TW201400781A - Heating furnace ceiling unit, method for producing heating furnace ceiling unit, heating furnace, and method for producing heating furnace - Google Patents

Abstract

To provide a heating furnace ceiling unit that exhibits high rigidity and high durability, and does not increase the production cost or complicate the production process even when producing a large heating furnace. A heating furnace ceiling unit that includes an inner wall layer that is formed by juxtaposing a plurality of inorganic fiber blocks, a heat insulator layer that is stacked on the inner wall layer, a top plate that is stacked on the heat insulator layer, a suspension member that extends through the heat insulator layer, one end of the suspension member being secured on the top plate, and an opposite end of the suspension member being positioned in the inner wall layer, and a core member that is inserted into the inorganic fiber block in a transverse direction, and connected to the opposite end of the suspension member that is positioned in the inorganic fiber block, one or more core members being provided in each inorganic fiber block.

Description

Ceiling unit for heating furnace, method for manufacturing ceiling unit for heating furnace, heating furnace, and method for manufacturing heating furnace

The present invention relates to a ceiling unit for a heating furnace, a method for producing a ceiling unit for a heating furnace, a heating furnace, and a method for producing the heating furnace.

In recent years, with the spread of lithium ion batteries and the like, the chance of calcining an electrode material or a member containing a large amount of an alkali metal such as Li is increasing, but if a vapor of an alkali metal such as Li reaches a specific temperature region, it reacts with Si, and thus melts. It belongs to the refining brick of the calcining furnace material, which leads to the reduction of the peeling or strength of the refining brick material and the reduction of the fire resistance and heat insulation.

Therefore, there is proposed a calciner having a ceiling unit in which a heat-resistant ceramic plate is sandwiched between a rigid beam and an alumina plate by a rigid beam suspended between the side walls (for example, refer to Patent Document 1) ).

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2008-45816

However, in recent years, the amount of processing of the electrode material accompanying the object to be calcined The increase or the enlargement of the components also tends to increase the size of the calciner. In order to increase the size of the calciner described in Patent Document 1, the rigid beam or the ceramic plate constituting the ceiling unit must be specially manufactured and provided as a large one, which causes an increase in the manufacturing cost of the calciner, and the weight of the rigid beam or the ceramic plate is increased. The operability is lowered, resulting in a complicated manufacturing process.

Further, in the calcining furnace described in Patent Document 1, the ceiling unit is suspended by the rigidity of the rigid beam and the shape thereof is maintained. When the ceiling unit is increased in size, the weight thereof is also increased, so that the ceiling unit is curved and it is difficult to maintain its shape. .

Further, in the ceiling unit constituting the baking furnace described in Patent Document 1, the end portion of the alumina plate or the suspension member sandwiching the ceramic plate is exposed to the heating chamber, so that thermal deterioration is likely to occur and the peeling resistance is inferior.

Therefore, an object of the present invention is to provide a ceiling unit for a heating furnace which has high rigidity and durability without causing an increase in manufacturing cost or a complicated manufacturing step even when the size of the heating furnace is increased. A method of manufacturing the ceiling unit for a heating furnace, and a method of manufacturing a heating furnace and a heating furnace using the ceiling unit described above.

In order to achieve the above object, the inventors of the present invention have conducted intensive studies and found that the above-described method can be achieved by a ceiling unit for a heating furnace, a method for manufacturing the ceiling unit, a heating furnace using the ceiling unit, and a heating furnace. A ceiling unit for a heating furnace has an inner wall layer formed by arranging a plurality of inorganic fiber blocks in parallel, and a heat insulating material layer on which the layer is disposed on the inner wall layer; The laminated member is disposed on the heat insulating material layer; the hanging member has one end fixed to the top plate, the other end penetrates the heat insulating material layer and extends into the inorganic fiber block; and the core member crosses the inorganic substance Inserted in the direction of the fiber block and combined with the insertion The end portion of the suspension member in the inorganic fiber block is provided in one or more inorganic fiber blocks, and the present invention has been completed based on the above findings.

That is, the present invention provides: (1) A ceiling unit for a heating furnace, comprising: an inner wall layer formed by arranging a plurality of inorganic fiber blocks in parallel; and a heat insulating material layer in which a layer is disposed Formed on the inner wall layer; the top plate is laminated on the heat insulating material layer; the suspension member has one end fixed to the top plate, and the other end penetrates the heat insulating material layer and extends into the inorganic fiber block And a core member inserted in a direction transverse to the inorganic fiber block, and bonded to an end portion of the suspension member inserted into the inorganic fiber block, and more than one in each inorganic fiber block (2) The ceiling unit for a heating furnace according to the above (1), wherein the inorganic fiber block system is formed by compressing in a lamination direction in a state in which a plurality of inorganic fiber aggregates are laminated, the inner wall layer A plurality of inorganic fiber blocks are formed in parallel so that the main surfaces of the inorganic fiber aggregates constituting the adjacent inorganic fiber blocks are arranged in parallel; (3) heating as in the above (1) or (2) In the above-mentioned inorganic fiber agglomerate system, the heat-resistant inorganic fiber having an alumina content of 45 mass% or more is mainly composed of fibers; (4) heating according to any one of the above (1) to (3) A ceiling unit for a heating furnace according to any one of the above (1) to (4), wherein the above-mentioned partition is provided. At least a part of the hot material layer is composed of a heat insulating material having a thermal conductivity of 0.02 to 0.09 W/(K ‧ m) or less at 800 ° C; (6) A method of manufacturing a ceiling unit for a heating furnace, comprising the method of manufacturing a ceiling unit for a heating furnace according to any one of the above (1) to (5), comprising the step of: forming a block from an inorganic fiber Inserting one end of the suspension member into a plurality of inorganic fiber blocks in the main surface side; inserting more than one core member in a direction transverse to the inorganic fiber block, and bonding the same to the above An end portion of the suspension member in the inorganic fiber block; a heat insulating material layer is formed on the top plate to form a heat insulating material layer; and the other end of the hanging member is inserted and penetrated through the heat insulating material layer, and then fixed The treatment of the top plate forms an inner wall layer in which a plurality of inorganic fiber blocks are arranged side by side on the heat insulating material layer; (7) a method for manufacturing a ceiling unit for a heating furnace, which manufactures the above (1) to (5) The method for a ceiling unit for a heating furnace according to any one of the preceding claims, comprising: a step of fixing one end portion of each of the plurality of suspension members with respect to a main surface of the top plate; and fixing to the top plate a step of inserting a heat insulating material at the other end of the hanging member and passing it to form a heat insulating material layer on the top plate; and repeatedly performing the following treatment: inserting the inorganic material at the other end of the hanging member fixed to the top plate After the fiber block body, one or more core members are inserted in a direction transverse to the inorganic fiber block body, and are joined to the end portions of the suspension member, thereby forming a plurality of parallel rows on the heat insulating material layer a step of forming an inner wall layer of an inorganic fiber block; (8) a heating furnace characterized by having a bottom wall, a side wall erected on the bottom wall, and the above-mentioned (1) placed on the side wall The ceiling unit for a heating furnace according to any one of (5), wherein the heating chamber is defined as being disposed inside by arranging the inner wall layer and the bottom wall of the ceiling unit for the heating furnace; (9) A method of producing a heating furnace, which is characterized in that the method of manufacturing the heating furnace of the above (8), comprising the steps of: providing a side wall in such a manner that the bottom wall is erected; and placing the above-mentioned side wall The step of the ceiling unit for a heating furnace according to any one of (1) to (5).

According to the present invention, it is possible to provide a ceiling unit for a heating furnace which has high rigidity and durability without causing an increase in manufacturing cost or a complicated manufacturing step even when the size of the heating furnace is increased, and the heating is easily manufactured. A method of a ceiling unit for a furnace, and a method of manufacturing a heating furnace and a heating furnace using the ceiling unit described above.

