Metallic luster glaze tile and preparation method thereof

Abstract

The application discloses a kind of metal flash glaze tiles and preparation method thereof, comprising the following steps: A, preparation body layer;B, bottom glaze is applied to the surface of the body layer, to obtain bottom glaze layer;According to mass fraction, the bottom glaze includes the following raw materials: kaolin 6~10 parts, alumina 2~8 parts, nepheline 35~42 parts, albite 2~10 parts, calcium strontium barium frit 18~25 parts and zirconium silicate 18~22 parts;C, metal flash glaze is applied to the surface of the bottom glaze layer, to obtain metal flash glaze layer;D, after drying, into kiln firing, to obtain metal flash glaze tile.The scheme proposes a kind of metal flash glaze tile and preparation method thereof, the formula structure of bottom glaze layer and metal flash glaze layer in glaze tile is matched with each other, it is favorable to present strong metal flash effect on the surface of ceramic tile, can effectively solve the technical problems, such as the metal feeling of flash point is not strong, the uneven distribution and not delicate of flash point of existing flash glaze.

Description

Technical Field

[0001] This invention relates to the field of building ceramics technology, and in particular to a metallic glazed tile and its preparation method. Background Technology

[0002] With the continuous progress of society and the continuous improvement of people's living standards, people 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 formulation of glazes in the firing process of ceramics is also extremely important. Ceramic industry players have also focused on the development of functional and practical glazes. The same body will produce different effects due to different glazes. The different tactile feel and visual appearance of the glaze will also affect the choice of consumers.

[0003] Glaze is a glassy layer applied to the surface of a ceramic body. It shares similar physicochemical properties with glass, is dense, impermeable to water and air, and resistant to acid and alkali corrosion. It is typically made from a combination of natural mineral raw materials and certain chemical raw materials, melted at high temperatures to form a glossy vitreous layer. Glazes come in various weights, and those with a shimmering effect are called glitter glazes. These glazes reflect incident light like a metallic mirror. When observing a finished glitter glaze, a metallic reflection can be seen at certain angles of light incidence. This metallic reflection differs from that of metallic glazes and possesses specular reflective properties.

[0004] Due to differences in raw material selection and preparation processes, existing glitter glazes often result in technical problems in the finished ceramic tile glazes, such as weak metallic texture of the glitter points, uneven distribution of glitter points, and a lack of fineness, which limits their application.

[0005] Furthermore, to control the production cost of ceramic tiles, the whiteness of the body layer in existing glazed tiles is generally low. Simultaneously, to prevent the low whiteness of the body layer from affecting the decorative function of the glaze, a base glaze layer is usually added between the body layer and the decorative glaze layer to cover the body layer. In existing technology, the conventional base glaze formulation system is a potassium-sodium system or a calcium-magnesium system. These formulation systems are generally incompatible with the formulation system of glitter glazes, which is detrimental to the presentation of the glitter effect. In other words, while existing base glazes can provide some coverage for the low whiteness of the body layer, their contribution to the presentation of the glitter effect of glitter glazes is very limited. Summary of the Invention

[0006] The purpose of this invention is to propose a metallic glitter glazed tile and its preparation method. The formulation structure of the base glaze layer and the metallic glitter glaze layer in the glazed tile is matched with each other, which is conducive to presenting a strong metallic glitter effect on the surface of the tile. It can effectively solve the technical problems of existing glitter glazes, such as weak metallic texture of the glitter points, uneven distribution of glitter points and lack of fineness.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A method for preparing a metallic glazed tile includes the following steps:

[0009] A. Prepare the blank layer;

[0010] B. Apply the base glaze to the surface of the body layer to obtain the base glaze layer;

[0011] According to the mass fractions, the base glaze comprises the following raw materials: 6-10 parts kaolin, 2-8 parts alumina, 35-42 parts nepheline, 2-10 parts albite, 18-25 parts calcium strontium barium frit and 18-22 parts zirconium silicate;

[0012] According to mass percentage, the calcium strontium barium frit comprises the following chemical composition: SiO2 40-45%, Al2O3 19-25%, Fe2O3 0.01-0.1%, TiO2 0.01-0.1%, CaO 6-8%, MgO 1-3%, K2O 0.5-1.5%, Na2O 0.01-0.1%, ZnO 2-4%, BaO 15-22%, and SrO 5-7%;

