JP2016017671A - Furnace construction method for vertical furnace and guide panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a furnace construction method and a guide panel in which work is facilitated, working efficiency and positional accuracy are improved.SOLUTION: When a furnace body 1 including a steel shell 2, a castable installed inside the steel shell 2 and shaped refractories 3, 4 installed inside the castable is constructed, a guide panel 10 is mounted along the furnace inside surface of the steel shell 2, the furnace inside surface of the guide panel 10 is position set at a prescribed furnace inside position, the shaped refractories 3, 4 are installed along the furnace inside surface of the guide panel 10, the guide panel 10 is removed, and the castable is installed at a clearance between the shaped refractories 3, 4 and the steel shell 2. The guide panel 10 has a guide member to which the shaped refractories 3, 4 are abutted, an upper holder 20 for supporting the upper part of the guide member and a lower holder 30 for supporting the lower part of the guide member. The furnace inside position of the guide panel 10 can be accurately and easily indexed by an adjustment mechanism of the upper holder 20.SELECTED DRAWING: Figure 7

Description

  TECHNICAL FIELD The present invention relates to a method for building a vertical kiln and a guide panel, and in a vertical kiln such as a hot stove or a CDQ (coke dry dust collector), a fixed refractory such as a refractory brick or a heat-insulating brick is placed inside a steel shell. The present invention relates to a method for installing an object and a jig used in the method.

  In vertical kilns such as hot air furnaces and CDQs, in order to mitigate the effects of internal heat on the structural iron skin, lining with regular refractory materials such as refractory bricks and heat-insulating bricks is provided inside the iron skin. It is installed.

  For example, in Patent Document 1, in the construction of a hot stove, castable (unshaped refractory, heat-resistant caster) is sprayed on the inner peripheral surface of the iron skin, and a cushion material such as rock wool is used on the inside thereof. Heat-resistant bricks and fire-resistant bricks, which are regular refractories, are stacked to form multiple fire-resistant linings.

  In addition, the hot blast furnace which performs construction of the refractory mentioned above is a huge thing with an outer diameter of 10 m (meter) and a height of 50 m in Patent Document 1, for example. For this reason, when constructing the refractory inside the above-described iron skin, a level is set for each height (for example, 1.2 m) that can be efficiently constructed by an operator, and scaffolds are assembled sequentially at the height of each level. Increasing or raising and lowering scaffolds are used.

  By the way, in the conventional construction method like patent document 1, the assembly | attachment of the scaffold for every hierarchy is carried out to the spraying of the castable to the inner side of an iron skin, the stacking of the fireproof brick inside, and the stacking of the heat insulating brick inside it, respectively. There was a problem that the work efficiency could not be improved because it was necessary to increase the platform and raise and lower the scaffold.

On the other hand, by the present applicant, heat insulation bricks and refractory bricks are first stacked inside the iron skin, and castable is injected into the gap between the outer peripheral surface and the inner peripheral surface of the iron skin later. A method has been developed (see Patent Document 2).
According to this construction method, it is not necessary to use a scaffold only for spraying castable, and the process can be simplified and the construction period can be shortened.

In Patent Document 2 described above, when installing the first heat-insulating brick with an interval inside the iron skin, an example is shown in which a water thread is hung inside the iron skin and the water thread is used as a position reference. ing.
That is, it is conceivable to use the nearest iron skin as the position reference of the first heat insulating brick. However, the iron skin is likely to be thermally deformed by welding or the like during construction, and is not suitable as a position reference. Therefore, a water thread hung along the inner side of the iron skin is used, and this water thread is accurately positioned at a predetermined radial position from the design center of the furnace body. If the first heat-insulating bricks are piled up using such a water thread as a position reference, the heat-insulating bricks and fire-resistant bricks that are stacked on the inside can also be installed at accurate positions.

  Further, in Patent Document 2 described above, the first heat insulating brick described above is installed for each predetermined level, and other heat insulating bricks and fire bricks are installed inside, and castable is injected into the gap between them and the iron skin. doing. Thereby, the head pressure or the like when the castable is injected is borne by the multiple heat-insulating bricks and the refractory bricks.

Japanese Patent Publication No.56-24007 Japanese Patent No. 5469774

As described above, by using the water thread hung along the inner side of the iron skin, it is possible to accurately position the heat-insulating brick first installed in each layer.
However, as described above, in the huge hot stove, the interval between the water strings becomes wide, and there is a possibility that the position accuracy is not sufficient in the middle part. On the other hand, if the interval between the water yarns is narrowed, the number of water yarns becomes enormous and the work efficiency may be reduced.
As described above, in the method using the water yarn as the position reference, it is difficult to increase the working efficiency while increasing the position accuracy.

Further, the above-described multiple heat-insulating bricks and refractory bricks can sufficiently withstand the head pressure during castable pouring when they are stacked. However, sufficient strength is not obtained during the construction.
For example, when stacking the first insulating brick row and stacking another insulating brick row along the inside, if the force pushing the inner insulating brick against the outer insulating brick is too strong, the outer insulating brick can withstand. It may be tilted.
In order to avoid such problems, the installation of the above-mentioned multiple heat-insulating bricks and refractory bricks requires a high level of technology and requires careful attention to the work, which may reduce work efficiency. It was.

  An object of the present invention is to provide a method for constructing a vertical kiln and a guide panel that are easy to work and can improve work efficiency and positional accuracy.

