CN108516810B - High-thermal-conductivity ceramic tile and manufacturing method thereof - Google Patents
High-thermal-conductivity ceramic tile and manufacturing method thereof Download PDFInfo
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- CN108516810B CN108516810B CN201810338759.9A CN201810338759A CN108516810B CN 108516810 B CN108516810 B CN 108516810B CN 201810338759 A CN201810338759 A CN 201810338759A CN 108516810 B CN108516810 B CN 108516810B
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- 239000000919 ceramic Substances 0.000 title claims abstract description 112
- 238000004519 manufacturing process Methods 0.000 title description 14
- 238000010304 firing Methods 0.000 claims abstract description 40
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000002994 raw material Substances 0.000 claims abstract description 25
- 239000000126 substance Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000003825 pressing Methods 0.000 claims abstract description 19
- 238000002360 preparation method Methods 0.000 claims abstract description 14
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 11
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 10
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000292 calcium oxide Substances 0.000 claims abstract description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910001947 lithium oxide Inorganic materials 0.000 claims abstract description 6
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 6
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 6
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910001950 potassium oxide Inorganic materials 0.000 claims abstract description 6
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910001948 sodium oxide Inorganic materials 0.000 claims abstract description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 6
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000004576 sand Substances 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 21
- 239000000843 powder Substances 0.000 claims description 16
- 239000004575 stone Substances 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 claims description 10
- 229910001570 bauxite Inorganic materials 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 10
- 229910052642 spodumene Inorganic materials 0.000 claims description 10
- 238000004321 preservation Methods 0.000 claims description 9
- 240000002853 Nelumbo nucifera Species 0.000 claims description 8
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 8
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims description 8
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 8
- 239000009853 xinfeng Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 4
- -1 Iron oxide Titanium oxide Calcium oxide Chemical compound 0.000 description 9
- 238000005485 electric heating Methods 0.000 description 9
- 238000005245 sintering Methods 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 239000004927 clay Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 235000013312 flour Nutrition 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000002699 waste 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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
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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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
- C04B35/185—Mullite 3Al2O3-2SiO2
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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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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3201—Alkali metal oxides or oxide-forming salts thereof
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
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- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
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- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
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Abstract
The invention discloses a high-thermal-conductivity ceramic tile which comprises the following chemical components: 61-63% of silicon oxide, 29-31% of aluminum oxide, 1-1.5% of ferric oxide, 0.85-0.9% of titanium oxide, 0.27-0.31% of calcium oxide, 1.1-1.15% of magnesium oxide, 2.1-2.35% of potassium oxide, 1.75-2% of sodium oxide and 0.4-0.6% of lithium oxide; the high-thermal-conductivity ceramic tile has a thermal conductivity of 2.5-3.5W/m.K. Correspondingly, the invention also discloses a preparation method of the high-thermal-conductivity ceramic tile, which comprises the following steps: uniformly mixing the blank raw materials of the high-thermal-conductivity ceramic tile in proportion, and pressing into a blank; firing the green body in a roller kiln; and obtaining a finished product. The high-thermal-conductivity ceramic tile has the advantages of high thermal performance, easily-controlled firing process and low firing cost.
Description
Technical Field
The invention relates to the technical field of building decoration materials, in particular to a high-heat-conductivity ceramic tile and a manufacturing method thereof.
Background
The electric heating ceramic tile is widely applied to spaces such as household heating rooms and heat preservation rooms, and generally, an electric heating wire, carbon fibers or an electric heating film is mostly adopted as a heating element, a ceramic plate is used as an upper layer decorative plate, and an organic polyurethane plate or foamed ceramic is used as a bottom heat preservation and insulation material.
The upper-layer ceramic tile decorative plate of the existing electric heating ceramic tile generally adopts a common ceramic tile with the thickness of 10-15 mm, and the heat conductivity coefficient of the common ceramic tile is 1.5-1.7W/m.K. When the heat conductivity coefficient of the upper decorative plate of the electric heating ceramic tile is low, the heat generated by the heating wire in the electric heating ceramic tile is difficult to penetrate through the upper decorative plate to be emitted, and the energy waste is caused.
