JP6768237B2 - Ceramic fiber block and its manufacturing method - Google Patents

Description

The present invention relates to a ceramic fiber block used as a heat insulating material by being attached to a furnace wall of various industrial furnaces such as a heating furnace, a heat treatment furnace, and a firing furnace, and a method for manufacturing the same.

In general, ceramic fibers as a heat insulating material are lined (also called lining) on the furnace walls of various industrial furnaces such as heating furnaces and heat treatment furnaces in the metal industry and chemical industry, and firing furnaces in the ceramic industry. It has been. A block construction method is known as a lining construction method for the ceramic fiber. In this block method, ceramic fibers having a blanket shape are cut into a plurality of strips having the same shape and laminated to form a substantially rectangular parallelepiped laminated body, or ceramic fibers having a long blanket shape are used. This is a construction method in which a so-called ceramic fiber block formed by continuously folding the same length in the longitudinal direction into a laminated body having a substantially rectangular parallelepiped shape is fixed to a casing of a furnace wall with mounting brackets.

In this block method, a mounting bracket is often built in the ceramic fiber block in order to facilitate the construction method. The mounting bracket in this case is generally composed of a laminated body support rod and a support rod holding member. The former laminate support rod has a role of supporting the laminate, while the latter support rod holding member holds the laminate support rod and is attached to the casing of the furnace wall by welding or the like. It has a role of engaging with the engaging portion of the furnace wall, whereby the ceramic fiber block can be fixed to the casing of the furnace wall.

For example, in Patent Document 1, two laminated body support rods are penetrated in a direction orthogonal to the laminated surface of the ceramic fiber block, and these two laminated body support rods are penetrated through a pair of support rod holding members. The ceramic fiber block is attached to the furnace wall by inserting it into the hole and attaching a rectangular mounting member to be erected on these pairs of support rod holding members to the support member having an L-shaped cross section provided in advance on the furnace wall. The technique of fixing is disclosed.

Further, in Patent Document 2 and Patent Document 3, in a block-shaped laminate formed by continuously folding a long ceramic fiber blanket by the same length in the longitudinal direction into a continuous fold shape, one of the bent sides A plurality of laminate support rods are sandwiched inside the plurality of bent portions along the creases, and the ceramic fiber blanket is penetrated through the substantially central portion of each laminate support rod so as to project to the outside of the laminate. A technique is disclosed in which a bifurcated tab is provided, and the bifurcated tab is inserted into a slit of a substantially rectangular support rod holding member and then fixed by bending the tip portion.

Japanese Patent No. 2542258 Special Publication No. 57-020553 Japanese Patent No. 6287383

The technique of Patent Document 1 described above applies to both ceramic fiber blocks of a laminated body in which a large number of strip-shaped ceramic fiber blankets are stacked as described above and a laminated body in which a long ceramic fiber blanket is continuously folded. It has the advantage of being adaptable. In either case, the laminate support rod is located on the side closer to the thermal surface as a whole, so it is easily affected by heat. To make it less susceptible to this heat, the laminate support rod should be fired as much as possible. It is preferably placed closer to the wall casing. However, if the position of the laminated body support rod is too close to the casing side of the furnace wall, the distance of the portion that holds the laminated body by the laminated body support rod becomes short. As a result, vibration or the like is likely to occur in the penetrating portion of the laminate support rod in the laminate, and this damage is caused to the entire holding portion of the laminate sandwiched between the laminate support rod and the support rod holding member. At that point, there was a risk that the laminate of ceramic fiber blocks would fall off.

On the other hand, in Patent Document 2 and Patent Document 3, since a laminate in which a long ceramic fiber blanket is continuously folded is targeted, the ceramic fiber blanket is partially folded in the thickness direction by the laminate support rod. The position of the laminate support rod can be brought closer to the casing side while being compressed and supported. Therefore, it has an advantage that it is not easily damaged even if there is vibration or the like.