[0013] C. Apply a metallic glaze to the surface of the base glaze layer to obtain a metallic glaze layer;

[0014] According to the mass fractions, the metallic glaze comprises the following raw materials: 4-8 parts kaolin, 1-5 parts cerium oxide, 2-5 parts zinc oxide, and 85-95 parts metallic frit;

[0015] According to the mass fractions, the metallic flash frit comprises the following raw materials: 12-20 parts kaolin, 2-5 parts calcined alumina, 8-15 parts wollastonite, 4-8 parts zinc oxide, 2-8 parts calcined talc, 20-30 parts potassium feldspar, 10-20 parts sodium feldspar, 8-15 parts zircon sand, 3-6 parts cerium oxide, 3-8 parts red lead, and 1-5 parts barium carbonate;

[0016] D. After drying, the bricks are fired in a kiln to obtain metallic glazed tiles.

[0017] Preferably, the calcium strontium barium frit comprises the following raw materials in parts by weight: 25 parts kaolin, 8 parts calcined alumina, 21 parts quartz, 4 parts calcined talc, 20 parts barium carbonate, 8 parts strontium carbonate, 12 parts calcite, and 2 parts zinc oxide.

[0018] Preferably, the firing curve of the calcium strontium barium frit is as follows:

[0019] It takes 2 hours to heat the temperature from room temperature to 500°C.

[0020] The temperature was raised from 500℃ to 1100℃ in 1 hour.

[0021] The temperature was raised from 1100℃ to 1530℃ in 1 hour.

[0022] Keep warm at 1530℃ for 0.5 hours.

[0023] Preferably, the base glaze comprises the following raw materials in parts by weight: 8 parts kaolin, 4 parts alumina, 39 parts nepheline, 6 parts albite, 22 parts calcium strontium barium frit, and 20 parts zirconium silicate.

[0024] Preferably, the zircon sand contains 60-66% zircon oxide by mass percentage.

[0025] Preferably, the firing curve of the metallic flash melt is as follows:

[0026] It takes 2 hours to heat the temperature from room temperature to 500°C.

[0027] The temperature was raised from 500℃ to 1100℃ in 1 hour.

[0028] The temperature was raised from 1100℃ to 1500℃ in 1 hour.

[0029] Keep warm at 1500℃ for 1 hour.

[0030] Preferably, the metallic flashing frit comprises the following raw materials in parts by weight: 15 parts kaolin, 2.5 parts calcined alumina, 10 parts wollastonite, 6 parts zinc oxide, 5 parts calcined talc, 25 parts potassium feldspar, 15 parts sodium feldspar, 10.5 parts zircon sand, 4 parts cerium oxide, 5 parts red lead, and 2 parts barium carbonate.

[0031] According to the mass fractions, the metallic glaze comprises the following raw materials: 5 parts kaolin, 2 parts cerium oxide, 3 parts zinc oxide, and 90 parts metallic frit.

[0032] Preferably, in step C, the amount of metallic glitter glaze residue passing through a 325-mesh sieve is 0.2-0.4% by mass percentage.

[0033] Preferably, it further includes step E, which is located between step A and step B;

[0034] A. Prepare the blank layer;

[0035] E. Using mold ink, inkjet printing is performed on the surface of the blank layer according to a preset pattern to obtain a mold texture layer;

[0036] B. Apply a base glaze to the surface of the mold texture layer to obtain a base glaze layer; wherein, by mass percentage, the specific gravity of the base glaze is 1.55–1.6 g / cm³. 3 .

[0037] A metallic glazed tile is prepared using the above-described method for preparing metallic glazed tiles.

[0038] The technical solutions provided by the embodiments of the present invention may include the following beneficial effects:

[0039] 1. A metallic flash frit is proposed, which is essentially a glassy melt containing cerium oxide and zirconium oxide. It is further compounded with kaolin, cerium oxide, zinc oxide and metallic flash frit. During the firing of the glaze, cerium ions in the frit precipitate and form cerium oxide crystals with a refractive index of 2.44, zirconium ions precipitate and form cubic zirconium oxide crystals with a refractive index of 2.14, and at the same time, the glassy phase in the frit forms a glassy phase with a refractive index of 1.54. Thus, crystals with three different refractive indices are generated in the glaze layer, which can effectively form a strong metallic flash effect on the glaze surface.