Disclosure of Invention
The invention aims to provide a high-heat-conductivity ceramic tile which has the characteristic of high heat conductivity;
the invention also aims to provide a preparation method of the high-thermal-conductivity ceramic tile, which has the characteristic of high thermal conductivity of a finished product.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high heat conduction ceramic tile comprises the following chemical components: 61-63% of silicon oxide, 29-31% of aluminum oxide, 1-1.5% of ferric oxide, 0.85-0.9% of titanium oxide, 0.27-0.31% of calcium oxide, 1.1-1.15% of magnesium oxide, 2.1-2.35% of potassium oxide, 1.75-2% of sodium oxide, 0.4-0.6% of lithium oxide and the balance of impurities;
the high-thermal-conductivity ceramic tile has a thermal conductivity of 2.5-3.5W/m.K.
Further, the blank raw materials of the high-thermal-conductivity ceramic tile comprise the following components in percentage by weight: 2-4% of warm sand in Taishan mountain, 2-4% of warm sand in lotus pond, 8-12% of Xinfeng sand, 7-9% of Zhongshan mountain stone powder, 18-22% of North sea stone powder, 7-9% of mud of Sihui, 13-17% of mud of Xinhui, 2-4% of talcum powder, 19-23% of bauxite and 8-10% of spodumene.
Further, the high-thermal-conductivity ceramic tile comprises the following chemical components: 61.99% of silicon oxide, 29.9% of aluminum oxide, 1.25% of iron oxide, 0.87% of titanium oxide, 0.29% of calcium oxide, 1.06% of magnesium oxide, 2.27% of potassium oxide, 1.86% of sodium oxide, 0.5% of lithium oxide and the balance of impurities. The high-thermal-conductivity ceramic tile with the chemical components has high thermal conductivity, high strength and low water absorption.
Further, the blank body raw materials of the high-thermal-conductivity ceramic tile comprise the following components in percentage by weight: 3% of Taishan medium temperature sand, 3% of lotus pond medium temperature sand, 10% of Xinfeng sand, 8% of Zhongshan mountain powder, 20% of North sea stone powder, 8% of Sihui mud, 15% of Xinhui mud, 3% of talcum powder, 21% of bauxite and 9% of spodumene. The green body adopting the formula has lower firing temperature, and the fired high-heat-conductivity ceramic tile has better performance.
Furthermore, the strength of a finished product of the high-thermal-conductivity ceramic tile after being fired is 47-52 MPa.
Furthermore, the water absorption of the finished product after the high-thermal-conductivity ceramic tile is fired is 0.01 percent.
The preparation method of the high-thermal-conductivity ceramic tile comprises the following steps:
uniformly mixing blank raw materials of the high-thermal-conductivity ceramic tile according to a proportion, and pressing the mixture into a blank, wherein the technological parameters of the blank pressing forming are as follows: 250-500 MPa, 4-6 times/min;
firing the green body in a roller kiln, wherein the temperature and time of each stage in the firing process are as follows: carrying out heat preservation for 8-12 min at 100-500 ℃, 23-27 min at 500-1185 ℃ and 8-12 min at 1185 ℃, and then cooling for 13-17 min until the material is taken out of the kiln;
and obtaining a finished product.
Further, firing the green body in a roller kiln, wherein the temperature and time of each stage in the firing process are as follows in sequence: 10min at 100-500 ℃, 25min at 500-1185 ℃, 10min at 1185 ℃, and cooling for 15min after the temperature is removed from the kiln.
Furthermore, the strength of a finished product of the high-thermal-conductivity ceramic tile after being fired is 47-52 MPa.
Furthermore, the water absorption of the finished product after the high-thermal-conductivity ceramic tile is fired is 0.01 percent.
The invention has the beneficial effects that:
1. the high-thermal-conductivity ceramic tile has high content of metal oxides, so that the ceramic tile has high thermal conductivity, and when the high-thermal-conductivity ceramic tile is applied to an electric heating ceramic tile, the heat conduction speed can be increased, and energy can be saved;
2. the bauxite is added in the formula to adjust the aluminum content in the green body, spodumene is added as a strong fluxing agent, crystal phase transformation can be carried out at a lower temperature in the firing process to generate a mullite crystal phase, and the high-thermal-conductivity ceramic tile after firing has less glass phase, compact structure and higher thermal conductivity coefficient;
3. the sand, stone powder and mud of a plurality of production places are adopted, so that the stability of the product can be improved, the cost is reduced, and the firing temperature is reduced;
4. the firing temperature of the green body in the preparation method is 1185 ℃, the firing time is about 1 hour, the firing temperature is lower, the firing time is shorter, the production cost is reduced, and the production process is easy to control.
Detailed Description
The technical solution of the present invention will be further described with reference to the following embodiments.
