Pearlescent frit with layered carrier structure and ceramic tile using the same

Abstract

The present invention discloses a pearlescent frit with a layered carrier structure and a ceramic tile using the same. The pearlescent frit comprises the following raw materials, calculated by weight: 30-40 parts perlite, 10-15 parts calcined alumina, 8-15 parts potassium hexafluoroaluminate, 2-8 parts zinc oxide, 5-15 parts calcite, 5-15 parts potassium feldspar, 3-8 parts calcium fluoride, 1-5 parts zirconium oxide, 5-12 parts cerium oxide, and 5-10 parts lead carbonate. The pearlescent frit with a layered carrier structure and the ceramic tile using the same, proposed in this proposal, can effectively enhance the pearlescent effect of the frit, thereby overcoming the shortcomings of the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of building ceramic raw materials, in particular to a pearlescent frit with a layered carrier structure and a ceramic brick using the same. Background Art

[0002] With the continuous progress of society and the continuous improvement of people's living standards, people will have different ideas when choosing ceramic products. In real life, people pay more attention to the functionality and practicality of ceramic products. Based on market demand, ceramic production has also developed rapidly, and ceramic production technology has become more and more mature. The blending of glazes in the firing process of ceramics is also extremely important. Ceramic industry players have also paid attention to the development of functional and practical glazes. The same body will produce different effects due to different glazes. The different touch and visual perception of the glaze will also affect the choices of consumers.

[0003] Glaze is a layer of vitreous material covering the surface of a ceramic body. It shares similar physical and chemical properties to glass, boasting a dense texture, impermeable to water and air, and resistant to acid and alkali corrosion. It is typically made from a combination of natural minerals and certain chemical ingredients, melting at high temperatures to form a lustrous, vitreous layer. Glazes come in a variety of weights, including those with a pearlescent finish. This creates a pearlescent sheen on the surface, giving the tile a more upscale, elegant appearance and enhancing the decorative appeal of any interior space.

[0004] Pearlescent frit is a type of frit with a pearlescent effect. When a glaze containing pearlescent frit is applied to the surface of a tile and fired at high temperature, it creates a pearlescent effect on the surface of the tile. This not only meets the market demand for aesthetically pleasing tile products, but also provides new ideas and directions for technological innovation and product upgrades in the ceramic industry, avoiding homogenization of tile products and increasing their added value. However, existing pearlescent frits, due to differences in raw material selection and preparation processes, often produce tile glazes with a weak pearlescent effect, limiting their application. Summary of the Invention

[0005] The purpose of the present invention is to provide a pearlescent frit with a layered carrier structure and a ceramic tile using the same, which can effectively enhance the pearlescent effect of the frit and overcome the shortcomings of the prior art.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A pearlescent frit with a layered carrier structure comprises the following raw materials, calculated by weight: 30-40 parts of perlite, 10-15 parts of calcined alumina, 8-15 parts of potassium hexafluoroaluminate, 2-8 parts of zinc oxide, 5-15 parts of calcite, 5-15 parts of potassium feldspar, 3-8 parts of calcium fluoride, 1-5 parts of zirconium oxide, 5-12 parts of cerium oxide and 5-10 parts of lead carbonate.

[0008] Preferably, the temperature curve of the pearlescent frit with a layered carrier structure is:

[0009] It takes 1.5 to 3 hours to heat from room temperature to 500°C;

[0010] From 500℃ to 1100℃, it takes 1.5 to 2.5 hours;

[0011] From 1100℃ to 1550℃, it takes 0.2~0.4h;

[0012] 1550℃, keep warm for 0.1~0.2h;

[0013] It takes 0.05 to 0.1 hours to reduce the temperature from 1550°C to 1450°C;

[0014] 1450℃, keep warm for 0.2~0.4h.

[0015] Preferably, the temperature curve of the pearlescent frit with a layered carrier structure is:

[0016] It takes 2 hours to heat from room temperature to 500℃;

[0017] It takes 2 hours to increase the temperature from 500°C to 1100°C;

[0018] From 1100℃ to 1550℃, it takes 0.3h;

[0019] 1550℃, hold for 0.1h;

[0020] It takes 0.05h to reduce the temperature from 1550℃ to 1450℃;

[0021] 1450℃, keep warm for 0.3h.

[0022] Preferably, the particle sizes of the perlite, the potassium hexafluoroaluminate, and the cerium oxide are all sieved through a 325-mesh sieve.

