JP6358687B2 - Furnace panel, furnace structure, and furnace construction method - Google Patents

Description

  The present invention relates to a furnace panel, furnace structure, and the like used in industrial furnaces used for melting, refining and heating in fields such as steel, automobiles, electricity, electronics, ceramics, chemical industry, and environment. And a furnace construction method.

  Industrial furnaces are used, for example, in ceramic firing processes in electronic ceramic manufacturing technology. In many of these industrial furnaces, the furnace wall and the hearth are constructed by stacking or laying refractory bricks (230 × 114 × 65 mm) of a size called a normal type using a refractory mortar as a bonding material. The ceiling of the furnace employs a structure in which refractory bricks are assembled in an arch shape because the arch structure is suitable for stably holding a heavy ceiling.

  By the way, in the furnace which does not have any problem with ceramic fiber in terms of heat resistance, a furnace using ceramic fiber instead of refractory bricks has been proposed and put into practical use from the viewpoint of workability. Since ceramic fibers are much lighter than refractory bricks, building large panels using ceramic fibers and using them for furnace walls and ceilings greatly improves the workability of the furnace construction. In this case, a flat ceiling can be formed instead of an arch structure by a method such as suspending a panel constituting the ceiling from above (Patent Document 1).

  On the other hand, the coke oven described in Patent Document 2 uses a refractory for the furnace body, and the gap formed between the furnace body refractories is sealed by interposing a ceramic fiber rope. Yes.

JP 2008-45815 A JP 2014-133895 A

  However, with regard to ceramic fiber, it is obliged to collect it with water and prevent it from being scattered by amending the “Regulation for Preventing Specific Chemical Substances” enacted and applied on November 1, 2015. , Use was regulated. For this reason, it becomes difficult to use the ceramic board for the ceiling member after the rule revision. When the ceramic board is used, a problem occurs in disposal of the ceramic board when the furnace is discarded. Therefore, such a ceramic board has a big problem in use as a sealing material of a furnace.

  The present invention was made in view of such problems, and instead of using ceramic fibers, by using a lightweight refractory, an industrial furnace that takes advantage of the heat resistance and lightness of the lightweight refractory, Building a furnace with a method that suppresses heat and thermal stress propagation in the refractory constituting the furnace body panel as much as possible, prevents cracks and cracks due to thermal expansion, and improves workability in building work. An object of the present invention is to provide a furnace body panel, a furnace body structure, and a furnace building method capable of obtaining an industrial furnace preferable for the environment.

The furnace panel according to the present invention is
A plurality of plate-like refractory pieces are arranged in a direction parallel to the plane and overlapped in a direction perpendicular to the plane, and a boundary between the refractory pieces adjacent to the direction parallel to the plane is perpendicular to the plane. The refractory pieces adjacent to each other are arranged so as not to coincide with the boundary between the refractory pieces adjacent to each other, the faces parallel to the plane are joined, and the refractory pieces adjacent to the direction parallel to the plane are not joined. The assembled furnace body panel,
The overall shape constituted by the whole of the plurality of refractory pieces is a main body part having a rectangular parallelepiped shape, a convex part protruding from the center of a plane parallel to the plane of the main body part, and the convex part in the main body part. Having a concave portion formed on the surface opposite to the surface on which the portion is formed, corresponding to the convex portion,
The convex part of one furnace body panel is fitted into the concave part of another furnace body panel, and is used for applications in which a plurality of furnace body panels are overlapped.

Other furnace body panels according to the present invention are:
A plurality of plate-like refractory pieces are arranged in a direction parallel to the plane and overlapped in a direction perpendicular to the plane, and a boundary between the refractory pieces adjacent to the direction parallel to the plane is perpendicular to the plane. The refractory pieces adjacent to each other are arranged so as not to coincide with the boundary between the refractory pieces adjacent to each other, the faces parallel to the plane are joined, and the refractory pieces adjacent to the direction parallel to the plane are not joined. The assembled furnace body panel,
The boundary between the refractory pieces adjacent to each other in a direction parallel to the plane is a small first gap, at least a part of which includes contact between the refractory pieces, and a second gap whose other part is larger than the first gap. And
The overall shape constituted by the whole of the plurality of refractory pieces is a main body part having a rectangular parallelepiped shape, a convex part projecting from the center of a plane parallel to the plane of the main body part, and the convex part in the main body part. Having a concave portion formed on the surface opposite to the surface on which the portion is formed, corresponding to the convex portion,
The convex part of one furnace body panel is fitted into the concave part of another furnace body panel, and is used for applications in which a plurality of furnace body panels are overlapped.

In this furnace panel, for example,
The refractory pieces arranged in a direction parallel to the plane constitute a refractory piece layer, and a plurality of the refractory piece layers are stacked to constitute the furnace body panel,
The second gap is provided every other layer of the refractory piece layer.

Other furnace body panels according to the present invention are:
A plurality of plate-like refractory pieces are arranged in a direction parallel to the plane and overlapped in a direction perpendicular to the plane, and a boundary between the refractory pieces adjacent to the direction parallel to the plane is perpendicular to the plane. The refractory pieces adjacent to each other are arranged so as not to coincide with the boundary between the refractory pieces adjacent to each other, the faces parallel to the plane are joined, and the refractory pieces adjacent to the direction parallel to the plane are not joined. The assembled furnace body panel,
The overall shape constituted by the whole of the plurality of refractory pieces is a main body part having a rectangular parallelepiped shape, a first convex part protruding from a half region of a surface parallel to the plane of the main body part, and the main body A second convex portion projecting from a half region of the surface on the opposite side of the surface on which the first convex portion is formed.
For use in which a plurality of furnace body panels are overlapped by engaging the first convex part of one furnace body panel with the first convex part or the second convex part of another furnace body panel. It is used.

Other furnace body panels according to the present invention are:
A plurality of plate-like refractory pieces are arranged in a direction parallel to the plane and overlapped in a direction perpendicular to the plane, and a boundary between the refractory pieces adjacent to the direction parallel to the plane is perpendicular to the plane. The refractory pieces adjacent to each other are arranged so as not to coincide with the boundary between the refractory pieces adjacent to each other, the faces parallel to the plane are joined, and the refractory pieces adjacent to the direction parallel to the plane are not joined. The assembled furnace body panel,
The boundary between the refractory pieces adjacent to each other in a direction parallel to the plane is a small first gap, at least a part of which includes contact between the refractory pieces, and a second gap whose other part is larger than the first gap. And
The overall shape constituted by the whole of the plurality of refractory pieces is a main body part having a rectangular parallelepiped shape, a first convex part protruding from a half region of a surface parallel to the plane of the main body part, and the main body A second convex portion projecting from a half region of the surface on the opposite side of the surface on which the first convex portion is formed.
For use in which a plurality of furnace body panels are overlapped by engaging the first convex part of one furnace body panel with the first convex part or the second convex part of another furnace body panel. It is used.

Still another furnace body panel according to the present invention is:
A plurality of plate-like refractory pieces are arranged in a direction parallel to the plane and overlapped in a direction perpendicular to the plane, and a boundary between the refractory pieces adjacent to the direction parallel to the plane is perpendicular to the plane. The refractory pieces adjacent to each other are arranged so as not to coincide with the boundary between the refractory pieces adjacent to each other, the faces parallel to the plane are joined, and the refractory pieces adjacent to the direction parallel to the plane are not joined. The assembled furnace body panel,
The boundary between the refractory pieces adjacent to each other in a direction parallel to the plane is a small first gap, at least a part of which includes contact between the refractory pieces, and a second gap whose other part is larger than the first gap. It is characterized by being.

The furnace structure according to the present invention is
Built using a plurality of furnace body panels,
When the furnace body panel has the protrusions and the recesses, the plurality of furnace body panels are formed by fitting the protrusions of one furnace body panel into the recesses of another furnace body panel. Or when the furnace panel has the first and second protrusions, the first protrusion of one furnace body panel is the first protrusion of another furnace body panel. At least one of the side wall, the bottom wall, and the ceiling wall of the furnace body is constructed by overlapping the plurality of furnace body panels by engaging with the convex part or the second convex part. .

In this furnace structure, for example,
The furnace body panel is arranged with the convex portion and the concave portion or the first convex portion and the second convex portion of the furnace body panel facing the height direction of the furnace body, and in this state, a plurality of furnaces are disposed. The body panels are stacked and the side walls of the furnace body are built or, for example,
The furnace body panel is arranged with the convex part and the concave part or the first convex part and the second convex part of the furnace body panel facing the depth direction or the width direction of the furnace body. The side walls of the furnace body are constructed by stacking the furnace body panels in the depth direction or the width direction of the furnace body.