1‧‧‧Ceiling unit

2‧‧‧Inorganic fiber block

2a, 2b‧‧‧Segmentation of inorganic fiber block 2

3‧‧‧Insulation

4‧‧‧ top board

4a, 4b, 4c‧‧‧ top member

5, 5a, 5b, 5c, 5d, 5e, 5f, 5a', 5b', 5c', 5d', 5e', 5f'‧‧‧ suspension members

6, 6a, 6b, 6c, 6d, 6e‧ ‧ core components

7‧‧‧ fastening clamp

8‧‧‧heating furnace

9‧‧‧ bottom wall

10‧‧‧ side wall

11‧‧‧Transportation means

21‧‧‧Inorganic fiber aggregates

d‧‧‧Layer direction

C1, C2, C3‧‧‧ rod members

D‧‧‧ Direction

I‧‧‧Folding Department

P‧‧‧ pin components

P1‧‧‧ head

P2‧‧‧Axis

R‧‧‧heating room

X‧‧‧ inner wall

Y‧‧‧Insulation layer

SU1, SU2‧‧ unit

Fig. 1 is a front cross-sectional view (Fig. 1 (a)), a plan view (Fig. 1 (b)), and a side cross-sectional view (Fig. 1 (c)) showing a form of a ceiling unit for a heating furnace according to the present invention.

2 is a view showing an example of a form of an inorganic fiber heat insulating block constituting a ceiling unit for a heating furnace of the present invention (FIG. 2 (a) and FIG. 2 (b)) and a view showing an example of forming an inner wall layer. (Fig. 2(c) and Fig. 2(d)).

Fig. 3 is a view showing an example of a form of a heat insulating material layer constituting a ceiling unit for a heating furnace of the present invention.

Fig. 4 is a view showing an example of a method of fixing a suspension member to a top plate (fixed shape example 1 (Fig. 4 (a)), fixed form 2 (Fig. 4 (b)), and fixed form 3 (Fig. 4 (c) )), the figure of the fixed form example 4 (Fig. 4(d))).

Fig. 5 is a view showing an example of a method of joining the suspension member and the core member of the ceiling unit for a heating furnace of the present invention (Fig. 5(a) and Fig. 5(b)).

Fig. 6 is a view showing an embodiment of a combination of a suspension member and a core member constituting a ceiling unit for a heating furnace of the present invention (Fig. 6(a)) and explaining that a suspension member and a core are disposed in the inorganic fiber block; A diagram of the method of combining the components (Fig. 6(b) and Fig. 6(c)).

Fig. 7 is a view for explaining an example of a form of a core member (Fig. 7(a) to Fig. 7(c)).

Fig. 8 is a view showing an example of a method of manufacturing a ceiling unit for a heating furnace according to the present invention (Fig. 8(a) to Fig. 8(c)).

Fig. 9 is a view showing an example of a method of manufacturing a ceiling unit for a heating furnace according to the present invention (Fig. 9(a) to Fig. 9(d)).

Fig. 10 is a view showing an example of a method of manufacturing a ceiling unit for a heating furnace according to the present invention (Fig. 10(a) to Fig. 10(d)).

Fig. 11 is a view showing an example of a method of manufacturing a ceiling unit for a heating furnace according to the present invention (Fig. 11 (a) to Fig. 11 (d)).

FIG. 12 is a view showing a side-by-side arrangement example of a ceiling unit for a heating furnace according to the present invention, and is a front cross-sectional view showing a form of a ceiling unit for a heating furnace according to the present invention (FIG. 12(a)), A side cross-sectional view of a ceiling unit for a heating furnace in which a plurality of ceiling units for a heating furnace are arranged in parallel (FIG. 12(b)), and a heating furnace for a plurality of ceiling units for a heating furnace in which a plurality of other forms are arranged in parallel A side cross-sectional view of the ceiling unit (Fig. 12(c)).

Fig. 13 is a front cross-sectional view showing an embodiment of a heating furnace of the present invention.

Fig. 14 is a side sectional view showing an embodiment of a heating furnace of the present invention.

A ceiling unit for a heating furnace according to the present invention includes an inner wall layer formed by arranging a plurality of inorganic fiber blocks in parallel, and a heat insulating material layer in which a layer is disposed on the inner wall layer. a top plate, the laminated layer is disposed on the heat insulating material layer; a suspension member having one end fixed to the top plate, the other end penetrating the heat insulating material layer and extending into the inorganic fiber block; and a core member inserted in a direction transverse to the inorganic fiber block and combined One end or more of each of the inorganic fiber blocks is provided at the end of the suspension member inserted into the inorganic fiber block.

Hereinafter, the ceiling unit for a heating furnace of the present invention will be described with reference to the drawings as appropriate.

1 is a front elevational cross-sectional view, (b) a plan view, and (c) a side vertical sectional view (A in FIG. 1(b)) for explaining a configuration example of a ceiling unit 1 for a heating furnace according to the present invention. The -A' line cross-sectional view corresponds to the vertical cross-sectional view of Fig. 1(a), and the BB' line cross-sectional view of Fig. 1(b) corresponds to the vertical cross-sectional view of Fig. 1(c).

As shown in Fig. 1, the ceiling unit 1 for a heating furnace according to the present invention has an inner wall layer X formed by arranging a plurality of inorganic fiber blocks 2 in parallel, and a heat insulating material layer Y disposed in a layered layer. The inner wall layer X is formed; and the top plate 4 is laminated on the heat insulating material layer Y.

In the ceiling unit for a heating furnace according to the present invention, the inorganic fiber block 2 is preferably compressed in the lamination direction in a state in which a plurality of inorganic fiber assemblies 21 are laminated as shown in Fig. 2(a). .

As the inorganic fiber aggregate 21, an inorganic fiber blanket can be cited.

Inorganic fiber blankets are those in which cotton (inorganic (short) fibers are processed into mats, and in order to maintain conformality, they are usually processed into a felt by needle rolling.

The inorganic fiber blanket is not particularly limited as long as it is a heat-resistant inorganic fiber. Specifically, for example, FINEFLEX (registered trademark) blankets manufactured by NICHIAS Co., Ltd., TOMBO No. 5120, 5220-Z, etc. .

In the ceiling unit for a heating furnace of the present invention, an inorganic fiber block is formed The inorganic fiber of the bulk or inorganic fiber assembly is not particularly limited as long as it has heat resistance, and is preferably a heat-resistant inorganic fiber having an alumina content of 45% by mass or more (45 to 100% by mass). More preferably, the heat-resistant inorganic fiber of 70% by mass or more (70 to 100% by mass) is mainly composed of fibers, and further preferably has heat resistance of 80% by mass or more (80 to 100% by mass) of alumina. Inorganic fibers are mainly composed of fibers.

Examples of the heat-resistant inorganic fibers, and specific examples include 85 to 100% by mass of aluminum oxide (Al ₂ O ₃₎ of alumina fibers, comprising 85 to 68% by mass of aluminum oxide (Al ₂ O ₃₎ and 15 ~32% by mass of cerium oxide (SiO ₂ ) mullite fiber, 68 to 45 mass % of alumina (Al ₂ O ₃ ) and 32 to 55 mass % of cerium oxide (SiO ₂ ) The acid salt fiber, alumina containing 5 to 45% by mass of alumina (Al ₂ O ₃ ), 45 to 65 mass% of cerium oxide (SiO ₂ ), and 10 to 30% by mass of zirconium oxide (ZrO ₂ ) Zirconium oxide fiber, bismuth acid alkaline earth metal salt fiber, and the like.

In the ceiling unit for a heating furnace of the present invention, the inorganic fibers constituting the inorganic fiber block or the inorganic fiber assembly preferably have a lower content ratio of impurities such as iron, sodium, titanium, etc., and are preferably contained in such impurities. The ratio is 1% by mass or less in terms of oxide, and more preferably 0.5% by mass or less.

In the present application, the term "heat-resistant inorganic fiber as the main constituent fiber" means that the content ratio of the alumina fiber to the total fiber constituting the inorganic fiber block or the inorganic fiber aggregate is 80 to 100 mass. %.

In the ceiling unit for a heating furnace according to the present invention, in the case where the inorganic fiber block is a laminate of inorganic fiber aggregates, the inorganic fiber block includes a plurality of inorganic fiber aggregates in a compressed state. The tape is tightly packed or a plurality of inorganic fiber aggregates are laminated, and the pin member is used for puncture fixation in a compressed state.

