Antiskid and antifouling granite ceramic tile and preparation method thereof

Abstract

The application belongs to the technical field of ceramic tiles, and particularly discloses a kind of granite ceramic tiles and preparation method of antislip and antifouling, including granite body layer, antifouling glaze layer on the surface of granite body layer and antislip particles arranged on the surface of antifouling glaze layer;Wherein, the raw materials of antifouling glaze layer include the following components by weight: 15~25 parts of sodium feldspar, 15~25 parts of wollastonite, 4~8 parts of calcite, 2~5 parts of quartz, 8~12 parts of barium carbonate, 8~12 parts of low-temperature frit, 15~25 parts of high-temperature frit;The raw materials of antislip particles include the following components by weight: 55~65 parts of alumina, 1~3 parts of potassium feldspar, 15~20 parts of quartz, 1~3 parts of sodium feldspar, 5~8 parts of barium carbonate.The application takes alumina as the antislip functional component, takes antifouling glaze layer as the matrix, utilizes the melting temperature difference between the two, and when high-temperature sintering, the raw materials of low-melting-point antifouling glaze layer are fused flat, high-melting-point alumina is not fused but protrudes from the surface of antifouling glaze layer, so as to achieve the effect of antifouling, antislip and wear resistance.

Description

Technical Field

[0001] This invention relates to the field of ceramic tile technology, and in particular to a non-slip and stain-resistant granite ceramic tile and its preparation method. Background Technology

[0002] In recent years, using common inorganic minerals as the main matrix raw material and different colored powders as colorants, granite-like ceramic tiles with uneven surfaces have been produced through multi-step granulation, mixing, high-tonnage press molding, and roller kiln firing. These tiles partially replace natural stone and are used in plazas, high-end hotels, buildings, gardens, villas, roadside paving, and parking lot installations. Through careful selection of raw materials and production formulation, granite ceramic tiles can achieve consistent colors and patterns, and their high hardness provides better stability. The emergence of granite ceramic tiles has alleviated the pressure on the demand for natural granite and reduced the consumption of natural stone. While the uneven surface of the tile body provides a granite-like decorative and anti-slip effect, the rough surface inevitably sacrifices the transparency and stain resistance of ceramic tiles. Therefore, there is a need to develop a ceramic tile that not only does not reduce the granite-like decorative effect of the granite body but also greatly enhances the product's texture, stain resistance, anti-slip properties, and wear resistance. Summary of the Invention

[0003] In order to overcome the defects of the existing technology, the present invention provides a non-slip and stain-resistant granite ceramic tile and a preparation method thereof.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] This invention provides a non-slip and stain-resistant granite ceramic tile, comprising a granite body layer, a stain-resistant glaze layer on the surface of the granite body layer, and non-slip particles disposed on the surface of the stain-resistant glaze layer.

[0006] The raw materials of the antifouling glaze layer include the following components in parts by weight: 15-25 parts of albite, 15-25 parts of wollastonite, 4-8 parts of calcite, 2-5 parts of quartz, 8-12 parts of barium carbonate, 8-12 parts of low-temperature frit, and 15-25 parts of high-temperature frit.

[0007] The raw materials of the anti-slip particles include the following components in parts by weight: 55-65 parts alumina, 1-3 parts potassium feldspar, 15-20 parts quartz, 1-3 parts sodium feldspar, and 5-8 parts barium carbonate.

[0008] The technical principle of this solution lies in the following: In the formulation of the anti-fouling glaze, calcium oxide is introduced in the form of calcite, and sodium oxide is introduced in the form of albite. The main function of calcium oxide in the glaze is as a flux, which can reduce the high-temperature viscosity of the glaze (especially at higher temperatures, the reduction in glaze viscosity increases significantly with further increases in temperature). This characteristic facilitates the formation of a continuous glaze layer on the uneven surface of the granite body. Simultaneously, calcium oxide can increase the refractive index of the glass and reduce dispersion, which helps to enhance the display of details in the granite body without compromising its decorative effect.