A high heat conduction ceramic tile comprises the following chemical components: 61-63% of silicon oxide, 29-31% of aluminum oxide, 1-1.5% of ferric oxide, 0.85-0.9% of titanium oxide, 0.27-0.31% of calcium oxide, 1.1-1.15% of magnesium oxide, 2.1-2.35% of potassium oxide, 1.75-2% of sodium oxide, 0.4-0.6% of lithium oxide and the balance of impurities. The high-thermal-conductivity ceramic tile has a thermal conductivity of 2.5-3.5W/m.K. The thickness of the high-heat-conductivity ceramic tile is 6-7 mm. The strength of a finished product of the high-thermal-conductivity ceramic tile after being fired is 47-52 MPa. The water absorption of the finished product after the high-thermal-conductivity ceramic tile is fired is 0.01 percent.
The high-heat-conductivity ceramic tile has high metal oxide content, so that the ceramic tile has high heat conductivity coefficient, and when the high-heat-conductivity ceramic tile is applied to an electric heating ceramic tile, the heat conduction speed can be increased, and the energy can be saved.
Preferably, the blank raw material of the high-thermal-conductivity ceramic tile comprises the following components in percentage by weight: 2-4% of warm sand in Taishan mountain, 2-4% of warm sand in lotus pond, 8-12% of Xinfeng sand, 7-9% of Zhongshan mountain stone powder, 18-22% of North sea stone powder, 7-9% of mud of Sihui, 13-17% of mud of Xinhui, 2-4% of talcum powder, 19-23% of bauxite and 8-10% of spodumene.
The chemical composition percentage of each body raw material of the high-thermal-conductivity ceramic tile is shown in table 1 through detection, wherein L.O.I refers to the loss on ignition.
The aluminum content in the green body is adjusted by adding bauxite in the formula, and when the aluminum content in the ceramic tile is increased, the ceramic tile has higher heat-conducting property.
By adding spodumene as a strong fluxing agent, crystal phase transformation can be generated at a lower temperature in the firing process to generate a mullite crystal phase, and the high-thermal-conductivity ceramic tile after firing has less glass phase, compact structure and higher thermal conductivity coefficient.
In the blank formula of the high-thermal-conductivity ceramic tile, the stone powder is in a raw ore form and is not subjected to pre-calcination and other processes, the stone powder in a plurality of production places can mutually compensate component fluctuation, the production is stable, the fluctuation of firing temperature can be improved, and the raw material cost and the process cost can be reduced. In the blank formula of the high-thermal-conductivity ceramic tile, sand and clay of a plurality of production places are adopted, so that the component fluctuation can be mutually compensated, the production is stable, the fluctuation of the firing temperature can be improved, and the raw material cost and the process cost can be reduced. Wherein the IV mud and the Xinhui mud are clay.
The preparation method of the high-thermal-conductivity ceramic tile comprises the following steps:
uniformly mixing blank raw materials of the high-thermal-conductivity ceramic tile according to a proportion, and pressing the mixture into a blank, wherein the technological parameters of the blank pressing forming are as follows: 250-500 MPa, 4-6 times/min;
firing the green body in a roller kiln, wherein the temperature and time of each stage in the firing process are as follows: carrying out heat preservation for 8-12 min at 100-500 ℃, 23-27 min at 500-1185 ℃ and 8-12 min at 1185 ℃, and then cooling for 13-17 min until the material is taken out of the kiln; and obtaining a finished product.
In the preparation method, the firing temperature of the green body is 1185 ℃, the firing time is about 1 hour, the firing temperature is lower, the firing time is shorter, the production cost is reduced, and the production process is easy to control.
It should be noted that, in practical production application, a step of arranging a decorative layer can be added as required, so as to improve the decorative effect of the electric heating ceramic tile. The decorative layer arranging step can be glazing and/or printing.
Example 1
The formula of the blank of the high-thermal-conductivity ceramic tile in the embodiment is as follows:
| raw materials | Middle-temperature sand for Taishan mountain | Medium-temperature sand for lotus pond | Xinfeng sand | Zhongshan mountain flour | North sea stone powder |
| Weight percent of | 2 | 2 | 12 | 7 | 22 |
| Raw materials | Mud for four parties | Xinhui mud | Talcum powder | Bauxite | Spodumene |
| Weight percent of | 9 | 13 | 4 | 19 | 10 |
The high thermal conductivity ceramic tile in the embodiment comprises the following chemical components:
| chemical composition | Silicon oxide | Alumina oxide | Iron oxide | Titanium oxide | Calcium oxide |
| Percentage of | 62.44 | 28.61 | 1.2 | 0.84 | 0.3 |
| Chemical composition | Magnesium oxide | Potassium oxide | Sodium oxide | Lithium oxide | Impurities |
| Percentage of | 1.29 | 2.24 | 1.85 | 0.6 | Balance of |
The high-thermal-conductivity ceramic tile has a thermal conductivity coefficient of 3.5W/m.K, and the thickness of 6-7 mm. The strength of a finished product of the high-thermal-conductivity ceramic tile after being fired is 47-52 MPa. The water absorption of the finished product after the high-thermal-conductivity ceramic tile is fired is 0.01 percent.