[0040] 2. Adding cerium oxide to the metallic glaze formula allows it to further combine with the frit to form a cerium-zirconium alloy, achieving a "supersaturated state" for the cerium oxide in the glaze. This promotes the formation of a large number of cerium oxide crystals in the glaze system, enhancing the metallic reflective effect of the glaze layer. Adding zinc oxide to the metallic glaze formula serves two purposes: firstly, it acts as a nucleation agent, lowering the crystallization activation energy and crystallization peak temperature, which is beneficial for the crystallization of cerium oxide and zirconium oxide, further enhancing the metallic texture of the glaze surface; secondly, it improves the anti-fouling performance of the glaze layer.

[0041] 3. An additional base glaze layer matching the metallic glaze layer is added between the body layer and the metallic glaze layer. By adjusting the formula system, the separation of the glass phase and crystalline phase formed in the metallic glaze layer can be well promoted, so that materials with different refractive indices will refract and interfere under light conditions, thus presenting a stronger metallic glaze effect. Attached Figure Description

[0042] Figure 1 This is a glaze effect diagram of the metallic glitter glazed tile prepared according to Embodiment 2 of the present invention.

[0043] Figure 2 This is a glaze effect diagram of the glittery glazed tile prepared according to Comparative Example 1 of the present invention. Detailed Implementation

[0044] A method for preparing a metallic glazed tile includes the following steps:

[0045] A. Prepare the blank layer;

[0046] B. Apply the base glaze to the surface of the body layer to obtain the base glaze layer;

[0047] According to the mass fractions, the base glaze comprises the following raw materials: 6-10 parts kaolin, 2-8 parts alumina, 35-42 parts nepheline, 2-10 parts albite, 18-25 parts calcium strontium barium frit and 18-22 parts zirconium silicate;

[0048] According to mass percentage, the calcium strontium barium frit comprises the following chemical composition: SiO2 40-45%, Al2O3 19-25%, Fe2O3 0.01-0.1%, TiO2 0.01-0.1%, CaO 6-8%, MgO 1-3%, K2O 0.5-1.5%, Na2O 0.01-0.1%, ZnO 2-4%, BaO 15-22%, and SrO 5-7%;

[0049] C. Apply a metallic glaze to the surface of the base glaze layer to obtain a metallic glaze layer;

[0050] According to the mass fractions, the metallic glaze comprises the following raw materials: 4-8 parts kaolin, 1-5 parts cerium oxide, 2-5 parts zinc oxide, and 85-95 parts metallic frit;

[0051] According to the mass fractions, the metallic flash frit comprises the following raw materials: 12-20 parts kaolin, 2-5 parts calcined alumina, 8-15 parts wollastonite, 4-8 parts zinc oxide, 2-8 parts calcined talc, 20-30 parts potassium feldspar, 10-20 parts sodium feldspar, 8-15 parts zircon sand, 3-6 parts cerium oxide, 3-8 parts red lead, and 1-5 parts barium carbonate;

[0052] D. After drying, the bricks are fired in a kiln to obtain metallic glazed tiles.

[0053] Firstly, to enhance the metallic texture of the metallic glaze, this solution proposes a metallic glitter frit, which is essentially a glassy melt containing cerium oxide and zirconium oxide. This frit is then compounded with kaolin, cerium oxide, zinc oxide, and the metallic glitter frit. During firing, cerium ions in the frit precipitate to form cerium oxide crystals with a refractive index of 2.44, zirconium ions precipitate to form cubic zirconium oxide crystals with a refractive index of 2.14, and the glassy phase in the frit forms a glassy phase with a refractive index of 1.54. This results in the formation of crystals with three different refractive indices in the glaze layer. Because cerium oxide crystals have a face-centered cubic structure, their crystal planes parallel to the glaze surface have low interfacial energy, exhibiting strong anisotropy during growth and excellent specular reflection characteristics for visible light, thus creating a strong specular metallic reflection. Cubic zirconium oxide crystals provide excellent scattering of incident light. When these two crystals are combined with the glassy phase, they effectively create a strong metallic glitter effect on the glaze surface.

[0054] It should also be noted that, in addition to the introduction of zircon sand (the main source of zirconium oxide) and cerium oxide in the frit formulation, a small amount of lead oxide is also introduced into the formulation system through the addition of red lead. It has the characteristics of fluxing and helping to develop color, which helps to improve the glaze quality.