  A method for constructing a vertical kiln according to the present invention is a method of constructing a vertical kiln having an iron shell, a castable installed inside the iron shell, and a fixed refractory installed inside the castable. A method is provided, wherein a guide panel is installed along a furnace inner surface of the iron skin, a furnace inner surface of the guide panel is positioned at a predetermined furnace position, and the fixed shape is formed along the furnace inner surface of the guide panel. A refractory is installed, the guide panel is removed, and the castable is installed at a distance between the fixed refractory and the iron skin.

In the present invention, as the vertical furnace, a furnace having a cylindrical furnace body extending in the vertical direction such as a hot stove or CDQ can be used. As the iron skin, for example, a steel plate formed in a cylindrical shape can be used to constitute a furnace body of a vertical kiln. Thermal insulation bricks and refractory bricks can be used as the regular refractories.
The predetermined in-furnace position for positioning the inner surface of the guide panel in the furnace corresponds to the position of the outer surface of the shaped refractory, that is, the position of the surface that forms the space where the castable is installed with the iron skin, This position is set based on the position reference of the furnace body. For example, the center axis of the reactor core, that is, the furnace body may be set as the reference position, and the inner surface of the guide panel may be positioned on the cylindrical surface having a certain radius from the center axis.

In the present invention, a guide panel is installed along the furnace inner surface of the iron skin, and a fixed refractory such as a heat insulating brick is installed along the guide panel. The fixed refractory to be installed can be held by the guide panel, and the fixed refractory can be prevented from tilting or shifting. Moreover, the guide panel positions the furnace inner side surface for guiding the fixed refractory at a predetermined furnace position in advance. For this reason, the in-furnace position of the fixed refractory is accurately positioned by the guide panel.
As described above, according to the method for constructing a vertical furnace according to the present invention, by using the guide panel that holds the fixed refractory in a predetermined position in the furnace, the installation work of the fixed refractory inside the iron skin can be performed. It can be easily performed, and work efficiency and position accuracy can be improved.

In the method of building a vertical kiln according to the present invention, for each level of a predetermined height, the guide panel is installed, the fixed refractory is installed along the guide panel, the guide panel is removed, and the castable It is desirable to repeat the installation.
In the present invention, the height of the floor is set to 0.8 to 1.6 m, preferably 1.2 m in consideration of work efficiency. And it is desirable to set the height dimension of a guide panel according to the hierarchy height.
In the present invention as described above, it is possible to perform reliable construction even for a huge vertical kiln by repeating the work for each layer of a predetermined height.

In the method for constructing a vertical furnace according to the present invention, it is desirable that the lower part of the guide panel is brought into contact with the outer peripheral surface of the fixed refractory in the lower layer when the guide panel is installed in the upper layer. .
In the present invention, the lower part of the fixed refractory already positioned at a predetermined furnace size can be used to easily position the lower part of the guide panel installed at the upper level. . As a result, the positioning of the guide panel only needs to be performed on the upper part of the guide panel, and the operation can be further simplified.

  The guide panel of the present invention is a guide panel used in a method for constructing a vertical kiln having an iron skin, a castable installed inside the iron skin, and a shaped refractory installed inside the castable. The guide member has a guide member with which the fixed refractory material comes into contact, and an upper holder that supports an upper portion of the guide member, and the upper holder is connectable to a furnace inner surface of the iron skin. And an adjusting mechanism that supports the guide member and is capable of adjusting the position with respect to the connecting member.

In the present invention, the connecting member is preferably one that can be connected and can be removed again. For example, a magnet (including an electromagnet) that can be attracted to the iron shell by magnetic force, an elastomer suction cup or a vacuum cup that can be attracted under reduced pressure, or a double-sided adhesive sheet can be used. When using a suction cup or an adhesive sheet, it is desirable to smooth the inside of the iron skin with a paint or to apply a smooth suction plate.
In the present invention, various structures capable of adjusting the relative position, such as a screwed structure such as a screw shaft and a double nut, and an expansion / contraction mechanism using two members that can be fixed and released from each other, can be used as the adjusting mechanism. The adjustment mechanism may use a motor or the like in addition to manual adjustment.

In such this invention, a guide panel is arrange | positioned in the furnace inner surface of an iron skin, and a guide panel is supported by an iron skin by connecting the connection member of an upper holder to an iron skin.
And the position in the furnace of a guide panel is adjusted by adjusting the adjustment mechanism of an upper holder. The guide panel position is adjusted by, for example, measuring the distance from the water thread (along the central axis of the furnace body) hung from the core position, or by other surveying methods, etc. Set to be in the furnace position.
As a result, the guide panel can be arranged at a predetermined furnace position, and the position of the inside of the furnace on the outer surface of the shaped refractory positioned by the guide panel can be accurately placed. Position accuracy can be ensured.

In the guide panel of the present invention, it is preferable that the guide panel further includes a lower holder that supports a lower portion of the guide member.
In the present invention, the lower part of the guide member can be supported by the lower holder, the posture of the guide member can be stabilized throughout, and the guide panel can be accurately positioned.
As such a guide member, the load support of the guide member may be borne by the upper holder, and any guide member can be used as long as the position in the direction intersecting the iron shell, that is, the direction away from the iron skin can be regulated.

As the lower holder of the present invention, each configuration described later can be used, but as the lower holder, a mechanism similar to the above-described upper holder may be used. However, such a mechanism is difficult to remove after loading the regular refractory, and remains after the completion of the furnace construction.
The lower holder is not essential and may be omitted. In this case, the guide panel is suspended only by the upper holder, but the posture can be maintained along the vertical direction by gravity and can be used for guiding a fixed refractory.