[0023] Preferably, the particle size of the zirconium oxide is sieved through a 250-mesh sieve.

[0024] Preferably, the following raw materials are included, calculated by mass: 36 parts of perlite, 13 parts of calcined alumina, 10 parts of potassium hexafluoroaluminate, 4 parts of zinc oxide, 10 parts of calcite, 10 parts of potassium feldspar, 5 parts of calcium fluoride, 2 parts of zirconium oxide, 7 parts of cerium oxide and 8 parts of lead carbonate.

[0025] Preferably, calculated by mass percentage, it includes the following chemical components: SiO2 48.21%, Al2O3 16.78%, CaO 9.58%, MgO 0.02%, K2O 5.38%, ZnO 4.35%, P2O 55.1%, Na2O 0.35%, ZrO 2.21% and CeO2 7.2%.

[0026] A ceramic tile comprises a body layer and a glaze layer, wherein the glaze layer is located on top of the body layer, and the raw material of the glaze layer comprises the above-mentioned pearlescent frit with a layered carrier structure.

[0027] The technical solution provided by the present invention can have the following beneficial effects:

[0028] 1. Perlite is used as a carrier for the layered structure. Potassium, silicon, aluminum, and fluorine are introduced into the frit formula. The ratios of these four key elements in the formulation are controlled by the added amounts of the raw materials. This results in the formation of a layered mica glass body after reaction. The resulting mica glass possesses a glassy transparency, while the cerium oxide coating its surface is white. These translucency and whiteness are due to the layered structure of the carrier. When incident light enters this special carrier, it produces a strong pearlescent reflection, creating a beautiful aesthetic experience for consumers.

[0029] 2. Potassium hexafluoroaluminate in the frit raw material can lower the melting point of calcined alumina, allowing the formulation system to produce mica components at a lower calcination temperature, thereby reducing the energy consumption of frit production.

[0030] 3. The added zinc oxide and lead carbonate can serve as strong flux and nucleation agent, reducing the crystallization activation energy and crystallization peak temperature, which is beneficial to the crystallization of cerium oxide and zirconium oxide, thereby further enhancing the pearl luster of the frit.

[0031] 4. Lead oxide produced by high-temperature decomposition of lead carbonate can be used as a low-temperature fluxing material and can also react with silicon oxide in the formula system to form lead silicate compounds, thereby preventing the dissolution of a large amount of added lead while ensuring the fluxing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a SEM image of the pearlescent frit of the present invention.

[0033] Figure 2 This is a schematic diagram of the brick surface effect of Example 1 of the present invention. DETAILED DESCRIPTION

[0034] A pearlescent frit with a layered carrier structure comprises the following raw materials, calculated by weight: 30-40 parts of perlite, 10-15 parts of calcined alumina, 8-15 parts of potassium hexafluoroaluminate, 2-8 parts of zinc oxide, 5-15 parts of calcite, 5-15 parts of potassium feldspar, 3-8 parts of calcium fluoride, 1-5 parts of zirconium oxide, 5-12 parts of cerium oxide and 5-10 parts of lead carbonate.

[0035] To address the technical issue of weak pearlescent effects in existing pearlescent frits, this technical solution proposes a pearlescent frit with a layered carrier structure. This frit is constructed by encapsulating a formulated, low-refractive-index (refractive-index) layered glassy fluoroaluminosilicate (hereinafter referred to as the "mica glass") with a low optical refractive index (refractive-index) of 1.54, using a white metal oxide (cerium oxide) with a high refractive index (refractive-index 2.44). This creates a pearlescent frit with a pearlescent effect. When incident light strikes the frit surface, complex refraction, reflection, and interference phenomena occur, resulting in a strong pearlescent luster. Furthermore, because the metal oxide encapsulating the outer surface of the mica particles is ceria, and ceria crystals have a face-centered cubic structure with low interfacial energy on crystal faces parallel to the glaze surface, the frit exhibits strong anisotropy during growth, resulting in excellent specular reflection properties for visible light. Furthermore, the cubic zirconia crystals provide excellent scattering of incident light, effectively enhancing the pearlescent effect of the frit. Furthermore, the raw materials of the frit also contain zirconium oxide, which can generate cubic zirconium oxide crystals with a refractive index of 2.14, and assist the cerium oxide crystals to further enhance the pearlescent effect of the frit.