As shown in Fig. 2(b), in the case where the inorganic fiber block 2 is a laminated plurality of inorganic fiber aggregates 21, and the pin member P is punctured and fixed in a compressed state, the pin member P is preferably used. In order to have the head portions P1, P1 at both ends and the shaft portion P2 between the head portions P1 and P1, the inorganic fiber assembly can be easily compressed by using the pin member P having the head portions P1, P1 and the shaft portion P2. The body 21 can be shaped into a desired shape (further, in Fig. 2(b), in order to explain the shape of the pin member P, it is shown by cutting off a part of the inorganic fiber block 2 for convenience) .

The tape or the pin member used for the compression of the inorganic fiber assembly 21 is preferably a resin or a belt or pin made of a resin such as polypropylene, and the resin or the pin is easily burned and removed when used as a ceiling unit of the heating furnace. The compressed state of the inorganic fiber blanket can preferably reduce the joint formed between the plurality of inorganic fiber blocks 2, and the heat insulating property can be effectively improved.

When the ceiling unit for a heating furnace of the present invention is used as a ceiling of a heating furnace, the inner wall layer faces the heating chamber side, but the inorganic fiber constituting body constituting the inner wall layer is formed of a laminate of inorganic fiber aggregates. The deterioration due to heat shrinkage can be suppressed, and the seam opening is reduced after heating, which gives the ceiling unit high durability.

In the case of the ceiling unit for a heating furnace of the present invention, in the case where the inorganic fiber block is a laminate of inorganic fiber aggregates, the inorganic fiber aggregates constituting the inorganic fiber block can be mutually compressed or not compressed.

When the inorganic fiber aggregates constituting the inorganic fiber bulk material are mutually compressed, the compression ratio is suitably from 0.1 to 50%, more suitably from 20 to 45%, and more suitably from 30 to 40%.

When the compressibility of the inorganic fiber block is within the above range, when the inner wall layer is formed, a plurality of inorganic fiber blocks are pressed against each other, and the inorganic fiber can be preferably reduced. The seam formed between the two.

When the inorganic fiber aggregates constituting the inorganic fiber bulk are not compressed with each other, the compression ratio is 0%.

Further, in the present application, the compression ratio (%) of the inorganic fiber block means a value calculated according to the following formula.

Compression ratio (%)={1-W/(W ₁ ×n)}×100

Here, W (mm) is the length of the inorganic fiber block in the lamination direction (the length of the inorganic fiber block 2 in the left-right direction shown in Fig. 2 (a)), and W ₁ (mm) is the inorganic fiber aggregate. The thickness (the length in the left-right direction of the inorganic fiber assembly 21 shown in Fig. 2(a)), n is the number of layers of the inorganic fiber aggregate constituting the inorganic fiber block.

In the ceiling unit for a heating furnace according to the present invention, the thickness of the inorganic fiber block (the length of the upper and lower sides of the inorganic fiber block 2 shown in Fig. 1(a) or Fig. 2(a)) is preferably 50~. 300 mm, more preferably 75 to 150 mm, and further preferably 75 to 100 mm.

In the ceiling unit for a heating furnace according to the present invention, the thickness of the inorganic fiber block is within the above range, and the ceiling unit can be provided with sufficient heat resistance.

In the ceiling unit for a heating furnace according to the present invention, the length of the main surface of the inorganic fiber block and the length in the lateral direction may be appropriately determined according to the size of the ceiling unit to be obtained, and is usually 100 to 900 mm in length. 100~600mm or so.

In the ceiling unit for a heating furnace of the present invention, when the inorganic fiber block is compressed in the lamination direction in a state in which a plurality of inorganic fiber aggregates are laminated, the inner wall layer X is not particularly The restriction is preferably such that the main surfaces of the inorganic fiber aggregates 21 constituting the adjacent inorganic fiber bulk bodies 2 are parallel to each other as illustrated in Fig. 2(c) (to constitute the inorganic fibers of the adjacent inorganic fiber bulk bodies 2) In the manner in which the lamination direction d of the aggregate 21 is the same axis shape, a plurality of inorganic fiber blocks 2 are arranged side by side to form By. By arranging the inorganic fiber block 2 in this manner, the inorganic fiber aggregates 21 constituting the inorganic fiber block 2 are pressed against each other, and it is possible to preferably reduce the formation of a plurality of inorganic fiber blocks 2 and 2. Seams can improve insulation more effectively.

In the ceiling unit for a heating furnace according to the present invention, the inner wall layer X may be formed by arranging and arranging the inorganic fiber assemblies 21 constituting the adjacent inorganic fiber block 2 in mutually different directions (constructed adjacent The inorganic fiber assembly 21 of the inorganic fiber block 2 may not have the same axial direction. For example, as shown in Fig. 2(d), the inorganic fiber block 2 may be adjacent to the inorganic material. The lamination direction of the inorganic fiber aggregates 21 of the fiber block 2 is perpendicular to each other (the direction in which the laminated layers of the inorganic fiber aggregates 21 constituting the adjacent inorganic fiber aggregates are different from each other by 90°) is laminated. Configure the creator.

In the ceiling unit for a heating furnace according to the present invention, the inner wall layer may be a layer in which a plurality of layers of inorganic fibers are laminated, and in the ceiling unit for a heating furnace of the present invention, a laminate of inorganic fiber blocks is used. The number is preferably about 1 to 2.

In the ceiling unit for a heating furnace of the present invention, the thickness of the inner wall layer (the length in the upper direction of the inner wall layer X shown in FIG. 1(a)) is preferably 50 to 300 mm, more preferably 75 to 150 mm, and further It is preferably 75 to 100 mm.

In the ceiling unit for a heating furnace according to the present invention, the thickness of the inner wall layer X is within the above range, and the ceiling unit can be provided with sufficient heat resistance.

In the ceiling unit for a heating furnace according to the present invention, as shown in Fig. 1 (a) and the like, the inner wall layer is formed in a layered (long shape) by providing the inorganic fiber block 2 in parallel, even if it is heated. In the case where the size of the ceiling unit is increased, it is also possible to obtain a desired number of layers of the inorganic fiber block 2 in parallel without requiring special production of a large ceramic plate or the like. Therefore, it is simple and inexpensive without causing an increase in manufacturing costs. Ground formation.

In the ceiling unit for a heating furnace of the present invention, the length of the inner wall layer in the longitudinal direction (the length in the left-right direction of the inner wall layer X shown in Fig. 1(a)) is not particularly limited, and is preferably 500 mm or more. Appropriately 500~5000mm, and more suitably 700~4000mm, and more suitably 1000~3000mm, and most suitably 2000~3000mm.

Since the ceiling unit for a heating furnace of the present invention can exhibit high rigidity, even if the inner wall layer is elongated (even if the ceiling unit is elongated), it can be preferably used.

The ceiling unit for a heating furnace of the present invention is formed by forming a heat insulating material layer on an inner wall layer.

In the ceiling unit for a heating furnace according to the present invention, the heat insulating material layer may be formed by arranging a single heat insulating material on the inner wall layer, or may be laminated as shown in FIG. 1(a) or FIG. ) A plurality of pieces of heat insulating material 3 are arranged.

In the ceiling unit for a heating furnace according to the present invention, when a plurality of heat insulating materials 3 are laminated in a heat insulating material layer, the number of laminated layers of the heat insulating material is suitably 1 to 6.

In the ceiling unit for a heating furnace according to the present invention, the heat insulating material layer may be formed by laminating the heat insulating material in a state of being appropriately folded.

In the case where the heat insulating material layer is formed by laminating the heat insulating material 3 in a state of being appropriately folded, the number of laminated layers of the heat insulating material is regarded as the number of folded pieces of the folded heat insulating material. The number of laminated sheets of the heat insulating material is calculated and calculated. For example, when three pieces of heat insulating material are used and one of the heat insulating materials is folded into two folds, the number of laminated sheets of the folded heat insulating material is regarded as "two pieces", and the heat insulating material is laminated. The total number of pieces is 4 pieces.