[0055] To further enhance the metallic texture of the metallic glaze, this solution also adds cerium oxide, zinc oxide, and metallic frit to the glaze formula.

[0056] The added cerium oxide can further combine with the frit to form a cerium-zirconium alloy, making the cerium oxide in the glaze reach a "supersaturated state," thereby promoting the large-scale generation of cerium oxide crystals in the glaze system and enhancing the metallic reflective effect of the glaze layer. In addition, the metallic frit becomes a glassy frit material after high-temperature firing, with low viscosity. When it is added to the glaze formula, it forms a significant viscosity difference with the metallic glaze, and the viscosity difference between the two is highly matched, which helps the precipitation of various crystals in the glaze and further improves the metallic texture effect. Moreover, the increase in the cerium oxide content in the glaze system is also more conducive to increasing the high-temperature viscosity of the glaze layer, which further facilitates the precipitation of various crystals and can also effectively improve the hardness of the glaze layer.

[0057] The added zinc oxide can act as a crystal nucleation agent, reducing the crystallization activation energy and crystallization peak temperature, which is conducive to the crystallization of cerium oxide and zirconium oxide, thereby further enhancing the metallic texture of the glaze surface. On the other hand, it can also improve the anti-fouling performance of the glaze.

[0058] It should also be noted that the extremely high content of metallic frit in the glaze formula not only ensures that the glaze layer has a strong metallic texture, but also helps to ensure that the metallic texture presented in the glaze layer is evenly distributed.

[0059] Secondly, in order to make the shimmering effect of the metallic glaze best present on the surface of the tile, this solution also adds a base glaze layer that matches the metallic glaze layer between the body layer and the metallic glaze layer. By adjusting the base glaze formula system, the separation of the glass phase and crystalline phase formed in the metallic glaze layer can be well promoted, so that materials with different refractive indices will refract and interfere under light conditions, thus presenting a stronger metallic shimmering effect.

[0060] Specifically, this scheme introduces frit with high CaO and BaO content into the raw material formula of the base glaze. This facilitates the precipitation of a glaze layer mainly composed of anorthite and barium feldspar microcrystals during firing, thereby effectively promoting the separation of the glass phase and crystals in the metallic glaze layer covering it, thus enhancing the metallic texture of the metallic glaze. Furthermore, it increases the initial melting point of the base glaze, thereby increasing the high-temperature viscosity of the glaze layer and providing a foundation for the base glaze to serve as the mold glaze layer for digital molded ceramic tiles. More specifically, the frit formula system also contains a large amount of SrO. Due to the large atomic radius of strontium oxide, it can further increase the high-temperature viscosity of the glaze and promote the precipitation of divalent ion crystals (i.e., anorthite and barium feldspar) in the glaze layer, thus ensuring the auxiliary role of the base glaze layer in presenting the shimmering effect of the metallic glaze layer.

[0061] In the base glaze formulation, in addition to introducing frit with a specific formula structure, a large amount of zirconium silicate is added. The large amount of zirconium silicate allows the glaze layer to generate zirconium oxide crystals after firing, thereby improving the whiteness of the base glaze layer. This helps to highlight the shimmering effect of the metallic glaze layer while also covering the body layer. Furthermore, it can increase the high-temperature viscosity of the glaze layer to a certain extent. When used as a mold texture layer, it can greatly preserve the pre-designed texture morphology, providing rich decorative properties for glazed tiles. Further, this solution also specifically adds nepheline to the base glaze formulation. Compared to conventional potassium-sodium feldspar, nepheline has a smaller coefficient of thermal expansion. The introduction of a large amount of nepheline can adjust the coefficient of thermal expansion of the glaze layer, thereby improving its smoothness.

[0062] To further explain, the calcium strontium barium frit, by mass, comprises the following raw materials: 25 parts kaolin, 8 parts calcined alumina, 21 parts quartz, 4 parts calcined talc, 20 parts barium carbonate, 8 parts strontium carbonate, 12 parts calcite, and 2 parts zinc oxide.

[0063] As a preferred option of this scheme, calcium strontium barium frit can be prepared using the raw materials in the above proportions. The materials are readily available and the production cost is low.

[0064] To further clarify, the firing curve of the calcium strontium barium frit is as follows:

[0065] It takes 2 hours to heat the temperature from room temperature to 500°C.

[0066] The temperature was raised from 500℃ to 1100℃ in 1 hour.