[0036] like Figure 1 The figure shows an SEM image of the pearlescent frit prepared by this scheme. The gray part in the figure is cerium oxide, the black part is mica glass, and the white particles are cubic zirconia crystals. It can be seen that the essence of the pearlescent frit is cerium oxide wrapped in mica glass, and zirconium oxide crystals are accompanied by the surface of cerium oxide.

[0037] Specifically, this technical solution uses perlite as a layered carrier. Potassium, silicon, aluminum, and fluorine are introduced into the frit formulation. The ratios of these four key elements in the formulation are controlled by the added amounts of the raw materials. This results in the pearlescent frit reacting to form a layered mica glass. Because the resulting mica glass exhibits a glassy transparency, while the cerium oxide coating its surface is white, and these translucency and whiteness are inherent to the layered carrier, incident light striking this special carrier produces a strong pearlescent reflection, creating a visually appealing experience for consumers.

[0038] Furthermore, potassium hexafluoroaluminate in the frit raw materials can lower the melting point of calcined alumina, allowing the formulation to produce mica at lower calcination temperatures, thereby reducing the energy consumption of frit production. The added zinc oxide and lead carbonate act as strong fluxing agents and nucleation agents, lowering the crystallization activation energy and peak temperature, facilitating the crystallization of cerium oxide and zirconium oxide, and further enhancing the pearlescent luster of the frit. Furthermore, the lead oxide formed by the high-temperature decomposition of lead carbonate can react with silicon oxide in the formulation to form lead silicate compounds, preventing the dissolution of the excessively added lead while ensuring fluxing performance.

[0039] To further illustrate, the temperature curve of the pearlescent frit with a layered carrier structure is:

[0040] It takes 1.5 to 3 hours to heat from room temperature to 500°C;

[0041] From 500℃ to 1100℃, it takes 1.5 to 2.5 hours;

[0042] From 1100℃ to 1550℃, it takes 0.2~0.4h;

[0043] 1550℃, keep warm for 0.1~0.2h;

[0044] It takes 0.05 to 0.1 hours to reduce the temperature from 1550°C to 1450°C;

[0045] 1450℃, keep warm for 0.2~0.4h.

[0046] In a preferred embodiment of the present technical solution, by optimizing the temperature curve of the frit during high-temperature firing, it is beneficial to ensure that the pearlescent effect of the frit is further enhanced.

[0047] Specifically, the frit needs to be kept at 1550°C for 0.1 to 0.2 hours during the high-temperature firing process. If the holding time is too long, the glass generated in the formula system will increase significantly, thereby covering the generated layered structure and easily weakening the overall pearlescent luster of the frit; if the holding time is too short, the amount of mica glass synthesized will be small, making it difficult to obtain a strong pearlescent effect.

[0048] More specifically, it takes 0.05 to 0.1 hours for the frit to cool from 1550°C to 1450°C during the high-temperature firing process. If the cooling time is too short, the mica glass will not be completely wrapped by the cerium oxide, which will easily weaken the overall pearl luster of the frit; if the cooling time is too long, the viscosity of the frit will easily decrease, which is not conducive to the cerium oxide crystals wrapping the mica glass, and the pearl luster will also deteriorate.

[0049] To further illustrate, the temperature curve of the pearlescent frit with a layered carrier structure is:

[0050] It takes 2 hours to heat from room temperature to 500℃;

[0051] It takes 2 hours to increase the temperature from 500°C to 1100°C;

[0052] From 1100℃ to 1550℃, it takes 0.3h;

[0053] 1550℃, hold for 0.1h;

[0054] It takes 0.05h to reduce the temperature from 1550℃ to 1450℃;

[0055] 1450℃, keep warm for 0.3h.

[0056] As a better embodiment of the above embodiment, this solution further optimizes the temperature curve of the frit, which is conducive to achieving the best pearlescent effect of the frit.

[0057] To further illustrate, the particle sizes of the perlite, the potassium hexafluoroaluminate, and the cerium oxide all pass through a 325-mesh sieve.

[0058] It is further explained that the particle size of the zirconium oxide is sieved through a 250-mesh sieve.

[0059] In another preferred embodiment of the present technical solution, the particle sizes of perlite, potassium hexafluoroaluminate, cerium oxide and zirconium oxide are also optimized, so that the glossiness of the pearlescent frit is uniform, thereby avoiding the phenomenon of uneven sparkle points in the pearlescent glaze using the above-mentioned pearlescent frit.