In the case where the ceiling unit for a heating furnace of the present invention is formed by laminating a heat insulating material in a state of being appropriately folded, a heat insulating material layer is formed. For example, a plurality of heatings are arranged in parallel as follows. The ceiling of the furnace forms the ceiling of the furnace In the following, the gap (seam) generated between the ceiling units for the heating furnace can be easily blocked.

Further, in the ceiling unit for a heating furnace according to the present invention, the heat insulating material constituting the heat insulating material layer may be a long strip from one end portion to the opposite end portion in the longitudinal direction of the inner wall layer (one piece) Further, it is also possible to form a plurality of cut pieces which are cut into appropriate lengths on the inner wall layer in parallel to form a long strip shape.

In the ceiling unit for a heating furnace according to the present invention, it is preferable that the heat insulating material constituting the heat insulating material layer is made of inorganic fibers having heat insulating properties as a main constituent fiber. For example, inorganic fibers are mainly used as the constituent fibers. Specific examples of the plate or the cloth include a plate made of inorganic fibers as a main constituent fiber, a blanket, a felt, and the like.

Moreover, as the inorganic fiber constituting the heat insulating material, in addition to the heat resistant inorganic fiber, a relatively inexpensive inorganic fiber such as glass fiber or rock wool may be used.

In the ceiling unit for a heating furnace according to the present invention, the glass fiber constituting the heat insulating material is a fiberglass or glass wool which is fibrillated by melting and drawing an alkali-free glass such as quartz glass, and has a short fiber. As the continuous fiber (long fiber), in the ceiling unit for a heating furnace of the present invention, any of short fibers and continuous fibers (long fibers) can be used.

In the ceiling unit for a heating furnace according to the present invention, the composition of the glass fiber is not particularly limited, and examples thereof include 52 to 56% by mass of SiO ₂ , 12 to 16% by mass of Al ₂ O ₃ , and 0 to 5 mass. % of MgO, 16 to 25% by mass of CaO, 5 to 10% by mass of B ₂ O ₃ , 0 to 1% by mass of Na ₂ O and/or K ₂ O, and 0 to 1% by mass of TiO ₂ E glass fiber 62 to 65% by mass of SiO ₂ , 20 to 25% by mass of Al ₂ O ₃ , 10 to 15% by mass of MgO, 0 to 1% by mass of CaO, 0 to 1% by mass of B ₂ O ₃ , 0 ~1% by mass of Na ₂ O and/or K ₂ O, 0 to 1% by mass of TiO ₂ T glass fiber; containing 56 to 62% by mass of SiO ₂ , 9 to 15% by mass of Al ₂ O ₃ , 0 ~5 mass% of MgO, 17 to 25% by mass of CaO, 0 to 1% by mass of B ₂ O ₃ , 0 to 1% by mass of Na ₂ O and/or K ₂ O, and 0 to 4% by mass of TiO ₂ NCR glass fiber; and 60-67 mass% SiO ₂ , 2-6 mass% Al ₂ O ₃ , 10-20 mass% MgO and/or CaO, 0-8 mass% B ₂ O ₃ , 8 to 15% by mass of Na ₂ O and/or K ₂ O C glass fiber (boron silicate glass fiber).

In the ceiling unit for a heating furnace according to the present invention, the rock wool constituting the heat insulating material is an artificial mineral fiber mainly composed of cerium oxide and calcium oxide, and can be produced by the following method: mixing in basalt, iron slag, or the like Lime, etc., is melted at a high temperature.

The rock wool is usually composed of 35 to 45 mass% of SiO ₂ , 10 to 20 mass% of Al ₂ O ₃ , 4 to 8 mass% of MgO, and 20 to 40 mass% of CaO. 0 to 10% by mass of Fe ₂ O ₃ and 0 to 4% by mass of MnO.

TOMBO (registered trademark) No. 5120 (FINEFLEX (registered trademark) blanket) and TOMBO (registered trademark) No. 5112-250 (manufactured by NICHIAS Co., Ltd.) are exemplified as the heat insulating material made of the inorganic fiber. FINEFLEX (registered trademark) 1300 hard fiberboard).

In addition, in the material of the present application, the heat insulating material containing inorganic fibers as the main constituent fibers means that the content ratio of the inorganic fibers to all the fibers constituting the heat insulating material is 80 to 100% by mass.

In the ceiling unit for a heating furnace according to the present invention, the thermal conductivity at 800 ° C of the heat insulating material constituting the heat insulating material layer is usually 0.02 to 0.3 W/(K ‧ m).

In the ceiling unit for a heating furnace of the present invention, at least a part of the heat insulating material layer may have a thermal conductivity of 0.02 to 0.09 W/(K‧m) or 0.02 to 0.06 W/(K‧m) at 800 °C. Or 0.02~0.05W/(K‧m) low thermal conductivity insulation material.

The low thermal conductivity heat insulating material is a metal oxide fine particle such as cerium oxide fine particles or alumina fine particles having an average particle diameter of 50 nm or less, glass fiber, and Inorganic fibers such as cerium oxide-alumina fiber, cerium oxide fiber, alumina fiber, ceric acid alkaline earth metal salt fiber, aromatic polyamide fiber, polyethylene fiber, polypropylene fiber, polyolefin fiber, etc. It is sufficient to strengthen the dry pressed body of the fiber.

For example, the dry-pressure-molded article may contain 80 to 98% by mass of metal oxide fine particles and 2 to 20% by mass of reinforcing fibers in a total amount of 100% by mass, or may be 100 in total. The mass % method includes 85 to 98% by mass of metal oxide fine particles and 2 to 15% by mass of reinforcing fibers.

Further, the dry press formed body may be a radiation-scattering material such as tantalum carbide, zirconium oxide, zirconium silicate or titanium oxide. In this case, the dry press formed body may be, for example, 50 to 93% by mass of metal oxide fine particles, 2 to 20% by mass of reinforcing fibers, and 5 to 40% by mass of radiation-scattering material. It contains 65 to 80% by mass of metal oxide fine particles, 5 to 18% by mass of reinforcing fibers, and 15 to 30% by mass of radiation-scattering material.

Specific examples of the low thermal conductivity heat insulating material include TOMBO (registered trademark) No. 4350-GH (ROSURIMU (registered trademark) plate GH) manufactured by NICHIAS Co., Ltd.

In the ceiling unit for a heating furnace according to the present invention, when the heat insulating material layer is formed by laminating a plurality of heat insulating materials, the thermal conductivity of each of the heat insulating materials constituting the heat insulating material layer may be different. When the thermal conductivity (heat insulation) is different, the heat insulating material constituting the heat insulating material layer in this manner can reduce the manufacturing cost of the heat insulating material layer.

In the ceiling unit for a heating furnace according to the present invention, when the heat insulating material layer is a laminate of a plurality of heat insulating materials, the heat insulating material layer may or may not be compressed.

In the ceiling unit for a heating furnace of the present invention, the heat insulating material layer is compressed In the case, the compression ratio is suitably 0.1 to 40%, more suitably 20 to 35%, and more suitably 15 to 25%.

When the compression ratio of the heat insulating material is within the above range, when a plurality of heat insulating materials are used to form the heat insulating material layer, the joint formed between the heat insulating materials can be preferably reduced, and the heat insulating property can be improved.

When the heat insulating material layer is not compressed, the above compression ratio becomes 0%.

Further, in the information of the present application, the compression ratio (%) of the heat insulating material layer means a value calculated according to the following formula.

Compression ratio (%)={1-X/(X ₁ ×n)}×100

Here, X (mm) is the length of the heat insulating material layer in the lamination direction (the length in the upper direction of the heat insulating material layer Y shown in Fig. 3), and X ₁ (mm) is the thickness of the heat insulating material (Fig. 3 The length of the heat insulating material 3 shown in the vertical direction is n, and n is the number of layers of the heat insulating material constituting the heat insulating material layer.

In the ceiling unit for a heating furnace according to the present invention, the thickness of the heat insulating material layer (the length in the upper and lower directions of the heat insulating material layer Y shown in Fig. 1(a)) is preferably 50 to 600 mm, more preferably 100 to 300 mm. Further preferably 150 to 200 mm.

