Pearl luster color glaze tile with stereoscopic positioning effect and preparation method thereof

Abstract

The present application relates to the technical field of building ceramics, and discloses a pearl luster color glaze tile with a three-dimensional positioning effect and a preparation method. First, a frit with a pearl luster effect is prepared by wrapping a layered glassy fluoroaluminosilicate with a low optical refractive index with a white metal oxide cerium oxide with a high refractive index. Meanwhile, a positioning dry particle layer with a concave-convex effect is added at the bottom of the pearl luster frit glaze layer, so that the pearl luster frit glaze layer can have a thickness deviation on the top of the glaze tile, that is, the thickness of the pearl luster frit glaze layer is thinner in the convex area of the positioning dry particle layer and thicker in the concave area of the positioning dry particle layer. The above thickness deviation is conducive to promoting the pearl luster frit with a layered structure carrier to produce stronger reflection, refraction and interference under light, thereby improving the pearl luster color effect on the surface of the glaze tile.

Description

Technical Field

[0001] This invention relates to the field of building ceramics technology, and in particular to a pearlescent iridescent glazed tile with a three-dimensional positioning effect 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 layer of glassy substance 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 ingredients, melted at high temperatures to form a glossy, glassy layer. Glazes come in various weights; those with a pearlescent effect are called pearlescent glazes. These glazes create a pearl-like luster, making the tiles appear more upscale and elegant, and enhancing the decorative effect of interior spaces.

[0004] Pearl frit is a type of frit that produces a pearlescent effect. When glazes containing pearl frit are applied to the surface of a ceramic tile and fired at high temperatures, the tile surface exhibits a pearlescent luster. This not only meets market demands for aesthetic appeal in ceramic tile products but also provides new ideas and directions for technological innovation and product upgrades in the ceramic industry, avoiding product homogenization and increasing the added value of ceramic tile products. However, existing pearl frits, due to differences in raw material selection and manufacturing processes, often result in ceramic tile glazes with a weak pearlescent effect, thus limiting their application. Furthermore, to control production costs, existing pearlescent glazed tiles generally have a layered structure including a body layer, a base glaze layer, an inkjet printing layer, and a pearlescent glaze layer. Each glaze layer is a smooth decorative layer, and the smooth surface of the decorative layer is not conducive to the presentation of the pearlescent effect in the pearlescent glaze layer, resulting in a poor pearlescent effect in existing pearlescent glazed tiles. Summary of the Invention

[0005] The purpose of this invention is to propose a pearlescent glazed tile with a three-dimensional positioning effect and a preparation method thereof. A positioning dry granule layer with an uneven effect is added to the bottom of the pearlescent frit glaze layer, so that the pearlescent frit glaze layer can produce a thickness deviation at the top of the glazed tile, thereby achieving the pearlescent glaze effect of the glazed tile and overcoming the shortcomings of the prior art.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A method for preparing pearlescent iridescent glazed tiles with a three-dimensional positioning effect includes the following steps:

[0008] A. Prepare ceramic blanks, press the ceramic blanks, and dry them to obtain the blank body layer;

[0009] B. Apply a base glaze to the top of the blank layer to obtain a base glaze layer;

[0010] C. Print positioning adhesive on the top of the base glaze layer according to the preset pattern, then place the positioning dry granules on the top of the base glaze layer, and absorb and recycle the positioning dry granules that are not adhered by the positioning adhesive to obtain the positioning dry granule layer.

[0011] D. Apply pearlescent frit glaze on top of the positioning dry granule layer to obtain a pearlescent frit glaze layer;

[0012] E. After drying, the tiles are fired in a kiln and polished to obtain pearlescent glazed tiles with a three-dimensional positioning effect.

[0013] In step D, the raw materials for the pearlescent frit glaze include pearlescent frit, and according to mass parts, the pearlescent frit includes the following raw materials: 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.

[0014] Preferably, in step D, the temperature profile of the pearlescent fused block is as follows:

[0015] It takes 1.5 to 3 hours to heat the temperature from room temperature to 500°C.

[0016] The temperature rises from 500℃ to 1100℃ in 1.5 to 2.5 hours.

[0017] The temperature rises from 1100℃ to 1550℃ in 0.2 to 0.4 hours.

[0018] 1550℃, heat preservation for 0.1~0.2h;

[0019] The temperature dropped from 1550℃ to 1450℃ in 0.05–0.1 hours.

[0020] 1450℃, keep warm for 0.2 to 0.4 hours.

[0021] Preferably, the perlite, potassium hexafluoroaluminate, and cerium oxide are all sieved through a 325-mesh sieve, and the zirconium oxide is sieved through a 250-mesh sieve.

