CN112225540A - Refractory brick with stable structure and preparation method thereof - Google Patents
Refractory brick with stable structure and preparation method thereof Download PDFInfo
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- CN112225540A CN112225540A CN202011132372.1A CN202011132372A CN112225540A CN 112225540 A CN112225540 A CN 112225540A CN 202011132372 A CN202011132372 A CN 202011132372A CN 112225540 A CN112225540 A CN 112225540A
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- parts
- bottom frame
- frame body
- cover plate
- connecting layer
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- 239000011449 brick Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 42
- 238000003780 insertion Methods 0.000 claims abstract description 13
- 230000037431 insertion Effects 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 67
- 238000010304 firing Methods 0.000 claims description 52
- 239000004927 clay Substances 0.000 claims description 33
- 239000000395 magnesium oxide Substances 0.000 claims description 33
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 33
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 33
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 21
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 21
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 20
- 239000005995 Aluminium silicate Substances 0.000 claims description 17
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 claims description 17
- 235000012211 aluminium silicate Nutrition 0.000 claims description 17
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 17
- YJIBHPVNTVUEPU-UHFFFAOYSA-N thorium(iv) sulfide Chemical compound S=[Th]=S YJIBHPVNTVUEPU-UHFFFAOYSA-N 0.000 claims description 17
- 229910052582 BN Inorganic materials 0.000 claims description 16
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 16
- 235000011837 pasties Nutrition 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000000378 calcium silicate Substances 0.000 claims description 10
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 10
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical group [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000004806 packaging method and process Methods 0.000 claims description 7
- 230000009970 fire resistant effect Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000010422 painting Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims 4
- 238000004064 recycling Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000003837 high-temperature calcination Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
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Abstract
The invention discloses a structurally stable refractory brick and a preparation method thereof, wherein the refractory brick comprises a bottom frame body, a connecting layer, a closed cover plate, a support frame and refractory heat-insulating powder; according to the invention, the supporting frames in the isosceles trapezoid structures with the large upper parts and the small lower parts are respectively inserted into the insertion grooves in the bottom frame body, so that the strength of the whole structure is greatly improved through the structural characteristics of the isosceles trapezoids.
Description
Technical Field
The invention relates to a refractory brick with a stable structure and a preparation method thereof.
Background
The existing refractory brick is generally a refractory material with fixed shape and size, is an integral hard block, is generally used in the fields of building and chemical engineering, and bears physicochemical change and mechanical action to a certain extent under the condition of high temperature. Most of the refractory brick materials in the market at present need high-temperature calcination, the high-temperature calcination period is long, the energy consumption is large, the production cost is high, and the production efficiency is low; and need breakage when resistant firebrick retrieves after using a period of time, the broken recovery processing's of the stereoplasm block of integral type degree of difficulty is big.
Disclosure of Invention
Aiming at the defects of the prior art, the invention solves the problems that: provides a structure-stable refractory brick with high structural strength, short production period, high production efficiency and convenient recovery and a preparation method thereof.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a refractory brick with a stable structure comprises a bottom frame body, a connecting layer, a closed cover plate, a support frame and refractory heat-insulating powder; the bottom frame body is of a structure with the periphery, the bottom and the upper end being closed; the supporting frame is of an isosceles trapezoid structure with a large upper part and a small lower part; a plurality of support frames are uniformly arranged in the bottom frame body; a plurality of inserting grooves are uniformly formed in the middle of the lower part of the inner part of the bottom frame body; a support frame is respectively inserted in the insertion grooves at the lower part in the bottom frame body; the bottom frame body and the upper end of the support frame are provided with connecting layers; a closed cover plate is arranged at the upper end of the connecting layer; heat-insulating refractory powder is filled in the bottom frame body; the bottom frame body and the closed cover plate comprise the following components in parts by weight: 10-20 parts of titanium boride, 10-15 parts of thorium sulfide, 5-10 parts of kaolin, 10-15 parts of bound clay and 30-40 parts of magnesium oxide; the connecting layer comprises the following components in parts by weight: clay 10-20 parts, hexagonal boron nitride 5-10 parts, nano alumina 5-10 parts, silicon carbide 20-25 parts, and magnesium oxide 20-25 parts are combined; the supporting frame is made of silicon carbide material; the fire-resistant heat-insulating powder is calcium silicate powder.
Further, 3 to 10 support frames are installed inside the bottom frame body.