In the case where the heat insulating material layer is formed by laminating a plurality of heat insulating materials, the heat insulating material layer having a desired thickness can be formed by adjusting the number of laminated layers.

In the ceiling unit for a heating furnace according to the present invention, the thickness of the heat insulating material layer is within the above range, and the ceiling unit can be provided with sufficient heat insulation.

In the ceiling unit for a heating furnace according to the present invention, by providing a heat insulating material layer together with the inner wall layer, it is possible to use a heat insulating material constituting the heat insulating material layer to have a lower heat insulating property than the inorganic fiber constituting the inner wall layer. The block body can provide a low-cost ceiling unit for heating furnaces.

Further, in the ceiling unit for a heating furnace according to the present invention, the heat insulating material layer is formed into a long shape by providing the heat insulating material on the inner wall layer, even if the heating furnace is enlarged. In the case where the flower board unit is enlarged, the ceiling unit can be formed simply and inexpensively with high operability.

The ceiling unit for a heating furnace of the present invention is formed by laminating a top plate on a heat insulating material layer.

The constituent material of the top plate is not particularly limited, and is preferably made of a metal such as a steel plate.

Further, the top plate may be a perforated metal such as a perforated metal, and the ceiling plate of the heating furnace may be lightened by the top plate being perforated.

In the ceiling unit for a heating furnace of the present invention, the top plate may be a long strip (one piece) continuous from one end portion to the other end portion corresponding to the length direction of the heat insulating material layer, or as shown in FIG. 1 ( b), the top plate 4 is formed by arranging and joining a plurality of top plate members 4a, 4b, and 4c in parallel. The plurality of top plate members may be joined by being welded to each other or by fastening with a bolt or the like.

In the ceiling unit for a heating furnace according to the present invention, when the top plate 4 is formed by connecting a plurality of top plate members to the heat insulating material layer, even when the heating furnace is increased in size and the ceiling unit is enlarged. It is also possible to form the top plate simply and inexpensively by appropriately changing the number of the top plate members disposed on the heat insulating material layer and joining the common metal plates.

The ceiling unit for a heating furnace of the present invention has a suspension member which is fixed to the top plate at one end and extends through the heat insulating material layer at the other end and extends into the inorganic fiber block.

In the ceiling unit for a heating furnace according to the present invention, the suspension member is not particularly limited as long as it has a rigidity capable of hoisting the inner wall layer, the heat insulating material layer, and the top plate, and is preferably made of a metal such as steel. The original is made of ceramics such as alumina or mullite.

The method of fixing one end of the suspension member to the top plate is also not particularly limited, and may be appropriately fixed by welding or bolt tightening or the like.

For example, as shown in FIG. 1(a), FIG. 1(b), and FIG. 4(a), the bolts can be twisted via the fastening jigs 7, 7 from both sides of the end portion of the suspension member 5 provided with the bolt holes. It is fastened to the top plate 4.

The fastening jigs 7 and 7 may be provided with a thread or a thread groove in the hole of the insertion bolt, or may be provided in the bolt hole of the suspension member or the hole of the fastening clamp. A sleeve-shaped cushioning material formed of heat-resistant rubber.

The suspension member may be fixed to the ceiling by the rod member being inserted into the insertion hole provided at the end portion by one end portion protruding from the top plate.

For example, as shown in the left diagram of FIG. 4(b), the rod-shaped member C1 is used, and it is inserted from one side of the insertion hole provided at the end of the suspension member 5, thereby being inserted as shown in FIG. 4(b). As shown in the right figure, (the bolts of the fastening jigs 7, 7 shown in Fig. 4 (a) are not tightened, etc.), the suspension member 5 is easily fixed to the top plate.

Further, the rod-shaped member may be a recess provided with an insertion hole for fitting to the end portion of the suspension member.

For example, as shown in the left diagram of FIG. 4(c), the rod-shaped member C2 having the concave portion for fitting in the center is inserted from one side of the insertion hole provided at the end portion of the suspension member 5, as shown in FIG. As shown in the right figure of (c), the concave portion of the rod-shaped member C2 is fitted to the upper inner side of the insertion hole of the suspension member 5, whereby the fastening jigs 7 and 7 shown in Fig. 4(a) are not provided. The bolts are tightened, etc.) The suspension member 5 is firmly and easily fixed to the top plate.

Further, the rod-shaped member may be an elongated member that fixes a plurality of suspension members instead of fixing only one of the suspension members.

For example, as shown in FIG. 4(d), the elongated rod-like member C3 is used to be inserted into the insertion hole of the end portion of the suspension member (for example, the suspension member 5a in FIG. 4(d)). After the one side is inserted, the insertion holes provided at the ends of the other suspension members (for example, the suspension members 5b and 5c in FIG. 4(d)) are sequentially inserted, whereby (FIG. 4(a) is not performed. Fastening clamps 7, 7 as shown The bolts are tightened, etc.) The suspension members 5a to 5c are simply fixed to the top plate.

Even if the rod-shaped member is simply inserted into the insertion hole provided at one end of the suspension member, as shown in FIGS. 4(b) to 4(d), the top plate 4 is laminated on the top plate 4 as shown in FIGS. 4(b) to 4(d). Since the heat insulating material layer or the inner wall layer of the lower portion is pressed, it is possible to easily suppress the falling or falling of the rod-shaped member without tightening the bolt or the like.

The constituent material of the rod-shaped member is not particularly limited, and may be a metal material such as stainless steel or a ceramic material such as alumina or mullite.

In the ceiling unit for a heating furnace according to the present invention, one end of the suspension member is fixed to the top plate, and the other end penetrates the heat insulating material layer and extends into the inorganic fiber block.

In the ceiling unit for a heating furnace of the present invention, the number of the suspension members extending into the inorganic fiber block constituting the inner wall layer is not particularly limited, and may be appropriately determined in consideration of the rigidity of the ceiling unit or the like.

In the example shown in Fig. 1 (a) and Fig. 1 (b), two suspension members 5 (suspension members 5a and 5a' and suspension members are disposed for each of the inorganic fiber blocks 2 other than the center portion. 5b and 5b', suspension members 5e and 5e', suspension members 5f and 5f'), and four suspension members 5 for the three inorganic fiber blocks 2 at the center portion (suspension members 5c, 5c) ', 5d, 5d').

In the ceiling unit for a heating furnace of the present invention, a plurality of suspension members may be disposed on one inorganic fiber block.

In the ceiling unit for a heating furnace according to the present invention, one end of the suspension member is fixed to the top plate, and the other end penetrates the heat insulating material layer and extends into the inorganic fiber block.

The ceiling unit for a heating furnace of the present invention faces (exposes) the heating chamber when the inorganic fiber block (inner wall layer) is used as the ceiling of the heating furnace, but the end portion of the suspension member is disposed in the inorganic fiber block. Internally, not externally, it can suppress the thermal deterioration of the suspension member, and it is difficult to be affected by the environment and the gas generated from the furnace, thereby suppressing deterioration. High durability to the ceiling unit.

The ceiling unit for a heating furnace of the present invention has a core member inserted in a direction transverse to the body of the inorganic fiber, and bonded to an end portion of the suspension member inserted into the inorganic fiber block, and each inorganic fiber There is more than one set in the block.

In the ceiling unit for a heating furnace according to the present invention, the core member is a rod-like member which is required to be pressed to the inner wall layer, the heat insulating material layer and the top plate in a state of being joined to the suspension member to impart rigidity to the ceiling unit. The object is not particularly limited, and is preferably made of a metal such as steel or a ceramic such as alumina or mullite.

The method of joining the core member to the suspension member is also not particularly limited. For example, as shown in FIG. 1(a), FIG. 5(a), and FIG. 5(b), the core member 6 may be provided with a through hole. The end of the hanging member 5 is penetrated, and the core member 6 is fitted to the hanging member 5, thereby being joined.

Moreover, as shown in FIG. 6(a), the core member 6 and the suspension member 5 may be combined by welding or the like in advance. In this case, as shown in Fig. 6(b), the fragmented materials 2a, 2b of the inorganic fiber block 2 are inserted from both ends of the core member 6, whereby the core member can be made as shown in Fig. 6(c). 6 is bonded to the end of the suspension member 5 and disposed in a direction transverse to the inside of the inorganic fiber block 2.

