CN107663095B - Clay heat-insulating refractory brick NG130-1.0 and preparation method thereof - Google Patents
Clay heat-insulating refractory brick NG130-1.0 and preparation method thereof Download PDFInfo
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- CN107663095B CN107663095B CN201610606608.8A CN201610606608A CN107663095B CN 107663095 B CN107663095 B CN 107663095B CN 201610606608 A CN201610606608 A CN 201610606608A CN 107663095 B CN107663095 B CN 107663095B
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- 239000011449 brick Substances 0.000 title claims abstract description 68
- 239000004927 clay Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 50
- 239000002994 raw material Substances 0.000 claims abstract description 39
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000011812 mixed powder Substances 0.000 claims abstract description 30
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 20
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 20
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 20
- 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 abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 15
- 239000010451 perlite Substances 0.000 claims abstract description 10
- 235000019362 perlite Nutrition 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 20
- 238000003860 storage Methods 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 11
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000292 calcium oxide Substances 0.000 claims description 10
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 10
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 10
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 10
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- 235000012239 silicon dioxide Nutrition 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 238000010304 firing Methods 0.000 abstract description 7
- 238000004321 preservation Methods 0.000 abstract description 6
- 239000011819 refractory material Substances 0.000 abstract description 2
- 239000004480 active ingredient Substances 0.000 description 9
- 238000009413 insulation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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Abstract
A clay heat-insulating refractory brick NG130-1.0 and a preparation method thereof relate to the technical field of refractory material manufacture, and the clay heat-insulating refractory brick comprises the following raw materials in parts by weight: 20-30 parts of closed-cell perlite, 10-20 parts of high-aluminum ultrafine powder, 10-15 parts of kaolin, 10-15 parts of bauxite, 10-15 parts of alumina powder, 10-15 parts of mixed powder and 12-14 parts of water. The raw materials of the invention adopt high-refractoriness raw materials, and the raw materials are prepared into the clay heat-insulating refractory brick NG130-1.0 by batching, mixing, blank making, firing and the like according to a certain proportion, the refractory brick has low production cost, high normal temperature compressive strength, small heat conductivity coefficient, and the permanent line change values of the volume density, the heating temperature and the heat preservation time are within the range values specified in GB/T3994-2013.
Description
Technical Field
The invention relates to the technical field of refractory material manufacturing, in particular to a clay heat-insulating refractory brick NG130-1.0 and a preparation method thereof.
Background
The production process of the clay heat-insulating refractory brick is a semi-dry forming method which is commonly adopted in China, and due to the difference of raw materials and materials used by various manufacturers and the difference of high-temperature firing temperature and heat preservation time, the rate of change indexes of heating permanent lines of 96 percent of the products of the manufacturers are not qualified (the indexes of GB/T3994-2013 cannot be met). The main reason for this is that the firing temperature does not reach the heating permanent line change temperature of the insulating brick or the holding time at the temperature is insufficient, the product is kept at the specified temperature for 12 hours during detection, and if the detected temperature and holding time are higher than the firing temperature and holding time of the product, the heating permanent line change of the insulating brick is increased, especially the shrinkage rate is increased, so that the requirement of national standard technical indexes is not met.
Therefore, in order to ensure that the heating permanent line change rate of the heat insulation brick is qualified, the firing temperature of the heat insulation brick and the heat preservation time at the temperature need to be increased, so that the heat insulation brick can not shrink or has small shrinkage value and does not deform under the specified high-temperature firing temperature and heat preservation conditions, and finally the index requirement of the national standard heating permanent line change rate is met.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides the clay heat-insulating refractory brick NG130-1.0 and the preparation method thereof, the volume density, the heating temperature and the permanent line change value of the heat preservation time of the finished brick produced by the preparation method can be within the range values specified in GB/T3994-2013, and the normal-temperature compressive strength and the heat conductivity coefficient index of the finished brick can reach the national standard.
The invention is realized by the following steps: a clay heat-insulating refractory brick NG130-1.0 is composed of the following raw materials in parts by weight: 20-30 parts of closed-cell perlite, 10-20 parts of high-aluminum ultrafine powder, 10-15 parts of kaolin, 10-15 parts of bauxite, 10-15 parts of alumina powder, 10-15 parts of mixed powder and 12-14 parts of water.
The active ingredients in the mixed powder are 55% of alumina, 8% of silicon dioxide, 1.4% of ferric oxide, 26% of calcium oxide and the balance of impurities.
The granularity of the closed-cell pearl powder is less than 1.2mm, the granularity of the high-aluminum ultrafine powder is 600 meshes, the granularity of the kaolin is 180 meshes, the granularity of the bauxite is 180 meshes, the granularity of the alumina powder is 600 meshes, and the granularity of the mixed powder is 260 meshes.