However, in Patent Document 2 and Patent Document 3, the method of fixing the laminated body support to the support rod holding member using the bifurcated tab is a bifurcated tab in which a strip-shaped metal piece is wound around the support rod at the center in the longitudinal direction thereof. Since it is necessary to form a strip of metal or to bend a strip-shaped metal piece and fix it to a laminate support rod with a screw, the work becomes complicated and a certain amount of skill is required. Further, since the tip of the bifurcated tab becomes a sharp protrusion and protrudes from the laminated body, there is a risk of injury during the assembling work. The present invention has been made in view of the above-mentioned problems of the conventional ceramic fiber block, and an object of the present invention is to provide a ceramic fiber block that can be safely and easily attached.

In order to achieve the above object, the ceramic fiber block provided by the present invention includes a laminate in which a long blanket made of ceramic fibers is continuously folded by the same length in the longitudinal direction, and the laminate is used as a furnace. A ceramic fiber block composed of mounting brackets to be fixed to a wall, wherein the laminated body extends in the laminating direction on one of two surfaces located on opposite sides of each other composed of a plurality of bent portions. Two notches with a depth of 1.0 to 2.0 times the thickness of the blanket are provided, and the mounting bracket is provided at least at both ends of the plurality of bent portions on one surface. A plurality of laminated body support rods sandwiched inward along creases and the plurality of laminated body support rods partially inserted into the notches of the two rows are held and engaged with the furnace wall. It is characterized in that it is composed of a support rod holding member.

Further, the method for manufacturing a ceramic fiber block provided by the present invention is a method for manufacturing a ceramic fiber block including a laminate made of a ceramic fiber blanket and a mounting bracket for fixing the laminate to a furnace wall, and is long. After the ceramic fiber blanket having the same shape is continuously folded in the longitudinal direction by the same length to form a laminated body, one of the surfaces of the laminated body located on opposite sides of each other composed of a plurality of bent portions. In the first step of providing two notches extending in the stacking direction and having a depth of 1.0 to 2.0 times the thickness of the blanket, and the mounting bracket in the two notches. A second step of inserting a pair of rectangular plate-shaped members constituting the above, and a plurality of laminates constituting the mounting bracket, respectively, along the creases inside at least both end portions of the plurality of bent portions on one surface. The feature is that the support rod is sandwiched and the third step is to insert the support rod into a plurality of through holes formed in advance in each of the pair of rectangular plate-shaped members.

According to the present invention, the ceramic fiber block can be safely and easily attached to the cage of the furnace wall.

It is a perspective view of the ceramic fiber block of embodiment of this invention. It is an exploded perspective view of the ceramic fiber block of FIG. It is a perspective view which shows various specific examples of the laminated body support rod which the ceramic fiber block of FIG. 1 has. It is a perspective view which shows the laminated body used in Reference Example 1 and 2.

Hereinafter, the ceramic fiber block according to the embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the ceramic fiber block according to the embodiment of the present invention includes a substantially rectangular parallelepiped laminated body 1 in which a long ceramic fiber blanket is continuously folded, and a furnace wall in which the laminated body 1 is not shown. It is composed of a mounting bracket 2 to be fixed to. The folding method of the laminated body 1 is not particularly limited, but it is preferable to fold the long ceramic fiber blanket so that both ends in the longitudinal direction are located on the furnace wall side. As a result, it is possible to prevent the so-called joint opening, in which the joints gradually open during use and the heat insulating performance deteriorates, to occur.

The ceramic fiber used as the material of this ceramic fiber blanket is not particularly limited, and artificial mineral fibers mainly composed of general ceramics such as alumina (Al ₂ O ₃ ) and silica (SiO ₂ ) may be preferably used. it can. Examples of such ceramic fibers include alumina-silica fibers, alumina-silica-zirconia fibers, alumina-silica-chromia fibers, mullite fibers, alumina fibers, and biosoluble fibers. In the present invention, a material obtained by matting such ceramic fibers is referred to as a ceramic fiber blanket. In the ceramic fiber block of the embodiment of the present invention, a long ceramic fiber blanket is used, and the long ceramic fiber blanket is continuously folded by the same length in the longitudinal direction to form the above-mentioned laminate 1.