In the guide panel of the present invention, the lower holder may be a pressing member that urges the guide member toward the side away from the iron skin.
In the present invention, a wedge-shaped member made of a synthetic resin material is suitable as the pressing member. You may use the airbag etc. which expand | swell by operation, and the two members displaced by a motor.

  In the present invention, a fixed refractory at a lower level can be used for positioning the guide panel. That is, the lower part of the guide panel is introduced between the outer peripheral surface of the lower shaped refractory and the furnace inner surface of the iron skin, and the pressing member is inserted between the guide panel and the iron skin. The pressing member urges the guide panel toward the side away from the iron shell, that is, toward the outer peripheral surface of the fixed refractory. In the case where a wedge-shaped member is used as the pressing member, this urging is performed by driving the wedge-shaped member between the guide panel and the iron skin.

  By this urging, the lower part of the guide member is pressed against the outer peripheral surface of the regular refractory, and maintained at the position in the furnace of the outer peripheral surface of the regular refractory. Therefore, if the lower fixed refractory is installed so that the outer peripheral surface is at the predetermined furnace position, the lower part of the guide member can be positioned at the predetermined furnace position by the lower holder using the pressing member. it can.

In the guide panel of the present invention, it is desirable that the pressing member includes a wedge-shaped member made of a synthetic resin material and a string-shaped member that connects the wedge-shaped member to an upper portion of the guide member.
In the present invention, as described above, the lower holder can be formed by driving a wedge-shaped member between the iron skin and the guide panel. Further, by pulling the string-like member, the wedge-like member driven between the iron skin and the guide panel can be pulled out. In particular, the string-like member is connected to the upper portion of the guide member, so that it can be easily operated from above even after the regular refractory is stacked along the guide member.

In the guide panel of the present invention, the lower holder may be a connection mechanism that connects lower portions of the adjacent guide members.
In the present invention, by connecting the lower portions of the adjacent guide members with the connecting mechanism, the positional variation of the individual guide members with respect to the iron shell can be eliminated, and a fixed refractory should be installed in the upper holder. If the guide member can be set at an accurate position, the lower portion of the guide member can also be supported at the intended position.

  In the guide panel of the present invention, the coupling mechanism includes a receiving member formed on one of the adjacent guide members and a coupling formed so as to protrude and retract on the other of the adjacent guide members and connectable to the receiving member. It is desirable to have a member.

In the present invention, as the receiving member, the slot formed on the side surface (surface facing the other guide member) of one guide member, the outer surface (surface facing the iron skin) or the inner surface (standard shape) of the guide member. A hook or pocket fixed to the surface facing the refractory can be used.
Further, as the connecting member, a lever or a rod that can be projected and retracted on the side surface of the other guide member can be used. For example, the lever or the rod can be configured to be movable back and forth in the longitudinal direction so that the tip can reach the receiving member, or can be pivotally supported by the rotating shaft so that the tip can reach the receiving member. It is good also as a structure.

The receiving member and the connecting member can be respectively arranged on both sides of the lower part of one guide member, and by arranging the same guide member, the receiving member and the connecting member can be sequentially connected. However, the guide member having a pair of receiving members and the guide member having a pair of connecting members may be used, and these may be alternately arranged and connected to each other.
In addition, as a connection mechanism, not only what has a movable part like a connection member but the structure etc. which fit the unevenness | corrugation etc. which were formed in the side surface of a guide member may be sufficient.

In the guide panel of the present invention, the lower holder may be a groove formed on an upper surface of the castable filled in a lower layer than the lower holder and into which the lower portion of the guide member can be inserted.
In the present invention as described above, the lower part of the upper level guide member can be supported by the lower level castable, and it is not necessary to install an additional structure as a lower holder on the guide member, thus simplifying the structure. Is possible.

Furthermore, in forming the groove, it is possible to perform the work efficiently and easily by forming the groove after the castable of the lower layer is filled and before the castable is solidified.
In addition, the position of the groove is preferably the inner side of the upper surface of the castable, that is, a position close to the fixed refractory. When the groove is separated from the regular refractory, the guide member may be adjusted to a position where it abuts the regular refractory by using an extension member accommodated in the groove.

In the guide panel according to the aspect of the invention, it is preferable that the groove is formed in a step shape along an edge of the upper surface of the castable that is away from the iron skin.
In the present invention as described above, a groove that supports the guide member can be easily formed by forming a continuous step at the corner of the edge of the castable, and the guide member is positioned at a position where the guide member abuts the fixed refractory. Can be supported.

  According to the vertical furnace construction method and guide panel of the present invention, the fixed refractory can be held at the predetermined furnace position by the guide panel, and the installation work of the fixed refractory inside the iron skin is easy. Therefore, working efficiency and position accuracy can be improved.

The front view which shows the guide panel of 1st Embodiment of this invention. The top view which shows the guide panel of the said 1st Embodiment. The expanded sectional view which shows the upper holder of the guide panel of the said 1st Embodiment. The disassembled perspective view which shows the upper holder of the guide panel of the said 1st Embodiment. The perspective view which shows the pressing member of the guide panel of the said 1st Embodiment. The schematic diagram which shows the installation process of the guide panel in the lowest layer of the said 1st Embodiment. The schematic diagram which shows the installation process of the heat insulation brick in the lowest layer of the said 1st Embodiment. The schematic diagram which shows the filling process of the castable in the lowest layer of the said 1st Embodiment. The schematic diagram which shows the installation process of the guide panel in the intermediate | middle layer of the said 1st Embodiment. The schematic diagram which shows the installation process of the heat insulation brick in the intermediate | middle layer of the said 1st Embodiment. The schematic diagram which shows the filling process of the castable in the intermediate | middle layer of the said 1st Embodiment. Sectional drawing which shows the principal part of the guide panel of 2nd Embodiment of this invention. The top view which shows the principal part of the guide panel of the said 2nd Embodiment. The front view which shows the principal part of the guide panel of the said 2nd Embodiment. Sectional drawing which shows the principal part of the guide panel of 3rd Embodiment of this invention. Sectional drawing which shows the principal part of the guide panel of 4th Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
In the present embodiment, a combustion chamber or a mixed cooling chamber of a hot blast furnace for a blast furnace, which is a vertical furnace, is constructed. And in the construction of the furnace body, the structure and construction procedure described in Patent Document 2 described above are employed.