The preparation method of the clay heat-insulating refractory brick NG130-1.0 comprises the following steps: (1) mixing the raw materials in proportion, conveying the mixture to a mixing stirrer, and entering a storage bin after mixing; (2) the mixed raw materials in the storage bin enter a brick press for molding, and the pressure of the brick press is 80 tons; (3) transferring the pressed and molded brick into a tunnel kiln to be fired for 5-6h, wherein the temperature at the kiln opening is 60 ℃, and the temperature in the kiln is 1000-1200 ℃; (4) and sorting, boxing and warehousing finished products.
Compared with the prior art, the invention has the beneficial effects that:
the raw materials of the invention adopt high-refractoriness raw materials, and the raw materials are prepared into the clay heat-insulating refractory brick NG130-1.0 by batching, mixing, blank making, firing and the like according to a certain proportion, the refractory brick has low production cost, high normal temperature compressive strength, small heat conductivity coefficient, and the permanent line change values of the volume density, the heating temperature and the heat preservation time are within the range values specified in GB/T3994-2013.
Detailed Description
Example 1
A clay heat-insulating refractory brick NG130-1.0 is composed of the following raw materials in parts by weight: 20-30 parts of closed-cell perlite, 10-20 parts of high-aluminum ultrafine powder, 10-15 parts of kaolin, 10-15 parts of bauxite, 10-15 parts of alumina powder, 10-15 parts of mixed powder and 12-14 parts of water.
The active ingredients in the mixed powder are 55% of alumina, 8% of silicon dioxide, 1.4% of ferric oxide, 26% of calcium oxide and the balance of impurities.
The granularity of the closed-cell pearl powder is less than 1.2mm, the granularity of the high-aluminum ultrafine powder is 600 meshes, the granularity of the kaolin is 180 meshes, the granularity of the bauxite is 180 meshes, the granularity of the alumina powder is 600 meshes, and the granularity of the mixed powder is 260 meshes.
The preparation method of the clay heat-insulating refractory brick NG130-1.0 comprises the following steps: (1) mixing the raw materials in proportion, conveying the mixture to a mixing stirrer, and entering a storage bin after mixing; (2) the mixed raw materials in the storage bin enter a brick press for molding, and the pressure of the brick press is 80 tons; (3) transferring the pressed and molded brick into a tunnel kiln to be fired for 5-6h, wherein the temperature at the kiln opening is 60 ℃, and the temperature in the kiln is 1000-1200 ℃; (4) and sorting, boxing and warehousing finished products.
Example 2
A clay heat-insulating refractory brick NG130-1.0 is composed of the following raw materials in parts by weight: 23-28 parts of closed-cell perlite, 12-18 parts of high-aluminum ultrafine powder, 11-14 parts of kaolin, 11-14 parts of bauxite, 11-14 parts of alumina powder, 11-14 parts of mixed powder and 12-13 parts of water.
The active ingredients in the mixed powder are 55% of alumina, 8% of silicon dioxide, 1.4% of ferric oxide, 26% of calcium oxide and the balance of impurities.
The granularity of the closed-cell pearl powder is less than 1.2mm, the granularity of the high-aluminum ultrafine powder is 600 meshes, the granularity of the kaolin is 180 meshes, the granularity of the bauxite is 180 meshes, the granularity of the alumina powder is 600 meshes, and the granularity of the mixed powder is 260 meshes.
The preparation method of the clay heat-insulating refractory brick NG130-1.0 comprises the following steps: (1) mixing the raw materials in proportion, conveying the mixture to a mixing stirrer, and entering a storage bin after mixing; (2) the mixed raw materials in the storage bin enter a brick press for molding, and the pressure of the brick press is 80 tons; (3) transferring the pressed and molded brick into a tunnel kiln to be fired for 5-6h, wherein the temperature at the kiln opening is 60 ℃, and the temperature in the kiln is 1050-1150 ℃; (4) and sorting, boxing and warehousing finished products.
Example 3
A clay heat-insulating refractory brick NG130-1.0 is composed of the following raw materials in parts by weight: 25 parts of closed-cell perlite, 15 parts of high-alumina ultrafine powder, 13 parts of kaolin, 13 parts of bauxite, 13 parts of alumina powder, 13 parts of mixed powder and 13 parts of water.
The active ingredients in the mixed powder are 55% of alumina, 8% of silicon dioxide, 1.4% of ferric oxide, 26% of calcium oxide and the balance of impurities.
The granularity of the closed-cell pearl powder is less than 1.2mm, the granularity of the high-aluminum ultrafine powder is 600 meshes, the granularity of the kaolin is 180 meshes, the granularity of the bauxite is 180 meshes, the granularity of the alumina powder is 600 meshes, and the granularity of the mixed powder is 260 meshes.