[0022] Preferably, in step D, the pearlescent frit glaze comprises the following raw materials in parts by mass: 4-6 parts of kaolin and 94-96 parts of pearlescent frit, and the pearlescent frit glaze passes through a 325-mesh sieve with a residue of 0.2-0.4% by mass percentage.

[0023] Preferably, in step D, the pearlescent frit glaze is applied by spraying, and the specific gravity of the pearlescent frit glaze is 1.28 to 1.32.

[0024] Preferably, in step C, the particle size distribution of the positioned dry granules is as follows, by mass percentage: 40% remaining after passing through a 120-140 mesh sieve, 20% remaining after passing through a 100-120 mesh sieve, and 40% remaining after passing through an 80-100 mesh sieve.

[0025] Preferably, in step C, the positioning dry granules, calculated by mass parts, include the following raw materials: 10-15 parts quartz, 10-15 parts calcined alumina, 5-10 parts corundum, 30-40 parts potassium feldspar, 5-15 parts sodium feldspar, 2-5 parts calcined talc, 10-15 parts magnesium carbonate, 8-15 parts wollastonite, and 1-5 parts zinc oxide.

[0026] Preferably, the weight of the positioned dry granules is 58-62 g / 350 mm. 2 .

[0027] Preferably, in step D, the pearlescent frit comprises the following raw materials according to mass parts: 36 parts perlite, 13 parts calcined alumina, 10 parts potassium hexafluoroaluminate, 4 parts zinc oxide, 10 parts calcite, 10 parts potassium feldspar, 5 parts calcium fluoride, 2 parts zirconium oxide, 7 parts cerium oxide and 8 parts lead carbonate.

[0028] In step C, the positioning dry granules, calculated by mass, include the following raw materials: 13 parts quartz, 8 parts calcined alumina, 7 parts corundum, 35 parts potassium feldspar, 10 parts sodium feldspar, 3 parts calcined talc, 12 parts magnesium carbonate, 10 parts wollastonite, and 2 parts zinc oxide.

[0029] A pearlescent glazed tile with a three-dimensional positioning effect is prepared using the above-mentioned method for preparing pearlescent glazed tiles with a three-dimensional positioning effect.

[0030] The technical solution provided by this invention may include the following beneficial effects:

[0031] 1. Using perlite as a carrier for the layered structure, potassium, silicon, aluminum, and fluorine are introduced into the frit formulation. The proportions of these four key elements in the formulation system are limited by the amount of raw materials added, resulting in a mica-like glassy body with a layered structure after the reaction. Because the resulting mica-like glassy body has the transparency of a glass phase, and the cerium oxide coating its surface is white, and these transparent and white properties are attached to the layered carrier, incident light can form a strong pearlescent reflection when it strikes this special carrier, bringing consumers an aesthetic experience.

[0032] 2. Potassium hexafluoroaluminate in the frit raw materials lowers the melting point of calcined alumina, allowing the formulation system to produce mica components at lower calcination temperatures, thereby reducing the energy consumption in frit production. Added zinc oxide and lead carbonate act as strong fluxing agents and crystal nucleation agents, lowering the crystallization activation energy and crystallization peak temperature, which is beneficial for the crystallization of cerium oxide and zirconium oxide, further enhancing the pearly luster of the frit. Lead oxide, obtained from the high-temperature decomposition of lead carbonate, can also react with silicon oxide in the formulation system to form lead silicate compounds, preventing the leaching of excessive lead while ensuring fluxing performance.

[0033] 3. A positioning dry granule layer with an uneven effect is added to the bottom of the pearlescent frit glaze layer, so that the pearlescent frit glaze layer can produce a thickness deviation on the top of the glazed tile. That is, the pearlescent frit glaze layer is thinner in the area where the positioning dry granule layer protrudes and thicker in the area where the positioning dry granule layer is recessed. The above thickness deviation helps to promote the pearlescent frit with layered structure carrier to produce stronger reflection, refraction and interference under light conditions, thereby enhancing the pearlescent iridescent effect on the surface of the glazed tile. Attached Figure Description

[0034] Figure 1 This is an SEM image of the pearlescent fused block in this invention.