For example,
The furnace body panel is arranged with the convex part and the concave part or the first convex part and the second convex part of the furnace body panel facing the depth direction of the furnace body, and in this state, a plurality of furnace bodies It can be configured such that the bottom wall and the ceiling wall of the furnace body are constructed by stacking the panels for use in the depth direction of the furnace body. Furthermore, in these furnace body structures, for example,
The furnace body panel constituting the ceiling wall can be configured such that a reinforcing mandrel is inserted in the center of the main body.

The furnace building method according to the present invention is:
When a plurality of furnace body panels are prepared and the furnace body panel has the convex portions and the concave portions, the convex portions of one furnace body panel are fitted into the concave portions of another furnace body panel. In combination, the plurality of furnace body panels are stacked, or when the furnace body panel has the first and second convex portions, the first convex portion of one furnace body panel. Is engaged with the first convex portion or the second convex portion of the other furnace body panel, and the plurality of furnace body panels are overlapped, thereby at least any one of the side wall, the bottom wall, and the ceiling wall of the furnace body. It is characterized by constructing.

In this furnace construction method, for example,
The furnace body panel is arranged with the convex portion and the concave portion or the first convex portion and the second convex portion of the furnace body panel facing the height direction of the furnace body, and in this state, a plurality of furnaces are disposed. Stack body panels to build the side walls of the furnace body or, for example,
The furnace body panel is arranged with the convex part and the concave part or the first convex part and the second convex part of the furnace body panel facing the depth direction or the width direction of the furnace body. The side walls of the furnace body can be constructed by stacking the furnace body panels in the depth direction or the width direction of the furnace body. In addition,
The furnace body panel is arranged with the convex part and the concave part or the first convex part and the second convex part of the furnace body panel facing the depth direction of the furnace body, and in this state, a plurality of furnace bodies The bottom panel and the ceiling wall of the furnace body can be constructed by stacking panels for use in the depth direction of the furnace body.

  According to the present invention, a plurality of furnace body panels having a convex part and a concave part are connected by fitting the convex parts and concave parts of adjacent furnace body panels, and this is repeated. Since at least one of the side wall, the bottom wall, and the ceiling wall is constructed, the furnace construction work is easy and the sealing performance as a wall is excellent. At the time of building the furnace, it is not necessary to perform mortar joining as in the past, so that labor can be saved at the time of work.

  In particular, the furnace body panel is formed by stacking a plurality of plate-like refractory pieces and forming a surface parallel to one surface as a bonding surface, and a non-bonding surface that does not bond a surface perpendicular to the bonding surface, Heat transfer and thermal stress propagation can be prevented on the non-joint surfaces, and cracks in the furnace panel and furnace body caused by thermal expansion can be prevented.

  Further, among the refractory piece layers arranged in a direction parallel to the one surface, when a gap between some of the refractory piece layers is a first gap, the remaining gap is larger than the first gap. By setting the second gap, since the refractory pieces are largely separated from each other in the second gap, the heat expansion and the thermal stress propagation are further reliably prevented, and the thermal expansion is suppressed. Generation of cracks and cracks in the furnace body panel and furnace body due to thermal expansion can be prevented. Furthermore, the heat insulation of a furnace body improves by providing a space | gap.

It is a figure which shows the panel 10 for furnace bodies which comprises the ceiling wall, side wall part, and bottom wall of the furnace body structure which concerns on 1st Embodiment of this invention, Fig.1 (a) is a front view of the panel 10 for furnace bodies, 1B is a plan view of the furnace body panel 10, FIG. 1C is a right side view of the furnace body panel 10, and FIG. 1D is a perspective view of the furnace body panel 10. Similarly, in the first embodiment, it is a diagram showing a modification of the furnace body panel, FIG. 2 (a) is a front view of the furnace body panel 20, FIG. 2 (b) is a plan view of the furnace body panel 20 FIG. 2C is a right side view of the furnace body panel 20. It is a figure which shows the panel 30 for short-sized furnace bodies. It is a figure which shows the panel 40 for short-sized furnace bodies. It is a figure which shows the panel 50 for short-sized furnace bodies. It is a plane sectional view showing the furnace structure of this embodiment. It is the front sectional drawing similarly. It is the right side view similarly. (A) is a top view which shows the furnace construction method of this embodiment, (b) is a front view, (c) It is a right view. (A) is a top view which similarly shows the furnace construction method of this embodiment, (b) is a front view, (c) It is a right view. It is a plane sectional view showing the furnace structure of other embodiments of this embodiment. It is the front sectional drawing similarly. It is the right side view similarly. It is the cross-sectional view of the ceiling wall similarly. It is front sectional drawing which shows the ceiling wall which connected two refractory members. It is a figure which shows the panel 60 for furnace bodies which concerns on 2nd Embodiment of this invention, Fig.16 (a) is front sectional drawing of the panel 60 for furnace bodies, FIG.16 (b) is the side sectional drawing similarly. (A), (b) shows the refractory piece layer 61b etc., (c), (d) shows the refractory piece layer 61c etc., (e), (f) shows the refractory piece layer 61a, (G), (h) is a figure which shows 61g of refractory piece layers. (A) shows a plan view of the furnace body panel 60, and (b) shows a plan view of the furnace body panel 64. It is a figure which shows the panel 65 for furnace bodies. It is a figure which shows the refractory piece layer of the panel 65 for furnace bodies. It is a figure which shows the panel 66 for furnace bodies. It is a figure which shows the refractory piece layer of the panel 66 for furnace bodies. It is a figure which shows the panel 70 for furnace bodies which concerns on 3rd Embodiment of this invention, (a) is a front view, (b) is a right view, (c) is a top view. It is right side sectional drawing which shows the furnace body which constructed | assembled the bottom wall and ceiling wall of the furnace body using the panel 70 for furnace bodies. It is the front sectional drawing similarly. It is a figure which shows the panel 80 for furnace bodies, (a) is a front view, (b) is right side sectional drawing, (c) is a top view. It is a figure which shows the panel 90 for furnace bodies, (a) is a front view, (b) is right side sectional drawing, (c) is a top view. It is a figure which shows the refractory piece layer of the panel 90 for furnace bodies. It is a figure which shows the panel 100 for furnace bodies, (a) is a front view, (b) is right side sectional drawing, (c) is a top view. It is a figure which shows the refractory piece layer of the panel 100 for furnace bodies.

Hereinafter, embodiments of the present invention will be specifically described. The refractory used in the present invention is preferably a lightweight refractory. The composition of the refractory itself is, for example, Al ₂ O ₃ : 95.0% by mass, SiO ₂ : 4.5% by mass, Fe ₂ O ₃ : 0.1% by mass, Na ₂ O: 0.4% by mass. What is necessary is just to use the thing of normal composition, such as a thing, but in the process of manufacturing a refractory, by devising foaming treatment etc., bulk specific gravity is 1.0 or less, for example, preferably 0.2-0.8 etc. Low refractory. In addition, the manufacturing method of the lightweight alumina fireproof heat insulation brick whose bulk specific gravity is 1.0 or less is described in Unexamined-Japanese-Patent No. 2013-139368 etc. By using such a lightweight refractory, for example, when the bulk specific gravity is 0.3, the weight of the refractory member 10 (described later) having a length L of about 2 m can be reduced to about 25 kg. As a result, the workability of the operator can be maintained satisfactorily during the construction of the furnace.