Further, the bottom frame body and the closed cover plate comprise the following components in parts by weight: 15 parts of titanium boride, 13 parts of thorium sulfide, 8 parts of kaolin, 12 parts of bound clay and 35 parts of magnesium oxide.
Further, the connecting layer comprises the following components in parts by weight: 15 parts of clay, 8 parts of hexagonal boron nitride, 7 parts of nano alumina, 22 parts of silicon carbide and 22 parts of magnesium oxide.
A preparation method of a refractory brick with a stable structure comprises the following steps:
s1, preparing a bottom frame body: fully stirring titanium boride, thorium sulfide, kaolin, bonded clay and magnesium oxide with water according to a ratio to obtain a bottom frame paste material, feeding the bottom frame paste material into a forming machine, performing compression forming in a mold, and feeding the bottom frame paste material into a tunnel kiln for firing to form a bottom frame;
s2, preparing a closed cover plate: fully stirring titanium boride, thorium sulfide, kaolin, bonded clay and magnesium oxide with water according to a ratio to obtain a closed cover plate pasty material, feeding the closed cover plate pasty material into a forming machine, performing compression forming in a mold, and feeding the closed cover plate pasty material into a tunnel kiln for firing to form a closed cover plate;
s3, assembling: the supporting frames in an isosceles trapezoid structure with a large upper part and a small lower part are respectively inserted into the insertion grooves in the bottom frame body, the upper end surfaces of the supporting frames are flush with the upper end surface of the bottom frame body, and then the bottom frame body is filled with refractory heat-insulating powder;
s4, bonding and firing of the connecting layer: fully stirring the combined clay, hexagonal boron nitride, nano aluminum oxide, silicon carbide and magnesium oxide with water according to a ratio to obtain a connecting layer paste, painting the connecting layer paste on the lower end face of the closed cover plate, packaging the connecting layer paste on the lower end face of the closed cover plate on the upper end faces of the bottom frame body and the support frame, and then sending the connecting layer paste into a tunnel kiln for firing so that the connecting layer is solidified and connected.
Further, the water-material ratio in the step S1 is 1: 5-10; the high-temperature firing temperature in the tunnel kiln is 1200-1400 ℃, and the firing temperature is 40-50 min.
Further, the water-material ratio in the step S2 is 1: 5-10; the high-temperature firing temperature in the tunnel kiln is 1200-1400 ℃, and the firing temperature is 30-40 min.
Further, the refractory heat-insulating powder in the step S3 is calcium silicate powder.
Further, the water-material ratio of the connecting layer configuration in the step S4 is 1: 8-12; the high-temperature firing temperature in the tunnel kiln is 600-800 ℃, and the firing temperature is 20-30 min.
The invention has the advantages of
1. The supporting frames which are in the isosceles trapezoid structures with the large upper parts and the small lower parts are respectively inserted into the insertion grooves in the bottom frame body, so that the strength of the whole structure is greatly improved through the structural characteristics of the isosceles trapezoids, and meanwhile, the assembling speed and efficiency are improved; the invention greatly shortens the whole firing time, and the area of the whole structure hard block structure is greatly reduced by using the filled refractory heat-insulating powder as a refractory heat-insulating medium.
2. In order to improve the adhesion between the sealing cover plate and the bottom frame body and the upper end surface of the support frame, according to the component proportion of the closed cover plate and the component proportion of the bottom frame body and the support frame, a connecting layer which combines clay, hexagonal boron nitride, nano-alumina, silicon carbide and magnesium oxide is selected as the proportion, the silicon carbide which is the same as the material of the support frame is selected as the component of the connecting layer, the magnesium oxide which is the same as the components of the bottom frame body and the closed cover plate is selected as the component, thus improving the material cooperativity of the connecting layer, the supporting frame, the bottom frame body and the sealing cover plate, the bonding area and strength of the connection layer are improved by the hexagonal crystal of hexagonal boron nitride and high strength, through nanometer aluminium oxide and combination clay improvement articulamentum's porous adsorption characteristic and adhesion nature, so through the cooperation of each component very big reinforcing the joint strength of closing the apron with bottom framework and support frame up end.