The preparation method of the high-thermal-conductivity ceramic tile comprises the following steps:
uniformly mixing blank raw materials of the high-thermal-conductivity ceramic tile according to a proportion, and pressing the mixture into a blank, wherein the technological parameters of the blank pressing forming are as follows: 250MPa, 6 times/min;
firing the green body in a roller kiln, wherein the temperature and time of each stage in the firing process are as follows: carrying out heat preservation at 100-500 ℃ for 8min, 500-1185 ℃ for 23min and 1185 ℃ for 8min, and then cooling to the time of discharging from the kiln for 13 min; and obtaining a finished product.
Example 2
The formula of the blank of the high-thermal-conductivity ceramic tile in the embodiment is as follows:
the high thermal conductivity ceramic tile in the embodiment comprises the following chemical components:
| chemical composition | Silicon oxide | Alumina oxide | Iron oxide | Titanium oxide | Calcium oxide |
| Percentage of | 62.5 | 29.55 | 1.23 | 0.85 | 0.28 |
| Chemical composition | Magnesium oxide | Potassium oxide | Sodium oxide | Lithium oxide | Impurities |
| Percentage of | 0.94 | 2.21 | 1.88 | 0.55 | Balance of |
The high heat-conducting ceramic tile has a heat conductivity of 3W/m.K. The thickness of the high-heat-conductivity ceramic tile is 6-7 mm. The strength of a finished product of the high-thermal-conductivity ceramic tile after being fired is 47-52 MPa. The water absorption of the finished product after the high-thermal-conductivity ceramic tile is fired is 0.01 percent.
The preparation method of the high-thermal-conductivity ceramic tile comprises the following steps:
uniformly mixing blank raw materials of the high-thermal-conductivity ceramic tile according to a proportion, and pressing the mixture into a blank, wherein the technological parameters of the blank pressing forming are as follows: 300MPa, 6 times/min;
firing the green body in a roller kiln, wherein the temperature and time of each stage in the firing process are as follows: carrying out heat preservation at 100-500 ℃ for 9min, 500-1185 ℃ for 24min and 1185 ℃ for 9min, and then cooling for 14 min; and obtaining a finished product.
Example 3
The formula of the blank of the high-thermal-conductivity ceramic tile in the embodiment is as follows:
| raw materials | Middle-temperature sand for Taishan mountain | Medium-temperature sand for lotus pond | Xinfeng sand | Zhongshan mountain flour | North sea stone powder |
| Weight percent of | 3 | 3 | 10 | 8 | 20 |
| Raw materials | Mud for four parties | Xinhui mud | Talcum powder | Bauxite | Spodumene |
| Weight percent of | 8 | 15 | 3 | 21 | 9 |
The high thermal conductivity ceramic tile in the embodiment comprises the following chemical components:
| chemical composition | Silicon oxide | Alumina oxide | Iron oxide | Titanium oxide | Calcium oxide |
| Percentage of | 61.99 | 29.9 | 1.25 | 0.87 | 0.29 |
| Chemical composition | Magnesium oxide | Potassium oxide | Sodium oxide | Lithium oxide | Impurities |
| Percentage of | 1.06 | 2.27 | 1.86 | 0.5 | Balance of |
The high heat-conducting ceramic tile has a heat conductivity of 3W/m.K. The thickness of the high-heat-conductivity ceramic tile is 6-7 mm. The strength of a finished product of the high-thermal-conductivity ceramic tile after being fired is 47-52 MPa. The water absorption of the finished product after the high-thermal-conductivity ceramic tile is fired is 0.01 percent.