  Specifically, as shown in FIG. 7 (C), a heat-insulating brick 3 and a refractory brick 4 which are regular refractories are installed at intervals inside the iron shell 2 forming the furnace body 1. As shown in FIG. 8 (A), the castable 5 is filled in the space between the furnace inner surface of the iron shell 2 and the furnace outer surface of the heat insulating brick 3 and solidified.

  In particular, in this embodiment, as shown in FIGS. 6 (C) and 9 (C), the guide panel 10 is installed and the furnace outer surface of the heat insulating brick 3 installed along the iron shell 2 is accurately set. It positions to the position in a proper furnace (refer FIG. 7 (A) and FIG. 10 (A)). Further, when the refractory brick 4 is installed along the heat insulating brick 3, the heat insulating brick 3 is supported to prevent the inclination (see FIGS. 7B and 10B).

1 to 5 show a guide panel 10 of the present embodiment.
As shown in FIG. 1, the guide panel 10 is configured by stretching a thin plate-like guide member 12 on one side of a lattice-like frame 11.
As shown in FIG. 2, an upper holder 20 is installed on the upper frame of the frame 11 and a lower holder 30 is installed on the lower frame in order to support the guide panel 10 along the iron shell 2.

The frame 11 is formed by joining, for example, steel materials in a lattice shape.
The frame 11 is not limited to a steel material, and may be an aluminum alloy or other metal material, or may be a material other than a metal such as a synthetic resin material.

The guide member 12 is formed of, for example, a transparent acrylic plate, and is fixed to each lattice frame of the frame 11 by adhesion or a mounting bracket.
In this embodiment, the guide member 12 is transparent, so that an operator inside the furnace can work while visually checking the outside of the furnace. However, the guide member 12 is not limited to being transparent.

  The guide member 12 is not limited to a synthetic resin plate material such as an acrylic plate, and may be a metal plate material or other plate material. With such other materials, it is difficult to make the guide member 12 transparent. However, it is possible to see through the opposite side by forming the guide member 12 in a mesh (metal mesh shape), or by forming openings intermittently like punching metal or expanded metal. Such a guide member 12 can also provide the same visual effect as the transparent acrylic guide member 12 described above.

As shown in FIGS. 3 and 4, the upper holder 20 has a connection member 21 that can be connected to the furnace inner surface of the iron skin 2, and an adjustment mechanism that supports the guide panel 10 and can be adjusted in position relative to the connection member 21. 22.
The connection member 21 is a magnet block that can be attracted to the iron shell 2 by a magnetic force.

The adjustment mechanism 22 has a J-shaped shaft portion 220 connected to the connection member 21, and the shaft portion 220 is formed with a male screw shape 221 at the end opposite to the connection member 21.
Nipping members 222 and 223 and a pair of nuts 224 and 225 for holding the guide panel 10 are inserted through the male screw shape 221 of the shaft portion 220.
These sandwiching members 222 and 223 can sandwich the guide panel 10 by sandwiching the frame 11 and the guide member 12 together at the upper part of the guide panel 10 and tightening them with a pair of nuts 224 and 225.

  In such an adjustment mechanism 22, the position can be adjusted to an arbitrary position along the male screw shape 221 of the shaft portion 220 by selecting the fastening fixing position of the nuts 224 and 225 in the male screw shape 221. And the relative position of the guide panel 10 and the connection member 21 can be adjusted by selecting the position clamped and fixed with the nuts 224 and 225.

Such an upper holder 20 is connected to the furnace inner surface of the iron shell 2 by the connecting member 21, and the guide panel 10 is supported by being suspended from the furnace inner surface of the iron shell 2. And the suspension position of the guide panel 10 can be adjusted in the radial direction of the furnace body 1 by adjusting the distance from the iron shell 2 by the adjusting mechanism 22.
In addition, as a position of the guide panel 10, the distance (radius) from the center axis line of the furnace body 1 is measured, and this distance is the furnace outer surface of the heat insulating brick 3 along the iron shell 2 (see FIG. 7A). ) Adjust the position so that it is in the furnace position.

As shown in FIGS. 1, 2, and 5, the lower holder 30 includes a wedge-shaped member 31 that is driven between the lower portion of the guide panel 10 and the furnace inner surface of the iron skin 2.
The wedge-shaped member 31 is a wedge-shaped block in which two contact surfaces 311 and 312 are inclined with respect to each other.
The wedge-shaped member 31 is formed of an elastomer, that is, a material having elasticity, and is formed of, for example, a relatively hard material of natural rubber or synthetic rubber, or a synthetic resin material having elasticity.

  The wedge-shaped member 31 is driven inward in the horizontal direction (inward of the guide panel 10) from both sides of the lower portion of the guide panel 10 that is suspended along the iron skin 2. The wedge-shaped member 31 urges the iron skin 2 and the guide panel 10 in directions away from each other due to the wedge shape.