In the ceiling unit for a heating furnace of the present invention, the core member is disposed inside the inner wall layer. Although the ceiling unit for the heating furnace of the present invention faces (exposes) the heating chamber when the ceiling is used as the ceiling of the heating furnace, the heat of the core member can be suppressed by disposing the core member inside the inner wall layer instead of the outside. Further, it is difficult to suppress deterioration due to the influence of the gas generated from the environment and the gas generated in the furnace, and the ceiling unit can be provided with high durability.

In the ceiling unit for a heating furnace according to the present invention, the core member is inserted in a direction transverse to the inorganic fiber block and bonded to the end of the suspension member inserted into the inorganic fiber block, and is provided in the inorganic fiber. The number of core members in the block is one Or multiple roots, there is no special limit.

The core member may be as shown in Fig. 7(a), which is only a cross-section of each inorganic fiber block, or as shown in Fig. 7(b), cross-section inorganically across a plurality of inorganic fiber blocks. In the case of the fiber block, as shown in Fig. 7(c), it is also possible to cross the respective inorganic fiber blocks by arranging a plurality of roots in a row in the inorganic fiber block. Further, the core member may be a plurality of in-line cross-sections of inorganic fibers by a plurality of roots arranged in parallel in the inorganic fiber block.

The number of the core members provided in each of the inorganic fiber blocks or the number of the inorganic fiber blocks into which the one core member is inserted may be appropriately determined in consideration of the rigidity to be imparted to the ceiling unit or the like.

In the example shown in Fig. 1(a), as described above, one suspension member 5a, 5b, 5e, 5f is disposed for each of the inorganic fiber blocks 2 other than the center portion, and three of the center portions are disposed. The inorganic fiber block 2 is provided with two suspension members 5c and 5d.

In this regard, in the example shown in FIG. 1(a), the core members 6a, 6b, 6d, and 6e are each a core member which is respectively cross-sectioned in the inorganic fiber block 2 and respectively attached to a suspension member (suspended) The members 5a, 5b, 5e, 5f) are arranged in combination, and the core member 6c is a core member which is transverse to the three inorganic fiber blocks 2 and opposite to the two suspension members (the suspension member 5c and the suspension member 5d) Configured in combination.

The length of the ceiling unit for the heating furnace of the present invention (the length of the ceiling unit 1 shown in Fig. 1(a) in the lateral direction) is suitably 500 mm or more, more suitably 500 to 5000 mm, and more suitably 700~ 4000mm, and more suitably 1000~3000mm, and most suitably 2000~3000mm.

Since the ceiling unit for a heating furnace of the present invention can exhibit high rigidity, even if the inner wall layer is elongated (even if the ceiling unit is elongated), it can be preferably used.

The ceiling unit for a heating furnace of the present invention can be used as a ceiling unit of various heating furnaces, and a ceiling unit as a calcining furnace, in particular, a ceiling unit for calcining a calcining furnace containing a large amount of a material or a member of an alkali metal such as Li can be preferably used.

In the ceiling unit for a heating furnace of the present invention, even when the heating furnace is enlarged, the ceiling unit can be easily enlarged by increasing the manufacturing cost without increasing the manufacturing cost by adding the inorganic fiber. The number of the blocks used or the number of the top members and the like are used, and the inner wall layer and the top plate are elongated, the heat insulating material layer is sandwiched, and the inner wall layer and the top plate are integrated by the suspension member and the core member. Chemical.

Further, since the ceiling unit for the heating furnace of the present invention mounts the entire ceiling unit on the side wall of the heating furnace in the following manner, it is in contrast to the conventional ceiling unit which maintains its shape by the rigidity of the rigid beam. It is easy to maintain its shape by the rigidity of the ceiling unit as a whole.

Further, in the ceiling unit for a heating furnace of the present invention, the inner wall layer, the heat insulating material layer, and the top plate are integrated by the suspension member and the core member, and the number of the suspension member and the core member can be changed. Easily increase rigidity.

Further, since the ceiling unit for a heating furnace of the present invention has a structure in which the suspension member or the like is not exposed to the heating chamber during use, it is possible to impart high durability.

Next, a method of manufacturing the ceiling unit for a heating furnace of the present invention will be described.

The method for producing a ceiling unit for a heating furnace according to the present invention includes the method 1 for manufacturing a ceiling unit for a heating furnace of the present invention and the method for producing a ceiling unit for a heating furnace according to the present invention.

The method for manufacturing a ceiling unit for a heating furnace according to the present invention is the method for producing a ceiling unit for a heating furnace according to the present invention, comprising: inserting one end portion of the suspension member from the main surface side of the inorganic fiber block to a plurality of Steps in the body of inorganic fibers; Inserting one or more core members in the direction of the inside of the inorganic fiber block and bonding them to the end portion of the suspension member inserted into the inorganic fiber block; by stacking the heat insulating material on the top plate a step of forming a laminate of the top plate and the heat insulating material layer; and repeating the process of inserting the other end of the hanging member into the heat insulating material layer and then fixing it to the top plate, and forming a plurality of parallel layers on the heat insulating material layer The step of forming an inner wall layer of inorganic fiber blocks.

In the method 1 for manufacturing a ceiling unit for a heating furnace according to the present invention, first, as shown in Fig. 5 (a), one end portion of the suspension member 5 is made of a plurality of inorganic fibers from the main surface side of the inorganic fiber block. After the block 2 is inserted, as shown in FIG. 5(b), one or more core members 6 are respectively inserted in the direction transverse to the inorganic fiber block 2, and are bonded to the inorganic fiber block 2. The end of the suspension member 5 inside. In the example shown in FIG. 5, the core member 6 is joined to the end portion of the suspension member 5 by passing through the through hole provided in the end portion of the suspension member 5, and is joined.

In the method 1 for manufacturing a ceiling unit for a heating furnace according to the present invention, the inorganic fiber block may be inserted into an end portion of the end portion of the suspension member, and then the end portion of the suspension member may be inserted. After the insertion hole of the core member is inserted into the inorganic fiber block, the core member is inserted into the inorganic fiber block.

Then, as shown in FIG. 8(a), a laminate of the top plate 4 and the heat insulating material layer Y is formed by laminating the heat insulating material 3 on the top plate 4.

Thereafter, as shown in FIG. 8(b), a process of inserting one end into the suspension member 5 of the inorganic fiber block (in the example shown in FIG. 8(a) is the suspension member 5a). The other end of the heat insulating material layer Y is inserted into the heat insulating material layer Y and then fixed to the top plate 4, and as shown in Fig. 8(c), a plurality of inorganic substances are arranged side by side on the heat insulating material layer Y. The inner wall layer X formed of the fiber block 2 can obtain the target ceiling unit 1 (the day shown in Fig. 8(c) The flower board unit 1 corresponds to the ceiling unit 1 shown in Fig. 1(a), but is described upside down for the description of the manufacturing steps, and attention should be paid to this point).

When the other end of the suspension member 5 is inserted into the heat insulating material layer Y and is passed through and then fixed to the top plate 4, the heat insulating material layer Y can be fixed while being fixed.

Moreover, the method of the deformation method of the manufacturing method 1 of the ceiling unit for heating furnaces of the present invention (hereinafter referred to as "the method 1-1 of the ceiling unit for a heating furnace of the present invention") is also mentioned.

The method for producing a ceiling unit for a heating furnace according to the present invention is characterized in that: the step of inserting one end portion of the suspension member into a plurality of inorganic fiber blocks from the main surface side of the inorganic fiber block; Inserting more than one core member in a direction transverse to the body of the inorganic fiber block, and bonding it to the end portion of the suspension member inserted into the inorganic fiber block; juxtaposed with a plurality of configurations a step of forming an inner wall layer by the hanging member and the inorganic fiber block of the core member; and inserting a heat insulating material at the other end of the suspension member provided on the plurality of inorganic fiber blocks arranged in parallel a step of forming a heat insulating material layer therethrough; and a step of fixing the top plate to an end portion of the hanging member through which the heat insulating material has been inserted.

