High-strength ceramic tile and method for manufacturing the same

Abstract

The application relates to the technical field of ceramic tiles, and particularly discloses a high-strength ceramic tile and a preparation method thereof. The high-strength ceramic tile is mainly made of the following raw materials in parts by weight: 20-30 parts of sodium feldspar, 15-25 parts of potassium feldspar, 10-20 parts of coal gangue, 2-8 parts of dolomite, 10-20 parts of kaolin, 5-15 parts of bentonite, 3-5 parts of superfine silicon powder, 3-5 parts of superfine titanium white powder, 1-3 parts of modified pre-oxidized fiber, and 0.2-0.8 parts of a dispersing agent; the modified pre-oxidized fiber is obtained by grafting acetoxypropyltrimethoxysilane and tetraethylenepentamine onto pre-oxidized fiber. The ceramic tile has the characteristics of high breaking strength, high modulus of rupture and high wear resistance, exhibits good comprehensive performance, and meets market demands.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of ceramic tiles, in particular to a high-strength ceramic tile and a preparation method thereof. BACKGROUND

[0002] In the building decoration industry, ceramic tiles are widely used in indoor and outdoor walls, floors, kitchen and bathroom spaces due to their strong chemical corrosion resistance, good fire resistance, easy cleaning and strong decoration. With the continuous development of the building decoration industry, ceramic tiles are also applied to shopping malls, airports and subway stations, and at this time, higher requirements are put forward for the strength of ceramic tiles. Traditional ceramic tiles are mainly prepared from sodium feldspar, potassium feldspar, coal gangue, dolomite, mullite, quartz stone, talc powder, kaolin and the like, and the fracture modulus of the obtained ceramic tiles is generally about 35 MPa, and the strength is slightly poor. In the actual use process, the ceramic tiles may be broken and crushed, and therefore, it is urgent to research a high-strength ceramic tile with high fracture modulus. SUMMARY

[0003] In order to improve the fracture modulus of the ceramic tile, the application provides a high-strength ceramic tile and a preparation method thereof.

[0004] In the first aspect, the application provides a high-strength ceramic tile, which adopts the following technical scheme:

[0005] A high-strength ceramic tile is prepared from the following raw materials by weight: 20-30 parts of sodium feldspar, 15-25 parts of potassium feldspar, 10-20 parts of coal gangue, 2-8 parts of dolomite, 10-20 parts of kaolin, 5-15 parts of bentonite, 3-5 parts of ultra-fine silicon powder, 3-5 parts of ultra-fine titanium white powder, 1-3 parts of modified pre-oxidized fiber, and 0.2-0.8 parts of dispersant; the modified pre-oxidized fiber is obtained by grafting acetoxypropyltrimethoxysilane and tetraethylenepentamine onto pre-oxidized fiber.

[0006] The high-strength ceramic tile of the application has the characteristics of high damage strength, high fracture modulus, high wear resistance and excellent linear thermal expansion coefficient through the mutual cooperation of the raw materials, and the damage strength is greater than 2700N, the fracture modulus is greater than 52 MPa, and the grinding pit volume is less than 80mm 2 , and the linear thermal expansion coefficient is about 6.5x10 -6 -4 / ℃, so that the ceramic tile has the characteristics of high damage strength, high fracture modulus, high wear resistance and excellent linear thermal expansion coefficient, and exhibits good comprehensive performance and meets the market demand.

[0007] The modified pre-oxidized fiber is added to the raw material of the ceramic tile, and the pre-oxidized fiber is grafted by acetoxypropyltrimethoxysilane and tetraethylenepentamine, so as to effectively increase the active groups such as siloxyl, amide group and secondary amine group on the surface of the modified pre-oxidized fiber. Not only the interface bonding strength and the compactness between the raw materials are increased, but also the mechanical properties of the body are improved. The three-dimensional network carbon structure is formed in the ceramic tile, the integrity of the ceramic tile is improved, and the mechanical properties of the ceramic tile are enhanced. The ultra-fine silicon powder and the ultra-fine titanium white powder are added to the raw material, and the synergistic effect between the two is achieved. Not only the compactness is increased, but also the reactivity is improved. Meanwhile, the titanium carbide and the silicon carbide are formed by the reaction between the carbon and the titanium carbide and the silicon carbide, the structural strength is enhanced, and the breaking strength, the modulus of rupture and the wear resistance of the ceramic tile are improved.