  Accordingly, if there is a heat insulating brick 3 that serves as a reference for the position in the furnace on the furnace inner surface side of the guide panel 10, the wedge-shaped member 31 is driven to urge the guide panel 10 to the side away from the iron shell 2, It can be made to press against the heat insulating brick 3 on the inner surface side. Thereby, the wedge-shaped member 31 can implement | achieve the function as a press member (refer FIG.6 (C) and FIG.9 (C)).

One end of a string-like member 32 is connected to the wedge-shaped member 31, and the other end of the string-like member 32 is connected to a part of the upper holder 20 (for example, a J-shaped shaft portion 220).
The string-like member 32 is, for example, a steel wire (twisted wire), and may be a wire that has flexibility and can obtain the desired tensile strength, such as polyamide resin (product name nylon or the like) or aramid resin ( It may be a stranded wire such as a trade name Kevlar) or a single wire.

  By being connected by such a string-like member 32, the operator can pull the string-like member 32 in the vicinity of the upper holder 20 even after the heat-insulating brick 3 is stacked on the furnace inner surface of the guide panel 10. The wedge-shaped member 31 can be extracted and recovered from the state of being driven between the guide panel 10 and the iron shell 2.

  In the present embodiment, the above-described guide panel 10 is used to stack the heat insulating bricks 3 and the refractory bricks 4 at intervals inside the furnace 2 of the iron shell 2, and the castable 5 is filled into the intervals inside the furnace 2. (See FIGS. 6 to 11). These constructions are performed according to the following procedure.

  In the construction, the furnace body 1 is divided into a plurality of floors having a height of 1.2 m, the guide panel 10 is installed, the heat insulating brick 3 and the fire brick 4 are removed, the guide panel 10 is removed, and the castable 5 is filled in each floor. Repeat.

At this time, when the guide panel 10 is installed in the upper level, the upper part of the guide panel 10 is suspended from the iron shell 2 by the upper holder 20, and the lower part of the guide panel 10 is a wedge-shaped member of the lower holder 30. 31 is pressed and fixed to the outer peripheral surface of the heat insulating brick 3 in the lower layer.
In order to execute such a procedure, for the lowest level, the heat insulating brick 3 serving as a position reference for installing the guide panel 10 is first constructed.

As shown in FIG. 6 (A), at the bottom of the furnace body 1, first, the heat-insulating brick 3 is stacked for one stage inside the iron shell 2. The in-furnace position of the heat insulating brick 3 is determined from a predetermined radius from the center of the furnace body 1, thereby accurately setting the in-furnace position of the outer surface of the heat insulating brick 3.
Subsequently, the refractory brick 4 is stacked on the inside of the furnace of the heat insulating brick 3. The refractory brick 4 has a number of steps corresponding to one step of the heat-insulating brick 3, and here, the number of steps is two. The refractory brick 4 is brought into contact with the furnace inner surface of the heat insulating brick 3.

When the heat-insulating brick 3 and the refractory brick 4 serving as the position reference for installing the guide panel 10 can be continuously installed in a circumferential shape, as shown in FIG. 6 (B), along the furnace inner side of the iron skin 2 A guide panel 10 is installed.
The guide panel 10 is suspended and supported on the inner surface of the iron shell 2 by the upper holder 20. The lower part of the guide panel 10 is inserted into a gap between the furnace inner surface of the iron skin 2 and the furnace outer surface of the heat insulating brick 3.
Further, as shown in FIG. 6C, a lower holder 30 is installed between the guide panel 10 and the iron shell 2 at the lower part of the suspended guide panel 10, and a wedge-shaped member 31 (see FIG. 5). , The lower part of the guide panel 10 is pressed against the furnace outer surface of the heat insulating brick 3.

  Thus, the guide panel 10 is fixed along the inner side of the iron skin 2. At this time, the lower portion of the guide panel 10 is accurately positioned at a predetermined furnace position by the furnace outer surface of the heat insulating brick 3. On the other hand, in the upper part of the guide panel 10, the position in the furnace is accurately determined by the adjusting mechanism 22 (see FIG. 4).

When the guide panel 10 can be installed over the entire circumference of the furnace body 1, the lowermost insulating brick 3 and the refractory brick 4 are installed.
As shown in FIG. 7A, the heat-insulating bricks 3 for this layer are sequentially stacked on the heat-insulating bricks 3 previously set as the position reference. At this time, the heat insulating brick 3 is brought into contact with the guide member 12 of the guide panel 10, thereby accurately setting the position in the furnace.

  Subsequently, as shown in FIG. 7 (B), the fire bricks 4 for this layer are sequentially stacked on the fire brick 4 that has been previously installed as a position reference for installing the guide panel 10. . At this time, the refractory brick 4 is brought into contact with the furnace inner side surface of the heat insulating brick 3 previously stacked along the guide panel 10, thereby accurately setting the position in the furnace.

When the heat insulating bricks 3 and the refractory bricks 4 at this level can be installed over the entire circumference, the guide panel 10 is removed from the gap between the heat insulating brick 3 and the iron skin 2 as shown in FIG.
For removal, first, the lower holder 30 is removed by pulling the string-like member 32 (see FIG. 5). After the lower portion of the guide panel 10 is released, the upper holder 20 is separated from the iron shell 2, and the guide panel 10 Can be pulled out along the iron skin 2.

When the guide panel 10 can be removed, the castable 5 is poured and filled into the gap between the heat insulating brick 3 and the iron skin 2 as shown in FIG.
As a result, the construction of the lowermost insulating brick 3, the refractory brick 4 and the castable 5 is completed.