[0060] To further illustrate, the following raw materials are included, calculated by mass: 36 parts of perlite, 13 parts of calcined alumina, 10 parts of potassium hexafluoroaluminate, 4 parts of zinc oxide, 10 parts of calcite, 10 parts of potassium feldspar, 5 parts of calcium fluoride, 2 parts of zirconium oxide, 7 parts of cerium oxide and 8 parts of lead carbonate.

[0061] This proposal also provides an optimal ratio of pearlescent frit, which has a pearl-like glossiness of up to 65° and a most intense pearlescent effect.

[0062] To further illustrate, the following chemical components are included in terms of mass percentage: SiO2 48.21%, Al2O3 16.78%, CaO 9.58%, MgO 0.02%, K2O 5.38%, ZnO 4.35%, P2O 55.1%, Na2O 0.35%, ZrO 2.21% and CeO 27.2%.

[0063] In the formula system under the above optimal ratio, the SiO2 content is as high as 48%, which is a high-silicon frit. Using it as the raw material of frit glaze, or adding it as one of the raw materials to the surface glaze, is also beneficial to improving the hardness and wear resistance of the glaze layer.

[0064] A ceramic tile comprises a body layer and a glaze layer, wherein the glaze layer is located on top of the body layer, and the raw material of the glaze layer comprises the above-mentioned pearlescent frit with a layered carrier structure.

[0065] The technical solution of the present invention is further illustrated below through specific implementation methods.

[0066] Example 1

[0067] A ceramic tile comprises a body layer, a base glaze layer and a frit glaze layer arranged in sequence from bottom to top, and the schematic diagram of the tile surface effect is as shown in FIG. Figure 2 shown.

[0068] The green body layer is prepared from conventional green body raw materials in the ceramic field, and the chemical composition of the green body layer includes SiO267.85%, Al2O317.23%, Fe2O31.42%, TiO20.23%, CaO 1.18%, MgO 1.65%, K2O1.85%, Na2O 2.05% and ignition loss 4.3% in terms of mass percentage.

[0069] The bottom glaze layer is made by firing the conventional bottom glaze in the ceramic field, and the chemical composition of the bottom glaze layer includes Al2O316.73%, SiO250.48%, CaO 8.04%, MgO 5.79%, BaO 7.01%, ZnO 4.85%, K2O 3.9% and Na2O 3.03% in terms of mass percentage.

[0070] The frit glaze layer is formed by applying pearlescent frit to the surface of the base glaze and then firing. The pearlescent frit includes the following raw materials, calculated by weight: 36 parts of perlite passed through a 325-mesh sieve, 13 parts of calcined alumina, 10 parts of potassium hexafluoroaluminate passed through a 325-mesh sieve, 4 parts of zinc oxide, 10 parts of calcite, 10 parts of potassium feldspar, 5 parts of calcium fluoride, 2 parts of zirconium oxide passed through a 250-mesh sieve, 7 parts of cerium oxide passed through a 325-mesh sieve, and 8 parts of lead carbonate. Furthermore, the temperature curve of the pearlescent frit is:

[0071] It takes 2 hours to heat from room temperature to 500℃;

[0072] It takes 2 hours to increase the temperature from 500°C to 1100°C;

[0073] From 1100℃ to 1550℃, it takes 0.3h;

[0074] 1550℃, hold for 0.1h;

[0075] It takes 0.05h to reduce the temperature from 1550℃ to 1450℃;

[0076] 1450℃, keep warm for 0.3h.

[0077] Example 2

[0078] A ceramic tile comprises a body layer, a ground glaze layer and a frit glaze layer which are sequentially arranged from bottom to top.

[0079] The green body layer is prepared from conventional green body raw materials in the ceramic field, and the chemical composition of the green body layer includes SiO267.85%, Al2O317.23%, Fe2O31.42%, TiO20.23%, CaO 1.18%, MgO 1.65%, K2O1.85%, Na2O 2.05% and ignition loss 4.3% in terms of mass percentage.

[0080] The bottom glaze layer is made by firing the conventional bottom glaze in the ceramic field, and the chemical composition of the bottom glaze layer includes Al2O316.73%, SiO250.48%, CaO 8.04%, MgO 5.79%, BaO 7.01%, ZnO 4.85%, K2O 3.9% and Na2O 3.03% in terms of mass percentage.