[0067] The temperature was raised from 1100℃ to 1530℃ in 1 hour.

[0068] Keep warm at 1530℃ for 0.5 hours.

[0069] To further explain, the base glaze comprises the following raw materials in parts by weight: 8 parts kaolin, 4 parts alumina, 39 parts nepheline, 6 parts sodium feldspar, 22 parts calcium strontium barium frit, and 20 parts zirconium silicate.

[0070] To further clarify, the zircon sand contains 60-66% zircon oxide by mass percentage.

[0071] Specifically, this scheme prefers zircon sand with a zircon content of 60-66% as the raw material for the metallic flash frit, which is more conducive to promoting the formation of zircon crystals in the glaze layer.

[0072] To further explain, the firing curve of the metal flash melt is as follows:

[0073] It takes 2 hours to heat the temperature from room temperature to 500°C.

[0074] The temperature was raised from 500℃ to 1100℃ in 1 hour.

[0075] The temperature was raised from 1100℃ to 1500℃ in 1 hour.

[0076] Keep warm at 1500℃ for 1 hour.

[0077] To further explain, according to the mass fractions, the metallic flashing frit comprises the following raw materials: 15 parts kaolin, 2.5 parts calcined alumina, 10 parts wollastonite, 6 parts zinc oxide, 5 parts calcined talc, 25 parts potassium feldspar, 15 parts sodium feldspar, 10.5 parts zircon sand, 4 parts cerium oxide, 5 parts red lead, and 2 parts barium carbonate.

[0078] According to the mass fractions, the metallic glaze comprises the following raw materials: 5 parts kaolin, 2 parts cerium oxide, 3 parts zinc oxide, and 90 parts metallic frit.

[0079] As a preferred embodiment of the above, this solution also provides an optimal raw material ratio for the metallic flash frit and its glaze, which is beneficial to produce a strong metallic texture on the surface of the glaze layer.

[0080] To further explain, in step C, the amount of metallic glitter glaze residue passing through a 325-mesh sieve is 0.2% to 0.4% by mass percentage.

[0081] In similar ceramic tile products, the residue of conventional glaze after passing through a 325-mesh sieve is generally 0.5-0.6%. However, the residue of the metallic glaze in this solution is lower, which helps to make the glaze have a fine uniformity, reduce the roughness of the glaze surface caused by uneven particles, and also enhance the metallic texture of the glaze to a certain extent.

[0082] To elaborate further, it also includes step E, which is located between steps A and B;

[0083] A. Prepare the blank layer;

[0084] E. Using mold ink, inkjet printing is performed on the surface of the blank layer according to a preset pattern to obtain a mold texture layer;

[0085] B. Apply a base glaze to the surface of the mold texture layer to obtain a base glaze layer; wherein, by mass percentage, the specific gravity of the base glaze is 1.55–1.6 g / cm³. 3 .

[0086] Due to the design of the base glaze formula in this solution, it has a high high-temperature viscosity, and therefore it can be used in the mold texture layer of existing digital molded ceramic tiles.

[0087] It should be noted that in the existing technology, digital molded ceramic tiles with raised textures generally use a combination of mold ink and glaze to create the mold effect. The mechanism for creating the mold texture is that the mold ink is oil-based, while the glaze is water-based. When the oil-based ink comes into contact with the water-based glaze, tension is generated. The ink with the textured pattern will physically push away the water-based glaze that is subsequently sprayed, thus forming the raised mold texture.

[0088] Preferably, the specific gravity of the base glaze is 1.57 g / cm³. 3 .

[0089] A metallic glazed tile is prepared using the above-described method for preparing metallic glazed tiles.

[0090] Specifically, the metallic glazed tiles prepared by the method described in this scheme, in addition to having a strong shimmering effect and metallic texture, also have good hardness and stain resistance, thus making the metallic glazed tiles both decorative and practical, and more conducive to meeting the needs of consumers.

[0091] The technical solution of the present invention will be further illustrated below through specific embodiments.

[0092] Example 1

[0093] A. Preparation of the green body layer; 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 by mass percentage includes SiO2 67.85%, Al2O3 17.23%, Fe2O3 1.42%, TiO2 0.23%, CaO 1.18%, MgO 1.65%, K2O 1.85%, Na2O 2.05%, and loss on ignition 4.3%.