  Next, a first embodiment of the present invention will be specifically described with reference to the accompanying drawings. First, the furnace body panel according to the first embodiment of the present invention will be described. FIG. 1 is a view showing a furnace body panel 10 constituting a ceiling wall, a side wall portion, and a bottom wall of the furnace body. FIG. 1 (a) is a front view of the furnace body panel 10, and FIG. FIG. 1C is a right side view of the furnace body panel 10, and FIG. 1D is a perspective view of the furnace body panel 10. FIG. 2 is a view showing a furnace body panel 20 for a side wall corner of the furnace body, FIG. 2 (a) is a front view of the furnace body panel 20, and FIG. 2 (b) is a furnace body panel 20. FIG. 2C is a right side view of the furnace body panel 40. 3, 4, and 5 are views showing short-sized furnace body panels 30, 40, and 50. A furnace panel 10 shown in FIG. 1 is formed by joining a plurality of plate-like refractory pieces 11, 12, and 13. Each refractory piece 11, 12, 13 has a plate shape, and the furnace panel 10 is configured by overlapping each refractory piece 11, 12, 13 in their thickness direction. And the main-body part 10a of the panel 10 for furnace bodies has piled up comparatively thick refractory pieces 11 on the surface and back surface, and was assembled in the substantially rectangular parallelepiped shape, The lap surface of the said surface and back surface applies mortar. By the baking process, the bonding surface 15 is formed by bonding. The side surfaces of the refractory pieces 11, 12, and 13 are not joined but are non-joint surfaces 16. And the size of each refractory piece 11, 12, 13 is determined so that the non-joint surface 16 may not align on a straight line. As a result, the furnace body panel 10 is integrated without being separated. A convex portion 10b is provided at the center of one surface (one surface) of the main body portion 10a. The convex portion 10b is formed so as to extend in parallel to a side (length L) intersecting the one side (length H) from the central portion of one side (length H) of the rectangular parallelepiped main body portion 10a. This refractory piece 12 is fixed to one surface (front surface) of the main body portion 10a by joining the refractory piece 12 to the main body portion 10a on its surface. The side surfaces of the refractory piece 12 are not joined to each other. On the other hand, a concave portion 10c is formed on the surface (back surface) opposite to the convex portion 10b in the main body portion 10a at a position corresponding to the convex portion 10b. The concave portion 10c is formed between the refractory pieces 13 by joining the refractory pieces 13 to both end portions in the direction along the one side of the back surface of the main body portion 10a. The concave portion 10c between the refractory pieces 13 is large enough to fit the convex portion 10b of the adjacent furnace body panel 10, for example, the thickness of the refractory piece 13 is 20 mm and the concave portion 10c When the depth is 20 mm, the thickness of the convex portion 10b is slightly larger than the depth of the concave portion 10c so that the thickness of the refractory piece 12 is 21 mm. The total thickness of the main body 10a and the refractory piece 13 is W. As shown in FIG. 1, a rectangular surface having a width W and a length L is defined as a surface 10d, and an uneven surface having a width W and a length H is defined as a surface 10e. In addition, as shown in FIG.1 (c), the length of the refractory piece 12 in the width direction of the furnace body panel 10 is A, and the refractory piece 12 from the both-sides edge of the width direction of this furnace body panel 30 is shown. The lengths up to are all B. Further, the refractory pieces 13 are provided at both side edges in the width direction of the furnace body panel 30 with a length C from both side edges. Further, the length in the width direction of the furnace body panel 30 is H.

  Similarly, the furnace body panel 20 shown in FIG. 2 is configured by joining a plurality of plate-like refractory pieces 11, 12, and 13. In this furnace body panel 20, the front and back surfaces of the refractory pieces 11, 12, and 13 are joined together by applying mortar and baking, but the side surfaces of the refractory pieces 11, 12, and 13 are joined together. Are not joined. Therefore, the joint surface 15 is formed between the front and back surfaces of the refractory pieces 11, 12, 13, and the non-joint surface 16 is formed between the side surfaces of the refractory pieces 11, 12, 13. In the furnace body panel 20, two sets of thin refractory pieces 12 are arranged on the surface provided with the convex portion 20b so as to be separated from each other. One refractory piece 12 has a length A and is provided at a position separated by a length B from one end in the longitudinal direction of the furnace body panel 40. The three refractory pieces 12 are provided so as to continue from a position separated by a distance from the other end of the furnace body panel 20. The recess 20c of the furnace body panel 20 is connected to both side edges in the width direction of the furnace body panel 20 in the longitudinal direction of the furnace body panel 20 in the same manner as the furnace body panel 10, respectively. A plurality of refractory pieces 13 are arranged. 2C, the length of the refractory piece 12 in the width direction of the furnace body panel 20 is A, and the refractory piece 12 extends from both side edges of the furnace body panel 20 in the width direction. The lengths up to are all B. Further, the refractory pieces 13 are provided at both side edges in the width direction of the furnace body panel 20 with a length C from both side edges. Further, the length in the width direction of the furnace body panel 20 is H.

  The furnace body panel 30 shown in FIG. 3 is formed by stacking three refractory pieces 11, and a refractory piece 13 is joined to one surface of the refractory piece 11 to provide a recess 30 c. Moreover, the furnace body panel 40 shown in FIG. 4 is configured by stacking three refractory pieces 11, and the refractory piece 12 is joined to one surface thereof to provide a convex portion 40 b. is there. Furthermore, the furnace panel 50 shown in FIG. 5 is configured by overlapping three refractory pieces 11 and does not have a convex portion and a concave portion.

  Next, the furnace structure of the first embodiment of the present invention will be specifically described with reference to the accompanying drawings. FIG. 6 is a plan sectional view showing the furnace structure according to the embodiment of the present invention, FIG. 7 is a partial front sectional view thereof, and FIG. 8 is a right sectional side view thereof. 6 is a cross-sectional view taken along line II in FIG. 7, FIG. 7 is a cross-sectional view taken along line II-II in FIG. 6, and FIG. 8 is a cross-sectional view taken along line III-III in FIG. The furnace structure of the present embodiment is obtained by combining the furnace panel 10, 20, 30, 40, 50 shown in FIGS. 1 to 5, as shown in FIGS. 1 to 3, and the bottom wall 3. Three side walls 2 (2a, 2b, 2c) surrounding the bottom wall 3 and a ceiling wall 4 installed on the side walls 2a, 2b, 2c are constructed to constitute the furnace body 1. Further, an opening 5 for taking in and out the processed material to be heat-treated is provided on the front surface of the furnace body 1, and the periphery of the opening 5 is surrounded by the opening frames 2d and 2e. The area of the part 5 is slightly narrower than the space inside the furnace body.

  Next, a furnace building method using these furnace body panels 10, 20, 30, and 40 will be described. 9 and 10 are plan views showing the furnace building method. First, as shown in FIG. 9, the furnace body panel 10 and the furnace body panel 20 are placed on the hearth so that the longitudinal direction thereof is horizontal and the refractory pieces 12 are on the upper surface. That is, two furnace body panels 10 are placed in the longitudinal direction as the lowermost layer of the side wall 2a at the back of the furnace body. Then, the furnace panel 20 is placed at the longitudinal ends of the two furnace panels 10 as the lowermost layer of the side walls 2b and 2c with the longitudinal direction of the furnace panel 20 in the longitudinal direction of the furnace body. Two furnace body panels 10 are placed in front of the furnace body panel 20 so that their longitudinal directions coincide with the furnace body panel 20. Then, as the opening frames 2d and 2e of the opening 5, one furnace body panel 20 is placed at the front end of the furnace body panel 10 so that the longitudinal direction thereof is perpendicular to the furnace body panel 10, and the side of the furnace body Place in the direction. At this time, the single refractory piece 12 is placed outside in the left-right direction of the furnace body.

  Next, as shown in FIG. 10, the furnace body panels 10 and 20 are placed on the furnace body panel arranged as shown in FIG. That is, as the side wall 2a at the back of the furnace body, the three furnace body panels 20, the furnace body panel 10, and the furnace body panel 20 shown in FIG. At this time, one furnace body panel 10 is placed on the middle of the two lower furnace body panels 10 (FIG. 9), and further, the furnace body panels 20 are placed on both sides thereof. Put. At this time, the upper layer of the upper furnace body panel 10 is fitted on the lower surface of the upper furnace body panel 10 so that the convex portion 10b on the upper surface of the lower furnace body panel 10 is fitted into the recess 10c on the lower surface of the upper furnace body panel 10. The furnace body panels 10 are stacked. Further, the furnace body panels 20 are respectively disposed on both sides of the upper furnace body panel 10, and the lower furnace body panel 20 is disposed on the upper surface of the lower furnace body panel 10 and the lower layer furnace body panel 20 at both ends of the furnace wall 2 a. A single refractory piece 12 (convex portion 20 b) is piled up so as to fit into the concave portion 20 c on the lower surface of the upper furnace panel 20. Similarly, the lower-layer furnace 10, 20 b on the upper surface of the lower-layer furnace body panel 10, 20 is fitted into the recesses 10 c, 20 c on the lower surface of the upper-layer furnace body panel 10, 20. The upper-layer furnace body panels 10 and 20 are stacked on the body panels 10 and 20. At this time, in the upper layer, the furnace body panel 20 extends to the front end of the furnace body with respect to the opening part frames 2d and 2e of the furnace body opening part 5, so that the furnace body panel 20 below the opening part frames 2d and 2e. It is necessary that the furnace body panel placed on the furnace body be shorter than the furnace body panels 10 and 20. Therefore, the furnace body panel 10 is cut, and the shortened furnace body panel 10-1 is placed on the lower opening frames 2d and 2e. Also in this case, the protrusion 20b of the lower furnace body panel 20 is fitted into the recess of the upper furnace body panel 10-1.