As shown in FIG. 2, the laminate 1 formed of the ceramic fiber blanket has the A-side side of the two opposite-sided A-sides and B-sides composed of the plurality of bent portions 1a and 1b. In the above, two cut portions C extending in the stacking direction (that is, the direction perpendicular to the stacking surface) are provided. These two cut portions C are from one end to the other end of the plurality of bent portions 1a (seven bent portions 1a extending in parallel with each other in FIG. 2) extending in parallel on the A surface side. Has been cut into. Further, these two cuts C are cut so as to have a depth of 1.0 to 2.0 times the thickness of the ceramic fiber blanket. A pair of rectangular plate-shaped members constituting the support rod holding member described later is inserted into the cut portion C. Since the blanket thickness is generally about 15 to 30 mm, if the depth of the cut portion C is less than 1.0 times the thickness of the ceramic fiber blanket, the laminated body 1 will be used with the laminated body support rod described later. On the contrary, if it exceeds 2.0 times, it becomes easy for the laminated body 1 to crack from this cut portion C as a starting point, and when it is heated, it becomes difficult to hold it securely without damaging it. In addition, the temperature of the mounting bracket 2 tends to rise to near the heat resistant temperature of the steel material, and as a result, thermal deterioration may be accelerated or the temperature may be softened by heat and plastically deformed, which is not preferable.

On the other hand, the mounting bracket 2 includes at least two laminated body support rods 10 sandwiched inside at least both ends of the plurality of bent portions 1a on the A-side side along the creases, and the above-mentioned laminate. It is composed of a support rod holding member 20 that is partially inserted into the cut portion C of the body 1 to hold the plurality of laminated body support rods 10 and engages with an engaging portion of a furnace wall (not shown). Specifically, in the ceramic fiber block of the embodiment of FIG. 1, among the seven bent portions 1a on the A side, every other laminated body support rod 10 is sandwiched inside in addition to both ends. The total number of laminated body support rods 10 is four.

Since these four laminated body support rods 10 are located inside the furnace rather than the furnace wall, it is preferable to use a heat-resistant member, and for example, heat-resistant metals such as SUS304, SUS316, and SUS310S are preferable. Alternatively, a ceramic sintered body made of alumina or the like may be used in order to more reliably suppress plastic deformation due to heat. When each of these laminated body support rods 10 is sandwiched in the bent portion 1a of the laminated body 1, they are preferably about 5 to 25 mm inward from both ends in the width direction of the ceramic fiber blanket, and more preferably. It is preferable that both ends of the laminate support rod 10 are located inside about 10 to 15 mm. That is, the length of these laminated body support rods 10 is preferably 10 to 70 mm, more preferably 30 to 50 mm shorter than the width of the ceramic fiber blanket. In the embodiment of the present invention, the width of the ceramic fiber blanket is about 200 to 600 mm, so that the length of the laminate support rod 10 is preferably about 170 to 570 mm.

If the distance between both ends of the laminated body support rod 10 and both ends of the ceramic fiber blanket in the width direction is shorter than 10 mm, heat invades from the gap when a gap is generated in the laminated body 1 due to heat shrinkage or the like. This may accelerate the thermal deterioration of the laminated body support rod 10 or may cause the laminate support rod 10 to be softened by heat and plastically deformed. On the contrary, if this distance is longer than 30 mm, the weight of the laminated body 1 becomes large in the case of a thick laminated body, so that the shape of the laminated body 1 may be deformed by the weight of the laminated body 1. The thickness of the laminated body support rod 10 is not particularly limited, but is preferably about φ3 to φ10 mm.