[0094] B. Apply the base glaze to the surface of the body layer to obtain the base glaze layer;

[0095] According to the mass percentage, the base glaze comprises the following raw materials: 6 parts kaolin, 2 parts alumina, 35 parts nepheline, 2 parts albite, 18 parts calcium strontium barium frit, and 18 parts zirconium silicate; wherein, according to the mass percentage, the calcium strontium barium frit comprises the following chemical composition: SiO2 40%, Al2O3 19%, Fe2O3 0.1%, TiO2 0.1%, CaO 6%, MgO 2%, K2O 1.5%, Na2O 0.1%, ZnO 4%, BaO 22%, and SrO 5%;

[0096] C. Apply a metallic glaze to the surface of the base glaze layer to obtain a metallic glaze layer;

[0097] The metallic glaze has a residue of 0.2–0.4 wt% when sieved through a 325-mesh sieve, and a specific gravity of 1.3 g / cm³. 3 According to the mass fraction, the metallic glaze comprises 4 parts kaolin, 1 part cerium oxide, 2 parts zinc oxide, and 85 parts metallic frit; wherein the metallic frit comprises the following raw materials: 20 parts kaolin, 5 parts calcined alumina, 15 parts wollastonite, 8 parts zinc oxide, 8 parts calcined talc, 30 parts potassium feldspar, 20 parts sodium feldspar, 15 parts zircon sand with a zircon content of 64.12%, 6 parts cerium oxide, 8 parts red lead, and 5 parts barium carbonate;

[0098] D. After drying, the bricks are fired in a kiln to obtain metallic glazed tiles.

[0099] Example 2

[0100] A. Preparation of the green body layer; 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 by mass percentage includes SiO2 67.85%, Al2O3 17.23%, Fe2O3 1.42%, TiO2 0.23%, CaO 1.18%, MgO 1.65%, K2O 1.85%, Na2O 2.05%, and loss on ignition 4.3%.

[0101] B. Apply the base glaze to the surface of the body layer to obtain the base glaze layer;

[0102] According to the mass percentage, the base glaze comprises the following raw materials: 8 parts kaolin, 4 parts alumina, 39 parts nepheline, 6 parts albite, 22 parts calcium strontium barium frit, and 20 parts zirconium silicate; wherein, according to the mass percentage, the calcium strontium barium frit comprises the following chemical composition: SiO2 42%, Al2O3 21%, Fe2O3 0.1%, TiO2 0.1%, CaO 7%, MgO 1%, K2O 0.5%, Na2O 0.01%, ZnO 2%, BaO 20%, and SrO 6%;

[0103] C. Apply a metallic glaze to the surface of the base glaze layer to obtain a metallic glaze layer;

[0104] The metallic glaze has a residue of 0.2–0.4 wt% when sieved through a 325-mesh sieve, and a specific gravity of 1.3 g / cm³. 3 According to the mass fraction, the metallic glaze comprises 5 parts kaolin, 2 parts cerium oxide, 3 parts zinc oxide, and 90 parts metallic frit; wherein the metallic frit comprises the following raw materials: 15 parts kaolin, 2.5 parts calcined alumina, 10 parts wollastonite, 6 parts zinc oxide, 5 parts calcined talc, 25 parts potassium feldspar, 15 parts sodium feldspar, 10.5 parts zircon sand, 4 parts cerium oxide, 5 parts red lead, and 2 parts barium carbonate;

[0105] D. After drying, the bricks are fired in a kiln to obtain metallic glazed tiles.

[0106] Example 3

[0107] A. Preparation of the green body layer; 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 by mass percentage includes SiO2 67.85%, Al2O3 17.23%, Fe2O3 1.42%, TiO2 0.23%, CaO 1.18%, MgO 1.65%, K2O 1.85%, Na2O 2.05%, and loss on ignition 4.3%.