  When the construction of the lowermost layer is completed, as shown in FIG. 8 (B), a scaffold 6 is installed inside the furnace of the refractory brick 4, and the top of the heat-insulated brick 3, the refractory brick 4 and the castable 5 already installed The same structure is constructed as the layer (intermediate layer).

  The construction of the intermediate layer is performed on the heat insulating brick 3, the refractory brick 4 and the scaffold 6 in the lower hierarchy as shown in FIG. In the intermediate layer, the furnace outer surface of the heat insulating brick 3 in the lower hierarchy is used as a position reference for the lower portion of the guide panel 10.

As shown in FIG. 9B, the guide panel 10 is installed along the furnace inner side of the iron skin 2.
The guide panel 10 is suspended and supported on the inner surface of the iron shell 2 by the upper holder 20. The lower part of the guide panel 10 is inserted into a gap between the furnace inner side surface of the iron skin 2 and the furnace outer side surface of the heat insulating brick 3 in the lower layer.
Further, as shown in FIG. 9C, a lower holder 30 is installed between the guide panel 10 and the iron shell 2 at the lower part of the suspended guide panel 10, and a wedge-shaped member 31 (see FIG. 5). , The lower part of the guide panel 10 is pressed against the furnace outer surface of the heat insulating brick 3.

  Thus, the guide panel 10 is fixed along the inner side of the iron skin 2. At this time, the lower portion of the guide panel 10 is accurately positioned at a predetermined furnace position by the furnace outer surface of the heat insulating brick 3. On the other hand, in the upper part of the guide panel 10, the position in the furnace is accurately determined by the adjusting mechanism 22 (see FIG. 4).

When the guide panel 10 can be installed over the entire circumference of the furnace body 1, the heat insulating brick 3 and the refractory brick 4 at the current level are installed.
As shown in FIG. 10A, the heat insulating bricks 3 for the current layer are sequentially stacked on the heat insulating bricks 3 of the lower layer. At this time, the heat insulating brick 3 is brought into contact with the guide member 12 of the guide panel 10, thereby accurately setting the position in the furnace.

  Subsequently, as shown in FIG. 10B, the fire bricks 4 for the current layer are sequentially stacked on the fire bricks 4 of the lower layer. At this time, the refractory brick 4 is brought into contact with the furnace inner side surface of the heat insulating brick 3 previously stacked along the guide panel 10, thereby accurately setting the position in the furnace.

If the heat insulation brick 3 and the firebrick 4 of the present hierarchy can be installed over the perimeter, the guide panel 10 will be removed from the clearance gap between the heat insulation brick 3 and the iron skin 2, as shown in FIG.10 (C).
For removal, first, the lower holder 30 is removed by pulling the string-like member 32 (see FIG. 5). After the lower portion of the guide panel 10 is released, the upper holder 20 is separated from the iron shell 2, and the guide panel 10 Can be pulled out along the iron skin 2.

When the guide panel 10 can be removed, the castable 5 is poured and filled in the gap between the heat insulating brick 3 and the iron shell 2 as shown in FIG.
As a result, the construction of the heat-insulating brick 3, the refractory brick 4 and the castable 5 at the current level is completed.

When the construction of the current level is completed, as shown in FIG. 11 (B), the scaffold 6 is installed inside the furnace of the refractory brick 4, and on the heat-insulated brick 3, the refractory brick 4 and the castable 5 that have already been constructed, Repeat the upper level construction.
When all the floors set in the furnace body 1 have been constructed, all the scaffolds 6 are removed. Thereby, the furnace body 1 in which the heat insulating brick 3, the refractory brick 4 and the castable 5 are installed on the entire furnace inner side surface of the iron skin 2 is completed.

In addition, since this embodiment performs the construction of the combustion chamber or mixed cooling chamber of the blast furnace hot blast furnace which is a vertical kiln, a scaffold 6 is installed inside the furnace of the refractory brick 4, and this scaffold 6 Was working on.
In contrast, when building a heat storage chamber of a blast furnace hot stove, which is a vertical kiln, checker bricks are stacked inside the refractory bricks 4. In this case, the same work can be performed on the checker brick, and the separate scaffold 6 can be omitted. And in the construction process mentioned above, in the procedure which installs the scaffold 6, it can apply to the furnace construction of a thermal storage chamber as it is by performing the operation | work which piles up a checker brick. The injection time of the castable 5 in the present embodiment may be before installation of the scaffold 6 (or checker brick), after installation, or during installation.

According to this embodiment, the following effects can be obtained.
In the present embodiment, the guide panel 10 is installed along the furnace inner surface of the iron skin 2, and the heat insulating brick 3 is held by the guide panel 10, so that the fire brick 4 is brought into contact with the heat insulating brick 3 from the inside. However, it can prevent that the heat insulation brick 3 inclines or shift | deviates.

Moreover, since the guide panel 10 positions the inner surface of the furnace for guiding the heat insulating brick 3 in advance in a predetermined position in the furnace, the position in the furnace of the heat insulating brick 3 and the refractory brick 4 inside thereof is also accurately positioned. be able to.
Thus, in this embodiment, by using the guide panel 10, the installation work of the heat insulating brick 3 and the refractory brick 4 inside the iron skin 2 can be facilitated, and work efficiency and positional accuracy can be improved.

  In the present embodiment, the construction of the heat insulating brick 3, the refractory brick 4 and the castable 5 is repeated as the work for each layer having a height of 1.2 m. By repeating the work for each level, reliable construction can be performed even in a huge hot stove having a height of 40 m or the like.