It is preferable that each of the laminated body support rods 10 is provided with a retaining tool at the center. That is, as will be described later, in the ceramic fiber block of the embodiment of the present invention, each laminated body support rod 10 is held by the support rod holding member 20 at two places in the central portion, and therefore, between these two holding parts. It is possible to prevent the problem that the laminated body support rod 10 comes off due to the vibration of the heating furnace or the like by providing the retaining tool.

The structure of the retaining tool is not particularly limited, but when the laminated body support rod 10 is made of metal, for example, as shown in FIG. 3A, the strip-shaped metal piece 11 is placed at the center of the laminated body support rod 10. It may be welded or screwed to the portion and wound around about half a circumference, or as shown in FIG. 3 (b), the strip-shaped metal piece 12 is wound around the central portion of the laminate support rod 10 all around the metal piece. The ends of the twelve may be welded or screwed together. Alternatively, as shown in FIG. 3C, the strip-shaped metal piece 13 having one end bent may be welded or screwed to the central portion of the laminate support rod 10. Further, as shown in FIG. 3D, the convex protrusion 10a may be formed by pressing the central portion of the laminated body support rod 10. When the laminated body support rod 10 is a round rod made of a ceramic sintered body, a tape may be wound around the central portion thereof.

Since the support rod holding member 20 for holding the four laminated body support rods 10 is located inside the furnace rather than the furnace wall, it is preferable to use a heat-resistant member, for example, heat-resistant metals such as SUS304, SUS316, and SUS310S. It is preferable to use. The support rod holding member 20 is a pair of rectangular plate-shaped members 21 facing each other, which are inserted into the two cut portions C of the laminated body 1, and the above-mentioned pair of rectangular plate-shaped members 21. It is composed of a substantially rectangular erection member 22 that connects the ends on the side opposite to the side to be inserted into the cut portion C. The support rod holding member 20 is formed by bending one rectangular plate-shaped member at two points to form a substantially gate shape or a substantially U-shaped cross section, thereby forming the above-mentioned pair of rectangular plate-shaped members facing each other. The support rod holding member 20 composed of the 21 and the erection member 22 may be formed, or the support rod holding member 20 may be joined to the pair of opposing rectangular plate-shaped members 21 by welding or the like. It may be formed.

Each of the pair of rectangular plate-shaped members 21 is provided with four through holes 21a for inserting and holding the laminated body support rod 10 at regular intervals in the longitudinal direction. .. The through holes 21a are not limited to the four, and can be set arbitrarily. Further, the shape of the through hole 21a is not particularly limited, and various shapes such as a circular shape, an elliptical shape, and a polygonal shape can be used.

On the other hand, at the substantially central portion of the erection member 22 constituting the support rod holding member 20, one or more through holes 22a through which a support tool for fixing to the furnace wall is inserted is provided in advance in the casing of the furnace wall. It can be fixed with a nut by inserting an engaging part such as an attached stud. As shown in FIG. 4, in the pair of rectangular plate-shaped members 21, the edges of the laminated body 1 opposite to the side to be inserted into the cut portion C, for example, toward the inside facing each other. A bent portion 21b that bends may be provided. As a result, it becomes possible to attach the plurality of ceramic fiber blocks one by one to the rail-shaped metal fixture having a substantially Ω-shaped cross section provided on the furnace wall side while sliding them.

As described above, in the ceramic fiber block of the embodiment of the present invention, by using the mounting bracket 2 having the above structure, even if the thickness of the laminated body in the stacking direction becomes thick and its own weight increases, the laminated body support rod 10 Since the number of the support rods can be increased to disperse the load and the support rod holding member 20 can be supported by each of the laminated body support rods 10 at two points in the center thereof, the laminated body can be formed from the support rod holding member 20. The length to the tip of the support rod 10 can be shortened, and thus the load can be further suppressed. As a result, even if the laminate support rod 10 is softened by heat, plastic deformation is less likely to occur in the laminate support rod 10, and thus the problem of the laminate 1 falling off due to the deformation of the laminate support rod 10 can be prevented. Further, when a ceramic sintered body is used, it is supported at two points, so that there is an advantage that it is hard to break.

