metal and slag flow through this taphole, so that the refractory material installed on the inside of the tappipe 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.

For dismantling the refractory, as shown in FIG. 7, a backhoe 2 is installed above the blast furnace tap gutter 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. After that, as shown in FIG. 8, the shovel 5 is replaced at the tip of the boom 2a of the backhoe 2 to scrape 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, since the vacuum pump is used, the nozzle diameter of the suction nozzle cannot be set large due to the restriction of the suction air volume, and the suction nozzle is not able to be set. There was a problem that it was difficult to apply to automation, such as dismantling debris clogging the inside of the hose. In addition, there is a problem that the efficiency of removing dismantling debris 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-mentioned object, a device for removing demolition debris from a blast furnace tappipe according to the present invention is provided with a nozzle hung facing the bottom of the tappipe and a lower end of the nozzle. Connected to the nozzle, a nozzle opening eccentric to the opening, a scanning means for rotating the nozzle forward and backward at a predetermined angle so as to scan and move the nozzle opening so as to follow the gutter bottom surface. , And a suction collecting device composed of a suction blower with a large suction air volume for sucking and collecting demolition waste of the refractory from the nozzle opening.

In the structure of the demolition debris removing device, it is preferable that the nozzle is supported by an elevating means for moving the nozzle up and down.

Preferably, the suction collecting device is
A collection hopper for accommodating demolition debris, a suction blower for applying a suction force to the nozzle and its connection system, and a bag filter for removing demolition debris in the suction air of the suction blower Is.

Further, preferably, a notch portion is opened in the nozzle opening so as to face the front side in the direction perpendicular to the scanning direction. Alternatively, a notch portion is opened in the nozzle opening so as to face the scanning direction, and the nozzle is provided with a swiveling means around its axis so that the notch portion is always positioned forward in the scanning direction.
Alternatively, the nozzle opening is cut so that the void portion faces the scanning direction so that the void portion is located, and in order to always position this slit void portion forward in the scanning direction, the nozzle is provided with a turning means around its axis. It is equipped.

Further, preferably, the above-mentioned tapping gutter is mounted on a gutter mounting carriage so as to be movable along its longitudinal direction. Alternatively, the nozzle and the scanning means are
It is mounted on a track-type traveling cart.

On the other hand, in the method for removing demolition debris from the blast furnace tapping gutter according to the present invention, the blast furnace tapping gutter is placed on the gutter mounting carriage, and the demolition debris suction means is located in the tapping gutter. Then, the suction means is moved up and down by the elevating means so that the suction port is made to follow the inner surface of the tapping gutter, and the scanning means sucks the tapping gutter while moving the tapping gutter in the longitudinal direction. It is designed such that the scraps of refractory materials collected while scanning in the gutter width direction are discharged to the outside of the tap gutter.

Another method for removing demolition debris is to install suction means on a track-type traveling carriage, position these inside a taphole, and move the suction means up and down by means of a lifting means. The suction port is made to follow the inner surface of the tap gutter so that the scraper demolition debris collected can be discharged to the outside of the tap gutter while the track type traveling carriage is moved while the suction means is scanned in the gutter width direction by the scanning means. It is the one.

[0016]

According to the above construction of the demolition debris removing device, the nozzle is hung down so as to face the bottom surface of the tap pipe, and the nozzle opening is eccentrically opened at the lower end portion of the nozzle. Therefore, when the nozzle is rotated forward and backward by a predetermined angle by the scanning means, the nozzle port eccentrically opened at the lower end thereof is scanned and moved so as to follow the gutter bottom surface. At that time, as will be described later, by moving the tapping gutter toward this removing device, or by moving the device itself forward,
The demolition scraps of the refractory material scattered on the bottom surface of the taphole are gradually sucked into the nozzle opening and fed into the connection system.
Then, the debris introduced into the connection system is transferred to the suction collecting device and discharged to the outside of the tapping gutter.

The suction collecting device comprises a collecting hopper, a suction blower and a bag filter, and the suction blower applies a suction force to the nozzle and its connecting system. Further, of the demolition debris transferred to the suction collection device, the demolition debris having a relatively large diameter is stored in the collection hopper. In addition, small particles of the scraps are collected by the bag filter from the intake air after passing through the suction blower.