[0081] The frit glaze layer is formed by applying pearlescent frit to the surface of the base glaze and then firing. The pearlescent frit includes the following raw materials, calculated by weight: 30 parts of perlite passed through a 325-mesh sieve, 10 parts of calcined alumina, 8 parts of potassium hexafluoroaluminate passed through a 325-mesh sieve, 2 parts of zinc oxide, 5 parts of calcite, 5 parts of potassium feldspar, 3 parts of calcium fluoride, 1 part of zirconium oxide passed through a 250-mesh sieve, 5 parts of cerium oxide passed through a 325-mesh sieve, and 5 parts of lead carbonate. Furthermore, the temperature curve of the pearlescent frit is:

[0082] It takes 1.5 hours to heat from room temperature to 500℃;

[0083] It takes 2.5 hours to increase the temperature from 500°C to 1100°C;

[0084] From 1100℃ to 1550℃, it takes 0.4h;

[0085] 1550℃, hold for 0.1h;

[0086] It takes 0.1h to reduce the temperature from 1550℃ to 1450℃;

[0087] 1450℃, keep warm for 0.4h.

[0088] Example 3

[0089] A ceramic tile comprises a body layer, a ground glaze layer and a frit glaze layer which are sequentially arranged from bottom to top.

[0090] The green body layer is prepared from conventional green body raw materials in the ceramic field, and the chemical composition of the green body layer includes SiO267.85%, Al2O317.23%, Fe2O31.42%, TiO20.23%, CaO 1.18%, MgO 1.65%, K2O1.85%, Na2O 2.05% and ignition loss 4.3% in terms of mass percentage.

[0091] The bottom glaze layer is made by firing the conventional bottom glaze in the ceramic field, and the chemical composition of the bottom glaze layer includes Al2O316.73%, SiO250.48%, CaO 8.04%, MgO 5.79%, BaO 7.01%, ZnO 4.85%, K2O 3.9% and Na2O 3.03% in terms of mass percentage.

[0092] The frit glaze layer is formed by applying pearlescent frit to the surface of the base glaze and then firing. The pearlescent frit includes the following raw materials, calculated by weight: 40 parts of perlite passed through a 325-mesh sieve, 15 parts of calcined alumina, 15 parts of potassium hexafluoroaluminate passed through a 325-mesh sieve, 8 parts of zinc oxide, 15 parts of calcite, 15 parts of potassium feldspar, 8 parts of calcium fluoride, 5 parts of zirconium oxide passed through a 250-mesh sieve, 12 parts of cerium oxide passed through a 325-mesh sieve, and 10 parts of lead carbonate. Furthermore, the temperature curve of the pearlescent frit is:

[0093] It takes 3 hours to heat from room temperature to 500℃;

[0094] From 500°C to 1100°C, it takes 1.5 hours;

[0095] From 1100℃ to 1550℃, it takes 0.2h;

[0096] 1550℃, keep warm for 0.2h;

[0097] It takes 0.05h to reduce the temperature from 1550℃ to 1450℃;

[0098] 1450℃, keep warm for 0.2h.

[0099] Comparative Example

[0100] A ceramic tile comprises a body layer, a ground glaze layer and a frit glaze layer which are sequentially arranged from bottom to top.

[0101] The green body layer is prepared from conventional green body raw materials in the ceramic field, and the chemical composition of the green body layer includes SiO267.85%, Al2O317.23%, Fe2O31.42%, TiO20.23%, CaO 1.18%, MgO 1.65%, K2O1.85%, Na2O 2.05% and ignition loss 4.3% in terms of mass percentage.

[0102] The bottom glaze layer is made by firing the conventional bottom glaze in the ceramic field, and the chemical composition of the bottom glaze layer includes Al2O316.73%, SiO250.48%, CaO 8.04%, MgO 5.79%, BaO 7.01%, ZnO 4.85%, K2O 3.9% and Na2O 3.03% in terms of mass percentage.