[0009] Sodium oxide, when incorporated into the anti-fouling glaze formulation, exhibits a strong fluxing effect due to the low strength of sodium's oxygen bonds and its tendency to form a low-temperature eutectic with silicon and aluminum. This significantly reduces the initial melting temperature, melting temperature, and leveling temperature of the glaze and microcrystalline glass. Therefore, increasing the sodium oxide content effectively lowers the glaze's melting temperature and viscosity, increases the melt refractive index, and thus improves gloss, which is beneficial for the decorative effect of the granite body layer. Furthermore, sodium oxide is an intermediate active component in terms of surface tension, with a characteristic constant value close to zero. Appropriately increasing the sodium oxide content reduces the surface tension of the glaze formulation, enhancing its wettability on the uneven surface of the granite body layer and increasing its anti-fouling ability.

[0010] Therefore, by increasing the content of calcium oxide and sodium oxide in the formulation of the antifouling glaze, the transparency, refractive index, gloss and antifouling performance of the antifouling glaze can be improved, and the wetting ability of the glaze on the uneven surface of the granite body can be optimized.

[0011] While anti-slip particles give ceramic tiles their anti-slip properties, they are also susceptible to wear. Therefore, wear resistance must also be considered. Thus, anti-slip particles need to meet the requirements of high melting point and high hardness. Therefore, the raw material for anti-slip particles includes alumina, preferably corundum-type alumina, especially large-particle-size (>10μm) alumina powder, which is inexpensive and readily available. Additionally, it is preferable to introduce a certain amount of feldspar, quartz, and barium carbonate into the anti-slip particles. This aims to optimize the interfacial bonding between alumina and the anti-fouling glaze layer and appropriately lower the softening temperature of the anti-slip particles. Instead of increasing the proportion of feldspar, quartz, and barium carbonate in the anti-fouling glaze layer formula, the feldspar, quartz, and barium carbonate are pre-ground with alumina using mechanical grinding. This pre-grinding allows alumina to form bonds with other minerals, which not only facilitates the preferential reaction of feldspar, quartz, and barium carbonate with alumina, lowering its softening temperature, but also allows them to form bonds with the glass network structure of the anti-fouling glaze layer, optimizing the interfacial bonding between alumina and the anti-fouling glaze layer. Without a pre-grinding process, feldspar, quartz, and barium carbonate tend to enter the network structure of the anti-fouling glaze layer, hindering their reaction with alumina and leading to a deterioration in interfacial bonding. Lowering the softening temperature, on the other hand, makes the alumina more rounded, which improves the stain resistance of the ceramic tile.

[0012] This invention uses alumina as the anti-slip functional component and an anti-fouling glaze layer as the substrate. By utilizing the melting temperature difference between the two, during high-temperature firing, the raw material of the low-melting-point anti-fouling glaze layer melts and flattens, while the high-melting-point alumina does not melt and protrudes from the surface of the anti-fouling glaze layer, thereby achieving the effects of anti-fouling, anti-slip, and wear resistance.

[0013] It should be noted that both the low-temperature melting block and the high-temperature melting block are commercially available melting blocks.

[0014] As a further embodiment, the alumina has an average particle size of 12~55μm.

[0015] Specifically, the surface of the anti-fouling glaze layer features raised anti-slip particles that protrude above the glaze surface, creating a certain surface roughness and improving the glaze's anti-slip properties. Theoretically, the higher the raised anti-slip particles, the greater the roughness of the glaze surface, and the better the anti-slip properties. However, this inevitably leads to a significant decrease in the proportion of the highest surface area of ​​the raised particles to the total glaze surface area. Since glaze friction always begins from the highest surface, although the anti-slip particles, mainly composed of alumina, have strong wear resistance, as the proportion of the highest surface area decreases, the area of ​​anti-slip particles that actually provide wear resistance decreases, thus reducing the glaze's wear resistance. Furthermore, higher raised particles make it difficult to remove deposited dirt, thus deteriorating the anti-fouling performance. At the same time, if the anti-slip particle size is too small, resulting in insufficient raised height, while excellent anti-fouling performance will be achieved, the anti-slip performance will obviously be poor. Therefore, considering the anti-slip, wear-resistant, and anti-fouling properties of the glaze, the particle size of the alumina is determined to be 12~55μm.