[0108] B. Apply the base glaze to the surface of the body layer to obtain the base glaze layer;

[0109] According to the mass percentage, the base glaze comprises the following raw materials: 10 parts kaolin, 8 parts alumina, 42 parts nepheline, 10 parts albite, 25 parts calcium strontium barium frit, and 22 parts zirconium silicate; wherein, according to the mass percentage, the calcium strontium barium frit comprises the following chemical composition: SiO2 44%, Al2O3 22%, Fe2O3 0.01%, TiO2 0.01%, CaO 8%, MgO 1%, K2O 0.5%, Na2O 0.01%, ZnO 2%, BaO 15%, and SrO 7%;

[0110] C. Apply a metallic glaze to the surface of the base glaze layer to obtain a metallic glaze layer;

[0111] The metallic glaze has a residue of 0.2–0.4 wt% when sieved through a 325-mesh sieve, and a specific gravity of 1.3 g / cm³. 3 According to the mass fraction, the metallic glaze comprises 8 parts kaolin, 5 parts cerium oxide, 5 parts zinc oxide, and 95 parts metallic frit; wherein the metallic frit comprises the following raw materials: 12 parts kaolin, 2 parts calcined alumina, 8 parts wollastonite, 4 parts zinc oxide, 2 parts calcined talc, 20 parts potassium feldspar, 10 parts sodium feldspar, 8 parts zircon sand with a zircon content of 64.12%, 3 parts cerium oxide, 3 parts red lead, and 1 part barium carbonate;

[0112] D. After drying, the bricks are fired in a kiln to obtain metallic glazed tiles.

[0113] Comparative Example 1

[0114] A. Preparation of the green body layer; 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 by mass percentage includes SiO2 67.85%, Al2O3 17.23%, Fe2O3 1.42%, TiO2 0.23%, CaO 1.18%, MgO 1.65%, K2O 1.85%, Na2O 2.05%, and loss on ignition 4.3%.

[0115] B. Apply a conventional base glaze to the surface of the body layer to obtain a conventional base glaze layer;

[0116] By weight percentage, the conventional base glaze comprises the following chemical components: SiO2 60.11%, Al2O3 24.22%, Fe2O3 0.278%, TiO2 0.273%, CaO 0.503%, MgO 3.44%, K2O 0.417%, Na2O 3.31%, ZrO 4.01%, and loss on ignition 1.8%.

[0117] C. Apply a metallic glaze to the surface of the ordinary base glaze layer to obtain a metallic glaze layer;

[0118] The metallic glaze has a residue of 0.2–0.4 wt% when sieved through a 325-mesh sieve, and a specific gravity of 1.3 g / cm³. 3 According to the mass fraction, the metallic glaze comprises 5 parts kaolin, 2 parts cerium oxide, 3 parts zinc oxide, and 90 parts metallic frit; wherein the metallic frit comprises the following raw materials: 15 parts kaolin, 2.5 parts calcined alumina, 10 parts wollastonite, 6 parts zinc oxide, 5 parts calcined talc, 25 parts potassium feldspar, 15 parts sodium feldspar, 10.5 parts zircon sand, 4 parts cerium oxide, 5 parts red lead, and 2 parts barium carbonate;

[0119] D. After drying, the bricks are fired in a kiln to obtain glittery glazed tiles.

[0120] The glazed tiles prepared in Examples 1-3 and Comparative Example 1 were subjected to conventional tests in the field of building ceramics, including hardness, gloss, and stain resistance. The results are shown in Table 1 below.

[0121] Table 1. Performance test results of glazed tiles in Examples 1-3 and Comparative Example 1

[0122] Test Project Example 1 Example 2 Example 3 Comparative Example 1 Glazed effect Strong flash effect Strong flash effect Strong flash effect The flash effect is average. Mohs hardness 9 10 9 7 Gloss (degrees) 50 71 62 35 antifouling level Level 5 Level 5 Level 5 Level 4

[0123] As can be seen from the performance test results in Table 1, the glazed tiles prepared by this method not only have a strong shimmering effect and metallic texture, but also good hardness and stain resistance. This makes the glazed tiles with metallic shimmering glaze layer both decorative and practical, which is more conducive to meeting the needs of consumers.

[0124] Specifically, Figure 1 This is an image showing the glaze effect of the metallic glitter glazed tile prepared in Example 2. Figure 2 This is an image showing the glaze effect of the glittery glazed tile prepared in Comparative Example 1. Figure 1 The flash effect presented is greater than Figure 2 The resulting shimmering effect is more intense, meaning that the formulation systems of the base glaze and the metallic shimmer glaze are well-matched, which further enhances the presentation of the metallic shimmer glaze effect.