Next, the method for manufacturing the ceramic fiber block according to the embodiment of the present invention described above will be described. First, as a first step, a long blanket made of ceramic fibers is folded by the same length in the longitudinal direction to form a substantially rectangular parallelepiped laminated body 1. At that time, both ends of the long blanket in the longitudinal direction are folded so as to be located on the A-plane side facing the furnace wall. Then, in the laminated body 1, it extends in the laminating direction to the A-plane side of the A-plane and the B-plane located on opposite sides of the plurality of bent portions 1a and 1b, and is larger than the thickness of the blanket. A deep two-row notch C is provided. The surface A provided with the cut portion C is a surface facing the casing surface of the furnace wall.

Next, as a second step, a pair of rectangular plate-shaped members 21 constituting the support rod holding member 20 are inserted into the cut portion C. A plurality of through holes 21a are perforated in each of the pair of rectangular plate-shaped members 21 so as to correspond to the positions where the plurality of laminated body support rods 10 extend. Further, using a rectangular erection member 22 having a through hole 22a in the central portion, these pairs of rectangular plate-shaped members 21 are joined to each other by welding, for example.

Next, as a third step, a plurality of laminated body support rods 10 are inserted along the creases inside at least both end portions of the plurality of bent portions 1a on the A surface side. As a result, the laminated body support rod 10 is inserted into the through hole 21a of the pair of rectangular plate-shaped members 21 described above. In addition, each laminated body support rod 10 may be provided with a retaining tool as shown in FIG. 3 in advance in the central portion. As a result, the laminated body support rod 10 can be fixed to the laminated body 1 so as not to move. After that, the laminated body 1 is compressed in the folded direction so as to have a specified size, and packed with a band or the like.

As described above, the method for manufacturing the ceramic fiber block of the present invention allows the work to proceed without unfolding the folded laminate, so that it can be easily manufactured and is sharp to the mounting bracket like the conventional ceramic fiber block. Since no protrusions are used, it is possible to work safely without involving dangerous work. Further, since the erection member constituting the support rod holding member may be provided with one or more through holes at various positions through which the support tool for fixing to the furnace wall is inserted, the ceramic fiber block can be provided in various shapes. It can be freely attached to the furnace wall of.

That is, in the conventional ceramic fiber block using the bifurcated tab for fixing the laminated body support rod, it is necessary to bend the tip of the bifurcated tab, so that the erection member in the support rod holding member is the bent portion of the bifurcated tab. Will be covered with. Therefore, the position of the through hole through which the support tool for fixing to the furnace wall is inserted is substantially limited to the central position in the longitudinal direction of the support rod holding member. As a result, when it became necessary to fix the furnace wall at a position deviated from the center position, it was necessary to separately attach a special jig.

Further, in the conventional method using the bifurcated tab, if the bifurcated tab wound around the laminate support rod is pulled excessively, the ceramic fiber blanket may be excessively compressed in the thickness direction and damaged. .. On the other hand, in the ceramic fiber block of the embodiment of the present invention, since through holes are pre-drilled at fixed positions of a pair of rectangular plate-shaped members constituting the support rod holding member, the laminated body support rod is made of ceramic. The fiber blanket will not be over-compressed and damaged in its thickness direction. Further, if necessary, by providing a retaining tool at the center of the laminated body support rod, the laminated body support rod is inserted into the through hole of the pair of rectangular plate-shaped members, and then the laminated body is subjected to the said. Since the retaining tool can be hooked, the laminated body support rod does not fall out of the laminated body.