[0016] As a further embodiment, the raw material of the low-temperature frit includes boron trioxide. The addition of boron trioxide (B₂O₃) not only lowers the liquidus temperature of the glaze but also accelerates and strengthens the melting process. Simultaneously, boron trioxide does not excessively reduce viscosity at low temperatures, but it significantly reduces viscosity at high temperatures, which is beneficial for controlling the viscosity of the glaze. Furthermore, appropriate addition of boron trioxide can reduce the coefficient of thermal expansion of the glaze and improve the thermal shock resistance of the antifouling glaze layer, which is also beneficial for matching the performance of the granite body layer. More importantly, after entering the glaze system, boron trioxide competes with silicon for some oxygen, and the resulting BO bonds have high bond strength, enhancing the overall hardness characteristics of the antifouling glaze layer.

[0017] As a further embodiment, the raw materials of the granite blank layer include the following components in parts by weight: 24-26 parts of potassium sodium stone powder, 12-14 parts of potassium stone powder, 24-26 parts of medium alumina sand, 19-23 parts of gray-black mud, 14-18 parts of a stone powder, and 3-5 parts of wollastonite particles.

[0018] In addition, the present invention also provides a method for preparing a non-slip and stain-resistant granite tile. The preparation method is used to prepare the above-mentioned non-slip and stain-resistant granite tile, and the preparation method includes the following steps:

[0019] 1) According to the raw material ratio of the granite billet layer, weigh the corresponding proportion of raw materials, mix and stir evenly, ball mill to make billet slurry, add colorant to form color paste, spray to obtain billet powder;

[0020] 2) Mix and grind the raw materials for the anti-fouling glaze and the anti-slip particles separately to obtain mixture A and mixture B. Mix mixture A and mixture B together to make a glaze for later use.

[0021] 3) After the glitter particles are mixed evenly with the body powder, they are pressed into shape, dried, sprayed with glaze, calcined, and after surface treatment, granite ceramic tiles are obtained.

[0022] As a further embodiment, the raw materials of the flash particle material include the following components in parts by weight: 80-90 parts alloy metal material, 10-20 parts kaolin, 5-10 parts wollastonite powder, 0.1-0.3 parts suspension stabilizer, and 0.05-0.15 parts sodium tripolyphosphate.

[0023] Specifically, by arranging metallic glitter particles in the granite blank layer, the surface of the granite blank can be made to have a bright color and high gloss, and to have a certain glitter effect under different lighting conditions.

[0024] As a further option, the alloy metal material is TiO2 and Fe2O3, which gives the prepared granite ceramic tile a strong metallic texture.

[0025] As a further option, in step 3), the calcination temperature is 1200~1230℃ and the calcination time is 55~65min.

[0026] This invention has at least one of the following beneficial effects:

[0027] 1. In the formulation of the anti-fouling glaze, by increasing the content of calcium oxide and sodium oxide in the formulation, the transparency, refractive index, gloss and anti-fouling performance of the anti-fouling glaze are improved, and the wetting ability of the glaze on the uneven surface of the granite body is optimized.

[0028] 2. This invention uses alumina as the anti-slip functional component and an anti-fouling glaze layer as the substrate. By utilizing the melting temperature difference between the two, during high-temperature firing, the raw material of the low-melting-point anti-fouling glaze layer melts and flattens, while the high-melting-point alumina does not melt and protrudes from the surface of the anti-fouling glaze layer, thereby achieving the effects of anti-fouling, anti-slip, and wear resistance. Attached Figure Description

[0029] Figure 1 Here is a SEM image of the anti-fouling glaze layer of the granite ceramic tile in Example 1;

[0030] Figure 2 The image shows the XRD pattern of the anti-fouling glaze layer of the granite ceramic tile in Example 1.

[0031] Figure 3 A comparison chart showing the stain resistance test results of the granite ceramic tile of Example 1 and the commercially available ordinary satin glaze ceramic tile of Comparative Example 1.

[0032] Figure 4 Vickers hardness test spectra of the granite ceramic tile of Example 1 and the commercially available ordinary satin glaze ceramic tile of Comparative Example 1. Specific Implementation

[0034] The specific embodiments of the present invention will be further explained and described below.

[0035] Example 1

[0036] This embodiment provides a non-slip and stain-resistant granite ceramic tile, including a granite body layer, a stain-resistant glaze layer on the surface of the granite body layer, and non-slip particles arranged on the surface of the stain-resistant glaze layer.

[0037] The antifouling glaze layer comprises the following components by weight: 20 parts albite, 20 parts wollastonite, 6 parts calcite, 3 parts quartz, 10 parts barium carbonate, 10 parts low-temperature frit, and 20 parts high-temperature frit; preferably, the low-temperature frit comprises boron trioxide.