[0035] Figure 2 This is a schematic diagram of the brick surface effect in Embodiment 1 of the present invention. Detailed Implementation

[0036] A method for preparing pearlescent iridescent glazed tiles with a three-dimensional positioning effect includes the following steps:

[0037] A. Prepare ceramic blanks, press the ceramic blanks, and dry them to obtain the blank body layer;

[0038] B. Apply a base glaze to the top of the blank layer to obtain a base glaze layer;

[0039] C. Print positioning adhesive on the top of the base glaze layer according to the preset pattern, then place the positioning dry granules on the top of the base glaze layer, and absorb and recycle the positioning dry granules that are not adhered by the positioning adhesive to obtain the positioning dry granule layer.

[0040] D. Apply pearlescent frit glaze on top of the positioning dry granule layer to obtain a pearlescent frit glaze layer;

[0041] E. After drying, the tiles are fired in a kiln and polished to obtain pearlescent glazed tiles with a three-dimensional positioning effect.

[0042] In step D, the raw materials for the pearlescent frit glaze include pearlescent frit, and according to mass parts, the pearlescent frit includes the following raw materials: 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.

[0043] To address the technical problem of insufficient pearlescent effect in existing pearlescent frits, this technical solution first proposes a pearlescent frit with a layered carrier structure. This frit consists of a white metal oxide, cerium oxide, with a high refractive index (2.44), encapsulating a layered glassy fluoroaluminosilicate (hereinafter referred to as "mica glass") with a low optical refractive index (1.54), thus creating a frit with a pearlescent effect. When incident light irradiates the surface of the frit, complex refraction, reflection, and interference phenomena occur, resulting in a strong pearlescent luster. Furthermore, since the metal oxide encapsulating the mica particles is cerium oxide, and cerium oxide crystals have a face-centered cubic crystal structure with low interfacial energy on its crystal planes parallel to the glaze surface, it exhibits strong anisotropy during growth and excellent specular reflection characteristics for visible light, resulting in strong specular reflection. Combined with the excellent scattering effect of cubic zirconia crystals on incident light, the pearlescent effect of the frit is effectively enhanced. 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, assisting cerium oxide crystals in further enhancing the pearlescent effect of the frit.

[0044] like Figure 1 The image shown is an SEM image of the pearlescent fused block prepared by this method. The gray part in the image is cerium oxide, the black part is mica glass, and the white particles are cubic zirconia crystals. It can be seen that the pearlescent fused block is essentially cerium oxide encapsulating mica glass, with zirconia crystals on the surface of the cerium oxide.

[0045] Specifically, this technical solution uses perlite as a carrier for a layered structure, and introduces potassium, silicon, aluminum, and fluorine elements into the frit formulation. The proportion of these four key elements in the formulation system is limited by the amount of raw materials added, so that the raw material formulation of the pearlescent frit produces a mica-like glass with a layered structure after the reaction. Because the generated mica-like glass has the transparency of a glass phase, and the cerium oxide wrapped on its surface is white, and these transparent and white properties are attached to the layered carrier, when incident light is incident on the special carrier, it can form a strong pearlescent reflection, bringing consumers an aesthetic enjoyment.

[0046] Furthermore, potassium hexafluoroaluminate in the frit raw material lowers the melting point of calcined alumina, allowing the formulation system to produce mica components at lower calcination temperatures, thereby reducing the energy consumption in frit production. The added zinc oxide and lead carbonate act as strong fluxing agents and crystal nucleation agents, lowering the crystallization activation energy and crystallization peak temperature, which is beneficial for the crystallization of cerium oxide and zirconium oxide, thus further enhancing the pearly luster of the frit. In addition, lead oxide, obtained from the high-temperature decomposition of lead carbonate, can react with silicon oxide in the formulation system to form lead silicate compounds, preventing the leaching of excessive lead while ensuring fluxing performance.

[0047] Furthermore, in order to enable glazed tiles to exhibit a pearlescent effect, this solution adds a layer of positioning dry granules with an uneven texture to the bottom of the pearlescent frit glaze layer. This allows the pearlescent frit glaze layer to have a thickness deviation on the top of the glazed tile. That is, the pearlescent frit glaze layer is thinner in the protruding areas of the positioning dry granules layer and thicker in the recessed areas of the positioning dry granules layer. This thickness deviation helps to promote stronger reflection, refraction, and interference of the pearlescent frit with a layered structure carrier under light conditions, thereby enhancing the pearlescent effect on the surface of the glazed tile.

[0048] To further explain, in step D, the temperature profile of the pearlescent fused block is as follows:

[0049] It takes 1.5 to 3 hours to heat the temperature from room temperature to 500°C.

[0050] The temperature rises from 500℃ to 1100℃ in 1.5 to 2.5 hours.

[0051] The temperature rises from 1100℃ to 1550℃ in 0.2 to 0.4 hours.