The preparation method of the clay heat-insulating refractory brick NG130-1.0 comprises the following steps: (1) mixing the raw materials in proportion, conveying the mixture to a mixing stirrer, and entering a storage bin after mixing; (2) the mixed raw materials in the storage bin enter a brick press for molding, and the pressure of the brick press is 80 tons; (3) transferring the pressed and molded brick into a tunnel kiln to be fired for 5.5 hours, wherein the temperature at the kiln opening is 60 ℃, and the temperature in the kiln is 1100 ℃; (4) and sorting, boxing and warehousing finished products.
Example 4
A clay heat-insulating refractory brick NG130-1.0 is composed of the following raw materials in parts by weight: 20 parts of closed-cell perlite, 10 parts of high-alumina ultrafine powder, 10 parts of kaolin, 10 parts of bauxite, 10 parts of alumina powder, 10 parts of mixed powder and 12 parts of water.
The active ingredients in the mixed powder are 55% of alumina, 8% of silicon dioxide, 1.4% of ferric oxide, 26% of calcium oxide and the balance of impurities.
The granularity of the closed-cell pearl powder is less than 1.2mm, the granularity of the high-aluminum ultrafine powder is 600 meshes, the granularity of the kaolin is 180 meshes, the granularity of the bauxite is 180 meshes, the granularity of the alumina powder is 600 meshes, and the granularity of the mixed powder is 260 meshes.
The preparation method of the clay heat-insulating refractory brick NG130-1.0 comprises the following steps: (1) mixing the raw materials in proportion, conveying the mixture to a mixing stirrer, and entering a storage bin after mixing; (2) the mixed raw materials in the storage bin enter a brick press for molding, and the pressure of the brick press is 80 tons; (3) transferring the pressed and molded brick into a tunnel kiln to be fired for 5 hours, wherein the temperature at the kiln opening is 60 ℃, and the temperature in the kiln is 1000 ℃; (4) and sorting, boxing and warehousing finished products.
Example 5
A clay heat-insulating refractory brick NG130-1.0 is composed of the following raw materials in parts by weight: 30 parts of closed-cell perlite, 20 parts of high-alumina ultrafine powder, 15 parts of kaolin, 15 parts of bauxite, 15 parts of alumina powder, 15 parts of mixed powder and 14 parts of water.
The active ingredients in the mixed powder are 55% of alumina, 8% of silicon dioxide, 1.4% of ferric oxide, 26% of calcium oxide and the balance of impurities.
The granularity of the closed-cell pearl powder is less than 1.2mm, the granularity of the high-aluminum ultrafine powder is 600 meshes, the granularity of the kaolin is 180 meshes, the granularity of the bauxite is 180 meshes, the granularity of the alumina powder is 600 meshes, and the granularity of the mixed powder is 260 meshes.
The preparation method of the clay heat-insulating refractory brick NG130-1.0 comprises the following steps: (1) mixing the raw materials in proportion, conveying the mixture to a mixing stirrer, and entering a storage bin after mixing; (2) the mixed raw materials in the storage bin enter a brick press for molding, and the pressure of the brick press is 80 tons; (3) transferring the pressed and molded brick into a tunnel kiln to be fired for 6 hours, wherein the temperature at the kiln opening is 60 ℃, and the temperature in the kiln is 1200 ℃; (4) and sorting, boxing and warehousing finished products.
Example 6
A clay heat-insulating refractory brick NG130-1.0 is composed of the following raw materials in parts by weight: 23 parts of closed-cell perlite, 12 parts of high-alumina ultrafine powder, 11 parts of kaolin, 11 parts of bauxite, 11 parts of alumina powder, 11 parts of mixed powder and 12 parts of water.
The active ingredients in the mixed powder are 55% of alumina, 8% of silicon dioxide, 1.4% of ferric oxide, 26% of calcium oxide and the balance of impurities.
The granularity of the closed-cell pearl powder is less than 1.2mm, the granularity of the high-aluminum ultrafine powder is 600 meshes, the granularity of the kaolin is 180 meshes, the granularity of the bauxite is 180 meshes, the granularity of the alumina powder is 600 meshes, and the granularity of the mixed powder is 260 meshes.
The preparation method of the clay heat-insulating refractory brick NG130-1.0 comprises the following steps: (1) mixing the raw materials in proportion, conveying the mixture to a mixing stirrer, and entering a storage bin after mixing; (2) the mixed raw materials in the storage bin enter a brick press for molding, and the pressure of the brick press is 80 tons; (3) transferring the pressed and molded brick into a tunnel kiln to be fired for 5 hours, wherein the temperature at the kiln opening is 60 ℃, and the temperature in the kiln is 1050 ℃; (4) and sorting, boxing and warehousing finished products.