3. The integral structure of the traditional refractory brick is changed, the structure for packaging the closed cover plate and the bottom frame body is adopted, the interior of the bottom frame body is filled with refractory heat-insulating powder as a refractory heat-insulating medium, in order to improve the strength of the whole structure, a plurality of support frames are arranged in the bottom frame body to serve as internal strength frameworks, the closed cover plate and the bottom frame body are fired, cured and connected through a connecting layer serving as a connecting medium, and the refractory heat-insulating powder is filled in the whole structure, so that the difficulty in recycling and crushing of the whole structure is greatly reduced, and the recycling is convenient.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1
As shown in figure 1, the refractory brick with a stable structure comprises a bottom frame body 1, a connecting layer 4, a closed cover plate 2, a support frame 3 and refractory heat-insulating powder 5; the bottom frame body 1 is of a structure with closed periphery and bottom and an open upper end; the support frame 3 is of an isosceles trapezoid structure with a large upper part and a small lower part; a plurality of support frames 3 are uniformly arranged in the bottom frame body 1; a plurality of inserting grooves 11 are uniformly formed in the middle of the lower part of the inner part of the bottom frame body 1; a support frame 3 is respectively inserted in the insertion grooves 11 at the lower part in the bottom frame body 1; the upper ends of the bottom frame body 1 and the support frame 3 are provided with a connecting layer 4; the upper end of the connecting layer 4 is provided with a closed cover plate 2; heat-insulating refractory powder is filled in the bottom frame body; the bottom frame body and the closed cover plate comprise the following components in parts by weight: 10 parts of titanium boride, 10 parts of thorium sulfide, 5 parts of kaolin, 10 parts of bound clay and 30 parts of magnesium oxide; the connecting layer comprises the following components in parts by weight: 10 parts of clay, 5 parts of hexagonal boron nitride, 5 parts of nano alumina, 20 parts of silicon carbide and 20 parts of magnesium oxide are combined; the supporting frame is made of silicon carbide material; the fire-resistant heat-insulating powder is calcium silicate powder. Further, 3 to 10 support frames, preferably 4 support frames, are mounted inside the bottom frame.
A preparation method of a refractory brick with a stable structure comprises the following steps:
s1, preparing a bottom frame body: fully stirring titanium boride, thorium sulfide, kaolin, bonded clay and magnesium oxide with water according to a ratio to obtain a bottom frame paste material, feeding the bottom frame paste material into a forming machine, performing compression forming in a mold, and feeding the bottom frame paste material into a tunnel kiln for firing to form a bottom frame; the water-material ratio is 1: 5; the high-temperature firing temperature in the tunnel kiln is 1200 ℃, and the firing temperature is 40 min.
S2, preparing a closed cover plate: fully stirring titanium boride, thorium sulfide, kaolin, bonded clay and magnesium oxide with water according to a ratio to obtain a closed cover plate pasty material, feeding the closed cover plate pasty material into a forming machine, performing compression forming in a mold, and feeding the closed cover plate pasty material into a tunnel kiln for firing to form a closed cover plate; the water-material ratio is 1: 5; the high-temperature firing temperature in the tunnel kiln is 1200 ℃, and the firing temperature is 30 min.
S3, assembling: the supporting frames in an isosceles trapezoid structure with a large upper part and a small lower part are respectively inserted into the insertion grooves in the bottom frame body, the upper end surfaces of the supporting frames are flush with the upper end surface of the bottom frame body, and then the bottom frame body is filled with refractory heat-insulating powder; the refractory heat-insulating powder is calcium silicate powder.
S4, bonding and firing of the connecting layer: fully stirring the combined clay, hexagonal boron nitride, nano-alumina, silicon carbide and magnesium oxide with water according to a ratio to obtain a connecting layer paste material, painting the connecting layer paste material on the lower end face of the closed cover plate, packaging the connecting layer paste material on the lower end face of the closed cover plate on the bottom frame body and the upper end face of the support frame, and then sending the connecting layer paste material into a tunnel kiln for firing to enable the connecting layer to be solidified and connected; the water-material ratio of the connecting layer is 1: 8; the high-temperature firing temperature in the tunnel kiln is 600 ℃, and the firing temperature is 20 min.