[0052] 1550℃, heat preservation for 0.1~0.2h;

[0053] The temperature dropped from 1550℃ to 1450℃ in 0.05–0.1 hours.

[0054] 1450℃, keep warm for 0.2 to 0.4 hours.

[0055] In a preferred embodiment of this technical solution, optimizing the temperature curve during the high-temperature firing of the fused ingot helps to further enhance the pearlescent effect of the fused ingot.

[0056] Specifically, the frit needs to be held at 1550°C for 0.1 to 0.2 hours during the high-temperature firing process. If the holding time is too long, the amount of glass generated in the formula system will increase significantly, thereby covering the generated layered structure and easily weakening the overall pearly luster of the frit. If the holding time is too short, the amount of mica glass synthesized will be less, making it difficult to obtain a strong pearly effect.

[0057] More specifically, the melting point takes 0.05 to 0.1 hours to cool from 1550°C to 1450°C during the high-temperature firing process. If the cooling time is too short, the mica glass body will not be completely coated by cerium oxide, which will easily weaken the overall pearly luster of the melting point. If the cooling time is too long, the viscosity of the melting point will decrease, which is not conducive to the cerium oxide crystals coating the mica glass body, and the pearly luster will also be worse.

[0058] Preferably, in step D, the temperature profile of the pearlescent fused block is as follows:

[0059] It takes 2 hours to heat the temperature from room temperature to 500℃.

[0060] It took 2 hours to raise the temperature from 500℃ to 1100℃.

[0061] The temperature rose from 1100℃ to 1550℃ in 0.3 hours.

[0062] 1550℃, heat preservation for 0.1h;

[0063] The temperature dropped from 1550℃ to 1450℃ in 0.05 hours.

[0064] 1450℃, heat preservation for 0.3h.

[0065] As a further improvement of the above embodiment, this solution further optimizes the temperature profile of the pearlescent frit, which is beneficial for achieving the best pearlescent effect in the frit.

[0066] To further clarify, the perlite, potassium hexafluoroaluminate, and cerium oxide all have a particle size that passes through a 325-mesh sieve, while the zirconium oxide has a particle size that passes through a 250-mesh sieve.

[0067] This solution also optimizes the particle size of perlite, potassium hexafluoroaluminate, cerium oxide, and zirconium oxide, thereby ensuring uniform gloss of the pearlescent frit and avoiding uneven glitter points in pearlescent glazes using the aforementioned pearlescent frit.

[0068] To further explain, in step D, the pearlescent frit glaze comprises the following raw materials according to the mass percentage: 4-6 parts of kaolin and 94-96 parts of pearlescent frit, and the pearlescent frit glaze passes through a 325-mesh sieve with a residue of 0.2-0.4% by mass percentage.

[0069] In order to effectively improve the suspension of pearlite glaze containing pearlite frit and prevent the frit from settling in the glaze slurry, this solution also adds kaolin to the pearlite glaze, which can effectively improve the suspension and water retention of the glaze slurry and improve the operability of glaze application.

[0070] To further clarify, in step D, the pearlescent frit glaze is applied by spraying, and the specific gravity of the pearlescent frit glaze is 1.28 to 1.32.

[0071] In one embodiment of this technical solution, the specific gravity of the pearlescent frit glaze used for spraying is controlled. On the one hand, this can increase the solid content of the sprayed glaze while ensuring that the spray gun can achieve atomization. On the other hand, it can better form a thickness deviation on the top of the positioning dry granule layer to achieve the ideal pearlescent illusion effect.

[0072] Preferably, the specific gravity of the pearlescent frit glaze is 1.3.

[0073] To further explain, in step C, the particle size distribution of the positioned dry granules, according to mass percentage, is as follows: 40% remaining after passing through a 120-140 mesh sieve, 20% remaining after passing through a 100-120 mesh sieve, and 40% remaining after passing through an 80-100 mesh sieve.

[0074] In another embodiment of this technical solution, by optimizing the particle size distribution of the positioning dry granules, the following advantages are achieved: First, it is beneficial to improve the fluidity of the positioning dry granules, thereby improving their application convenience and stability; Second, it is beneficial to increase the calcination temperature of the positioning dry granules, thereby reducing the melting boundary, enhancing the three-dimensional texture of the positioning dry granules, and further enhancing the pearlescent effect of the pearlescent frit glaze layer.

[0075] It should be noted that the positioning dry particles in this solution refer to small particles with a certain particle size distribution formed after the positioning frit is crushed into particles of a certain fineness by a crusher.