Further, if the nozzle is supported by the elevating means, the nozzle moves up and down by the elevating means.
It is easy to position the nozzle opening so as to maintain a constant distance from the bottom surface of the tappipe or a constant pressing force against the bottom surface.

Further, if a notch is opened in the nozzle opening so as to face the front side in the direction perpendicular to the scanning direction,
Since an appropriate solid-gas ratio is maintained regardless of the state of demolition debris accumulation, there is no concern of blockage, and automatic suction is performed stably. Alternatively, a notch portion is opened at the nozzle opening so as to face the scanning direction, or is cut so that a void portion is positioned so as to face the scanning direction, and the nozzle is provided with a swiveling means. Turn around that axis,
Even if the notch portion or the cut-out void portion is always located in the front in the traveling direction, the same effect is exhibited.

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, if the above-mentioned nozzles and scanning means are mounted on a crawler type traveling carriage so as to be able to move up and down, the crawler type traveling carriage can be moved to easily and efficiently remove demolition debris. .

On the other hand, according to the construction of the method for removing demolition debris from the blast furnace tappipe, the blast furnace tappipe is placed on the gutter mounting carriage, or suction means is mounted on the track-type traveling cart. 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 so that the suction port is made to follow the gutter bottom surface. That is, the suction means is moved up and down by the elevating means, and the suction port is positioned so as to be 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 the longitudinal direction by the gutter mounting carriage, or while the suction means is moved by the track type traveling carriage, the suction means is scanned by the scanning means in the gutter width direction to remove the debris. Collect. The debris collected by this suction means is discharged to the outside of the tap gutter.

[0022]

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 an embodiment of an apparatus for removing demolition debris from a blast furnace tappipe according to the present invention. As shown in the drawing, the demolition debris removing device 1 of the present embodiment
No. 0 is provided with a cylindrical nozzle 12 which is positioned so as to follow the bottom surface 11a of the blast furnace tap gutter 11 and hangs down to face the gutter bottom surface 11a. A nozzle port 12a is opened at the lower end of the nozzle 12 so as to be eccentric to the axis thereof. That is, the nozzle 12 has a hook shape as a whole, and its diameter is set to about 150 mm. Therefore, demolition debris having a particle size of about 150 mm or less passes through the nozzle 12. The distance between the axis of the nozzle 12 on the main body side and the axis of the nozzle port 12a is set to about half the inner width of the tapping gutter 11 to be applied.

As shown in FIG. 2, a scanning means 13 for rotating the nozzle 12 forward and backward at a predetermined angle is provided above the nozzle 12. As described above, since the nozzle opening 12a is provided eccentrically from the nozzle axis, the nozzle opening 12a follows the gutter bottom surface 11a when the nozzle 12 is rotated by the scanning means 13 in the forward and reverse directions. Thus, the arc-shaped orbit is scanned and moved in the gutter width direction. As the scanning means 13, for example, a rotary actuator, a crank mechanism, a slider or the like is adopted.
Specifically, the scanning means 13 is rotatably supported by a support frame 14, and the upper outer peripheral portion of the nozzle 12 is welded to the rotary shaft 13a driven by the scanning means 13 via a rib 14a. It is fixed by.

Further, an elevating means 15 for vertically moving the nozzle 12 together with the scanning means 13 is connected to an upper end portion of the support frame 14. As the elevating means 15, for example, a cylinder device is adopted. That is, the base of the cylinder 15a of the cylinder device 15 is fixed to the upper end of the frame 15c, and the tip end of the piston rod 15b is connected to the upper end of the support frame 14. Therefore, by retracting the piston rod 15b into the cylinder 15a of the cylinder device 15, the nozzle 12 and its connecting system move upward together with the scanning means 13.
On the other hand, from the inside of the cylinder 15a to the piston rod 15b
The nozzle 12 and its connecting system are moved downward together with the scanning means 13 by advancing.

Then, as shown in FIG. 4A, a notch 12b is formed in the nozzle opening 12a of the nozzle 12. When the nozzle 12 is not provided with a turning means 16 to be described later, the notch 12b is opened so as to face the front side in the direction perpendicular to the scanning direction. On the other hand, when the nozzle 12 is provided with the turning means 16, the notch 12b is opened so as to face the scanning direction. This is because the scanning direction is converted to forward and backward,
The notch portion 12b is always positioned forward in the scanning direction. That is, as shown in FIGS. 5 (a) and 5 (b), the swirling means 16 provided in the nozzle 12 swivels the nozzle 12 about its axis. The external gear 16a is provided on the outer peripheral portion of the pinion 12, a pinion gear 16b that meshes with the external gear 16a, and a drive device 16c such as a motor that rotationally drives the pinion gear 16b.