[Example]
As shown in FIG. 1, a ceramic fiber block composed of a laminate 1 in which a long ceramic fiber blanket is continuously folded by the same length in the longitudinal direction thereof, and a mounting bracket 2 for fixing the laminate to the furnace wall. 10 pieces were prepared, and these were attached to a rail-shaped metal fixture provided in advance on the furnace wall. For the above-mentioned long ceramic fiber blanket, an isowool blanket manufactured by Isolite Industries Co., Ltd. made of alumina-silica fiber having a thickness of 25 mm and a width of 300 mm was used.

The above-mentioned long ceramic fiber blanket is folded by 100 mm so that both ends in the longitudinal direction are located on the furnace wall side and the number of bent portions 1b on the opposite side to the furnace wall side is eight. , A block-shaped laminated body 1 having a length of 300 mm, a width of 300 mm, and a height of 100 mm in the stacking direction was prepared. In the center of the seven bent portions 1a on the furnace wall side of the laminated body 1 in the width direction, two cut portions C having a depth of 35 mm extending in the laminated direction and separated from each other by 40 mm were inserted.

On the other hand, as the rectangular plate-shaped member 21 for the support rod holding member 20 to be inserted into the notch C of the two articles, two rectangular metal plates made of SUS304 having a height of about 50 mm and a length of about 250 mm were prepared, and each of them was prepared. The end on the side opposite to the side to be inserted into the notch C was bent. Then, as an erection member 22 for connecting these two metal plates, one rectangular metal plate made of SUS having a width of about 100 mm and a length of about 250 mm is prepared, and about 19 mm in the longitudinal direction is prepared at the center in the width direction. After 13 through holes having an inner diameter of 10 mm were drilled at a pitch, both sides in the width direction were bent to form a U-shaped cross section.

The two rectangular plate-shaped plates for the support rod holding member 20 were overlapped and welded to the U-shaped facing portions in the cross section so that the bent portion was on the inside. Then, seven elongated holes having a length of 18 mm and a width of 6 mm were drilled in each of the two overlapping opposed portions to be inserted into the cut portion C at a pitch of about 38 mm in the longitudinal direction. The support rod holding member 20 produced in this manner was inserted into the cut portion C of the above-mentioned laminated body 1.

Next, of the seven bent portions 1a on the furnace wall side of the laminated body 1, SUS304 outer diameters of 5 mm were formed inside both ends and a total of four bent portions inside the two bent portions, along the creases. Four laminated body support rods 10 having a length of 250 mm were inserted. At that time, since the support rod holding member 20 is inserted into the cut portion C of the laminated body 1 as described above, the above four are inserted into four of the seven elongated holes provided in each of the facing portions. It was possible to insert the laminated body support rods 10 of the above.

Each of these four laminated body support rods 10 is provided with a metal piece made of SUS304 having a width of about 7 mm and a length of about 14 mm in which one end in the longitudinal direction is bent by 45 ° as a retaining tool at the center thereof. Since the metal pieces were joined by spot welding so that the longitudinal direction coincided with the extending direction of the laminated body support rod 10, this metal piece was attached to the laminated body 1 when the laminated body support rod 10 was inserted into the laminated body 1. The metal piece was turned downward so as not to be caught, and after the insertion, the laminated body support rod 10 was rotated 180 ° about its central axis so that the metal piece was caught inside the bent portion of the laminated body 1.

The ten ceramic fiber blocks produced in this manner are slid and installed one by one on a rail-shaped metal fixture having a substantially Ω-shaped cross section, which is previously attached to the furnace wall of the heating furnace, and are attached to the erection member 22. A bolt was inserted into one of the 13 through holes provided and fixed. The time required to attach these 10 ceramic fiber blocks to the furnace wall was about 30 minutes, and the installation work could be completed easily and in a short time.