[0076] To further explain, in step C, the positioning dry granules, calculated by mass, include the following raw materials: 10-15 parts quartz, 10-15 parts calcined alumina, 5-10 parts corundum, 30-40 parts potassium feldspar, 5-15 parts sodium feldspar, 2-5 parts calcined talc, 10-15 parts magnesium carbonate, 8-15 parts wollastonite, and 1-5 parts zinc oxide.

[0077] To ensure a stable thickness deviation in the pearlescent frit glaze layer, this solution requires reducing the high-temperature viscosity of the positioning dry granules to guarantee the uneven surface effect. Therefore, this solution also optimizes the raw material formula of the positioning dry granules, ensuring that the fired granules use corundum and cordierite as the main crystalline phases. This prevents the positioning dry granules from melting flat during the firing process of the glazed tiles, maintaining their positioning state during application.

[0078] To further clarify, the basis weight of the positioned dry granules is 58–62 g / 350 mm. 2 .

[0079] In the actual production of pearlescent glazed tiles, the unevenness of the positioning dry granule layer can be controlled by adjusting the weight of the positioning dry granules (i.e., the amount of positioning dry granules used in step D), thereby adjusting the pearlescent effect of the pearlescent frit glaze layer.

[0080] It should be noted that the gram weight of the dry pellets in this solution refers to the weight of the dry pellets positioned in a 350mm*350mm tray.

[0081] Preferably, the weight of the positioned dry granules is 60g / 350mm. 2 .

[0082] To further explain, in step D, the pearlescent frit comprises the following raw materials according to the mass fractions: 36 parts perlite, 13 parts calcined alumina, 10 parts potassium hexafluoroaluminate, 4 parts zinc oxide, 10 parts calcite, 10 parts potassium feldspar, 5 parts calcium fluoride, 2 parts zirconium oxide, 7 parts cerium oxide, and 8 parts lead carbonate.

[0083] In step C, the positioning dry granules, calculated by mass, include the following raw materials: 13 parts quartz, 8 parts calcined alumina, 7 parts corundum, 35 parts potassium feldspar, 10 parts sodium feldspar, 3 parts calcined talc, 12 parts magnesium carbonate, 10 parts wollastonite, and 2 parts zinc oxide.

[0084] This solution also provides an optimal ratio of pearlescent frit and positioning dry granules, which is beneficial for achieving the best surface gloss and static friction coefficient of pearlescent glazed tiles, resulting in the strongest pearlescent illusion effect.

[0085] A pearlescent glazed tile with a three-dimensional positioning effect is prepared using the above-mentioned method for preparing pearlescent glazed tiles with a three-dimensional positioning effect.

[0086] This solution adds a positioning dry granule layer with an uneven effect to the bottom of the pearlescent frit glaze layer, so that the pearlescent frit glaze layer can produce a thickness deviation on the top of the glazed tile, thereby achieving the pearlescent iridescent effect of the glazed tile and overcoming the shortcomings of the existing technology.

[0087] The technical solution of the present invention will be further illustrated below through specific embodiments.

[0088] Example 1

[0089] A. Prepare ceramic blanks, press them, and dry them to obtain a body layer. The body layer is prepared from conventional ceramic raw materials, and its chemical composition 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%.

[0090] B. Apply a base glaze to the top of the body layer to obtain a base glaze layer; wherein the base glaze layer is made by firing a conventional base glaze in the ceramics industry, and the chemical composition of the base glaze layer by mass percentage includes Al2O3 16.73%, SiO2 50.48%, CaO 8.04%, MgO 5.79%, BaO 7.01%, ZnO 4.85%, K2O 3.9%, and Na2O 3.03%.

[0091] C. Print positioning adhesive on the top of the base glaze layer according to a preset pattern, then apply positioning dry granules to the top of the base glaze layer. Adsorb and recycle any positioning dry granules not adhered to the positioning adhesive to obtain a positioning dry granule layer. The positioning dry granules, calculated by weight, comprise the following raw materials: 13 parts quartz, 8 parts calcined alumina, 7 parts corundum, 35 parts potassium feldspar, 10 parts sodium feldspar, 3 parts calcined talc, 12 parts magnesium carbonate, 10 parts wollastonite, and 2 parts zinc oxide. The weight of the positioning dry granules is 60g / 350mm. 2 .