In the method 1-1 of the ceiling unit for a heating furnace of the present invention, first, as shown in Fig. 5(a), the main body of the inorganic fiber block is the same as the method 1 of the ceiling unit for a heating furnace of the present invention. After inserting one end portion of the suspension member 5 into the plurality of inorganic fiber bulk bodies 2 on the surface side, as shown in FIG. 5(b), one or more of them are inserted in the direction transverse to the inorganic fiber bulk body 2, respectively. The core member 6 is bonded to the end portion of the suspension member 5 inserted into the inorganic fiber block 2.

Then, as shown in FIGS. 9(a) and 9(b), a plurality of inorganic fiber blocks 2 in which the above-described suspension member 5 and core member 6 are disposed are arranged in parallel to form an inner wall layer X, and then, as shown in FIG. As shown in Fig. 9 (c), the heat insulating material 3 is inserted into the other end of the suspension member 5 provided in the plurality of inorganic fiber blocks 2 arranged in parallel, and is passed through to form the heat insulating material layer Y. Thereafter, as shown in FIG. 9(d), the ceiling unit 4 is fixed to the end portion of the suspension member 5 through which the heat insulating material 3 has been inserted and inserted by using a fastening jig or the like, whereby the target ceiling unit 1 can be obtained.

Further, the method 2 for manufacturing a ceiling unit for a heating furnace according to the present invention is a method for manufacturing a ceiling unit for a heating furnace according to the present invention, comprising: fixing one end portion of each of the plurality of suspension members to a main surface of the top plate; a step of forming a heat insulating material layer on the top plate by inserting a heat insulating material into the other end of the hanging member fixed to the top plate; and repeating the following processing: fixing to the top plate After the other end of the suspension member is further inserted into the inorganic fiber block, one or more core members are inserted in a direction transverse to the inorganic fiber block, and are coupled to the end of the suspension member, thereby The heat insulating material layer has a step of forming an inner wall layer in which a plurality of inorganic fiber blocks are arranged in parallel.

In the method 2 of the ceiling unit for a heating furnace according to the present invention, first, as shown in FIG. 10(a), one end portion of each of the plurality of suspension members 5a to 5f is fixed to the main surface of the top plate 4. In the example shown in Fig. 10 (a), the suspension members 5a to 5f are fixed by tightening the bolts from both sides of the end portion of the suspension member 5 provided with the bolt holes via the fastening jig.

Then, as shown in FIG. 10(b), the heat insulating material 3 is inserted into the other end of the suspension members 5a to 5f fixed to the top plate 4, and the heat insulating material layer Y is formed on the top plate 4, and The other end of the suspension members 5a to 5f fixed to the top plate 4 is further inserted into the inorganic fiber block 2.

Further, as shown in Fig. 10(c), the core member 6a is inserted in the direction transverse to the inside of the inorganic fiber block 2, and is bonded to the end portion of the suspension member 5a (shown in Fig. 10(c)). In the example, the core member 6a is fitted to the end hole of the end portion of the suspension member 5a so that the core member 6a is fitted to the end portion of the suspension member 5a.

The operation of inserting the suspension member into the inorganic fiber block by the operation of inserting the suspension member into the inorganic fiber block and joining the core member toward the end of the suspension member is performed on the heat insulating layer The inner wall layer X in which a plurality of inorganic fiber blocks 2 are arranged in parallel is formed on Y, and the target ceiling unit 1 can be obtained (the ceiling unit 1 shown in FIG. 10(d) corresponds to FIG. 1(a). The ceiling unit is one, but it is described upside down for the description of the manufacturing steps. Please pay attention to this point).

When the core member is joined to the end portion of the suspension member 5, the heat insulating material layer Y may be compressed while the two are combined.

Further, as a method of manufacturing the heating furnace of the present invention, as shown in Fig. 11 (a), a plurality of sub-units (sub-units SU1, SU2, ...) having a structure in which the ceiling unit is divided are produced, as shown in Fig. 11 (b). In the middle cross-sectional view and the upper perspective view in FIG. 11(c), the respective units are connected by bolt tightening or the like via a fastening jig or the like. The fastening jig may be formed by providing a threaded ridge or a threaded groove in the hole of the insertion bolt. By sequentially connecting the above-described sub-units, the target ceiling unit 1 can also be obtained as shown in Fig. 11(d).

As shown in FIG. 11(b), when a plurality of sub-units (sub-units SU1, SU2, ...) are connected to form a ceiling unit 1 for a heating furnace, between a plurality of sub-units (sub-units SU1, SU2, ...) It is easy to create gaps (seams). Therefore, as described above, the heat insulating material 3 constituting the secondary unit (as shown by the secondary unit SU2 in Fig. 11(a)) may be laminated in a state in which at least a part of the heat insulating material 3 is folded, preferably by The bent portion (the bent portion I shown in FIG. 11(a)) of the folded heat insulating material abuts on the adjacent sub-units, and is arranged in parallel and connected to block the gap (seam).

In the manufacturing method of the ceiling unit for a heating furnace of the present invention, obtained The details of the ceiling unit are as described in the description of the ceiling unit for the heating furnace of the present invention.

In the method for manufacturing a ceiling unit for a heating furnace according to the present invention, even when the heating furnace is increased in size, a large ceiling unit can be easily produced without causing an increase in manufacturing cost or a complicated manufacturing step as follows: Increasing the number of use of the inorganic fiber block or the number of the top member to lengthen the inner wall layer and the top plate, sandwiching the heat insulating material layer, and fixing the inner wall layer and the top plate by the hanging member and the core member And make it integrated.

Next, the use form of the ceiling unit 1 for a heating furnace of the present invention (or the ceiling unit 1 for heating manufactured by the production method of the present invention) will be described.

Fig. 12 (a) is a front cross-sectional view showing an embodiment of a ceiling unit 1 for a heating furnace according to the present invention (or a ceiling unit 1 for heating manufactured by the manufacturing method of the present invention), and Fig. 12 (b) is a view showing a self-illustration In the side direction of the 12 (a) (D direction), a plurality of ceiling units 1 for the heating furnace are arranged in parallel, and as shown in FIG. 12(b), a plurality of ceilings for the heating furnace are arranged in parallel. Unit 1, the ceiling of the furnace can be easily formed.

As shown in Fig. 12 (b), when a plurality of ceiling units 1 for heating furnaces are arranged in parallel to form a ceiling of a heating furnace, a gap (seam) is likely to occur between the plurality of ceiling units 1 and 1 for heating furnaces. Therefore, as described above, it is preferable to form the heat insulating material 3 which is formed by folding at least a part of the heat insulating material layer of the ceiling unit 1 for the heating furnace, as shown in Fig. 12(c), The bent portion 1 of the folded heat insulating material abuts on the adjacent ceiling unit 1 for the heating furnace and is arranged in parallel to block the gap (seam).

Next, the heating furnace of the present invention will be described.

The heating furnace of the present invention is characterized by having a bottom wall, a side wall erected on the bottom wall, and a ceiling unit for a heating furnace of the present invention placed on the side wall, and The inner wall layer of the ceiling unit for the heating furnace is disposed opposite to the bottom wall, and the heating chamber is defined inside.

As illustrated in the cross-sectional view of Fig. 13, the heating furnace 8 of the present invention is characterized by having a bottom wall 9, a side wall 10 erected on the outer periphery of the bottom wall, and the present invention placed on the side walls 10, 10. The ceiling unit 1 for a heating furnace is formed by arranging the inner wall layer X of the ceiling unit 1 for a heating furnace and the bottom wall 9 so as to define the heating chamber R inside.

In the heating chamber R of the heating furnace 7 of the present invention, the conveying means 11 for transporting the heating target or the like is preferably provided.

As the transport means 11, a known person can be suitably used, and specifically, a roller, a trolley, a walking beam, a conveyor belt, etc. are mentioned.

In the heating furnace of the present invention, the details of the ceiling unit are as described in the description of the ceiling unit for the heating furnace of the present invention. Further, as the bottom wall, the side wall, and the like, a known person used in a heating furnace can be used.