[0103] The frit glaze layer is formed by applying pearlescent frit to the surface of the base glaze and then firing. The pearlescent frit includes the following raw materials, calculated by weight: 26 parts of perlite passed through a 325-mesh sieve, 19 parts of calcined alumina, 7 parts of potassium hexafluoroaluminate passed through a 325-mesh sieve, 4 parts of zinc oxide, 10 parts of calcite, 23 parts of potassium feldspar, 5 parts of calcium fluoride, 5 parts of zirconium oxide passed through a 250-mesh sieve, 2 parts of cerium oxide passed through a 325-mesh sieve, and 8 parts of lead carbonate. Furthermore, the temperature curve of the pearlescent frit is:

[0104] It takes 3 hours to heat from room temperature to 500℃;

[0105] From 500°C to 1100°C, it takes 1.5 hours;

[0106] From 1100℃ to 1550℃, it takes 0.2h;

[0107] 1550℃, keep warm for 0.2h;

[0108] It takes 0.05h to reduce the temperature from 1550℃ to 1450℃;

[0109] 1450℃, keep warm for 0.2h.

[0110] The ceramic tiles prepared in Examples 1-3 and the comparative example were subjected to conventional gloss tests in the field of architectural ceramics. The results are shown in Table 1 below:

[0111]

[0112] From the performance test results in Table 1, it can be seen that the frit glaze layer prepared by using the pearlescent frit formula of this scheme has a pearl-like gloss effect, and the glossiness can reach up to 65°, with a strong pearlescent effect.

[0113] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and are not to be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will readily conceive of other specific embodiments of the present invention without inventive effort, and such embodiments will fall within the scope of protection of the present invention.

Claims

1. A pearlescent frit with a layered carrier structure, characterized in that: The raw materials are calculated by weight: 30-40 parts of perlite, 10-15 parts of calcined alumina, 8-15 parts of potassium hexafluoroaluminate, 2-8 parts of zinc oxide, 5-15 parts of calcite, 5-15 parts of potassium feldspar, 3-8 parts of calcium fluoride, 1-5 parts of zirconium oxide, 5-12 parts of cerium oxide and 5-10 parts of lead carbonate; The pearlescent frit has a mica glass body with a layered structure, and the surface of the mica glass body is coated with cerium oxide.

2. The pearlescent frit with a layered carrier structure according to claim 1, characterized in that: The temperature curve of the pearlescent frit with a layered carrier structure is: It takes 1.5 to 3 hours to heat from room temperature to 500°C; From 500℃ to 1100℃, it takes 1.5 to 2.5 hours; From 1100℃ to 1550℃, it takes 0.2~0.4h; 1550℃, keep warm for 0.1~0.2h; It takes 0.05 to 0.1 hours to reduce the temperature from 1550°C to 1450°C; 1450℃, keep warm for 0.2~0.4h.

3. The pearlescent frit with a layered carrier structure according to claim 2, characterized in that: The temperature curve of the pearlescent frit with a layered carrier structure is: It takes 2 hours to heat from room temperature to 500℃; It takes 2 hours to increase the temperature from 500°C to 1100°C; From 1100℃ to 1550℃, it takes 0.3h; 1550℃, hold for 0.1h; It takes 0.05h to reduce the temperature from 1550℃ to 1450℃; 1450℃, keep warm for 0.3h.

4. The pearlescent frit with a layered carrier structure according to claim 1, characterized in that: The particle sizes of the perlite, the potassium hexafluoroaluminate, and the cerium oxide all pass through a 325-mesh sieve.

5. The pearlescent frit with a layered carrier structure according to claim 1, characterized in that: The particle size of the zirconium oxide is sieved through a 250-mesh sieve.

6. The pearlescent frit with a layered carrier structure according to claim 1, characterized in that: Calculated by mass, the raw materials include: 36 parts of perlite, 13 parts of calcined alumina, 10 parts of potassium hexafluoroaluminate, 4 parts of zinc oxide, 10 parts of calcite, 10 parts of potassium feldspar, 5 parts of calcium fluoride, 2 parts of zirconium oxide, 7 parts of cerium oxide and 8 parts of lead carbonate.

7. The pearlescent frit with a layered carrier structure according to claim 6, characterized in that: Calculated in terms of mass percentage, it includes the following chemical components: SiO2 48.21%, Al2O3 16.78%, CaO 9.58%, MgO 0.02%, K2O5.38%, ZnO 4.35%, P2O5 5.1%, Na2O 0.35%, ZrO2 2.21% and CeO2 7.2%.

8. A ceramic tile comprising a body layer and a glaze layer, wherein the glaze layer is located on top of the body layer, characterized in that: The raw material of the glaze layer includes the pearlescent frit with a layered carrier structure according to any one of claims 1 to 7.

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