[0008] Optionally, the modified pre-oxidized fiber is prepared by the following method:

[0009] T1, acetoxypropyltrimethoxysilane is added to water and then the pre-oxidized fiber is added, stirring for 6-10 hours, filtering, and obtaining the silane grafted pre-oxidized fiber;

[0010] T2, tetraethylenepentamine is added to ethanol and then the silane grafted pre-oxidized fiber is added, stirring for 20-25 hours, filtering, washing, drying, and obtaining the modified pre-oxidized fiber.

[0011] Optionally, the weight ratio of the pre-oxidized fiber, acetoxypropyltrimethoxysilane and tetraethylenepentamine is (9-11):(2-4):(2-3).

[0012] By using the above technical solution, the acetoxypropyltrimethoxysilane contains siloxyl and ester groups. The siloxyl is used to graft the acetoxypropyltrimethoxysilane to the surface of the pre-oxidized fiber, and the siloxyl and the ester group are introduced. Then, the tetraethylenepentamine is added. The tetraethylenepentamine contains primary amine group and secondary amine group. The primary amine group and the ester group are used to graft the tetraethylenepentamine to the surface of the pre-oxidized fiber, and the amide group and the secondary amine group are introduced. The modified pre-oxidized fiber is obtained. In the preparation method of the modified pre-oxidized fiber, the acetoxypropyltrimethoxysilane and the tetraethylenepentamine are grafted to the surface of the pre-oxidized fiber in two steps, the surface active groups and the branch length are increased, the compactness and the bonding strength of the body are improved, and the mechanical properties of the ceramic tile are enhanced.

[0013] Optionally, the weight ratio of the pre-oxidized fiber, water and ethanol is (9-11):(50-150):(50-150).

[0014] By adopting the above technical scheme, the use amount of water is limited, which not only facilitates the dispersion of the pre-oxidized fiber in water, but also enables the pre-oxidized fiber and the acetoxypropyltrimethoxysilane to fully contact, thereby increasing the grafting stability. Meanwhile, the use amount of ethanol is also limited, which not only facilitates the dispersion of the silane-grafted pre-oxidized fiber, but also enables the silane-grafted pre-oxidized fiber and the tetraethylenepentamine to fully contact, thereby increasing the stability of the modified pre-oxidized fiber preparation.

[0015] Optionally, the pre-oxidized fiber has a fineness of 1.5-2D and an average length of 10-30mm.

[0016] By adopting the above technical scheme, the fineness and length of the pre-oxidized fiber are limited, which not only facilitates the selection of the pre-oxidized fiber, but also enables the pre-oxidized fiber to maintain an excellent aspect ratio, thereby increasing the interaction between raw materials and improving the use effect of the modified pre-oxidized fiber and the mechanical properties of the ceramic tile.

[0017] Optionally, the pre-oxidized fiber is a polyacrylonitrile pre-oxidized fiber. In multiple embodiments, the pre-oxidized fiber has a fineness of 1.5D, which can also be set to 1.8D, 2D, etc. according to needs. In multiple embodiments, the pre-oxidized fiber has an average length of 20mm, which can also be set to 10mm, 15mm, 25mm, 30mm, etc. according to needs.

[0018] Optionally, the average particle size of the ultra-fine silicon powder is 0.1-5μm, and the average particle size of the ultra-fine titanium dioxide powder is 0.1-5μm.

[0019] By adopting the above technical scheme, the average particle sizes of the ultra-fine silicon powder and the ultra-fine titanium dioxide powder are limited, which facilitates the selection of the ultra-fine silicon powder and the ultra-fine titanium dioxide powder. In multiple embodiments, the average particle size of the ultra-fine silicon powder is 2μm, which can also be set to 0.1μm, 0.5μm, 1μm, 1.5μm, 2.5μm, 3μm, 3.5μm, 4μm, 4.5μm, 5μm, etc. according to needs. In multiple embodiments, the average particle size of the ultra-fine titanium dioxide powder is 3μm, which can also be set to 0.1μm, 0.5μm, 1μm, 2μm, 1.5μm, 2.5μm, 3.5μm, 4μm, 4.5μm, 5μm, etc. according to needs.

[0020] Optionally, the dispersant is one or more of dispersant DOLAPIX G 10, dispersant DOLAPIX CE 64, and dispersant GIESSFIX C 30.

[0021] By adopting the technical scheme, the dispersant is limited, the selection of the dispersant is facilitated, and the dispersant DOLAPIX G 10, the dispersant DOLAPIX CE 64 and the dispersant GIESSFIX C 30 can improve the flowability and uniformity of the raw materials, facilitate the processing of the ceramic tiles, and guarantee the quality and the qualified rate of the ceramic tiles.