[0092] D. Spray pearlescent frit glaze onto the top of the positioned dry granule layer to obtain a pearlescent frit glaze layer; wherein, calculated by mass parts, the raw materials of the pearlescent frit glaze include 5 parts of kaolin and 95 parts of pearlescent frit, and by mass percentage, the pearlescent frit glaze passes through a 325-mesh sieve with a residue of 0.2-0.4%, and a specific gravity of 1.3; calculated by mass parts, the pearlescent frit includes the following raw materials: 36 parts of perlite passing through a 325-mesh sieve, 13 parts of calcined alumina, 10 parts of potassium hexafluoroaluminate passing 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 passing through a 250-mesh sieve, 7 parts of cerium oxide passing through a 325-mesh sieve, and 8 parts of lead carbonate. Furthermore, the temperature profile of the pearlescent frit is as follows:

[0093] It takes 2 hours to heat the temperature from room temperature to 500℃.

[0094] It took 2 hours to raise the temperature from 500℃ to 1100℃.

[0095] The temperature rose from 1100℃ to 1550℃ in 0.3 hours.

[0096] 1550℃, heat preservation for 0.1h;

[0097] The temperature dropped from 1550℃ to 1450℃ in 0.05 hours.

[0098] 1450℃, heat preservation for 0.3h.

[0099] E. After drying, the tiles are fired in a kiln and polished to obtain pearlescent glazed tiles with a three-dimensional effect. A schematic diagram of the tile surface effect is shown below. Figure 2 As shown.

[0100] Example 2

[0101] A. Prepare ceramic blanks, press them, and dry them to obtain a body layer. The body layer is prepared from conventional ceramic raw materials, and its chemical composition 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%.

[0102] B. Apply a base glaze to the top of the body layer to obtain a base glaze layer; wherein the base glaze layer is made by firing a conventional base glaze in the ceramics industry, and the chemical composition of the base glaze layer by mass percentage includes Al2O3 16.73%, SiO2 50.48%, CaO 8.04%, MgO 5.79%, BaO 7.01%, ZnO 4.85%, K2O 3.9%, and Na2O 3.03%.

[0103] C. Print positioning adhesive on the top of the base glaze layer according to a preset pattern, then apply positioning dry granules to the top of the base glaze layer. Adsorb and recycle any positioning dry granules not adhered to the positioning adhesive to obtain a positioning dry granule layer. The positioning dry granules, calculated by weight, comprise the following raw materials: 15 parts quartz, 15 parts calcined alumina, 5 parts corundum, 40 parts potassium feldspar, 5 parts sodium feldspar, 5 parts calcined talc, 10 parts magnesium carbonate, 15 parts wollastonite, and 5 parts zinc oxide. The weight of the positioning dry granules is 58g / 350mm. 2 .

[0104] D. Spray pearlescent frit glaze onto the top of the positioned dry granule layer to obtain a pearlescent frit glaze layer; wherein, calculated by mass parts, the raw materials of the pearlescent frit glaze include 5 parts of kaolin and 95 parts of pearlescent frit, and by mass percentage, the pearlescent frit glaze passes through a 325-mesh sieve with a residue of 0.2-0.4%, and a specific gravity of 1.3; calculated by mass parts, the pearlescent frit includes the following raw materials: 30 parts of perlite passing through a 325-mesh sieve, 10 parts of calcined alumina, 8 parts of potassium hexafluoroaluminate passing 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 passing through a 250-mesh sieve, 5 parts of cerium oxide passing through a 325-mesh sieve, and 5 parts of lead carbonate. Furthermore, the temperature profile of the pearlescent frit is as follows:

[0105] It takes 1.5 hours to heat the temperature from room temperature to 500℃.

[0106] It took 2.5 hours to raise the temperature from 500℃ to 1100℃.

[0107] The temperature rose from 1100℃ to 1550℃ in 0.4 hours.

[0108] 1550℃, heat preservation for 0.1h;

[0109] The temperature dropped from 1550℃ to 1450℃ in 0.1 hours.

[0110] 1450℃, heat preservation for 0.4h.

[0111] E. After drying, the tiles are fired in a kiln and polished to obtain pearlescent glazed tiles with a three-dimensional positioning effect.

[0112] Example 3

[0113] A. Prepare ceramic blanks, press them, and dry them to obtain a body layer. The body layer is prepared from conventional ceramic raw materials, and its chemical composition 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%.

[0114] B. Apply a base glaze to the top of the body layer to obtain a base glaze layer; wherein the base glaze layer is made by firing a conventional base glaze in the ceramics industry, and the chemical composition of the base glaze layer by mass percentage includes Al2O3 16.73%, SiO2 50.48%, CaO 8.04%, MgO 5.79%, BaO 7.01%, ZnO 4.85%, K2O 3.9%, and Na2O 3.03%.