  In this manner, the furnace body panels 10 and 20 having the pattern shown in FIG. 9 and the furnace body panels 10 and 20 having the pattern shown in FIG. 10 are alternately stacked. Thereby, the side walls 2a, 2b and 2c of the furnace body shown in FIGS. 6 to 8 are constructed. At this time, in the pattern of the lowermost furnace body panel, as shown in FIG. 4, it is preferable to use a furnace body panel 40 having no concave portion on the lower surface and a convex portion 40 b on the upper surface. Further, in the uppermost furnace body panel pattern, as shown in FIG. 3, it is preferable to use a furnace body panel 30 in which there is no convex portion on the upper surface and a concave portion 30c is formed on the lower surface. However, in the lowermost layer and the uppermost layer as well, the furnace body panels 10 and 20 may be used without using the furnace body panel having one flat surface. Further, the furnace body panel 50 shown in FIG. 5 does not have concave and convex portions on the lower surface and the upper surface, but such a furnace body panel 50 can be used depending on the part of the furnace body. is there.

  Next, the bottom wall 3 is constructed in a space surrounded by the side walls 2a, 2b, and 2c. As shown in FIG. 8, the furnace body panel 10 is erected so that the height H of the furnace body panel 10 is in the furnace body height direction, the convex portion 10 b faces the rear of the furnace body, and the concave portion 10 c is the furnace body. The bottom wall 3 is assembled by facing the front of the body so that the convex portions 10b are fitted between the adjacent furnace body panels 10 so as to fit into the concave portions 10c. As can be seen from the comparison between FIG. 9 and FIG. 6, the length of the bottom wall 3 in the furnace body width direction is a length obtained by connecting two furnace body panels 10 in the longitudinal direction. Further, the length of the furnace panel 10 is adjusted so that the portion of the bottom wall 3 between the opening frames 2d and 2e of the opening 5 fits between the opening frames 2d and 2e.

  Next, the ceiling wall 4 is arranged on the side walls 2a, 2b and 2c constructed as described above. As shown in FIG. 8, the ceiling wall 4 is assembled by stacking the furnace panel 10 by fitting the convex portion 10 b to the concave portion 10 c and overlapping the same as the bottom wall 3. From the upper end surface of the back side wall 2a to the upper surfaces of the front opening frames 2d and 2e. The furnace body panel 30 that constitutes the ceiling wall 4 is longer than the furnace body panel 10 that constitutes the bottom wall 3 and is longer than the furnace body panel 10 by using one furnace body panel 10 as the side wall 2b, 2c is bridged on each upper end surface, or a plurality of furnace body panels 10 are connected in the longitudinal direction, and a mandrel is arranged in the center as described later, so that a plurality of furnace body panels 10 are arranged. After making it support, it arrange | positions by spanning on each upper end surface of the side walls 2b and 2c. In this way, the furnace body 1 is completed.

  In the present embodiment, the plurality of furnace body panels 10 (20) having the protrusions 10b (20b) and the recesses 10c (20c) are connected to the protrusions 10b (20b) of the two adjacent furnace body panels 10 (20). ) Are fitted into and connected to the recess 10c (20c), and this is repeated to construct the side walls 2a, 2b, 2c, the bottom wall 3 and the ceiling wall 4 of the furnace body 1, so that no mortar joining work is required. It is easy to build a furnace. The plurality of refractory pieces 11, 12, 13 constituting the furnace body panels 10, 20 are a plane parallel to one surface of the plurality of plate-like refractory pieces 11, 12, 13. Is formed as a joining surface 15 and a surface perpendicular to the joining surface 15 is not joined.

  In the conventional construction work of the furnace body, mortar is applied to the refractories and stacked on the furnace body structure, and then the entire furnace body is heated and baked to bond the refractories to each other. The body is built. For this reason, there exists a possibility that a refractory may crack by a thermal stress at the time of a baking process, and it needs to heat-process carefully, and there exists a problem that construction work and heat processing take time. On the other hand, in this embodiment, first, the furnace body panels 10 and 20 are manufactured. At this time, a joining process is performed in which mortar is applied to the front or back surface of the refractory pieces 11, 12, and 13 and baked, but the side surfaces of the refractory pieces 11, 12, and 13 are not joined. By providing, heat transfer can be prevented at the non-joint surface, and cracking of the furnace body panels 30 and 40 due to thermal expansion can be prevented. During the construction work of the furnace body 1 using these furnace body panels 10 and 20, the use of mortar and its baking treatment are unnecessary, so that problems such as cracking of refractories do not occur. Excellent furnace workability.

  In the present embodiment, the furnace body can be constructed by placing the long furnace body panels 10 and 20 sideways (horizontal) and stacking the other furnace body panels 10 and 20 thereon. The workability when stacking the panels 10 and 20 is excellent, and the height of the furnace body 1 can be arbitrarily set by appropriately adjusting the number of stages in which the furnace body panels 10 and 20 are stacked.

  Next, a furnace structure according to another embodiment of the present invention will be specifically described with reference to the accompanying drawings. 11 is a plan sectional view showing the furnace structure according to the embodiment of the present invention, FIG. 12 is also a partial front sectional view thereof (sectional view taken along line II-II in FIG. 11), and FIG. FIG. FIG. 14 is a cross-sectional view showing a modification when the furnace body panel 10 is used for a ceiling wall. As shown in FIGS. 11 to 13, the furnace body 1 includes a bottom wall 3 and three side walls 2 (2 a, 2 b, 2 c) surrounding the bottom wall 3 by combining a plurality of furnace body panels 10. ) And the ceiling wall 4 installed on the side walls 2a, 2b, and 2c, the furnace body 1 is configured. That is, the bottom wall 3 is configured in a flat plate shape by combining the furnace body panel 10, and the right side wall 2 c is erected on the side of the right edge as viewed from the furnace body opening 5 of the bottom wall 3. The left side wall 2b is erected on the side of the left edge, and the back side wall 2a is erected on the back of the bottom wall 3. And the flat-plate-like ceiling wall 4 is installed on these three side walls 2a, 2b, 2c. The side walls 2a, 2b, 2c and the ceiling wall 4 are also configured in a flat plate shape by combining the furnace body panels 10. In the furnace body 1 configured in this manner, a processed material to be heat-treated is taken in and out through the opening 5.

As described above, the furnace panel 10 has the structure shown in FIGS. Next, a furnace building method using the furnace body panel 10 will be described. First, by fitting the convex portion 10b of the furnace body panel 10 into the concave portion 10c of the adjacent furnace body panel 10, and stacking a plurality of furnace body panels 10 in the same posture, Assemble the walls. At this time, the following seven types of furnace body panels having a length L, a width W, and a height H are used as the furnace body panel 10.
Furnace-body panel 10-1: length _{L 2,} the width W, height H
Furnace panel 10-2: length L ₁ , width W, height H
Furnace panel 10-3: length L ₁ + 2H, width W, height H
Furnace panel 10-4: length L ₂ , width W, height H
Furnace-body panel 10-5: length _L 2 -H, width W, height H
Furnace panel 10-6: length L ₁ , width W, height H
Furnace panel 10-7: length L ₁ -2H (4W), width W, height H
These furnace body panels all have a width W and a height H. For example, the width of the furnace body panel 10-1 and the width of the furnace body panel 10-2 may be different dimensions. good. In addition, when viewed from FIG. 12 and the like, it appears that there is a dimensional relationship of H = 2W, but this is not restrictive.

First, the side wall 2 shown in the plan view of FIG. 11 is assembled. As viewed from the front of the furnace body 1, the side wall 2 is erected so that a left side wall 2 b, a right side wall 2 c, and a back side wall 2 a are formed with a rectangular space in plan view therebetween. To do. At this time, the left and right side walls 2b, 2c is a furnace-body panel 10-1 respectively _{n 1} or use, by superposing them in the W direction, constructed by the combination of _{n 1} pieces of furnace-body panel 10-1 To do. The rear wall 2a is a furnace-body panel 10-1 _{the n 2} used, likewise, superposed in W direction is constructed by a combination of the _{n 2} furnace-body panel 10-1. Thus, in plan view, so that the U-shaped, side walls 2a, 2b, 2c are arranged, the dimensions of the furnace height direction by L _2, the thickness are assembled side wall 2 of the H. In this case, the surface 10d of the furnace body panel 10 becomes the furnace inner surface.