[0022] In the multiple embodiments, the dispersant is the dispersant DOLAPIX G 10, and the dispersant can also be set as the dispersant DOLAPIX CE 64, the dispersant GIESSFIX C 30, a mixture of the dispersant DOLAPIX G 10 and the dispersant DOLAPIX CE 64, a mixture of the dispersant DOLAPIX G 10 and the dispersant GIESSFIX C 30, etc. according to the needs.

[0023] In the second aspect, the application provides a preparation method of the high-strength ceramic tile.

[0024] S1, mixing the albite, the potassium feldspar, the coal gangue, the dolomite and the dispersant, ball milling to obtain a premix;

[0025] S2, adding the kaolin, the bentonite, the ultra-fine silicon powder, the ultra-fine titanium dioxide and the modified pre-oxidized fiber into the premix to obtain a mixture;

[0026] S3, placing the mixture in a mold and machine pressing to form a green body;

[0027] S4, baking the green body under an inert gas and cooling to obtain a ceramic tile.

[0028] By adopting the technical scheme, the preparation of the ceramic tile is facilitated.

[0029] Optionally, in the step S1, the sieve residue of the premix through a 300-mesh sieve is ≤0.5wt%.

[0030] By adopting the technical scheme, the sieving is performed on the ball-milled raw materials, the premix maintains a good particle size, the situation that the porosity of the ceramic tile is increased due to the too large particle size of the premix is avoided, and the sieve residue of the premix through a 300-mesh sieve is ≤0.5wt%, so that the ceramic tile maintains good mechanical properties.

[0031] Optionally, in the baking of the step S4, the temperature is first increased to 800-900℃, the baking treatment is performed for 5-15min, then the temperature is increased to 1170-1230℃, and the baking treatment is performed for 40-60min.

[0032] By adopting the technical scheme, the green body is fired in two steps, the cracking of the ceramic tile is reduced, and the quality and the qualified rate of the ceramic tile are ensured.

[0033] In summary, the present application has at least the following beneficial effects:

[0034] 1. The high-strength ceramic tile of the present application forms a three-dimensional network carbon structure in the ceramic tile through the mutual cooperation of raw materials, improves the integrity and bonding strength of the ceramic tile, and has a breaking strength >2700N, a fracture modulus >52MPa, and a grinding pit volume <80mm 2 , so that the ceramic tile has high breaking strength, high fracture modulus, and high wear resistance, exhibits good comprehensive performance, and meets market demand.

[0035] 2. In the preparation method of the modified pre-oxidized fiber, acetoxypropyltrimethoxysilane is grafted to the surface of the pre-oxidized fiber by using siloxyl groups, and then tetraethylenepentamine is grafted to the surface of the pre-oxidized fiber by using amidation reaction, so as to increase the active groups such as siloxyl groups, amide groups, and secondary amine groups on the surface of the modified pre-oxidized fiber, increase the interfacial bonding strength, improve the mechanical properties of the green body, enhance the integrity of the ceramic tile, and make the ceramic tile exhibit better performance. DETAILED DESCRIPTION

[0036] In order to make the present application easier to understand, the present application will be further described in detail below in combination with embodiments, which only serve an illustrative purpose and are not limited to the application range of the present application. The raw materials or components used in the present application can be prepared by commercial channels or conventional methods if not specifically stated.

[0037] Preparation Example

[0038] Preparation Example 1

[0039] A modified pre-oxidized fiber is prepared by the following method:

[0040] T1, under constant stirring, 3g of acetoxypropyltrimethoxysilane is added to 100g of water, and stirred for 5min. Then 10g of pre-oxidized fiber is added and stirred for 8h. Then filtration is performed to obtain silane-grafted pre-oxidized fiber.

[0041] Pre-oxidized fiber is polyacrylonitrile pre-oxidized fiber, the fineness of the pre-oxidized fiber is 1.5D, the average length is 20mm, and it is selected from Guangdong Kaidun New Material Co., Ltd.

[0042] T2, under constant stirring, 2.6g of tetraethylenepentamine was added into 100g of ethanol, stirring for 5min. Then the silane grafted pre-oxidized fiber obtained in step T1 was added, stirring for 23h. After that, filtration was carried out. Washing with 50g of ethanol, washing with 50g of ethanol solution with a mass concentration of 50%, washing with 50g of water. Drying at a temperature of 100℃, obtaining the modified pre-oxidized fiber.