In the present embodiment, the lower portion of the guide panel 10 installed at the upper level is positioned by using the outer surface of the lower level heat-insulating brick 3 that has already been positioned at the predetermined inner dimensions. Therefore, the positioning of the guide panel 10 at each level has only to be performed on the upper part of the guide panel 10, and the operation can be further simplified.
Furthermore, since the position of the upper portion of the guide panel 10 is accurately determined at each level, even when a number of levels are repeated, the position accuracy is not lowered and high-precision construction can be performed.

In the present embodiment, since the guide panel 10 has a simple structure in which the guide member 12 is stretched on the frame 11, the implementation is easy and the equipment cost can be reduced.
Further, in supporting the guide panel 10, the upper holder 20 is suspended from the iron shell 2 and the lower holder 30 is fixed to the heat insulating brick 3, so that stable support can be performed.

In the upper holder 20, by using the magnet type connection member 21, it is easy to attach to and detach from the iron skin 2 while ensuring sufficient suspension strength.
Further, the adjustment mechanism 22 using the double nuts 224 and 225 can easily adjust the position with respect to the iron skin 2 while holding the guide panel 10.

In the lower holder 30, by pressing using the wedge-shaped member 31, the furnace outer surface of the heat insulating brick 3 in the lower layer can be used for positioning the guide panel 10.
In particular, by using the wedge-shaped member 31 as a pressing member for pressing, pressing can be performed by a simple operation of driving into the gap between the iron shell 2 and the heat insulating brick 3 and can be easily released by pulling out. Can do.

Furthermore, by connecting the wedge-shaped member 31 with the string-like member 32, the wedge-shaped member 31 can be pulled out from a remote place by pulling the string-like member 32.
In addition, by connecting the other end of the string-like member 32 to the upper holder 20, the operator can draw the string-like member 32 connected to the upper holder 20 without losing sight of the string-like member 32. In this case, the wedge-shaped member 31 can be pulled out, which is effective in improving workability.

[Second Embodiment]
12, 13 and 14 show a second embodiment of the present invention.
This embodiment has the same configuration as the first embodiment except for the lower holder 30. Therefore, different parts will be described below, and duplicate descriptions of the same parts will be omitted.
12, 13, and 14, a connection structure 33 as a lower holder 30 is installed at the lower portion of the guide panel 10. The lower portions of the two adjacent guide panels 10 are connected to each other by the connecting structure 33.

The connection structure 33 includes a hook 331 as a receiving member formed on one frame 11 of the adjacent guide panel 10 and a lever 332 as a connection member formed on the other frame 11 of the adjacent guide panel 10. .
The lever 332 is rotatably supported on the frame 11 by using a bolt 333, and the tip of the lever 332 protrudes from the guide panel 10 by the rotation of the lever 332 and can be connected to the hook 331 of the adjacent guide panel 10.

In this embodiment, when the guide panel 10 is installed, it is accommodated in the surface area of the guide panel 10 (see FIG. 14). Thereby, the guide panel 10 can be installed without the lever 332 interfering with the surroundings.
Next, when the guide panel 10 is installed, the lever 332 is rotated and connected to the hook 331 of the adjacent guide panel 10. Thereby, the lower part of the adjacent guide panel 10 is mutually connected. Each guide panel 10 connected to the lower part is stably supported in a state where it is suspended at a position set by the upper holder 20 (see FIGS. 1 to 3), and guides the heat insulating brick 3 by the inner guide member 12. be able to.
Therefore, the effect similar to 1st Embodiment mentioned above can be acquired also by the guide panel 10 of this embodiment which has the lower holder 30 using such a connection structure 33. FIG.

[Third Embodiment]
FIG. 15 shows a third embodiment of the present invention.
This embodiment has the same configuration as the first embodiment except for the lower holder 30. Therefore, different parts will be described below, and duplicate descriptions of the same parts will be omitted.
In FIG. 15, below the guide panel 10, a castable 5 is filled between the iron skin 2 and the refractory brick 4. In the second and higher layers from the bottom, the castable 5 of the lower layer is already filled. In the case of the lowermost layer, the refractory brick 4 serving as a reference is accurately arranged at the bottom of the furnace, and the castable 5 is filled between the iron shell 2 and the base.
On the upper surface of these castables 5, a step 341 is formed along the inner edge of the furnace, and a groove 34 is formed between the castable 5 and the refractory brick 4. The groove 34 has a groove width in which the lower part of the guide panel 10 can be fitted.

In this embodiment, the lower holder 30 is formed by the groove 34 formed on the upper surface of the castable 5 below the guide panel 10.
Then, by introducing the guide panel 10 into the groove 34 from above, the guide panel 10 is pressed by the castable 5 formed with the step 341 and brought into contact with the outer surface of the refractory brick 4.
Therefore, the effect similar to 1st Embodiment mentioned above can be acquired also by the guide panel 10 of this embodiment which has the lower holder 30 using such a groove | channel 34. FIG.

[Fourth Embodiment]
FIG. 16 shows a fourth embodiment of the present invention.
In the third embodiment described above, the groove 34 formed in the castable 5 as the lower holder 30 is the edge step 341 along the refractory brick 4.
On the other hand, in this embodiment, a groove 34 is formed at an intermediate position between the iron skin 2 and the refractory brick 4 on the upper surface of the castable 5. Further, an extension member 342 is fixed to the frame 11 at the lower part of the guide panel 10. The groove 34 is disposed so that the guide member 12 of the guide panel 10 contacts the refractory brick 4 in a state where the tip of the extension member 342 is inserted into the groove 34.