Example 2
As shown in figure 1, the refractory brick with a stable structure comprises a bottom frame body 1, a connecting layer 4, a closed cover plate 2, a support frame 3 and refractory heat-insulating powder 5; the bottom frame body 1 is of a structure with closed periphery and bottom and an open upper end; the support frame 3 is of an isosceles trapezoid structure with a large upper part and a small lower part; a plurality of support frames 3 are uniformly arranged in the bottom frame body 1; a plurality of inserting grooves 11 are uniformly formed in the middle of the lower part of the inner part of the bottom frame body 1; a support frame 3 is respectively inserted in the insertion grooves 11 at the lower part in the bottom frame body 1; the upper ends of the bottom frame body 1 and the support frame 3 are provided with a connecting layer 4; the upper end of the connecting layer 4 is provided with a closed cover plate 2; heat-insulating refractory powder is filled in the bottom frame body; the bottom frame body and the closed cover plate comprise the following components in parts by weight: 15 parts of titanium boride, 13 parts of thorium sulfide, 8 parts of kaolin, 12 parts of bound clay and 35 parts of magnesium oxide; the connecting layer comprises the following components in parts by weight: 15 parts of clay, 8 parts of hexagonal boron nitride, 7 parts of nano alumina, 22 parts of silicon carbide and 22 parts of magnesium oxide are combined; the supporting frame is made of silicon carbide material; the fire-resistant heat-insulating powder is calcium silicate powder. Further, 3 to 10 support frames, preferably 4 support frames, are mounted inside the bottom frame.
A preparation method of a refractory brick with a stable structure comprises the following steps:
s1, preparing a bottom frame body: fully stirring titanium boride, thorium sulfide, kaolin, bonded clay and magnesium oxide with water according to a ratio to obtain a bottom frame paste material, feeding the bottom frame paste material into a forming machine, performing compression forming in a mold, and feeding the bottom frame paste material into a tunnel kiln for firing to form a bottom frame; the water-material ratio is 1: 8; the high-temperature firing temperature in the tunnel kiln is 1300 ℃ and the firing temperature is 45 min.
S2, preparing a closed cover plate: fully stirring titanium boride, thorium sulfide, kaolin, bonded clay and magnesium oxide with water according to a ratio to obtain a closed cover plate pasty material, feeding the closed cover plate pasty material into a forming machine, performing compression forming in a mold, and feeding the closed cover plate pasty material into a tunnel kiln for firing to form a closed cover plate; the water-material ratio is 1: 7; the high-temperature firing temperature in the tunnel kiln is 1300 ℃ and the firing temperature is 35 min.
S3, assembling: the supporting frames in an isosceles trapezoid structure with a large upper part and a small lower part are respectively inserted into the insertion grooves in the bottom frame body, the upper end surfaces of the supporting frames are flush with the upper end surface of the bottom frame body, and then the bottom frame body is filled with refractory heat-insulating powder; the refractory heat-insulating powder is calcium silicate powder.
S4, bonding and firing of the connecting layer: fully stirring the combined clay, hexagonal boron nitride, nano-alumina, silicon carbide and magnesium oxide with water according to a ratio to obtain a connecting layer paste material, painting the connecting layer paste material on the lower end face of the closed cover plate, packaging the connecting layer paste material on the lower end face of the closed cover plate on the bottom frame body and the upper end face of the support frame, and then sending the connecting layer paste material into a tunnel kiln for firing to enable the connecting layer to be solidified and connected; the water-material ratio of the connecting layer is 1: 10; the high-temperature firing temperature in the tunnel kiln is 700 ℃, and the firing temperature is 25 min.
Example 3
As shown in figure 1, the refractory brick with a stable structure comprises a bottom frame body 1, a connecting layer 4, a closed cover plate 2, a support frame 3 and refractory heat-insulating powder 5; the bottom frame body 1 is of a structure with closed periphery and bottom and an open upper end; the support frame 3 is of an isosceles trapezoid structure with a large upper part and a small lower part; a plurality of support frames 3 are uniformly arranged in the bottom frame body 1; a plurality of inserting grooves 11 are uniformly formed in the middle of the lower part of the inner part of the bottom frame body 1; a support frame 3 is respectively inserted in the insertion grooves 11 at the lower part in the bottom frame body 1; the upper ends of the bottom frame body 1 and the support frame 3 are provided with a connecting layer 4; the upper end of the connecting layer 4 is provided with a closed cover plate 2; heat-insulating refractory powder is filled in the bottom frame body; the bottom frame body and the closed cover plate comprise the following components in parts by weight: 20 parts of titanium boride, 15 parts of thorium sulfide, 10 parts of kaolin, 15 parts of bound clay and 40 parts of magnesium oxide; the connecting layer comprises the following components in parts by weight: 20 parts of clay, 10 parts of hexagonal boron nitride, 10 parts of nano alumina, 25 parts of silicon carbide and 25 parts of magnesium oxide are combined; the supporting frame is made of silicon carbide material; the fire-resistant heat-insulating powder is calcium silicate powder. Further, 3 to 10 support frames, preferably 4 support frames, are mounted inside the bottom frame.