[0115] C. Print positioning adhesive on the top of the base glaze layer according to a preset pattern, then apply positioning dry granules to the top of the base glaze layer. Adsorb and recycle any positioning dry granules not adhered to the positioning adhesive to obtain a positioning dry granule layer. The positioning dry granules, calculated by weight, comprise the following raw materials: 10 parts quartz, 10 parts calcined alumina, 10 parts corundum, 30 parts potassium feldspar, 15 parts sodium feldspar, 2 parts calcined talc, 15 parts magnesium carbonate, 8 parts wollastonite, and 1 part zinc oxide. The weight of the positioning dry granules is 62g / 350mm. 2 .

[0116] D. Spray pearlescent frit glaze onto the top of the positioned dry granule layer to obtain a pearlescent frit glaze layer; wherein, calculated by mass parts, the raw materials of the pearlescent frit glaze include 5 parts of kaolin and 95 parts of pearlescent frit, and by mass percentage, the pearlescent frit glaze passes through a 325-mesh sieve with a residue of 0.2-0.4%, and a specific gravity of 1.3; calculated by mass parts, the pearlescent frit includes the following raw materials: 40 parts of perlite passing through a 325-mesh sieve, 15 parts of calcined alumina, 15 parts of potassium hexafluoroaluminate passing 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 passing through a 250-mesh sieve, 12 parts of cerium oxide passing through a 325-mesh sieve, and 10 parts of lead carbonate. Furthermore, the temperature profile of the pearlescent frit is as follows:

[0117] It took 3 hours to heat the temperature from room temperature to 500℃.

[0118] It took 1.5 hours to raise the temperature from 500℃ to 1100℃.

[0119] The temperature rose from 1100℃ to 1550℃ in 0.2 hours.

[0120] 1550℃, heat preservation for 0.2 hours;

[0121] The temperature dropped from 1550℃ to 1450℃ in 0.05 hours.

[0122] 1450℃, heat preservation for 0.2h.

[0123] E. After drying, the tiles are fired in a kiln and polished to obtain pearlescent glazed tiles with a three-dimensional positioning effect.

[0124] Comparative Example

[0125] a. Prepare ceramic blanks, press them, and dry them to obtain a body layer. The body layer is prepared from conventional ceramic raw materials, and its chemical composition 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%.

[0126] b. Apply a base glaze to the top of the body layer to obtain a base glaze layer; wherein the base glaze layer is made by firing a conventional base glaze in the ceramics industry, and the chemical composition of the base glaze layer by mass percentage includes Al2O3 16.73%, SiO2 50.48%, CaO 8.04%, MgO 5.79%, BaO 7.01%, ZnO 4.85%, K2O 3.9%, and Na2O 3.03%.

[0127] c. Spray pearlescent frit glaze onto the top of the base glaze layer to obtain a pearlescent frit glaze layer; wherein, by mass percentage, the raw materials of the pearlescent frit glaze include 5 parts kaolin and 95 parts pearlescent frit, and by mass percentage, the pearlescent frit glaze passes through a 325-mesh sieve with a residue of 0.2-0.4%, and a specific gravity of 1.3; the pearlescent frit, by mass percentage, includes the following raw materials: 30 parts perlite (passed through a 325-mesh sieve), 10 parts calcined alumina, 8 parts potassium hexafluoroaluminate (passed through a 325-mesh sieve), 2 parts zinc oxide, 5 parts calcite, 5 parts potassium feldspar, 3 parts calcium fluoride, 1 part zirconium oxide (passed through a 250-mesh sieve), 5 parts cerium oxide (passed through a 325-mesh sieve), and 5 parts lead carbonate. Furthermore, the temperature profile of the pearlescent frit is as follows:

[0128] It takes 1.5 hours to heat the temperature from room temperature to 500℃.

[0129] It took 2.5 hours to raise the temperature from 500℃ to 1100℃.

[0130] The temperature rose from 1100℃ to 1550℃ in 0.4 hours.

[0131] 1550℃, heat preservation for 0.1h;

[0132] The temperature dropped from 1550℃ to 1450℃ in 0.1 hours.

[0133] 1450℃, heat preservation for 0.4h.

[0134] d. After drying, the tiles are fired in a kiln and then polished to obtain glazed tiles.

[0135] The glazed tiles prepared in Examples 1-3 and the comparative example were subjected to conventional gloss and static friction coefficient tests in the field of building ceramics. The results are shown in Table 1 below:

[0136] Table 1. Performance test results of glazed tiles in Examples 1-3 and the comparative examples.

[0137]

[0138] The pearlescent glazed tile proposed in this solution adds a layer of positioning dry granules with a concave-convex effect to the bottom of the pearlescent frit glaze layer, so that the pearlescent frit glaze layer can produce a thickness deviation at the top of the glazed tile, thereby achieving the pearlescent glaze effect; at the same time, the positioning dry granules with a concave-convex effect can also give the glazed tile a certain anti-slip property.