Example 7
A clay heat-insulating refractory brick NG130-1.0 is composed of the following raw materials in parts by weight: 28 parts of closed-cell perlite, 18 parts of high-alumina ultrafine powder, 14 parts of kaolin, 14 parts of bauxite, 14 parts of alumina powder, 14 parts of mixed powder and 13 parts of water.
The active ingredients in the mixed powder are 55% of alumina, 8% of silicon dioxide, 1.4% of ferric oxide, 26% of calcium oxide and the balance of impurities.
The granularity of the closed-cell pearl powder is less than 1.2mm, the granularity of the high-aluminum ultrafine powder is 600 meshes, the granularity of the kaolin is 180 meshes, the granularity of the bauxite is 180 meshes, the granularity of the alumina powder is 600 meshes, and the granularity of the mixed powder is 260 meshes.
The preparation method of the clay heat-insulating refractory brick NG130-1.0 comprises the following steps: (1) mixing the raw materials in proportion, conveying the mixture to a mixing stirrer, and entering a storage bin after mixing; (2) the mixed raw materials in the storage bin enter a brick press for molding, and the pressure of the brick press is 80 tons; (3) transferring the pressed and molded brick into a tunnel kiln to be fired for 6 hours, wherein the kiln mouth temperature is 60 ℃, and the kiln internal temperature is 1150 ℃; (4) and sorting, boxing and warehousing finished products.
Other embodiments
A clay heat-insulating refractory brick NG130-1.0 is composed of the following raw materials in parts by weight as shown in Table 1:
TABLE 1
The active ingredients in the mixed powder are 55% of alumina, 8% of silicon dioxide, 1.4% of ferric oxide, 26% of calcium oxide and the balance of impurities.
The granularity of the closed-cell pearl powder is less than 1.2mm, the granularity of the high-aluminum ultrafine powder is 600 meshes, the granularity of the kaolin is 180 meshes, the granularity of the bauxite is 180 meshes, the granularity of the alumina powder is 600 meshes, and the granularity of the mixed powder is 260 meshes.
The preparation method of the clay heat-insulating refractory brick NG130-1.0 comprises the following steps:
TABLE 2
The following steps are carried out according to the examples of variables in table 2 in any combination:
(1) mixing the raw materials in proportion, conveying the mixture to a mixing stirrer, and entering a storage bin after mixing; (2) the mixed raw materials in the storage bin enter a brick press for molding, and the pressure of the brick press is 80 tons; (3) transferring the pressed and molded brick into a tunnel kiln to be fired for 5-6h, wherein the temperature at the kiln opening is 60 ℃, and the temperature in the kiln is 1000-1200 ℃; (4) and sorting, boxing and warehousing finished products.
Examples of the experiments
The physicochemical indexes of the raw materials are shown in table 3:
TABLE 3
The performance indicators of examples 3, 4, 5, 6, and 7 were determined as shown in Table 4:
table 4.
Claims (2)
1. A clay heat-insulating refractory brick NG130-1.0 is characterized in that: the composition is characterized by comprising the following raw materials in parts by weight: 20-30 parts of closed-cell perlite, 10-20 parts of high-aluminum ultrafine powder, 10-15 parts of kaolin, 10-15 parts of bauxite, 10-15 parts of alumina powder, 10-15 parts of mixed powder and 12-14 parts of water;
wherein, the effective components in the mixed powder are 55 percent of alumina, 8 percent of silicon dioxide, 1.4 percent of ferric oxide, 26 percent of calcium oxide and the balance of impurities;
the granularity of the closed-cell pearl powder is less than 1.2mm, the granularity of the high-aluminum ultrafine powder is 600 meshes, the granularity of the kaolin is 180 meshes, the granularity of the bauxite is 180 meshes, the granularity of the alumina powder is 600 meshes, and the granularity of the mixed powder is 260 meshes.
2. A method of making the clay-based insulating refractory brick NG130-1.0 as claimed in claim 1, wherein: the method comprises the following steps: (1) mixing the raw materials in proportion, conveying the mixture to a mixing stirrer, and entering a storage bin after mixing; (2) the mixed raw materials in the storage bin enter a brick press for molding, and the pressure of the brick press is 80 tons; (3) transferring the pressed and molded brick into a tunnel kiln to be fired for 5-6h, wherein the temperature at the kiln opening is 60 ℃, and the temperature in the kiln is 1000-1200 ℃; (4) and sorting, boxing and warehousing finished products.
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| JP3080941B1 (en) * | 1999-03-30 | 2000-08-28 | 日本プライブリコ株式会社 | Insulated sprayed plastic refractories |
| CN101585715B (en) * | 2009-06-24 | 2011-11-16 | 樊金鑫 | Microporous refractory heat-insulating material and manufacturing method thereof |
| CN101618968B (en) * | 2009-08-11 | 2012-05-30 | 郑州东方炉衬材料有限公司 | Ultra-microporous lightweight insulated firebrick and manufacture method thereof |
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