[0043] Preparation Example 2

[0044] A modified pre-oxidized fiber was prepared by the following method:

[0045] T1, under constant stirring, 2.6g of tetraethylenepentamine was added into 100g of ethanol, stirring for 5min. Then the silane grafted pre-oxidized fiber obtained in step T1 was added, stirring for 23h. After that, filtration was carried out. Washing with 50g of ethanol, washing with 50g of ethanol solution with a mass concentration of 50%, washing with 50g of water. Drying at a temperature of 100℃, obtaining the modified pre-oxidized fiber.

[0046] The pre-oxidized fiber is a polyacrylonitrile pre-oxidized fiber, the fineness of the pre-oxidized fiber is 1.5D, the average length is 20mm, and the pre-oxidized fiber is selected from Guangdong Kaidun New Material Co., Ltd.

[0047] T2, under constant stirring, 2.6g of tetraethylenepentamine was added into 100g of ethanol, stirring for 5min. Then the silane grafted pre-oxidized fiber obtained in step T1 was added, stirring for 23h. After that, filtration was carried out. Washing with 50g of ethanol, washing with 50g of ethanol solution with a mass concentration of 50%, washing with 50g of water. Drying at a temperature of 100℃, obtaining the modified pre-oxidized fiber.

[0048] Preparation Example 3

[0049] A modified pre-oxidized fiber was prepared by the following method:

[0050] T1, under constant stirring, 2.6g of tetraethylenepentamine was added into 100g of ethanol, stirring for 5min. Then the silane grafted pre-oxidized fiber obtained in step T1 was added, stirring for 23h. After that, filtration was carried out. Washing with 50g of ethanol, washing with 50g of ethanol solution with a mass concentration of 50%, washing with 50g of water. Drying at a temperature of 100℃, obtaining the modified pre-oxidized fiber.

[0051] The pre-oxidized fiber is a polyacrylonitrile pre-oxidized fiber, the fineness of the pre-oxidized fiber is 1.5D, the average length is 20mm, and the pre-oxidized fiber is selected from Guangdong Kaidun New Material Co., Ltd.

[0052] T2, under constant stirring, 2 g of tetraethylenepentamine was added into 50 g of ethanol, and stirred for 5 min. Then the silane grafted pre-oxidized fiber obtained in step T1 was added, and stirred for 20 h. After that, filtration was performed. Washing was performed with 50 g of ethanol, 50 g of ethanol solution with a mass concentration of 50%, and 50 g of water. Drying was performed at a temperature of 100℃, and modified pre-oxidized fiber was obtained.

[0053] Example

[0054] Table 1: Raw material usage of ceramic tile (unit: x 10 g)

[0055] Example Example 1 Example 2 Example 3 Sodium feldspar 25 20 30 Potassium feldspar 20 25 15 Coal gangue 15 20 10 Dolomite 5 2 8 Kaolin 15 10 20 Bentonite 10 15 5 Superfine silicon powder 4 3 5 Superfine titanium dioxide 4 5 3 Modified pre-oxidized fiber 2 1 3 Dispersant 0.5 0.2 0.8

[0056] Example 1

[0057] A high-strength ceramic tile, the raw materials and the raw material ratio of which are shown in Table 1.

[0058] Among them, the albite, the potassium feldspar, the coal gangue and the dolomite are all selected from the Lingshou County Zhuoye Mineral Product Processing Factory; the bentonite is a sodium-based bentonite, and the sodium-based bentonite and the kaolin are all selected from the Hebei Hengyue Mineral Product Co., Ltd.; the average particle size of the ultra-fine silicon powder is 2 μm; the average particle size of the ultra-fine titanium white powder is 3 μm; the dispersing agent is dispersing agent DOLAPIX G 10; and the modified pre-oxidized fiber is prepared by the method of Preparation Example 1.

[0059] A method for preparing a high-strength ceramic tile, comprising the following steps:

[0060] S1, under constant stirring, the albite was added with the potassium feldspar, the coal gangue, the dolomite and the dispersing agent, and stirred for 5 min. Then ball milling was performed until the sieve residue amount of the mixture passing through a 300-mesh sieve was 0.2 wt%, and a premix was obtained.

[0061] S2, under constant stirring, the kaolin, the bentonite, the ultra-fine silicon powder, the ultra-fine titanium white powder and the modified pre-oxidized fiber were added into the premix, and stirred for 5 min, and a mixture was obtained.