[0038] The raw materials for anti-slip particles include the following components by weight: 60 parts alumina, 2 parts potassium feldspar, 17 parts quartz, 2 parts sodium feldspar, and 6 parts barium carbonate.

[0039] The raw materials for the granite blank layer include the following components by weight: 25 parts potassium sodium stone powder, 13 parts potassium stone powder, 25 parts medium alumina sand, 21 parts gray-black mud, 16 parts a stone powder, and 4 parts wollastonite particles.

[0040] The above-mentioned anti-slip and stain-resistant granite ceramic tile is prepared using the following steps:

[0041] 1) According to the raw material ratio of the granite billet layer, weigh the corresponding proportion of raw materials, mix and stir evenly, ball mill to make billet slurry, add colorant to form color paste, spray to obtain billet powder;

[0042] 2) Mix and grind the raw materials for the anti-fouling glaze and the anti-slip particles separately to obtain mixture A and mixture B. Mix mixture A and mixture B together to make a glaze for later use.

[0043] 3) After the glitter particles are mixed evenly with the body powder, they are pressed into shape, dried, sprayed with glaze, and calcined at a temperature of 1215℃ for 60 minutes. After surface treatment, granite ceramic tiles are obtained. The raw materials of the glitter particles include the following components by weight: 85 parts alloy metal material, 15 parts kaolin, 8 parts wollastonite powder, 0.2 parts suspension stabilizer, and 0.1 parts sodium tripolyphosphate. Preferably, the alloy metal material is a combination of TiO2 and Fe2O3.

[0044] Example 2

[0045] This embodiment provides a non-slip and stain-resistant granite ceramic tile, including a granite body layer, a stain-resistant glaze layer on the surface of the granite body layer, and non-slip particles arranged on the surface of the stain-resistant glaze layer.

[0046] The antifouling glaze layer comprises the following components by weight: 15 parts albite, 15 parts wollastonite, 4 parts calcite, 2 parts quartz, 8 parts barium carbonate, 8 parts low-temperature frit, and 15 parts high-temperature frit; preferably, the low-temperature frit comprises boron trioxide.

[0047] The raw materials for anti-slip particles include the following components by weight: 55 parts alumina, 1 part potassium feldspar, 15 parts quartz, 1 part sodium feldspar, and 5 parts barium carbonate.

[0048] The raw materials for the granite blank layer include the following components by weight: 25 parts potassium sodium stone powder, 13 parts potassium stone powder, 25 parts medium alumina sand, 21 parts gray-black mud, 16 parts a stone powder, and 4 parts wollastonite particles.

[0049] The above-mentioned anti-slip and stain-resistant granite ceramic tile is prepared using the following steps:

[0050] 1) According to the raw material ratio of the granite billet layer, weigh the corresponding proportion of raw materials, mix and stir evenly, ball mill to make billet slurry, add colorant to form color paste, spray to obtain billet powder;

[0051] 2) Mix and grind the raw materials for the anti-fouling glaze and the anti-slip particles separately to obtain mixture A and mixture B. Mix mixture A and mixture B together to make a glaze for later use.

[0052] 3) After the glitter particles are mixed evenly with the body powder, they are pressed into shape, dried, sprayed with glaze, and calcined at a temperature of 1215℃ for 60 minutes. After surface treatment, granite ceramic tiles are obtained. The raw materials of the glitter particles include the following components by weight: 85 parts alloy metal material, 15 parts kaolin, 8 parts wollastonite powder, 0.2 parts suspension stabilizer, and 0.1 parts sodium tripolyphosphate. Preferably, the alloy metal material is a combination of TiO2 and Fe2O3.

[0053] Example 3

[0054] This embodiment provides a non-slip and stain-resistant granite ceramic tile, including a granite body layer, a stain-resistant glaze layer on the surface of the granite body layer, and non-slip particles arranged on the surface of the stain-resistant glaze layer.

[0055] The antifouling glaze layer comprises the following components by weight: 25 parts albite, 25 parts wollastonite, 8 parts calcite, 5 parts quartz, 12 parts barium carbonate, 12 parts low-temperature frit, and 25 parts high-temperature frit; preferably, the low-temperature frit comprises boron trioxide.