The rotary actuator or the like described above may be employed as the swivel means 16, but since the notch portion 12b is always required to be positioned forward in the scanning direction, the scanning movement of the nozzle opening 12a by the scanning means 13 is performed. Have to tune in to. Therefore, when the nozzle opening 12a is scanned and moved to the right in the gutter width direction by the scanning means 13, the notch portion 12b is moved by the swiveling means 16.
Is rotated and positioned to the right of the nozzle port 12a, which is the front side in the scanning direction. On the other hand, when the scanning means 13 scans and moves the nozzle opening 12a to the left in the gutter width direction, the swiveling means 16 swivels and positions the notch 12b to the left of the nozzle opening 12a, which is forward in the scanning direction. Is.

Further, as shown in FIG. 4 (b), the nozzle opening 12a is cut off so that the gap D, which faces the scanning direction of the nozzle 12 and is offset from the gutter bottom surface 11a, is located. You may. In this case, the nozzle 12 is provided with the turning means 16 for the same reason as described above. Therefore, in order to always position the bevel-cut gap D of the nozzle opening 12a forward by the swiveling means 16,
This is synchronized with the scanning movement of the nozzle opening 12a by the scanning means 13.

An elbow joint 17 having the same diameter as that of the nozzle 12 is connected to the upper end opening of the nozzle 12. As shown in FIGS. 1 and 6, the elbow joint 17 is connected to a suction collection device 20 via a flexible hose 18 and a check valve 19. The suction collecting device 20 includes a collecting hopper 21 for storing demolition waste,
A suction blower (not shown) for applying a suction force to the nozzle 12, the elbow joint 17 and the flexible hose 18 connected to the nozzle 12, and a bag filter for removing demolition debris in the suction air of the suction blower. (Not shown). The collecting hopper 21 has a funnel-like shape below the hollow drum, and is fixed on the frame 22. A discharge valve 21a is provided below the collecting hopper 21, and a discharge port 21b thereof is provided.
Is located directly above the belt conveyor 24 covered by the hood 23. The suction blower is provided at the extended end of an exhaust pipe 25 connected to the upper portion of the collection hopper 21, and the bag filter is provided on the exhaust side of the suction blower.

Further, the tapping trough 11 is placed on a trough mounting trolley (not shown), and the trough mounting trough 11 is placed on a running track such as a rail provided in a working space. It is adapted to travel along the longitudinal direction of.

Next, the operation of the first embodiment will be described while explaining the method for removing demolition debris from the blast furnace tappipe according to the present invention. Device 10 for removing demolition debris from the blast furnace tappipe according to the present embodiment
In order to remove the demolition debris by using, first, the tap pipe 11 is moved and placed on the gutter mounting carriage, and the nozzle 12, the scanning means 13, etc. are placed in the tap gutter 11. Position the suction means for dismantling debris. Next, the suction means is moved in the vertical direction by the cylinder device 15 as the elevating means to adjust the position. Specifically, by moving the piston rod 15b forward and backward in the cylinder 15a of the cylinder device 15, the nozzle 12 and its connecting system are moved up and down together with the scanning means 13. By this position adjustment, the nozzle 12a of the nozzle 12 follows the bottom surface of the tap pipe 11. Since the nozzle 12 and its connecting system are moved up and down by the cylinder device 15 in this way, it is easy to position the nozzle 12 so as to maintain a constant distance from the gutter bottom surface 11a or a constant pressing force against 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, the scraps of the refractory are collected by the suction means.

That is, the scanning means 13 causes the nozzle 12
When is rotated forward and backward by a predetermined angle, the nozzle opening 12a, which is eccentrically opened at the lower end thereof, is scanned and moved so as to follow the gutter bottom surface 11a. At that time, as described above, by moving the tapping gutter 11 in the direction opposite to the traveling direction F by the gutter mounting trolley, the scraps of the refractory material scattered on the bottom surface 11a of the tapping gutter 11 are disassembled. Gradually becomes the nozzle opening 12a.
Is sucked into and sent into the connection system. Then, the demolition waste introduced into the connection system is the suction and collection device 20.
Will be discharged to the outside of the tap gutter 11.