Next, the bottom wall 3 is constructed on the hearth surrounded by the side walls 2a, 2b, and 2c. The bottom wall 3 is constructed by superposing n ₁ furnace body panels 10-2 in the W direction so that the length direction thereof is in the lateral direction of the furnace body. The bottom wall 3 has a dimension of n ₁ W in the furnace body depth direction, which matches the dimension n ₁ W of the side walls 2b and 2c in the furnace body depth direction. The height (thickness) of the bottom wall 3 is H. In this way, the bottom wall 3 of L ₁ × n ₁ W × H is placed on the hearth, surrounded by the side wall 2 in three directions. Also in this case, the surface 10d of the furnace panel 10-2 becomes the furnace inner surface (bottom wall upper surface).

  In the opening 5 of the furnace body, the furnace body panels 10-4, 10-5, 10-6, and 10-7 are assembled in a gate shape and arranged on the front surface of the furnace body 1. As shown in FIG. 12, for example, two left and right furnace body panels 10-4 are placed on the front surfaces of the side walls 2b and 2c and stacked in the furnace body width direction. Next, two left and right furnace body panels 10-5 are placed on the inner side in the facing direction of these furnace body panels 10-4 and are stacked in the furnace body width direction. Then, on the front surface of the bottom wall 3, for example, two furnace body panels 10-7 are arranged on the hearth so that the longitudinal direction thereof is the transverse direction of the furnace body and are stacked in the furnace body depth direction. Further, on the two sets of left and right furnace body panels 10-5, for example, two furnace body panels 10-6 are placed so that the longitudinal direction thereof is the transverse direction of the furnace body and the furnace body is stacked in the depth direction. Put. The furnace body panel 10-5 constitutes the left and right opening frame 2d, and the furnace body panel 10-6 constitutes the upper opening frame 2e. The opening frame 2d and the opening frame 2e constitute a gate-shaped opening frame. Thereby, in the furnace body, the space defined by the bottom wall 3 and the side walls 2 (2a, 2b, 2c) is slightly narrowed by the vertical opening frame 2d and the horizontal opening frame 2e in the opening 5. It is like that.

The ceiling wall 4 is placed on the side wall 2 (2a, 2b, 2c) and the opening frame 2d, 2e. The ceiling wall 4 is constructed using the furnace panel 10-3. That is, the furnace body panel 10-3 is stretched between the side walls 2b and 2c so that the longitudinal direction thereof faces the width direction of the furnace body, and the height H of the furnace body panel 10 is set to be equal to that of the furnace body. Overlay in the depth direction of the furnace body in the height direction. Similarly, the furnace body panel 10-3 is disposed on the back side wall 2a, and further disposed on the furnace body panel 10-4 and the furnace body panel 10-6 on the front surface of the furnace. . In this manner, the ceiling wall 4 having a furnace body lateral dimension of L ₁ + 2H, a furnace body depth dimension of n ₁ W + 2H, and a thickness of H is constructed so as to cover the ceiling of the furnace body. The lower surface of the ceiling wall 4, that is, the furnace inner surface is the surface 10 d of the furnace body panel 10.

  The dimensions of the furnace body panel 10 and the dimensions of the furnace body are arbitrary, and the main furnace body structures such as the bottom wall 3, the side wall 2, and the ceiling wall 4 are all adapted to the desired furnace body dimensions. It can be constructed using the furnace panel 10 having different dimensions. Basically, in the above-described furnace building method, a joining process such as mortar and baking is unnecessary. In this way, a furnace body in which parts other than the opening 5 are covered by the bottom wall 3, the side walls 2 (2a, 2b, 2c), and the ceiling wall 4 can be constructed. In the furnace construction method of the present embodiment, first, the side wall 2 is constructed, and then the bottom wall 3 is constructed. This is because it is necessary to ride on the bottom wall 3, which is inconvenient during work. However, the present invention is not limited to this, and the bottom wall 3 may be constructed first.

  In the present embodiment, since the furnace body is constructed as described above, the furnace body panel 10 has a mass and shape that can be easily held by an operator (for example, the bulk specific gravity is 0.3 and the length L is In the case of about 2 m, the furnace body panel 10 has a mass of 25 kg) and is prepared in advance. At the time of construction, the furnace body panel 10 is basically simply fitted with the convex part 10b into the concave part 10c. They are stacked or stacked without joining such as mortar coating. For this reason, a drying operation is unnecessary at the time of construction. And when producing the furnace body panel 10, the refractory pieces 11, 12, 13 are coated with mortar on the surfaces of the refractory pieces 11, 12, 13, and then baked, so that the furnace body panel 10 is made. 10 is manufactured, but the non-bonding surface 16 between the side surfaces of the refractory pieces 11, 12, 13 is not bonded when the heat of the baking process is applied. For this reason, heat is not transmitted on the non-joint surface 16, and it is prevented that thermal stress due to thermal expansion acts on the refractory pieces 11, 12, 13, and the refractory pieces 11, 12, 13 are cracked. Or it is prevented that a crack generate | occur | produces. Of course, in this embodiment, it is not necessary to use ceramic fibers.

  FIG. 14 is a diagram showing that the ceiling wall 4 is reinforced with a mandrel. The ceiling wall 4 is disposed on the side walls 2b and 2c, which are separated from the furnace body panel 10 (or 20) by a predetermined distance in the furnace body width direction, so as to straddle the side walls 2b and 2c. For this reason, a bending moment acts in the longitudinal direction (L direction) of the furnace body panel 10 in the direction in which the central portion descends. Therefore, as shown in FIG. 14, in the large ceiling wall 4, it is preferable to provide a long mandrel 18 inside the main body 10 a of the furnace body panel 10. The mandrel 18 reinforces the furnace body panel 10 in its longitudinal direction. In the embedding of the mandrel 18, the refractory piece 11 at the center of the three-layer refractory piece 11 for the main body portion 10 a has two short pieces, and a space 17 between the short refractory pieces 11 is provided. The mandrel 18 may be disposed in the center.

  In addition, when the ceiling wall 4 is large, as shown in FIG. 15, two furnace body panels 10 are continuously arranged in the longitudinal direction, and this is used as a refractory furnace body in a normal furnace facility. What is necessary is just to connect so that it may suspend from the outer shell 30 made from the iron plate arrange | positioned so that may be covered. That is, a single mandrel 32 extending in the longitudinal direction is embedded in the interior of the two furnace body panels 10, and is suspended from the top plate of the outer shell 30 via the support member 31. Thus, two furnace body panels 10 can be connected. Thereby, the structure of the ceiling wall 4 can be strengthened.

  Next, a second embodiment of the present invention will be described. In this embodiment, the weight of the furnace panel is further reduced. FIG. 16A is a right side sectional view showing the furnace body panel according to the present embodiment, and FIG. 16B is a front sectional view of the same. In this case, FIG. 16A is a sectional view taken along line AA in FIG. 1B, and FIG. 16B is a sectional view taken along line BB in FIG. 17A and 17B are a plan view and a right side view showing the refractory piece layers 61b, 61d and 61f, and FIGS. 17C and 17D are planes showing the refractory piece layers 61c and 61e. FIGS. 17 (e) and 17 (f) are a front view and a right side view showing the refractory piece layer 61a, and FIGS. 17 (g) and 17 (h) are a front view and a front view showing the refractory piece layer 61g. It is a right view. 17C is a cross-sectional view taken along line CC in FIG. 17D, and FIG. 17D is a cross-sectional view taken along line DD in FIG. The furnace panel 60 of the present embodiment includes a rectangular parallelepiped main body 60a, a protrusion 60b protruding from one surface of the main body 60a, and a recess 60c formed on the other surface of the main body 60a. In the main body portion 60a, a plurality of plate-like refractory pieces 11a and 11b are arranged in a direction parallel to the plane, and are stacked in a direction perpendicular to the plane (up and down) to join the upper and lower refractory pieces together. Has been. The main body 60a is configured by laminating five refractory piece layers 61b, 61c, 61d, 61e, 61f. As shown in FIGS. 17 (a) and 17 (b), the refractory piece layers 61b, 61d and 61f of the furnace panel 60 are formed by placing four thin refractory pieces 11a in a direction parallel to the plane. They are arranged so as to form a rectangle as a whole. For example, the refractory piece layer 61b has a length of 600 mm, a width of 250 mm, and a thickness of 40 mm. Further, as shown in FIGS. 17C and 17D, the refractory piece layers 61c and 61e of the furnace body panel 1 have a thin plate-like refractory piece 11b arranged in a frame shape and a thin plate shape inside thereof. The refractory pieces 11c are arranged so as to be long in the width direction of the refractory piece layer 61c, and the thin plate-like refractory pieces 11d are elongated in the longitudinal direction of the refractory piece layer 61c and the like on both sides of the refractory piece layer 61c. It is arranged and configured as follows. In this case, the sizes of the refractory pieces 11b, 11c, and 11d are determined so that a space (gap 62) is formed between the refractory piece 11b serving as the outer frame and the central refractory piece 11d. It has been. The size of the refractory piece layers 61c and 61e on the outer edge is the same as that of the refractory piece layer 61a and the like. However, the gap 62 is formed at a position avoiding the center of the refractory piece layer 61c or the like, for example, having a width of 45 mm and a length of 220 mm. Further, as shown in FIG. 17 (e), the refractory piece layer 61a is arranged so that the three refractory pieces 12 are continuous in the longitudinal direction. Moreover, as shown in FIG.17 (g), the refractory piece layer 61g is also arrange | positioned so that the three refractory pieces 13 may be continued in the longitudinal direction. This refractory piece layer 13 has a shorter width than the refractory piece layer 12, and as shown in FIG. 16, two refractory pieces 13 are arranged along the edge in the width direction of the furnace panel 60. Sometimes, the refractory piece 12 of another furnace body panel 60 fits between the refractory pieces 13. Moreover, the thickness of the refractory pieces 12 and 13 is 20 mm which is 1/2 of the thickness of the other refractory pieces 11a, 11b, 11c and 11d.