[0056] The raw materials for anti-slip particles include the following components in parts by weight: 65 parts alumina, 3 parts potassium feldspar, 20 parts quartz, 3 parts sodium feldspar, and 8 parts barium carbonate.

[0057] The raw materials for the granite blank layer include the following components by weight: 25 parts potassium sodium stone powder, 13 parts potassium stone powder, 25 parts medium alumina sand, 21 parts gray-black mud, 16 parts a stone powder, and 4 parts wollastonite particles.

[0058] The above-mentioned anti-slip and stain-resistant granite ceramic tile is prepared using the following steps:

[0059] 1) According to the raw material ratio of the granite billet layer, weigh the corresponding proportion of raw materials, mix and stir evenly, ball mill to make billet slurry, add colorant to form color paste, spray to obtain billet powder;

[0060] 2) Mix and grind the raw materials for the anti-fouling glaze and the anti-slip particles separately to obtain mixture A and mixture B. Mix mixture A and mixture B together to make a glaze for later use.

[0061] 3) After the glitter particles are mixed evenly with the body powder, they are pressed into shape, dried, sprayed with glaze, and calcined at a temperature of 1215℃ for 60 minutes. After surface treatment, granite ceramic tiles are obtained. The raw materials of the glitter particles include the following components by weight: 85 parts alloy metal material, 15 parts kaolin, 8 parts wollastonite powder, 0.2 parts suspension stabilizer, and 0.1 parts sodium tripolyphosphate. Preferably, the alloy metal material is a combination of TiO2 and Fe2O3.

[0062] Comparative Example 1

[0063] Commercially available ordinary satin-glazed ceramic tiles.

[0064] Examples 4-6, Comparative Example 2

[0065] Based on Example 1, alumina with different average particle sizes were set in the manner of 12μm, 27μm, 55μm and 80μm, and the resulting granite ceramic tiles were divided into Examples 4 to 6 and Comparative Example 2.

[0066] Performance testing

[0067] 1. The granite ceramic tile obtained in Example 1 was subjected to SEM testing.

[0068] Figure 1 This is a SEM image of the anti-fouling glaze layer on the granite ceramic tile of Example 1. From... Figure 1 As can be seen from the optimized formula, the surface of the anti-fouling glaze is very smooth, indicating that the glaze can be well wetted on the surface of the granite body during high-temperature firing. This provides a foundation for maintaining the decorative characteristics of the granite body and the anti-fouling performance of the anti-fouling glaze.

[0069] 2. The granite ceramic tile obtained in Example 1 was subjected to XRD testing.

[0070] Figure 2 The image shows the XRD pattern of the anti-fouling glaze layer on the granite ceramic tile of Example 1. From... Figure 2 As can be seen from the data, the glaze has a peak centered between 2θ and 30°, indicating that the crystalline dry particles are mainly amorphous.

[0071] 3. The granite ceramic tile obtained in Example 1 and the commercially available ordinary satin glaze ceramic tile of Comparative Example 1 were subjected to a stain resistance test: the stain resistance test was carried out by applying ink and letting it dry naturally for 20 minutes, then washing it with tap water and wiping the surface with a cloth, and comparing the adhesion of ink on the glaze before and after cleaning.

[0072] Figure 3The figures show a comparison of the stain resistance test results of the granite tile of Example 1 and the commercially available ordinary satin glaze tile of Comparative Example 1. In the figures, (a) and (b) are comparison images of the granite tile of Example 1 before and after the stain resistance test, respectively; (c) and (d) are comparison images of the commercially available ordinary satin glaze tile of Comparative Example 1 before and after the stain resistance test, respectively.

[0073] from Figure 3 As can be seen, the glaze surface of the granite tile in Example 1 is clean after cleaning, with almost no contaminant adhesion. However, the glaze surface of the commercially available ordinary satin-glazed tile in Comparative Example 1 still has a large amount of contaminants remaining after cleaning. This indicates that by increasing the content of calcium oxide and sodium oxide in the formula and appropriately introducing boron oxide, the transparency, refractive index, gloss, and stain resistance of the anti-fouling glaze layer are improved, and the wetting ability of the glaze on the uneven surface of the granite body is optimized. Therefore, the granite tile developed in this invention has excellent stain resistance.

[0074] 4. The granite ceramic tile obtained in Example 1 and the commercially available ordinary satin glaze ceramic tile of Comparative Example 1 were subjected to Vickers hardness tests.