A preparation method of a refractory brick with a stable structure comprises the following steps:
s1, preparing a bottom frame body: fully stirring titanium boride, thorium sulfide, kaolin, bonded clay and magnesium oxide with water according to a ratio to obtain a bottom frame paste material, feeding the bottom frame paste material into a forming machine, performing compression forming in a mold, and feeding the bottom frame paste material into a tunnel kiln for firing to form a bottom frame; the water-material ratio is 1: 10; the high-temperature firing temperature in the tunnel kiln is 1400 ℃, and the firing temperature is 50 min.
S2, preparing a closed cover plate: fully stirring titanium boride, thorium sulfide, kaolin, bonded clay and magnesium oxide with water according to a ratio to obtain a closed cover plate pasty material, feeding the closed cover plate pasty material into a forming machine, performing compression forming in a mold, and feeding the closed cover plate pasty material into a tunnel kiln for firing to form a closed cover plate; the water-material ratio is 1: 10; the high-temperature firing temperature in the tunnel kiln is 1400 ℃, and the firing temperature is 40 min.
S3, assembling: the supporting frames in an isosceles trapezoid structure with a large upper part and a small lower part are respectively inserted into the insertion grooves in the bottom frame body, the upper end surfaces of the supporting frames are flush with the upper end surface of the bottom frame body, and then the bottom frame body is filled with refractory heat-insulating powder; the refractory heat-insulating powder is calcium silicate powder.
S4, bonding and firing of the connecting layer: fully stirring the combined clay, hexagonal boron nitride, nano-alumina, silicon carbide and magnesium oxide with water according to a ratio to obtain a connecting layer paste material, painting the connecting layer paste material on the lower end face of the closed cover plate, packaging the connecting layer paste material on the lower end face of the closed cover plate on the bottom frame body and the upper end face of the support frame, and then sending the connecting layer paste material into a tunnel kiln for firing to enable the connecting layer to be solidified and connected; the water-material ratio of the connecting layer is 1: 12; the high-temperature firing temperature in the tunnel kiln is 800 ℃, and the firing temperature is 30 min.
The supporting frames which are in the isosceles trapezoid structures with the large upper parts and the small lower parts are respectively inserted into the insertion grooves in the bottom frame body, so that the strength of the whole structure is greatly improved through the structural characteristics of the isosceles trapezoids, and meanwhile, the assembling speed and efficiency are improved; the invention greatly shortens the whole firing time, and the area of the whole structure hard block structure is greatly reduced by using the filled refractory heat-insulating powder as a refractory heat-insulating medium.
In order to improve the adhesion between the closed cover plate and the bottom frame body as well as the upper end surface of the support frame, the invention selects the connecting layer which is prepared by combining clay, hexagonal boron nitride, nano-alumina, silicon carbide and magnesium oxide according to the component proportion of the closed cover plate and the component proportion of the bottom frame body and the support frame, the connecting layer selects the silicon carbide which is the same as the material of the support frame as the component, selects the magnesium oxide which is the same as the components of the bottom frame body and the closed cover plate as the component, thus improving the material cooperativity of the connecting layer, the supporting frame, the bottom frame body and the sealing cover plate, the bonding area and strength of the connection layer are improved by the hexagonal crystal of hexagonal boron nitride and high strength, through nanometer aluminium oxide and combination clay improvement articulamentum's porous adsorption characteristic and adhesion nature, so through the cooperation of each component very big reinforcing the joint strength of closing the apron with bottom framework and support frame up end.