The demolition debris removing operation according to the present embodiment can remove demolition debris having a relatively large diameter as compared with the general vacuum method, and the suction efficiency thereof can be improved.
Further, the nozzle opening 12a does not have a complicated mechanism only by opening the notch 12b and the like, and the suction wind speed (60 m / se
Since c) is effectively used, the specifications of the suction blower can be made compact and the running cost can be kept low as compared with the general vacuum system. further,
The scanning speed of the nozzle 12 can be set high, and the air volume (50 m / sec or more) and the diameter (around 150 mm) are designed by the intake air from the notch portion 12b of the nozzle opening 12a or the beveled gap D. As a result, an appropriate solid-gas ratio can be maintained, and stable automatic suction can be performed without concern about blockage of the nozzle opening 12a and its connection system. Further, since the tip portion of the nozzle 12 is simple and the environment of the mechanical portion constituting the scanning means 13 is relatively good, the frequency of maintenance is low and the reliability of the apparatus is very high.

Then, the suction collection device 2 is connected by the above connection system.
The demolition debris having a relatively large diameter among the demolition debris transferred to 0 falls at the bend portion of the exhaust pipe 25 connected to the upper portion of the collection hopper 21, and is accommodated in the collection hopper 21. The demolition debris collected in the collection hopper 21 is placed on the belt conveyor 24 from the discharge port 21b by opening the discharge valve 21a provided at the lower part thereof, and is transferred to a predetermined place. It On the other hand, small particles of the demolition waste pass through the exhaust pipe 25, pass through the suction blower provided at the extension end thereof, and are collected by the bag filter from the intake.

As described above, in the present embodiment, since the demolition debris removal work is performed while the tapping trough 11 is placed and moved on the gutter loading carriage, the removal work is performed easily and efficiently. Is something that can be done. 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 positioning of the suction means on the gutter bottom surface 11a, the diameter of the nozzle 12,
The nozzle 1 has a speed determined by the scanning speed of the scanning means 13.
If an appropriate feeding speed is given to 2, the operation of the dismantling debris removing apparatus 10 of the present embodiment can be performed only by setting the initial condition, and can be performed in a relatively comfortable environment apart from the top of the tap pipe 11. it can. Further, since the dismantling debris can be removed efficiently and stably, the working time can be shortened. In particular, it is ideal for finishing work, because small particles of demolition debris attached to the inner surface and bottom surface 11a of the tap gutter 11 can be easily cleaned and discharged by the suction means without deteriorating the environment. is there. Since the dismantling debris removing work according to the present embodiment is performed at the time when the dismantling work is completed, it is not necessary to provide a width varying mechanism, but when the working range in the gutter width direction changes, a limit switch or a touch sensor is required. It is conceivable to regulate the width with Further, the suction gas exhausted from the suction blower discharge side can be collected by connecting it to the existing dust collector pipe, and if configured in this way, the investment amount can be suppressed and the environment can be improved. Can be maintained at

The second embodiment of the apparatus for removing demolition debris from a blast furnace tappipe according to the present invention is such that the nozzle 12 and the scanning means 1 are provided at the tip of the boom of a track-type traveling carriage such as a backhoe.
It is equipped with 3 etc. that can be moved up and down.

In the method of removing demolition debris using the demolition debris removing device of the second embodiment, first, the crawler type traveling carriage is equipped with the suction means such as the nozzle 12 and the scanning means 13 and the like. It is located in the tap iron gutter 11. Next, the suction means is positioned in the tappipe 11 by the boom,
By moving the suction means up and down by the cylinder device as the lifting means 15, the nozzle 12 is moved.
The nozzle opening 12a of the above is made to follow the bottom surface 11a of the tap pipe 11. Then, while moving the crawler-type traveling carriage, the scanning means 13 causes the suction means to scan in an arc shape in the gutter width direction, and the collected demolition waste is discharged to the outside of the tapping gutter 11. The sucked demolition waste is collected by the suction collecting device 20 via the elbow joint 17 and the flexible hose 18.