[0062] S3, the mixture was placed in a mold and machine-pressed to form a green body.

[0063] S4, under nitrogen, the green body was heated to 850℃, and heat-treated for 10 min, then heated to 1200℃, and heat-treated for 50 min, and cooled to 25℃, and a ceramic tile was obtained.

[0064] Example 2

[0065] A high-strength ceramic tile, which is different from the ceramic tile of Example 1 in that the raw material ratio of the ceramic tile is different, and the raw material ratio of the ceramic tile is shown in Table 1.

[0066] Example 3

[0067] A high-strength ceramic tile, which differs from Example 1 in that the raw materials of the ceramic tile are different, and the raw materials of the ceramic tile are shown in Table 1.

[0068] Example 4

[0069] A high-strength ceramic tile, which differs from Example 1 in that the source of the modified pre-oxidized fiber in the raw materials of the ceramic tile is different, and the modified pre-oxidized fiber is prepared by the method of Preparation Example 2.

[0070] Example 5

[0071] A high-strength ceramic tile, which differs from Example 1 in that the source of the modified pre-oxidized fiber in the raw materials of the ceramic tile is different, and the modified pre-oxidized fiber is prepared by the method of Preparation Example 3.

[0072] Comparative Example

[0073] Comparative Example 1

[0074] A high-strength ceramic tile, which differs from Example 1 in that in the raw materials of the ceramic tile, an equal amount of ultra-fine silicon powder is used to replace the ultra-fine titanium dioxide.

[0075] Comparative Example 2

[0076] A high-strength ceramic tile, which differs from Example 1 in that in the raw materials of the ceramic tile, an equal amount of ultra-fine titanium dioxide is used to replace the ultra-fine silicon powder.

[0077] Comparative Example 3

[0078] A high-strength ceramic tile, which differs from Example 1 in that in the raw materials of the ceramic tile, an equal amount of pre-oxidized fiber is used to replace the modified pre-oxidized fiber.

[0079] Comparative Example 4

[0080] A high-strength ceramic tile, which differs from Example 1 in that in the preparation method of the modified pre-oxidized fiber of the raw materials of the ceramic tile, an equal amount of acetoxypropyltrimethoxysilane is used to replace tetraethylenepentamine.

[0081] Comparative Example 5

[0082] A high-strength ceramic tile, which differs from Example 1 in that in the preparation method of the modified pre-oxidized fiber of the raw materials of the ceramic tile, an equal amount of tetraethylenepentamine is used to replace acetoxypropyltrimethoxysilane.

[0083] Performance detection

[0084] The ceramic tiles obtained in Examples 1-5 and Comparative Examples 1-5 were taken as samples, and the samples were subjected to the following performance detection, and the detection results are shown in Table 2.

[0085] According to GB / T3810.4-2016 "Ceramic tiles-determination of strength properties-part 4: breaking strength and modulus of rupture", the breaking strength and modulus of rupture of the sample are detected.

[0086] According to GB / T3810.6-2016 "Ceramic tiles-determination of strength properties-part 6: abrasion resistance of unglazed tiles", the volume of the sample is detected.

[0087] According to GB / T3810.8-2016 "Ceramic tiles-determination of strength properties-part 8: linear thermal expansion", the linear thermal expansion coefficient of the sample is detected.

[0088] Table 2 detection results

[0089]

[0090] As can be seen from Table 2, the ceramic tile of the present application has high breaking strength and modulus of rupture, the breaking strength is 2716-3054N, and the modulus of rupture is 52.1-54.6MPa, so that the ceramic tile exhibits higher mechanical properties. Moreover, it also has a lower volume of grinding pit, the volume of grinding pit is 67-79mm 2 , so that the ceramic tile exhibits higher abrasion resistance. At the same time, it also has a good linear thermal expansion coefficient, the linear thermal expansion coefficient is 6.45x10 -6 -6.57x10 -6 ℃, so that the ceramic tile exhibits good thermal stability. The ceramic tile of the present application has good comprehensive performance through the mutual cooperation of raw materials, which meets the market demand.

[0091] Comparing Example 1 with Comparative Examples 1-2, Comparative Example 1 adds ultra-fine silicon powder to the raw materials of the ceramic tile; Comparative Example 2 adds ultra-fine titanium dioxide powder to the raw materials of the ceramic tile; Example 1 adds ultra-fine silicon powder and ultra-fine titanium dioxide powder to the raw materials of the ceramic tile. It can be seen that the addition of ultra-fine silicon powder and ultra-fine titanium dioxide powder to the raw materials of the ceramic tile and the synergistic effect between the two greatly increase the breaking strength, modulus of rupture and abrasion resistance of the ceramic tile.

