JPH0642878A - Furnace body structure and block furnace material - Google Patents

Abstract

PURPOSE:To obtain a safe furnace body structure in which molten metal is not leaked out of the body. CONSTITUTION:A block furnace material 10 in which a refractory layer 12 is integrally formed with inside and a heat insulation layer 13 is integrally formed with outside is formed in a predetermined furnace shape by connecting its side to upper and lower surfaces. Further, a recess 15 is formed on the side of the material, and a refractory material 20 is filled in the recess.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a furnace body structure and a block furnace material.

[0002]

2. Description of the Related Art Generally, in constructing a so-called reverberatory furnace such as a metal melting furnace for aluminum or the like, a glass melting furnace or a heat treatment furnace, as shown in FIG. 6, a block made of a refractory material and a heat insulating material from the inside of the furnace. The furnace material 60 is connected and joined by a refractory material or the like and stacked in a predetermined furnace shape. Then, the outside of the furnace body is covered with an outer shell member 61 such as a metal plate.

However, in such a furnace body structure, the molten metal in the furnace may penetrate into the furnace body through the joint gap of the block furnace material and finally reach the outer shell material 61. At times, as shown in the figure, the infiltrated molten metal may cause the outer shell member 61 to expand and become red hot, resulting in an extremely dangerous state.

[0004]

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems, and is a safe furnace body structure for preventing the molten metal from penetrating to the outside of the furnace body, and a safe furnace body structure thereof. It is intended to provide a block furnace material for constructing such a furnace body.

[0005]

That is, there are two inventions proposed here. The first invention is a block furnace material in which a refractory layer is integrally formed on the inside of the furnace and a heat insulating layer is formed on the outside thereof. The side surface side and the upper and lower surface side are connected to each other to be constructed in a predetermined furnace shape, and a concave portion is formed on the side surface side to which the block furnace material is connected, and the concave portion is filled with a refractory material. The second aspect of the present invention relates to a furnace body structure characterized in that a refractory layer is formed on the inside of the furnace, and a heat insulating layer is integrally formed on the outside. The present invention relates to a block furnace material characterized in that

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings. 1 is a sectional view of a furnace showing an example of a furnace body structure of the present invention, FIG. 2 is a perspective view showing a connected state of block furnace materials, FIG. 3 is a sectional view showing an example of block furnace materials of the present invention, FIG.
Is a sectional view showing another example, and FIG. 5 is an enlarged sectional view of an essential part showing a state in which molten metal is held by the furnace structure of the present invention.

As shown in FIGS. 1 and 2, in the furnace body structure of the present invention, a plurality of block furnace materials 10 formed into a substantially cubic shape or a substantially rectangular parallelepiped shape are connected through a bonding material made of a known refractory material. The side surfaces 11, 11 and the upper and lower surfaces, which are not shown, are connected and stacked to form a furnace body having a predetermined shape. In this embodiment, the block furnace material 10 is 300 mm × 300 mm × 300 mm
Is formed into a substantially cubic shape. Reference numeral 17 is an outer shell material such as a metal plate that covers the outside of the furnace body.

The block furnace material 10 has a refractory layer 12 inside the furnace.
A heat insulating layer 13 is arranged outside the furnace to be integrally formed, and a recess 15 is provided on the side surface side 11. The concave portion 15 is for filling the refractory material 20 described later, and the refractory material 20 is filled in the void 16 formed by the concave portion 15a of the adjacent block furnace material 10a. In this embodiment, the recess 15 is formed with a width of 50 mm and a depth of 25 mm with respect to the block furnace material 10, and the recess 15a of the adjacent block furnace material 10a constitutes a 50 mm square void.

The refractory layer 12 of the block furnace material 10 is made of Al ₂ O.
_It is made of a known refractory material containing a compound of ₃ and SiO ₂ or a compound of ZrO ₂ and SiO ₂ as a main component, and is placed inside the furnace of the block furnace material 10 and can withstand a high temperature of 1500 ° C. to 2000 ° C. In this embodiment, the refractory layer 12 has a thickness of 65 mm.

The heat insulating layer 13 is made of calcium silicate or the like and is arranged outside the furnace of the block furnace material 10 and formed integrally with the refractory layer 12. The fire resistance of the heat insulating layer 13 is approximately 600 ° C to 1000 ° C.

A refractory material 20 filled in the recess 15.
Is a known refractory material forming the refractory layer 12, or 6
Al ₂ O ₃ and S with refractory of 00 ° C to 1200 ° C
It is made of a refractory heat insulating material such as a compound of iO ₂ , and various refractory material shapes such as a non-standard product and a standard product are selected depending on the type of furnace to be constructed and the required fire resistance.

When the refractory material 20 has an indefinite shape such as powder or paste, the refractory material 20 is connected to the concave portions 15, 15 of the block furnace material 10, 10a.
The space 16 formed by a is filled. Further, when the refractory material 20 is a standard product, it is molded into the size of the void 16 and is filled in the void 16 via a bonding material as shown in FIG.

FIG. 3 shows an example of a block furnace material used in the furnace body structure of the present invention. The block furnace material 30 is composed of a furnace material main body 34 in which a refractory layer 31 arranged inside the furnace and a heat insulating layer 32 arranged outside the furnace are integrally formed through a refractory heat insulating layer 33. The concave portions 35 for filling the refractory material are formed in the portions 37, 37. The refractory heat insulating layer 33 is made of a compound of Al ₂ O ₃ and SiO ₂ and has a fire resistance of 600 ° C. to 1200 ° C.

FIG. 4 shows another example of the block furnace material. In the block furnace material 40 shown here, the heat insulating layer is formed by a single layer 42. Reference numeral 41 is a refractory layer, and 45 is a recess.

FIG. 5 shows the molten metal holding state using the furnace structure and the block furnace material of the present invention. The molten metal M exudes outward from the gap between the block furnace materials 10, 10, 10 ... Also, the refractory material 20 filled in the recesses 15 formed on both side surfaces 11 of the block furnace material 10 prevents the molten metal M from permeating outside the furnace body.

[0016]

As shown and described above, according to the furnace body structure and the block furnace material of the present invention, the molten metal in the furnace is prevented from permeating to the outside of the furnace. It is possible to provide a safe furnace without penetrating to the outside and expanding the outer shell or causing red heat.

[Brief description of drawings]

FIG. 1 is a sectional view of a furnace showing an example of a furnace body structure of the present invention.

FIG. 2 is a perspective view showing a connected state of block furnace materials.

FIG. 3 is a sectional view showing an example of a block furnace material of the present invention.

FIG. 4 is a cross-sectional view showing another example.

FIG. 5 is an enlarged sectional view of an essential part showing a state in which molten metal is held by the furnace structure of the present invention.

FIG. 6 is a cross-sectional view of a main part showing an example of a conventional furnace body structure.

[Explanation of symbols]

 10 Block Furnace Material 11 Side Side 12 Refractory Layer 13 Heat Insulation Layer 15 Recess 20 Refractory Material

Claims (2)

[Claims] 1. A block furnace material integrally formed with a refractory layer on the inside of the furnace and a heat insulating layer on the outside is constructed in a predetermined furnace shape by connecting the side surface side and the upper and lower surface sides thereof, and the block furnace material. A furnace body structure, characterized in that a concave portion is formed on the side surface side of which is connected and the concave portion is filled with a refractory material. 2. A block furnace material comprising a furnace material body integrally formed with a refractory layer on the inner side of the furnace and a heat insulating layer on the outer side of the furnace body, and recesses for filling the refractory material formed on both side surfaces.