  The furnace panel 60 configured as described above is a main body 60a which is assembled in a substantially rectangular parallelepiped shape by stacking a relatively thick refractory piece 11a and refractory pieces 11b, 11c and 11d on the front and back surfaces thereof. The superposed surfaces of the front and back surfaces of the refractory piece 11a and the refractory pieces 11b, 11c, and 11d are joined by applying mortar and baking, and joined surfaces (in FIG. It is shown). The side surfaces of the refractory pieces 11a, 11b, 11c, and 11d are not joined but are non-joint surfaces. And the size of each refractory piece 11a, 11b, 11c, 11d is determined so that the non-joint surface and the to-be-joined surface and the gap | interval 62 may not align up and down. Moreover, the refractory piece 12 is joined to the center of one surface (upper surface) of the main body 60a to form a convex portion 60b. Furthermore, the refractory pieces 13 are joined to both side edges of the other surface (lower surface) of the main body 60a, and a recess 60c is formed as a gap between the refractory pieces 13. The refractory pieces 12 of the refractory piece layer 61a (see FIG. 17E) and the refractory pieces 13 of the refractory piece layer 61g (see FIG. 17G) are also non-joint surfaces. The size of each refractory piece 11a, 11b, 11c, 11d, 12, 13 is determined so that this non-joint surface does not align vertically with the non-joint surfaces of the refractory piece layers 61b, 61f. Thus, the furnace body panel 60 is integrated without being separated. In addition, the recessed part 60c between the refractory pieces 13 is large enough to fit the convex part 60b of the furnace panel 60 adjacent to the lower side, and for example, the thickness of the refractory piece 13 is 20 mm. When the depth of the concave portion 60c is 20 mm, the thickness of the convex portion 60b is slightly larger than the depth of the concave portion 60c, such that the thickness of the refractory piece 12 is 21 mm. And the whole thickness of the main-body part 60a and the refractory piece 13 becomes the thickness W of the panel 60 for furnace bodies.

  As shown in FIG. 16, the furnace body panel 60 of the present embodiment includes a refractory piece layer 61c having a gap 62 between a refractory piece layer 61b, a refractory piece layer 61d, and a refractory piece layer 61f. , 61e are stacked, a refractory piece layer 61g is disposed at a position along both edges of the lower surface, and a refractory piece layer 61a is disposed at the center of the upper surface. Then, the refractory pieces adjacent to each other (the refractory pieces adjacent to each other in the thickness direction of the refractory piece layer) are joined with an adhesive (shown by a bold line in the figure), and are parallel to the plane of the refractory piece. The refractory pieces adjacent in the direction are not joined but left. That is, in one refractory piece layer, the refractory pieces are left as they are without being joined. Also, as shown in FIGS. 16 (a) and 16 (b), the upper surface refractory pieces overlap each other (surface not joined) and the lower refractory piece overlaps in a direction perpendicular to the plane of the refractory pieces. The size or the like of the refractory piece is adjusted so as to be inconsistent with the overlapping surface or the position of the gap 62. Thus, since the refractory piece layers of each layer are not joined to each other, the refractory pieces are in contact with each other or separated from each other, and each refractory piece 11a, 12, 13 is 1 and the refractory pieces 11b, 11c, 11d of the refractory piece layers 61c, 61e are separated from each other by a large distance enough to form the gap 62, and these refractory pieces 11b, 11c. , 11d are arranged in the second gap. The size of the second gap is larger than that of the first gap. In addition, as a 1st space | interval, when a refractory piece is normally arrange | positioned adjacently at the time of a furnace building, although an adjacent refractory piece will be in the state which mutually contacted, the state which contacted in this way is also included.

  In addition, as shown in the plan view of FIG. 18A, the furnace body panel 1 shown in FIG. 16 and FIG. 17 has three refractory pieces 12 constituting the convex portion 60b of the furnace body panel 60. It is lined up continuously in the longitudinal direction. The outer shape of the furnace body panel is not limited to this. For example, as shown in the plan view of FIG. 18 (b), the square refractory pieces 12 and the rectangular refractory pieces 12 are arranged at appropriate intervals in plan view. (Furnace body panel 64). The other structure of the furnace body panel 64 is the same as that of the furnace body panel 60. The furnace body panel of this embodiment can also take an appropriate external shape according to the furnace construction method.

  The furnace building method using the furnace body panel 60 of the second embodiment and the furnace body structure obtained by the method are the same as those of the furnace building panel 10 using the furnace body panel 10 of the first embodiment. 6 to 15). That is, the furnace body panels 60 and 64 of the present embodiment have the gap 62 therein, but the shape of the appearance is basically the furnace body panel 10 shown in FIG. 1 and FIG. Therefore, the furnace building method and the obtained furnace body structure are not different from the case where these furnace body panels 10 and 20 are used.

  Also in this embodiment, first, the furnace body panels 60 and 64 are manufactured. At this time, the refractory pieces 11 a, 11 b, 11 c, 11 d, 12, and 13 are joined and baked by applying mortar to the front or back surface of the refractory pieces 11 a, 11 b, 11 c, 11 d, 12, 13. By providing the non-joint surface here without joining the side surfaces, heat transfer can be prevented by the non-joint surface, and cracking of the furnace body panels 60 and 64 due to thermal expansion can be prevented. . Further, in the present embodiment, the gap 62 is provided between the refractory piece layers 61b, 61d, 61f made of the refractory piece 11a and the refractory piece layers 61c, 61e made of the refractory pieces 11b, 11c, 11d. In this gap 62, heat transfer can be sufficiently prevented, and cracking of the furnace body panels 60 and 64 due to thermal expansion can be reliably prevented. Furthermore, by providing a space including the gap 62, the mass of the furnace panel 60, 64 can be reduced. At the time of building a furnace body using these furnace body panels 60 and 64, the use of mortar and its baking treatment are unnecessary, so that problems such as cracking of the refractory do not occur, and the workability of the furnace construction Is excellent.

  Also in the present embodiment, the furnace body can be constructed by placing the long furnace body panels 60 and 64 sideways (horizontal) and stacking the other furnace body panels 60 and 64 thereon. The workability when stacking the panels 60 and 64 is excellent, and the height of the furnace body can be arbitrarily set by appropriately adjusting the number of stages for stacking the furnace body panels 60 and 64. Since the furnace body panels 60 and 64 have the gap 62 and are lighter than the furnace body panels 10 and 20, it is possible to further improve the workability when the worker constructs the furnace.