[0075] Figure 4 The Vickers hardness test spectra are for the granite ceramic tile of Example 1 and the commercially available ordinary satin-glazed ceramic tile of Comparative Example 1. The Vickers hardness test spectra contain four hardness values, starting from... Figure 4 As can be seen from the above, the hardness values ​​of the anti-fouling glaze layer of the granite ceramic tile in Example 1 are all greater than those of the glaze layer of the commercially available ordinary satin glaze ceramic tile in Comparative Example 1. The higher hardness can appropriately extend the service life of the product.

[0076] 5. Different performance tests were conducted on the granite ceramic tiles of Examples 4 to 6 and Comparative Example 2. The results are shown in Table 1 below:

[0077] Table 1 Comparison of performance parameters of granite ceramic tiles with different average particle sizes of alumina.

[0078]

[0079] Table 1 compares the performance parameters of granite ceramic tiles with alumina particle sizes of 12μm, 27μm, 55μm, and 80μm. Clearly, as the alumina particle size increases, the anti-slip and wear-resistant properties of the granite ceramic tiles gradually improve, while the stain-resistant properties gradually deteriorate. However, compared to 55μm, the wear-resistant properties of granite ceramic tiles with an average particle size of 80μm do not show a sustained improvement. In summary, granite ceramic tiles with an average alumina particle size of 55μm exhibit the best overall performance (anti-slip, stain-resistant, and wear-resistant properties).

[0080] The embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.

Claims

1. A slip and stain resistant granite tile, characterized by, The granite slab includes a granite body layer, an anti-fouling glaze layer on the surface of the granite body layer, and anti-slip particles arranged on the surface of the anti-fouling glaze layer. The anti-fouling glaze layer is made of the following components in parts by weight: 15-25 parts of sodium feldspar, 15-25 parts of wollastonite, 4-8 parts of calcite, 2-5 parts of quartz, 8-12 parts of barium carbonate, 8-12 parts of low-temperature frit, and 15-25 parts of high-temperature frit. The anti-slip particles are made of the following components in parts by weight: 55-65 parts of aluminum oxide, 1-3 parts of potassium feldspar, 15-20 parts of quartz, 1-3 parts of sodium feldspar, and 5-8 parts of barium carbonate. The potassium feldspar, sodium feldspar, quartz, and barium carbonate of the anti-slip particles are mechanically ground with the aluminum oxide in advance to bond the aluminum oxide with other minerals, optimize the interface bonding between the aluminum oxide and the anti-fouling glaze layer, and appropriately lower the softening temperature of the anti-slip particles.

2. The anti-slip and anti-fouling granite tile according to claim 1, characterized in that: The average particle size of the aluminum oxide is 12-55 μm.

3. The anti-slip and anti-stain granite tile according to claim 1, characterized in that: The low-temperature frit is made of boron trioxide.

4. A method of manufacturing a non-slip and non-stain granite tile, characterized in that: The preparation method is used to prepare the anti-slip and anti-fouling granite ceramic tile according to any one of claims 1-3, and the preparation method includes the following steps: 1) According to the proportion of the raw materials of the granite body layer, the corresponding proportion of the raw materials is weighed, mixed and stirred uniformly, ball-milled into a body slurry, added with a colorant to form a colorant slurry, sprayed to form a body powder; 2) The raw materials of the anti-fouling glaze layer and the raw materials of the anti-slip particles are mixed and ground to obtain mixture A and mixture B, and then the mixture A and the mixture B are mixed to form a glaze, which is ready for use; 3) The flash particle material is mixed with the body powder, pressed and formed, dried, sprayed with the glaze, calcined, and then surface treated to obtain the granite ceramic tile.

5. The method of claim 4, wherein the granite tile is prepared by the steps of: The raw materials of the flash particle material include the following components in parts by weight: 80-90 parts of alloy metal material, 10-20 parts of kaolin, 5-10 parts of wollastonite powder, 0.1-0.3 parts of suspension stabilizer, and 0.05-0.15 parts of sodium tripolyphosphate. ​ 6. The method of claim 5, wherein the granite tile is prepared by the steps of: The alloy metal material is TiO2 and Fe2O3. ​ 7. The method of claim 4, wherein the granite tile is prepared by the steps of: In step 3), the calcination temperature is 1200-1230 °C, and the calcination time is 55-65 min. ​

Images