[Reference example 1]
Instead of using the laminated body 1 having two cut portions C having a depth of 35 mm, three laminated bodies 101a to 101a to c as shown in FIG. 4 completely cut at the cut position are cut into the cut surface. Ten ceramic fiber blocks were produced in the same manner as in the above embodiment, except that the laminates 1 were brought into contact with each other to have the same shape as the laminated body 1 of the embodiment as a whole, and the furnace wall of the heating furnace was similarly prepared. Attached to. At that time, only four laminate support rods 10 are inserted into the two laminates 101a and 101c on both sides of the three laminates 101a to 101c, and they engage with the retaining tool. Since it was not done, the trouble that these two on both sides came off frequently occurred during the installation work, and the installation work took time and effort. Therefore, it took about 1 hour to attach these 10 ceramic fiber blocks to the furnace wall.

[Reference example 2]
When the three completely cut laminates 101a to 101c are brought into contact with each other to form the same shape as the laminate 1 of the embodiment as a whole, the corresponding contact is made except for the portion where the support rod holding member 20 is inserted. Ten ceramic fiber blocks were produced in the same manner as in Reference Example 1 above, except that the three laminated bodies 101a to 101c were integrated by applying an adhesive to the portion, and were used on the furnace wall of the heating furnace. I installed it. In this case, the time required for the installation work was about 30 minutes as in the example, but since the work of applying the adhesive and integrating the pieces is required, the ceramic fiber block can be manufactured as compared with the example. took time. In addition, since an adhesive for adhering the ceramic fiber is required separately, the cost is increased accordingly.

1, 101a to c Laminated body 1a, 1b Bent part 2 Mounting bracket 10 Laminated body support rod 20 Support rod holding member 21 Rectangular plate-shaped member 22 Erecting member C Notch

Claims (6)

A ceramic fiber block comprising a laminate in which a long blanket made of ceramic fibers is continuously folded by the same length in the longitudinal direction thereof, and a mounting bracket for fixing the laminate to the furnace wall. The laminate extends in the stacking direction on one of the two oppositely located surfaces composed of the plurality of bends and has a depth of 1.0 to 2.0 times the thickness of the blanket. Two notches are provided, and the mounting bracket is formed by a plurality of laminated body support rods sandwiched inside at least both ends of the plurality of bent portions on one surface along the creases. , A ceramic fiber block comprising a support rod holding member that is partially inserted into the cut portion of the two articles to hold the plurality of laminated body support rods and engages with the furnace wall. The support rod holding member is a pair of heat-resistant metal rectangular plate-shaped members that are inserted into the two notches, and a heat-resistant metal erection member that is bonded to the pair of rectangular plate-shaped members. consists of a, for the installation member, characterized in that through-holes for inserting the engaging member into engagement with the furnace wall is provided one or more, ceramic fiber block according to claim 1. The ceramic fiber block according to claim 1 or 2, wherein the laminated body support rod is a heat-resistant metal or a ceramic sintered body. The ceramic fiber block according to any one of claims 1 to 3, wherein the length of the laminated body support rod is 10 to 70 mm shorter than the width of the long blanket. The aspect according to any one of claims 1 to 4, wherein the laminated body is folded so that both ends in the longitudinal direction of the elongated blanket are located on the furnace wall side. Ceramic fiber block. It is a method of manufacturing a ceramic fiber block consisting of a laminate made of a ceramic fiber blanket and a mounting bracket for fixing the laminate to a furnace wall, and the long ceramic fiber blanket is provided with the same length in the longitudinal direction. After being continuously folded to form a laminated body, it extends in the stacking direction on one of the surfaces of the laminated body located on opposite sides of each other and is composed of a plurality of bent portions, and has a thickness of 1 of the blanket. The first step of providing two notches with a depth of .0 to 2.0 times, and the second step of inserting a pair of rectangular plate-shaped members constituting the mounting bracket into the two notches. A plurality of laminated body support rods constituting the mounting bracket are sandwiched inside at least both end portions of the plurality of bent portions on one surface, and the pair of rectangular plate-shaped members are formed. A method for manufacturing a ceramic fiber block, which comprises a third step of inserting into a plurality of through holes formed in advance of each.

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