The preparation method of the high-thermal-conductivity ceramic tile comprises the following steps:
uniformly mixing blank raw materials of the high-thermal-conductivity ceramic tile according to a proportion, and pressing the mixture into a blank, wherein the technological parameters of the blank pressing forming are as follows: 400MPa, 5 times/min;
firing the green body in a roller kiln, wherein the temperature and time of each stage in the firing process are as follows: 10min at 100-500 ℃, 25min at 500-1185 ℃, 10min at 1185 ℃, and cooling for 15min after the temperature is removed from the kiln.
Example 4
The formula of the blank of the high-thermal-conductivity ceramic tile in the embodiment is as follows:
| raw materials | Middle-temperature sand for Taishan mountain | Medium-temperature sand for lotus pond | Xinfeng sand | Zhongshan mountain flour | North sea stone powder |
| Weight percent of | 3.5 | 3.5 | 9 | 8.5 | 19 |
| Raw materials | Mud for four parties | Xinhui mud | Talcum powder | Bauxite | Spodumene |
| Weight percent of | 8.5 | 14 | 3.5 | 22 | 8.5 |
The high thermal conductivity ceramic tile in the embodiment comprises the following chemical components:
| chemical composition | Silicon oxide | Alumina oxide | Iron oxide | Oxidation by oxygenTitanium (IV) | Calcium oxide |
| Percentage of | 61.5 | 3.02 | 1.27 | 0.89 | 0.3 |
| Chemical composition | Magnesium oxide | Potassium oxide | Sodium oxide | Lithium oxide | Impurities |
| Percentage of | 1.17 | 2.28 | 1.87 | 0.45 | Balance of |
The thermal conductivity of the high thermal conductivity ceramic tile is 2.5W/m.K. The thickness of the high-heat-conductivity ceramic tile is 6-7 mm. The strength of a finished product of the high-thermal-conductivity ceramic tile after being fired is 47-52 MPa. The water absorption of the finished product after the high-thermal-conductivity ceramic tile is fired is 0.01 percent.
The preparation method of the high-thermal-conductivity ceramic tile comprises the following steps:
uniformly mixing blank raw materials of the high-thermal-conductivity ceramic tile according to a proportion, and pressing the mixture into a blank, wherein the technological parameters of the blank pressing forming are as follows: 450MPa, 4 times/min;
firing the green body in a roller kiln, wherein the temperature and time of each stage in the firing process are as follows: carrying out heat preservation at 100-500 ℃ for 11min, 500-1185 ℃ for 26min and 1185 ℃ for 11min, and then cooling for 16 min; and obtaining a finished product.
Example 5
The formula of the blank of the high-thermal-conductivity ceramic tile in the embodiment is as follows:
the high thermal conductivity ceramic tile in the embodiment comprises the following chemical components:
| chemical composition | Silicon oxide | Alumina oxide | Iron oxide | Titanium oxide | Calcium oxide |
| Percentage of | 61.57 | 30.5 | 1.3 | 0.91 | 0.28 |
| Chemical composition | Magnesium oxide | Potassium oxide | Sodium oxide | Lithium oxide | Impurities |
| Percentage of | 0.81 | 2.3 | 2.3 | 0.4 | Balance of |
The thermal conductivity of the high thermal conductivity ceramic tile is 2.5W/m.K. The thickness of the high-heat-conductivity ceramic tile is 6-7 mm. The strength of a finished product of the high-thermal-conductivity ceramic tile after being fired is 47-52 MPa. The water absorption of the finished product after the high-thermal-conductivity ceramic tile is fired is 0.01 percent.
The preparation method of the high-thermal-conductivity ceramic tile comprises the following steps:
uniformly mixing blank raw materials of the high-thermal-conductivity ceramic tile according to a proportion, and pressing the mixture into a blank, wherein the technological parameters of the blank pressing forming are as follows: 500MPa, 4 times/min;
firing the green body in a roller kiln, wherein the temperature and time of each stage in the firing process are as follows: carrying out heat preservation at 100-500 ℃ for 12min, 500-1185 ℃ for 27min and 1185 ℃ for 12min, and then cooling to the time of discharging from the kiln for 17 min; and obtaining a finished product.
Comparative example 1
The formula of the ceramic tile blank in the comparative example is as follows:
| raw materials | Quartz sand | Clay clay | Feldspar |
| Weight percent of | 30 | 40 | 30 |
The ceramic tile is a common floor tile, the thickness of the ceramic tile is 12-18 mm, the heat conductivity coefficient is 1.3-1.5W/m.K, and the water absorption rate is 0.5%.