[0139] 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 pearlescent iridescent glazed tiles with a three-dimensional positioning effect, characterized in that, Includes the following steps: A. Prepare ceramic blanks, press the ceramic blanks, and dry them to obtain the blank body layer; B. Apply a base glaze to the top of the blank layer to obtain a base glaze layer; C. Print positioning adhesive on the top of the base glaze layer according to the preset pattern, then place the positioning dry granules on the top of the base glaze layer, and absorb and recycle the positioning dry granules that are not adhered by the positioning adhesive to obtain the positioning dry granule layer. D. Apply pearlescent frit glaze on top of the positioning dry granule layer to obtain a pearlescent frit glaze layer; E. After drying, the tiles are fired in a kiln and polished to obtain pearlescent glazed tiles with a three-dimensional positioning effect. In step D, the raw materials for the pearlescent frit glaze include pearlescent frit, and according to mass parts, the pearlescent frit includes the following raw materials: 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.

2. The method for preparing a pearlescent iridescent glazed tile with a three-dimensional positioning effect according to claim 1, characterized in that, In step D, the temperature profile of the pearlescent fused block is as follows: It takes 1.5 to 3 hours to heat the temperature from room temperature to 500°C. The temperature rises from 500℃ to 1100℃ in 1.5 to 2.5 hours. The temperature rises from 1100℃ to 1550℃ in 0.2 to 0.4 hours. 1550℃, heat preservation for 0.1~0.2h; The temperature dropped from 1550℃ to 1450℃ in 0.05–0.1 hours. 1450℃, keep warm for 0.2 to 0.4 hours.

3. The method for preparing a pearlescent iridescent glazed tile with a three-dimensional positioning effect according to claim 1, characterized in that, The perlite, potassium hexafluoroaluminate, and cerium oxide are all sieved through a 325-mesh sieve, and the zirconium oxide is sieved through a 250-mesh sieve.

4. The method for preparing a pearlescent iridescent glazed tile with a three-dimensional positioning effect according to claim 1, characterized in that, In step D, the pearlescent frit glaze comprises the following raw materials according to the mass percentage: 4-6 parts of kaolin and 94-96 parts of pearlescent frit. The pearlescent frit glaze passes through a 325-mesh sieve, and the residue is 0.2-0.4% according to the mass percentage.

5. The method for preparing a pearlescent iridescent glazed tile with a three-dimensional positioning effect according to claim 1, characterized in that, In step D, the pearlescent frit glaze is applied by spraying, and the specific gravity of the pearlescent frit glaze is 1.28 to 1.

32.

6. The method for preparing a pearlescent iridescent glazed tile with a three-dimensional positioning effect according to claim 1, characterized in that, In step C, the particle size distribution of the positioned dry granules is as follows, based on mass percentage: 40% remaining after passing through a 120-140 mesh sieve, 20% remaining after passing through a 100-120 mesh sieve, and 40% remaining after passing through an 80-100 mesh sieve.

7. The method for preparing a pearlescent iridescent glazed tile with a three-dimensional positioning effect according to claim 1, characterized in that, In step C, the positioning dry granules, calculated by mass, include the following raw materials: 10-15 parts quartz, 10-15 parts calcined alumina, 5-10 parts corundum, 30-40 parts potassium feldspar, 5-15 parts sodium feldspar, 2-5 parts calcined talc, 10-15 parts magnesium carbonate, 8-15 parts wollastonite, and 1-5 parts zinc oxide.

8. The method for preparing a pearlescent iridescent glazed tile with a three-dimensional positioning effect according to claim 1, characterized in that, The weight of the granules is 58-62 g / 350 mm. 2 .

9. The method for preparing a pearlescent iridescent glazed tile with a three-dimensional positioning effect according to claim 1, characterized in that, In step D, the pearlescent frit comprises the following raw materials according to mass parts: 36 parts perlite, 13 parts calcined alumina, 10 parts potassium hexafluoroaluminate, 4 parts zinc oxide, 10 parts calcite, 10 parts potassium feldspar, 5 parts calcium fluoride, 2 parts zirconium oxide, 7 parts cerium oxide, and 8 parts lead carbonate.

10. A pearlescent iridescent glazed tile with a three-dimensional positioning effect, characterized in that, It is prepared using the preparation method of pearlescent iridescent glazed tile with three-dimensional positioning effect as described in any one of claims 1 to 9.

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