The second embodiment has basically the same effects as the first embodiment, but particularly in the second embodiment, by moving the crawler type traveling carriage, 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 of the crawler type traveling carriage, it can be used also as a disassembling mechanism such as a breaker, the apparatus can be made compact as a whole, and the manufacturing cost thereof can be reduced.

If a general-purpose vacuum car is adopted instead of the backhoe, the nozzle and hose can be used as they are. Therefore, if the scanning means 13 and the elevating means 15 are mounted on this, it is expensive. The suction device itself can be rented and the investment amount can be reduced.

[0039]

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 work for removing demolition debris of refractory materials, and It has an excellent effect that the removal efficiency can be dramatically improved.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of an apparatus for removing demolition debris from 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 front view showing a demolition debris removing device for a blast furnace tappipe according to the present embodiment.

FIG. 4 shows the shape of a nozzle opening in the demolition debris removing apparatus of the present embodiment, (a) is a schematic view when a notch is opened in the nozzle opening, and (b) is a case where the nozzle opening is cut off. FIG.

5A and 5B show swivel means in the dismantling debris removing apparatus of the present embodiment, FIG. 5A is a side view thereof, and FIG. 5B is a plan view thereof.

FIG. 6 is a side view showing the suction collecting device in the dismantling debris removing device of the present embodiment.

FIG. 7 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. 8 is an explanatory diagram showing a state in which demolition debris of a refractory is removed by a shovel in a conventional dismantling operation of a blast furnace tappipe.

[Explanation of symbols]

 10 Demolition debris removal device 11 Tap iron gutter 11a Bottom face of tap iron gutter 12 Nozzle 12a Nozzle port 13 Scanning means 20 Suction collecting device

Front Page Continuation (72) Inventor Takayuki Uchida 20-1 Shintomi, Futtsu City, Chiba Nippon Steel Corporation Central Research Division

Claims (10)

[Claims] 1. A nozzle hung down to face a bottom surface of a taphole, a nozzle opening eccentrically opened at a lower end portion of the nozzle, and a scanning movement of the nozzle opening so as to follow the bottom surface of the gutter. Therefore, a scanning means for rotating the nozzle forward and backward at a predetermined angle, and a suction collecting device connected to the nozzle for sucking and collecting demolition waste of refractory from the nozzle opening are provided. A device for removing debris from a blast furnace tappipe, which is characterized in that 2. The apparatus for removing demolition debris from a blast furnace tap pipe according to claim 1, wherein the nozzle is supported by an elevating means for moving the nozzle up and down. 3. A suction hopper for accommodating demolition debris, a suction blower for applying a suction force to the nozzle and its connecting system, and a disassembly of the suction blower during suction of the suction blower. It consists of a bag filter for removing dust,
The device for removing demolition debris of a blast furnace tap gutter according to claim 1 or 2. 4. The demolition debris of the blast furnace tap pipe according to claim 1, wherein a notch is opened in the nozzle opening so as to face the front side in the direction perpendicular to the scanning direction. Removal device. 5. A notch portion is opened in the nozzle opening so as to face the scanning direction, and the nozzle is provided with a turning means around its axis so that the notch portion is always positioned forward in the scanning direction. Item 7. A device for removing demolition debris from a blast furnace tap gutter according to any one of claims 1 to 3. 6. The nozzle opening is cut so that a void portion is located so as to face the scanning direction, and the nozzle is provided around the axis thereof so that the slit void portion is always positioned forward in the scanning direction. An apparatus for removing demolition debris from a blast furnace tap pipe according to any one of claims 1 to 3, further comprising a turning means. 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. A device for removing demolition debris from a blast furnace tap pipe according to claim 1, wherein the nozzle and the scanning means are mounted on a crawler type traveling carriage. 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 imitate the inner surface of the tapping gutter, and while moving the tapping gutter in the longitudinal direction with the gutter mounting trolley, while scanning the suction means in the gutter width direction with the scanning means, the collected demolition waste of the refractory is collected. A method for removing demolition debris from a blast furnace tappipe, which is characterized in that it is discharged to the outside of the tappipe. 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, while moving the track-type traveling carriage, while scanning the suction means in the gutter width direction by the scanning means, the collected demolition waste of the refractory is discharged to the outside of the tapping gutter. How to remove debris from pig iron gutter.