The production process of the ceramic tile comprises the following steps: uniformly mixing the raw materials of the blank body according to the formula proportion, and pressing the mixture into the blank body, wherein the technological parameters of the body pressing forming are as follows: 700MPa, 4 times/min; the sintering temperature is 1250 ℃, and the sintering period is 90 min.
The following table shows the product performance and process comparison of the high thermal conductivity ceramic tile of the present invention with the conventional ceramic tile of the comparative example.
From the above comparison it can be seen that:
the high-thermal-conductivity ceramic tile has a thermal conductivity coefficient of 2.5-3.5W/m.K and high thermal performance; the thickness of the finished product is small, so that the heat conduction speed can be improved; the strength of the finished product is 47-52 MPa, and meets the requirement that the strength is more than or equal to 27MPa in national standards; the finished product has compact structure and low water absorption; the sintering period is short, the sintering time is short, the sintering process is easy to control, and the sintering cost is low.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (9)
1. The high-thermal-conductivity ceramic tile is characterized by comprising the following chemical components: 61-63% of silicon oxide, 29-31% of aluminum oxide, 1-1.5% of ferric oxide, 0.85-0.9% of titanium oxide, 0.27-0.31% of calcium oxide, 2.1-2.35% of potassium oxide, 1.75-2% of sodium oxide, 0.4-0.6% of lithium oxide, 0.81%, 0.94%, 1.06%, 1.17% or 1.29% of magnesium oxide, and the balance of impurities;
the heat conductivity coefficient of the high-heat-conductivity ceramic tile is 2.5-3.5W/m.K;
the blank body raw materials of the high-thermal-conductivity ceramic tile comprise the following components in percentage by weight: 2-4% of warm sand in Taishan mountain, 2-4% of warm sand in lotus pond, 8-12% of Xinfeng sand, 7-9% of Zhongshan mountain stone powder, 18-22% of North sea stone powder, 7-9% of mud of Sihui, 13-17% of mud of Xinhui, 2-4% of talcum powder, 19-23% of bauxite and 8-10% of spodumene.
2. The high thermal conductivity tile according to claim 1, wherein the chemical composition of the high thermal conductivity tile is: 61.99% of silicon oxide, 29.9% of aluminum oxide, 1.25% of iron oxide, 0.87% of titanium oxide, 0.29% of calcium oxide, 1.06% of magnesium oxide, 2.27% of potassium oxide, 1.86% of sodium oxide, 0.5% of lithium oxide and the balance of impurities.
3. The high-thermal-conductivity ceramic tile as claimed in claim 2, wherein the green body raw materials of the high-thermal-conductivity ceramic tile are as follows by weight percentage: 3% of Taishan medium temperature sand, 3% of lotus pond medium temperature sand, 10% of Xinfeng sand, 8% of Zhongshan mountain powder, 20% of North sea stone powder, 8% of Sihui mud, 15% of Xinhui mud, 3% of talcum powder, 21% of bauxite and 9% of spodumene.
4. The high thermal conductivity tile according to any one of claims 1 to 3, wherein the strength of the fired product of the high thermal conductivity tile is 47 to 52 MPa.
5. The high thermal conductivity tile according to any one of claims 1 to 3, wherein the water absorption of the fired product is 0.01%.
6. A preparation method of the high-thermal-conductivity ceramic tile as claimed in any one of claims 1 to 3, characterized by comprising the following steps:
uniformly mixing the blank raw materials of the high-thermal-conductivity ceramic tile according to a proportion, and pressing the mixture into a blank, wherein the technological parameters of the blank pressing forming are as follows: 250-500 MPa, 4-6 times/min;
firing the green body in a roller kiln, wherein the temperature and time of each stage in the firing process are as follows: carrying out heat preservation for 8-12 min at 100-500 ℃, 23-27 min at 500-1185 ℃ and 8-12 min at 1185 ℃, and then cooling for 13-17 min until the material is taken out of the kiln;
and obtaining a finished product.
7. The preparation method of the high-thermal-conductivity ceramic tile as claimed in claim 6, wherein the green body is put into a roller kiln for firing, and the temperature and the time of each stage in the firing process are as follows in sequence: 10min at 100-500 ℃, 25min at 500-1185 ℃, 10min at 1185 ℃, and cooling for 15min after the temperature is removed from the kiln.
8. The preparation method of the high-thermal-conductivity ceramic tile according to claim 6, wherein the strength of the fired ceramic tile is 47-52 MPa.
9. The method for preparing the high thermal conductivity tile according to claim 6, wherein the water absorption of the finished product after firing of the high thermal conductivity tile is 0.01%.
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