In this embodiment, the lower holder 30 is formed by the extension member 342 formed on the guide panel 10 and the groove 34 formed on the upper surface of the castable 5 below the extension member 342.
Then, by introducing the extension member 342 into the groove 34 from above, the guide panel 10 is pressed and brought into contact with the furnace outer surface of the refractory brick 4.
Therefore, the effect similar to 1st Embodiment mentioned above can be acquired also by the guide panel 10 of this embodiment which has the lower holder 30 using such an extending member 342 and the groove | channel 34. FIG.

[Modification]
It should be noted that the present invention is not limited to the above-described embodiment, and modifications and the like within a scope that can achieve the object of the present invention are included in the present invention.
For example, each member quality of the guide panel 10 is not limited to the above-described embodiment, and may be appropriately changed as long as an intended function is obtained.

Moreover, you may change suitably the installation position and number of the upper holder 20 and the lower holder 30, the dimension of the flame | frame 11, the number of lattices, etc. FIG.
Further, the guide panel 10 is not limited to the frame 11 with the guide member 12 stretched, and the frame 11 may be omitted when the guide member 12 is designed to have rigidity.
In other words, in the above-described embodiment, the guide member 12 is attached to the surface of the frame 11 to reduce the weight while securing the strength against deformation. On the other hand, the guide panel 10 may be configured with only the guide member 12 without using the frame 11.

In the upper holder 20, the connection member 21 is not limited to a magnet, and a suction cup or the like may be used. The adjusting mechanism 22 can be changed to another mechanism that can be fixed while being relatively displaced.
The lower holder 30 is not limited to the structure in which the wedge-shaped member 31 is driven, and an airbag that is inflated by the supply of pressurized air or two members that are displaced by a motor may be used. In short, any pressing member may be used as long as it is interposed in the space between the guide panel 10 and the iron shell 2, urges the lower part of the guide panel 10 in a direction away from the iron shell 2, and presses the insulating brick 3.
Further, the mechanism is not limited to pressing the lower portion of the guide panel 10, and a mechanism similar to the upper holder 20 described above may be used as the lower holder 30.

  INDUSTRIAL APPLICABILITY The present invention can be used as a method for constructing a vertical kiln and a guide panel, and in a vertical kiln such as a hot stove or CDQ, when a fixed refractory such as a refractory brick or a heat-insulating brick is installed inside the iron shell. Available to:

DESCRIPTION OF SYMBOLS 1 ... Furnace body 2 ... Iron skin 3 ... Heat insulation brick 4 ... Fire brick 5 ... Castable 6 ... Scaffold 10 ... Guide panel 11 ... Frame 12 ... Guide member 20 ... Upper holder 21 ... Connection member 22 ... Adjustment mechanism 220 ... Shaft part 221 ... male screw shape 222, 223 ... clamping member 224, 225 ... nut 30 ... lower holder 31 ... wedge-like member 311, 312 ... abutting surface 32 ... string-like member 33 ... coupling mechanism 331 ... hook 332 ... receiving member Lever 333... Bolt 34 serving as a rotating shaft... Groove 341.

Claims (11)

A method for constructing a vertical kiln having an iron skin, a castable installed inside the iron skin, and a shaped refractory installed inside the castable,
A guide panel is installed along the furnace inner surface of the iron skin, the furnace inner surface of the guide panel is positioned at a predetermined furnace position, and the fixed refractory is installed along the furnace inner surface of the guide panel. A method for constructing a vertical kiln, wherein the guide panel is removed, and the castable is installed at an interval between the fixed refractory and the iron skin. In the method of building a vertical kiln according to claim 1,
A vertical kiln characterized by repeating the installation of the guide panel, the installation of the fixed refractory material along the guide panel, the removal of the guide panel, and the installation of the castable for each layer of a predetermined height How to build a furnace. In the method for constructing a vertical kiln according to claim 1 or 2,
A method of constructing a vertical kiln, characterized in that, when the guide panel is installed in an upper level, a lower part of the guide panel is brought into contact with an outer peripheral surface of the shaped refractory in a lower level. A guide panel used in a method for constructing a vertical kiln having an iron skin, a castable installed inside the iron skin, and a fixed refractory installed inside the castable,
A guide member with which the fixed refractory material comes into contact; and an upper holder that supports an upper portion of the guide member;
The upper holder includes a connection member connectable to the furnace inner surface of the iron shell, and an adjustment mechanism that supports the guide panel and can be adjusted in position with respect to the connection member. . In the guide panel according to claim 4,
The guide panel further comprises a lower holder for supporting a lower portion of the guide member. In the guide panel according to claim 5,
The guide panel according to claim 1, wherein the lower holder is a pressing member that urges the guide member to a side away from the iron skin. In the guide panel according to claim 6,
The pressure member includes a wedge-shaped member made of a synthetic resin material and a string-shaped member that connects the wedge-shaped member to an upper portion of the guide member. In the guide panel according to claim 5,
The guide panel, wherein the lower holder is a connection mechanism that connects lower portions of the adjacent guide members. The guide panel according to claim 8,
The connection mechanism includes a receiving member formed on one of the adjacent guide members, and a connecting member formed so as to protrude and retract on the other of the adjacent guide members and connectable to the receiving member. And a guide panel. In the guide panel according to claim 5,
The guide panel according to claim 1, wherein the lower holder is a groove formed on an upper surface of the castable filled in a lower layer than the lower holder and into which a lower portion of the guide member can be inserted. The guide panel according to claim 10,
The guide panel according to claim 1, wherein the groove is formed in a step shape along a side edge of the upper surface of the castable that is away from the iron skin.

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