  Next, a furnace body panel according to another embodiment of the present invention will be described. 19 (a) is a plan view showing a furnace body panel 65 according to another embodiment, FIG. 19 (b) is a cross-sectional view taken along line BB of FIG. 19 (a), and FIG. 19 (c) is a front view. FIG. The refractory piece 17 of the furnace panel 65 is a thin plate having a rectangular shape in plan view. As shown in FIGS. 20A to 20C, the refractory piece layers 1a, 1c, and 1e are five refractory pieces. The object piece 17a is arranged continuously in the short side direction. Further, as shown in FIGS. 20D to 20F, the refractory piece 18a has a long plate shape with a narrow width in a plan view, and these refractory pieces 18a are arranged in a frame shape, Five gaps 19a are provided on the inner side excluding the portion. And these refractory piece layers 1a-1e are piled up, and the overlapping surface between them is joined, and the panel 65 for furnace bodies is formed. In the furnace body panel 65, a large gap 19a is provided in the refractory piece layers 1b and 1d, and a large space is formed in the furnace body panel 65. Similarly to the furnace panel panels 60 and 70, the furnace panel 65 of the present embodiment can effectively suppress heat conduction and can be reduced in weight.

  Next, a furnace body panel according to still another embodiment of the present invention will be described. 21A is a plan view showing the furnace body panel 66 according to this embodiment, FIG. 21B is a right side view of FIG. 21A, and FIG. 21C is a front view. As shown in FIGS. 22 (a) to 22 (c), the upper refractory piece layer 1a of the furnace body panel 66 is composed of six pieces of refractory pieces 17b made of a rectangular thin plate in plan view. And arranged in the short side direction. Further, as shown in FIGS. 22D to 22F, the second refractory piece layer 1b from the top has an elongated refractory piece 18b, a slightly wider refractory piece 18c, and a slightly longer refractory piece 18d. Are arranged in a frame shape, a narrow refractory piece 18e is arranged between the refractory pieces 18c, 18d, and six gaps 19b are provided inside except the edge portion. Also in the furnace body panel 66, a large gap 19b is provided in the refractory piece layers 1b and 1d, and a large space is formed in the furnace body panel 66. Similarly to the furnace body panel panels 60 and 70, the furnace body panel 66 of the present embodiment can effectively suppress heat conduction and can be reduced in weight.

  These furnace body panels 65 and 66 do not have protrusions and recesses, and have a flat plate shape as a whole. Such flat furnace body panels 65 and 66 can be used as, for example, the bottom wall 3 of the furnace body shown in FIGS. 6 to 8 or the furnace body shown in FIGS. 11 to 13.

  Next, a furnace body panel according to still another embodiment of the present invention will be described. FIG. 23 is a view showing the furnace body panel 70 of this embodiment, FIG. 23 (a) is a front view, FIG. 23 (b) is a right side view, and FIG. 23 (c) is a plan view. In the furnace body panel 70, the main body part 70a has a rectangular parallelepiped shape like the main body part 10a of the furnace body panel 10, and a plurality of flat refractory pieces 11 are arranged in a direction parallel to the plane, It is configured to overlap in the thickness direction. Similarly to the main body part 10a, the main body part 70a does not join the refractory pieces adjacent to each other in the direction parallel to the plane, and joins the refractory pieces overlapping in the thickness direction. In the present embodiment, the thin refractory piece 12 is overlapped and bonded to one surface of the main body portion 70a, and the thin refractory piece 13 is overlapped and bonded to the other surface to thereby respectively form the first convex portion 70b and the first protrusion. Two convex portions 70c are formed. The side walls of the refractory pieces 11, 12, 13 are not joined to each other, and their boundaries are provided at inconsistent positions between the layers of the refractory pieces adjacent in the thickness direction. . And in this embodiment, the refractory pieces 12 and 13 are arrange | positioned in the half area | region in both surfaces of the main-body part 70a. In other words, the refractory pieces 12 and 13 are arranged in such a manner that they are half the width direction in the plane of the main body 70a and overlap the entire area in the longitudinal direction of the plane. In the present embodiment, both the refractory piece 12 and the refractory piece 13 are disposed along one edge in the width direction of the main body 70a.

  Next, a furnace building method and a furnace structure using the furnace body panel 70 and the furnace body panels 10 and 20 will be described. FIG. 24 is a right side sectional view showing the furnace structure, and FIG. 25 is a front sectional view thereof. In the furnace building method of this embodiment, the side walls 2a, 2b and 2c of the furnace body are constructed using the furnace body panels 10 and 20 in the same manner as the method shown in FIGS. In the present embodiment, the bottom wall 3 and the ceiling wall 4 of the furnace body are constructed using the furnace body panel 70. That is, the bottom wall 3 is placed on the floor surface with the first convex portion 70b and the second convex portion 70c of the furnace body panel 70 being the lower half, and the adjacent furnace body panel 70 is the first convex portion. 70b and the second convex part 70b are placed on the floor surface with the upper half part engaged, and the first convex part 70b is engaged with the second convex part 70c of the adjacent furnace body panel 70, and the furnace body panel 70 is arranged. In this manner, the furnace panel 70 has the first convex portion 70b and the second convex portion 70c in the lower half, the first convex portion 70b and the second convex portion 70c in the upper half, The projecting part 70b and the second projecting part 70c are arranged so as to be in the lower half part, and the first projecting part 70b and the second projecting part 70c of the adjacent furnace body panel 70 are engaged, The plurality of furnace body panels 70 support each other in the vertical direction, and maintain a flat plate shape as a whole. Similarly, with respect to the ceiling wall 4, the first convex portion 70 b and the second convex portion 70 c of the furnace panel 70 are placed on the upper end surface of the side wall 2 with the first convex portion 70 b and the second convex portion 70 c being placed in the lower half. The furnace body panel 70 is placed so that the first convex portion 70b and the second convex portion 70b are in the upper half portion and is bridged on the upper end surface of the side wall 2, and the first convex portion 70b is adjacent to the furnace body. The furnace panel 70 is arranged so as to be engaged with the second convex portion 70c of the panel 70 for operation. Thus, like the bottom wall 3, the furnace body panels 70 support each other in the vertical direction, so that the planar shape is maintained and the furnace body panel 70 is disposed on the furnace body ceiling. In the present embodiment, for example, with respect to the ceiling wall 4, an operator simply places the ceiling wall 4 on the upper end surface of the side wall 2 with the furnace body panels 70 alternately reversed in the vertical relationship. Since it can be constructed, construction is easier than in the case where the convex portion is fitted on the concave portion and arranged on the upper end surface of the side wall 2 as in the furnace body panels 10 and 20. Accordingly, the furnace body panel 70 of the present embodiment is particularly suitable when the ceiling wall 4 is constructed.

  Next, a furnace panel 80 according to another embodiment of the present invention will be described with reference to FIG. In this embodiment, the main body portion of the furnace panel 80 has five refractory pieces 11a arranged in the width direction, and four short refractory pieces between the two refractory pieces 11a. 11b and 11b are arranged. And in this refractory piece layer of the central layer, a gap 82 is formed between the refractory piece 11b and the refractory piece 11b. Thereby, also in this embodiment, similarly to the furnace body panels 60 and 70, it is possible to reduce the weight of the furnace body panel itself and to prevent cracking by suppressing heat transfer.

  27 is a view showing a furnace body panel 90 according to another embodiment of the present invention, in which (a) is a front view, (b) is a side sectional view, and (c) is a plan view. The five refractory pieces 11a shown in FIGS. 28A and 28B are arranged in the width direction, and the eight refractory pieces 11c shown in FIGS. 28E and 28F are arranged in the horizontal and vertical directions. The main body is constructed by sandwiching the layers of the refractory pieces 11b shown in FIGS. 28C and 28D between the layers of the refractory pieces 11a and the refractory pieces 11c. Yes. The refractory piece 11b constitutes a frame and a bar disposed in the frame, and a gap 92 is formed between the frame and the bar. Moreover, the 1st convex part and the 2nd convex part are respectively comprised by arrange | positioning the three refractory pieces 12 and 13 in a longitudinal direction. Thereby, also in this embodiment, similarly to the furnace body panels 60 and 70, it is possible to reduce the weight of the furnace body panel itself and to prevent cracking by suppressing heat transfer.

  FIG. 29 is a view showing a furnace body panel 100 according to another embodiment of the present invention, in which (a) is a front view, (b) is a side cross-sectional view, and (c) is a plan view. The difference between this embodiment and the furnace body panel 90 shown in FIGS. 27 and 28 is that, as shown in FIGS. 29 (b), 30 (e), and (f), four refractories arranged side by side. The object piece 11c and the four refractory pieces 11c arranged side by side are arranged apart from each other vertically, and a gap is formed between them. Thereby, since the gap is provided also in the center part of the panel 100 for furnace bodies, weight reduction of the refractory for furnace bodies and prevention of heat transfer are achieved further.