The integral structure of the traditional refractory brick is changed, the structure for packaging the closed cover plate and the bottom frame body is adopted, the interior of the bottom frame body is filled with refractory heat-insulating powder as a refractory heat-insulating medium, in order to improve the strength of the whole structure, a plurality of support frames are arranged in the bottom frame body to serve as internal strength frameworks, the closed cover plate and the bottom frame body are fired, cured and connected through a connecting layer serving as a connecting medium, and the refractory heat-insulating powder is filled in the whole structure, so that the difficulty in recycling and crushing of the whole structure is greatly reduced, and the recycling is convenient.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A refractory brick with a stable structure is characterized by comprising a bottom frame body, a connecting layer, a closed cover plate, a support frame and refractory heat-insulating powder; the bottom frame body is of a structure with the periphery, the bottom and the upper end being closed; the supporting frame is of an isosceles trapezoid structure with a large upper part and a small lower part; a plurality of support frames are uniformly arranged in the bottom frame body; a plurality of inserting grooves are uniformly formed in the middle of the lower part of the inner part of the bottom frame body; a support frame is respectively inserted in the insertion grooves at the lower part in the bottom frame body; the bottom frame body and the upper end of the support frame are provided with connecting layers; a closed cover plate is arranged at the upper end of the connecting layer; heat-insulating refractory powder is filled in the bottom frame body; the bottom frame body and the closed cover plate comprise the following components in parts by weight: 10-20 parts of titanium boride, 10-15 parts of thorium sulfide, 5-10 parts of kaolin, 10-15 parts of bound clay and 30-40 parts of magnesium oxide; the connecting layer comprises the following components in parts by weight: clay 10-20 parts, hexagonal boron nitride 5-10 parts, nano alumina 5-10 parts, silicon carbide 20-25 parts, and magnesium oxide 20-25 parts are combined; the supporting frame is made of silicon carbide material; the fire-resistant heat-insulating powder is calcium silicate powder.
2. The structurally sound refractory brick of claim 1, wherein 3 to 10 support brackets are mounted inside the bottom frame.
3. The structurally sound refractory brick of claim 1, wherein the bottom frame and the closing cover comprise the following components in parts by weight: 15 parts of titanium boride, 13 parts of thorium sulfide, 8 parts of kaolin, 12 parts of bound clay and 35 parts of magnesium oxide.
4. The structurally sound refractory brick of claim 1, wherein the joint layer comprises the following components in parts by weight: 15 parts of clay, 8 parts of hexagonal boron nitride, 7 parts of nano alumina, 22 parts of silicon carbide and 22 parts of magnesium oxide.
5. A method of making a structurally stabilized refractory brick according to claim 1, characterized by the steps of:
s1, preparing a bottom frame body: fully stirring titanium boride, thorium sulfide, kaolin, bonded clay and magnesium oxide with water according to a ratio to obtain a bottom frame paste material, feeding the bottom frame paste material into a forming machine, performing compression forming in a mold, and feeding the bottom frame paste material into a tunnel kiln for firing to form a bottom frame;
s2, preparing a closed cover plate: fully stirring titanium boride, thorium sulfide, kaolin, bonded clay and magnesium oxide with water according to a ratio to obtain a closed cover plate pasty material, feeding the closed cover plate pasty material into a forming machine, performing compression forming in a mold, and feeding the closed cover plate pasty material into a tunnel kiln for firing to form a closed cover plate;
s3, assembling: the supporting frames in an isosceles trapezoid structure with a large upper part and a small lower part are respectively inserted into the insertion grooves in the bottom frame body, the upper end surfaces of the supporting frames are flush with the upper end surface of the bottom frame body, and then the bottom frame body is filled with refractory heat-insulating powder;
s4, bonding and firing of the connecting layer: fully stirring the combined clay, hexagonal boron nitride, nano aluminum oxide, silicon carbide and magnesium oxide with water according to a ratio to obtain a connecting layer paste, painting the connecting layer paste on the lower end face of the closed cover plate, packaging the connecting layer paste on the lower end face of the closed cover plate on the upper end faces of the bottom frame body and the support frame, and then sending the connecting layer paste into a tunnel kiln for firing so that the connecting layer is solidified and connected.
6. The method for preparing the structurally stabilized refractory brick as claimed in claim 5, wherein the water-to-material ratio in the step S1 is 1: 5-10; the high-temperature firing temperature in the tunnel kiln is 1200-1400 ℃, and the firing temperature is 40-50 min.
7. The method for preparing the structurally stabilized refractory brick as claimed in claim 5, wherein the water-to-material ratio in the step S2 is 1: 5-10; the high-temperature firing temperature in the tunnel kiln is 1200-1400 ℃, and the firing temperature is 30-40 min.
8. The method of claim 5, wherein the refractory heat-insulating powder in step S3 is calcium silicate powder.
9. The method for preparing the structurally stabilized refractory brick as claimed in claim 5, wherein the water-to-material ratio of the joint layer configuration in the step S4 is 1: 8-12; the high-temperature firing temperature in the tunnel kiln is 600-800 ℃, and the firing temperature is 20-30 min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113063295A (en) * | 2021-03-15 | 2021-07-02 | 东台市港泰耐火材料有限公司 | Pouring filling type fireproof heat-insulating brick and preparation process thereof |
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