[0092] Comparing Example 1 with Comparative Examples 3-5, Comparative Example 3 added pre-oxidized fiber to the ceramic tile raw material; Comparative Example 4 added acetoxypropyltrimethoxysilane-grafted pre-oxidized fiber to the ceramic tile raw material; Comparative Example 5 added tetraethylenepentamine-grafted pre-oxidized fiber to the ceramic tile raw material; and Example 1 added acetoxypropyltrimethoxysilane and tetraethylenepentamine-grafted pre-oxidized fiber to the ceramic tile raw material. It can be seen that grafting pre-oxidized fiber with acetoxypropyltrimethoxysilane and tetraethylenepentamine, and through the synergistic effect of the two, introduces active groups such as siloxy groups, amide groups, and secondary amine groups onto the surface of the pre-oxidized fiber, increasing the interfacial bonding strength of the raw material, improving the mechanical properties of the ceramic body, and enhancing the overall integrity and mechanical properties of the ceramic tile.

[0093] It should be noted that the embodiments described above are only for explaining this application and do not constitute any limitation on this application. This application has been described with reference to typical embodiments, but it should be understood that the terms used therein are descriptive and explanatory terms, not limiting terms. Modifications can be made to this application within the scope of the claims, and revisions can be made to the invention without departing from the scope and spirit of this application. Although the application described herein relates to specific methods, materials, and embodiments, it does not mean that this application is limited to the specific examples disclosed herein; on the contrary, this application can be extended to all other methods and applications with the same function.

Claims

1. A high-strength ceramic tile, characterized in that: It is made from the following raw materials in parts by weight: 20-30 parts sodium feldspar, 15-25 parts potassium feldspar, 10-20 parts coal gangue, 2-8 parts dolomite, 10-20 parts kaolin, 5-15 parts bentonite, 3-5 parts ultrafine silica powder, 3-5 parts ultrafine titanium dioxide, 1-3 parts modified pre-oxidized fiber, and 0.2-0.8 parts dispersant; the modified pre-oxidized fiber is obtained by grafting acetoxypropyltrimethoxysilane and tetraethylenepentamine onto the pre-oxidized fiber. The modified pre-oxidized fiber was prepared using the following method: T1. Add acetoxypropyltrimethoxysilane to water and mix, then add pre-oxidized fiber, stir for 6-10 hours, filter, and obtain silane-grafted pre-oxidized fiber. T2. Add tetraethylenepentamine to ethanol and mix, then add silane-grafted pre-oxidized fiber, stir for 20-25 hours, filter, wash, and dry to obtain modified pre-oxidized fiber. The weight ratio of the pre-oxidized fiber, acetoxypropyltrimethoxysilane, and tetraethylenepentamine is (9-11):(2-4):(2-3); the weight ratio of the pre-oxidized fiber, water, and ethanol is (9-11):(50-150):(50-150). High-strength ceramic tiles are prepared using the following methods: S1. Mix sodium feldspar, potassium feldspar, coal gangue, dolomite, and dispersant, and ball mill to obtain a premix; S2. Add kaolin, bentonite, ultrafine silica powder, ultrafine titanium dioxide, and modified pre-oxidized fiber to the premix and mix to obtain a mixture. S3. Place the mixture in a mold and press it into shape to obtain a blank; S4. Under inert gas, the green body is fired and cooled to obtain ceramic tile.

2. The high-strength ceramic tile according to claim 1, characterized in that: The pre-oxidized fiber has a fineness of 1.5-2D and an average length of 10-30mm.

3. A high-strength ceramic tile according to claim 1, characterized in that: The average particle size of the ultrafine silicon powder is 0.1-5 μm, and the average particle size of the ultrafine titanium dioxide is 0.1-5 μm.

4. A high-strength ceramic tile according to claim 1, characterized in that: The dispersant is one or more of the following: DOLAPIX G 10, DOLAPIX CE 64, and GIESSFIX C 30.

5. A high-strength ceramic tile according to claim 1, characterized in that: In step S1, the amount of residue on the premix after passing through a 300-mesh sieve is ≤0.5wt.

6. A high-strength ceramic tile according to claim 1, characterized in that: In step S4, the temperature is first raised to 800-900℃ and kept at that temperature for 5-15 minutes, then raised to 1170-1230℃ and kept at that temperature for 40-60 minutes.

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