2, 2a, 2b, 2c: Side walls 2d, 2e: Opening frame 3: Bottom wall 4: Ceiling wall 5: Openings 10, 20, 30, 40, 50, 60, 64, 65, 66, 70, 80, 90, 100: Furnace panels 11, 12, 13: Refractory pieces 10a, 20a, 60a, 70a: Main body portions 10b, 20b, 60b: Convex portions 10c, 20c, 60c: Concave portions 70a: Main body portion 70b: First Convex part 70c: second convex part

Claims (15)

A plurality of plate-like refractory pieces are arranged in a direction parallel to the plane and overlapped in a direction perpendicular to the plane, and a boundary between the refractory pieces adjacent to the direction parallel to the plane is perpendicular to the plane. The refractory pieces adjacent to each other are arranged so as not to coincide with the boundary between the refractory pieces adjacent to each other, the faces parallel to the plane are joined, and the refractory pieces adjacent to the direction parallel to the plane are not joined. The assembled furnace body panel,
The overall shape constituted by the whole of the plurality of refractory pieces is a main body part having a rectangular parallelepiped shape, a convex part projecting from the center of a plane parallel to the plane of the main body part, and the convex part in the main body part. Having a concave portion formed on the surface opposite to the surface on which the portion is formed, corresponding to the convex portion,
For use in a furnace body characterized in that the convex part of one furnace body panel is fitted into the concave part of another furnace body panel, and a plurality of furnace body panels are overlapped. panel. A plurality of plate-like refractory pieces are arranged in a direction parallel to the plane and overlapped in a direction perpendicular to the plane, and a boundary between the refractory pieces adjacent to the direction parallel to the plane is perpendicular to the plane. The refractory pieces adjacent to each other are arranged so as not to coincide with the boundary between the refractory pieces adjacent to each other, the faces parallel to the plane are joined, and the refractory pieces adjacent to the direction parallel to the plane are not joined. The assembled furnace body panel,
The boundary between the refractory pieces adjacent to each other in a direction parallel to the plane is a small first gap, at least a part of which includes contact between the refractory pieces, and a second gap whose other part is larger than the first gap. And
The overall shape constituted by the whole of the plurality of refractory pieces is a main body part having a rectangular parallelepiped shape, a convex part projecting from the center of a plane parallel to the plane of the main body part, and the convex part in the main body part. Having a concave portion formed on the surface opposite to the surface on which the portion is formed, corresponding to the convex portion,
For use in a furnace body characterized in that the convex part of one furnace body panel is fitted into the concave part of another furnace body panel, and a plurality of furnace body panels are overlapped. panel. A plurality of plate-like refractory pieces are arranged in a direction parallel to the plane and overlapped in a direction perpendicular to the plane, and a boundary between the refractory pieces adjacent to the direction parallel to the plane is perpendicular to the plane. The refractory pieces adjacent to each other are arranged so as not to coincide with the boundary between the refractory pieces adjacent to each other, the faces parallel to the plane are joined, and the refractory pieces adjacent to the direction parallel to the plane are not joined. The assembled furnace body panel,
The overall shape constituted by the whole of the plurality of refractory pieces is a main body part having a rectangular parallelepiped shape, a first convex part protruding from a half region of a surface parallel to the plane of the main body part, and the main body A second convex portion projecting from a half region of the surface on the opposite side of the surface on which the first convex portion is formed.
For use in which a plurality of furnace body panels are overlapped by engaging the first convex part of one furnace body panel with the first convex part or the second convex part of another furnace body panel. A furnace body panel characterized by being used. A plurality of plate-like refractory pieces are arranged in a direction parallel to the plane and overlapped in a direction perpendicular to the plane, and a boundary between the refractory pieces adjacent to the direction parallel to the plane is perpendicular to the plane. The refractory pieces adjacent to each other are arranged so as not to coincide with the boundary between the refractory pieces adjacent to each other, the faces parallel to the plane are joined, and the refractory pieces adjacent to the direction parallel to the plane are not joined. The assembled furnace body panel,
The boundary between the refractory pieces adjacent to each other in a direction parallel to the plane is a small first gap, at least a part of which includes contact between the refractory pieces, and a second gap whose other part is larger than the first gap. And
The overall shape constituted by the whole of the plurality of refractory pieces is a main body part having a rectangular parallelepiped shape, a first convex part protruding from a half region of a surface parallel to the plane of the main body part, and the main body A second convex portion projecting from a half region of the surface on the opposite side of the surface on which the first convex portion is formed.
For use in which a plurality of furnace body panels are overlapped by engaging the first convex part of one furnace body panel with the first convex part or the second convex part of another furnace body panel. A furnace body panel characterized by being used. The refractory pieces arranged in a direction parallel to the plane constitute a refractory piece layer, and a plurality of the refractory piece layers are stacked to constitute the furnace body panel,
5. The furnace panel according to claim 2, wherein the second gap is provided every other layer of the refractory piece layers. A plurality of plate-like refractory pieces are arranged in a direction parallel to the plane and overlapped in a direction perpendicular to the plane, and a boundary between the refractory pieces adjacent to the direction parallel to the plane is perpendicular to the plane. The refractory pieces adjacent to each other are arranged so as not to coincide with the boundary between the refractory pieces adjacent to each other, the faces parallel to the plane are joined, and the refractory pieces adjacent to the direction parallel to the plane are not joined. The assembled furnace body panel,
The boundary between the refractory pieces adjacent to each other in a direction parallel to the plane is a small first gap, at least a part of which includes contact between the refractory pieces, and a second gap whose other part is larger than the first gap. A furnace panel characterized by the above. Built using a plurality of furnace body panels according to any one of claims 1 to 5,
When the furnace body panel has the protrusions and the recesses, the plurality of furnace body panels are formed by fitting the protrusions of one furnace body panel into the recesses of another furnace body panel. Or when the furnace panel has the first and second protrusions, the first protrusion of one furnace body panel is the first protrusion of another furnace body panel. At least one of the side wall, the bottom wall, and the ceiling wall of the furnace body is constructed by overlapping the plurality of furnace body panels by engaging with the convex part or the second convex part. Furnace structure. The furnace body panel is arranged with the convex portion and the concave portion or the first convex portion and the second convex portion of the furnace body panel facing the height direction of the furnace body, and in this state, a plurality of furnaces are disposed. The furnace body structure according to claim 7, wherein the side walls of the furnace body are constructed by stacking body panels. The furnace body panel is arranged with the convex part and the concave part or the first convex part and the second convex part of the furnace body panel facing the depth direction or the width direction of the furnace body. The furnace body structure according to claim 7, wherein the side wall of the furnace body is constructed by stacking the furnace body panels in a depth direction or a width direction of the furnace body. The furnace body panel is arranged with the convex part and the concave part or the first convex part and the second convex part of the furnace body panel facing the depth direction of the furnace body, and in this state, a plurality of furnace bodies The furnace body structure according to claim 8 or 9, wherein the bottom wall and the ceiling wall of the furnace body are constructed by stacking panels for use in a depth direction of the furnace body. The furnace body structure according to any one of claims 7 to 10, wherein a reinforcing mandrel is inserted in the center of the main body of the furnace body panel constituting the ceiling wall. When a plurality of furnace body panels according to any one of claims 1 to 5 are prepared and the furnace body panel has the protrusions and the recesses, the protrusion of one furnace body panel is provided. When the portion is fitted into the concave portion of another furnace body panel and the plurality of furnace body panels are overlapped , or the furnace body panel has the first convex portion and the second convex portion , By superimposing the plurality of furnace body panels by engaging the first convex part of one furnace body panel with the first convex part or the second convex part of another furnace body panel , A furnace construction method comprising constructing at least one of a side wall, a bottom wall and a ceiling wall of a furnace body. The furnace body panel is arranged with the convex portion and the concave portion or the first convex portion and the second convex portion of the furnace body panel facing the height direction of the furnace body, and in this state, a plurality of furnaces are disposed. The furnace building method according to claim 12, wherein the side walls of the furnace body are constructed by stacking body panels. The furnace body panel is arranged with the convex part and the concave part or the first convex part and the second convex part of the furnace body panel facing the depth direction or the width direction of the furnace body. The furnace building method according to claim 12, wherein the side wall of the furnace body is constructed by stacking the furnace body panels in a depth direction or a width direction of the furnace body. The furnace body panel is arranged with the convex part and the concave part or the first convex part and the second convex part of the furnace body panel facing the depth direction of the furnace body, and in this state, a plurality of furnace bodies The furnace building method according to claim 13 or 14, wherein the bottom wall and the ceiling wall of the furnace body are constructed by overlapping panels for use in a depth direction of the furnace body.

Images