In the heating furnace of the present invention, the ceiling unit for the heating furnace of the present invention may be disposed only on the side wall, or the two may be joined by a metal frame or the like.

Preferably, the joint material (gap material) is disposed between the ceiling unit and the side wall (contact portion between the ceiling unit and the side wall), and the joint material is not particularly limited, and is preferably made of inorganic fiber, specifically A blanket, a block, paper, etc. which consist of the said heat resistant inorganic fiber are mentioned.

The heating furnace of the present invention may be formed by juxtaposing a plurality of ceiling units for a heating furnace of the present invention in parallel on a side wall.

In the case where the heating furnace of the present invention is formed by arranging a plurality of ceiling units in parallel on the side wall, it is preferable to arrange a joint material (gap material) between the ceiling units as a seam. The material is not particularly limited, and is preferably an inorganic fiber. Specific examples thereof include a blanket, a block, and paper containing the heat-resistant inorganic fiber.

The heating furnace of the present invention can be used as various heating furnaces, and a calcining furnace which is a calcining furnace, in particular, a material or a member containing a large amount of an alkali metal such as Li can be preferably used.

According to the present invention, the ceiling unit for the heating furnace of the present invention is entirely placed on the side wall of the heating furnace, and thus, in contrast to the case where the conventional ceiling unit retains its shape by virtue of the rigidity of the rigid beam, the ceiling unit can be used. Since the overall rigidity is high and it is easy to maintain its own shape, it is possible to provide a heating furnace which is difficult to produce high rigidity such as bending in the ceiling unit even when the size is increased.

Moreover, according to the present invention, the ceiling unit for a heating furnace of the present invention which has high durability without causing an increase in manufacturing cost or a complicated manufacturing step, can be used, thereby providing an increase in manufacturing cost or a manufacturing step. A furnace that is complicated and has high durability.

Next, a method of manufacturing the heating furnace of the present invention will be described.

The manufacturing method of the heating furnace of the present invention is characterized by comprising the steps of: providing a side wall in such a manner that the bottom wall is erected; and placing the ceiling unit for the heating furnace of the present invention on the side wall.

As illustrated in the front cross-sectional view of FIG. 13 and the side cross-sectional view of FIG. 14, the manufacturing method of the heating furnace 7 of the present invention is such that the side wall 9 is provided in such a manner that the outer peripheral portion of the bottom wall 8 is erected, and the side wall 9 is provided. And placing the ceiling unit 1 for the heating furnace of the present invention, as shown in Fig. 14, by forming a ceiling by placing a required number of the ceiling unit 1 of the present invention on the side wall of the heating furnace, the target can be manufactured. Heating furnace 8.

In the heating chamber R, a conveying means 11 such as a roller for conveying a heating target or the like may be appropriately provided.

In the manufacturing method of the heating furnace of the present invention, the heating furnace of the present invention The plate unit may be disposed only on the side wall, or may be joined by a metal frame or the like.

The joint material may be appropriately disposed between the ceiling unit and the side wall (the contact portion between the ceiling unit and the side wall), and the joint material may be the same as the above.

In the manufacturing method of the heating furnace of the present invention, when a plurality of ceiling units are arranged side by side on the side wall, a joint material may be disposed between the ceiling units, and the joint material may be the same as the above.

In the manufacturing method of the heating furnace of the present invention, the details of the obtained heating furnace are as detailed in the description of the heating furnace of the present invention.

According to the present invention, since the ceiling unit for a heating furnace of the present invention is entirely placed on the side wall of the heating furnace, the shape of the ceiling unit can be easily maintained by the rigidity of the entire ceiling unit, so that it is possible to easily manufacture even a large size. The method also has a method in which the ceiling unit is hard to generate a high rigidity such as bending.

(industrial availability)

According to the present invention, it is possible to provide a ceiling unit for a heating furnace which has high rigidity and durability without causing an increase in manufacturing cost or a complicated manufacturing step even when the size of the heating furnace is increased, and the heating is easily manufactured. A method of a ceiling unit for a furnace, and a method of manufacturing a heating furnace and a heating furnace using the ceiling unit described above.

1‧‧‧Ceiling unit

2‧‧‧Inorganic fiber block

3‧‧‧Insulation

4‧‧‧ top board

4a, 4b, 4c‧‧‧ top member

5, 5a, 5b, 5c, 5d, 5e, 5f, 5a', 5b', 5c', 5d', 5e', 5f'‧‧‧ suspension members

6, 6a, 6b, 6c, 6d, 6e‧ ‧ core components

X‧‧‧ inner wall

Y‧‧‧Insulation layer

Claims (9)

A ceiling unit for a heating furnace, comprising: an inner wall layer formed by arranging a plurality of inorganic fiber blocks in parallel; and a heat insulating material layer, wherein the heat insulating material layer is disposed on the inner wall layer; a top plate, the laminated layer is disposed on the heat insulating material layer; the hanging member has one end fixed to the top plate, the other end penetrates the heat insulating material layer and extends into the inorganic fiber block; and the core member has a cross section The inorganic fiber block is inserted in the direction of the body, and is bonded to the end portion of the suspension member inserted into the inorganic fiber block, and one or more of the inorganic fiber blocks are provided. The ceiling unit for a heating furnace according to the first aspect of the invention, wherein the inorganic fiber block system is compressed in a lamination direction in a state in which a plurality of inorganic fiber aggregates are laminated, wherein the inner wall layer is A plurality of inorganic fiber blocks are formed in parallel so that the main surfaces of the inorganic fiber aggregates constituting the adjacent inorganic fiber aggregates are arranged in parallel. The ceiling unit for a heating furnace according to the first aspect of the invention, wherein the inorganic fiber block is a heat-resistant inorganic fiber having an alumina content of 45% by mass or more as a main constituent fiber. The ceiling unit for a heating furnace according to the first aspect of the invention, wherein the heat insulating material layer is formed by laminating a plurality of heat insulating materials. The ceiling unit for a heating furnace according to claim 1, wherein at least a part of the heat insulating material layer is composed of a heat insulating material having a thermal conductivity of 0.02 to 0.09 W/(K‧m) at 800 °C. Method for manufacturing ceiling unit for heating furnace, which is the first patent application scope The method of a ceiling unit for a heating furnace according to any one of the preceding claims, comprising the step of inserting one end portion of the suspension member into a plurality of inorganic fiber blocks from a main surface side of the inorganic fiber block. Inserting more than one core member in a direction transverse to the body of the inorganic fiber block, and bonding it to the end portion of the suspension member inserted into the inorganic fiber block; stacking heat insulation on the top plate a step of forming a heat insulating material layer; and repeatedly performing the process of inserting and inserting the other end of the hanging member into the heat insulating material layer and then fixing the same to the top plate, and forming a plurality of inorganic fibers in parallel on the heat insulating material layer The step of forming the inner wall layer of the block. A method for manufacturing a ceiling unit for a heating furnace, which is a method for manufacturing a ceiling unit for a heating furnace according to any one of claims 1 to 5, characterized by comprising: one end portion of each of a plurality of suspension members a step of fixing the main surface of the top plate; inserting a heat insulating material at the other end of the hanging member fixed to the top plate, and passing the same, thereby forming a heat insulating material layer on the top plate; and repeating a process of inserting an inorganic fiber block into the other end of the suspension member fixed to the top plate, and then inserting more than one core member in a direction transverse to the inorganic fiber block and bonding the same The end portion of the suspension member is formed on the heat insulating material layer to form an inner wall layer in which a plurality of inorganic fiber blocks are arranged side by side. A heating furnace characterized by having a bottom wall, a side wall erected on the bottom wall, and a ceiling unit for a heating furnace according to any one of claims 1 to 5, which is placed on the side wall, and is The inner wall layer and the bottom wall pair of the ceiling unit for the above heating furnace The configuration is performed in such a manner that the heating chamber is defined as the inside. A method for manufacturing a heating furnace, which is a method for manufacturing a heating furnace according to item 8 of the patent application, characterized in that: a step of arranging a side wall from a bottom wall; and placing a patent application scope on the side wall The step of a ceiling unit for a heating furnace according to any one of items 1 to 5.