[0125] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A method for preparing metallic glazed tiles, characterized in that, Includes the following steps: A. Prepare the blank layer; B. Apply the base glaze to the surface of the body layer to obtain the base glaze layer; According to the mass fractions, the base glaze comprises the following raw materials: 6-10 parts kaolin, 2-8 parts alumina, 35-42 parts nepheline, 2-10 parts albite, 18-25 parts calcium strontium barium frit and 18-22 parts zirconium silicate; According to mass percentage, the calcium strontium barium frit comprises the following chemical composition: SiO2 40-45%, Al2O3 19-25%, Fe2O3 0.01-0.1%, TiO2 0.01-0.1%, CaO 6-8%, MgO 1-3%, K2O 0.5-1.5%, Na2O 0.01-0.1%, ZnO 2-4%, BaO 15-22%, and SrO 5-7%; The firing curve of the calcium strontium barium frit is as follows: It takes 2 hours to heat the temperature from room temperature to 500°C. The temperature was raised from 500℃ to 1100℃ in 1 hour. The temperature was raised from 1100℃ to 1530℃ in 1 hour. Incubate at 1530℃ for 0.5 hours; C. Apply a metallic glaze to the surface of the base glaze layer to obtain a metallic glaze layer; According to the mass fractions, the metallic glaze comprises the following raw materials: 4-8 parts kaolin, 1-5 parts cerium oxide, 2-5 parts zinc oxide, and 85-95 parts metallic frit; According to the mass fractions, the metallic flash frit comprises the following raw materials: 12-20 parts kaolin, 2-5 parts calcined alumina, 8-15 parts wollastonite, 4-8 parts zinc oxide, 2-8 parts calcined talc, 20-30 parts potassium feldspar, 10-20 parts sodium feldspar, 8-15 parts zircon sand, 3-6 parts cerium oxide, 3-8 parts red lead, and 1-5 parts barium carbonate; The firing curve of the metal flash melt is as follows: It takes 2 hours to heat the temperature from room temperature to 500°C. The temperature was raised from 500℃ to 1100℃ in 1 hour. The temperature was raised from 1100℃ to 1500℃ in 1 hour. Keep warm at 1500℃ for 1 hour; D. After drying, the bricks are fired in a kiln to obtain metallic glazed tiles.

2. The method for preparing a metallic glazed tile according to claim 1, characterized in that, According to the mass fractions, the calcium strontium barium frit comprises the following raw materials: 25 parts kaolin, 8 parts calcined alumina, 21 parts quartz, 4 parts calcined talc, 20 parts barium carbonate, 8 parts strontium carbonate, 12 parts calcite, and 2 parts zinc oxide.

3. The method for preparing a metallic glazed tile according to claim 1, characterized in that, According to the mass fractions, the base glaze comprises the following raw materials: 8 parts kaolin, 4 parts alumina, 39 parts nepheline, 6 parts sodium feldspar, 22 parts calcium strontium barium frit, and 20 parts zirconium silicate.

4. The method for preparing a metallic glazed tile according to claim 1, characterized in that, The zircon sand contains 60-66% zircon oxide by mass percentage.

5. The method for preparing a metallic glazed tile according to claim 1, characterized in that, According to the mass fractions, the metallic flashing ingot comprises the following raw materials: 15 parts kaolin, 2.5 parts calcined alumina, 10 parts wollastonite, 6 parts zinc oxide, 5 parts calcined talc, 25 parts potassium feldspar, 15 parts sodium feldspar, 10.5 parts zircon sand, 4 parts cerium oxide, 5 parts red lead, and 2 parts barium carbonate. According to the mass fractions, the metallic glaze comprises the following raw materials: 5 parts kaolin, 2 parts cerium oxide, 3 parts zinc oxide, and 90 parts metallic frit.

6. The method for preparing a metallic glazed tile according to claim 1, characterized in that, In step C, the amount of metallic glitter glaze leaving a residue of 0.2-0.4% by mass when passing through a 325-mesh sieve.

7. The method for preparing a metallic glazed tile according to claim 1, characterized in that, It also includes step E, which is located between steps A and B; A. Prepare the blank layer; E. Using mold ink, inkjet printing is performed on the surface of the blank layer according to a preset pattern to obtain a mold texture layer; B. Apply a base glaze to the surface of the mold texture layer to obtain a base glaze layer; wherein, by mass percentage, the specific gravity of the base glaze is 1.55–1.6 g / cm³. 3 .

8. A metallic glazed tile, characterized in that, It is prepared using the method for preparing metallic glazed tiles according to any one of claims 1 to 7.

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