A soft glaze with velvet texture, soft glaze tile and preparation method

Abstract

The present application belongs to the technical field of building ceramics, and particularly relates to a soft light glaze with a velvet texture, a soft light glaze tile and a preparation method. The soft light glaze comprises, from bottom to top, a bottom glaze, a protective glaze and a surface glaze. The method for preparing the soft light glaze tile comprises the steps of preparing a tile blank, applying the bottom glaze, applying the protective glaze, applying the surface glaze and firing. The soft light glaze is prepared by introducing three glazes to combine with each other, so that the prepared tile product does not need to go through a complicated polishing process, the gloss of the glaze surface is between 18-25 degrees, and the soft light performance is excellent, so that the prepared tile has more affinity and warmth. The tile prepared by the method has sufficient wear resistance, acid resistance, weather resistance and stain resistance, and can be used for decoration and protection in the fields of building, home, art and the like.

Description

Technical Field

[0001] This invention belongs to the field of architectural ceramics technology, specifically relating to a soft-light glaze with a velvety texture, soft-light glaze tiles, and a preparation method thereof. Background Technology

[0002] Soft-gloss glaze is a type of ceramic glaze with a unique luster and texture. With social development and progress, and people's aspirations for a better life, the materials used in decorative items are gradually shifting from natural marble to industrially produced ceramic tiles. In this process, those skilled in the art utilize various techniques and numerous textures and patterns to create glazes with varying gloss levels to meet the diverse needs of consumers. Among these, soft-gloss ceramic tiles, with their moderate surface gloss and smooth, delicate glaze, are particularly favored and loved by many consumers.

[0003] Currently, there are generally two methods for producing soft-gloss tiles with a suitable gloss and a silky, smooth texture: One method involves first applying a base glaze to the tile blank, then inkjet printing, and finally applying a soft-gloss glaze with a corresponding formula. In this method, the soft-gloss glaze formula uses various solvents, such as alkaline metal solvents like calcium, barium, and magnesium, as matting agents. By matching different proportions of Al2O3, different gloss levels of soft-gloss products can be formed. The gloss level of these products is generally between 8 and 15 degrees, which is a soft gloss level formed by the glaze itself. However, the drawback is that the current production process is mostly underglaze painting, which results in poor pattern clarity on dark-colored products. After reaching a gloss level of 30 degrees, the glaze effect does not achieve a soft-gloss texture. Furthermore, since the glaze achieves this effect through glaze crystallization, the requirements for kiln control are relatively high. The second method involves polishing and waxing. This method uses elastic and fiber modules with different mesh sizes and matte wax to achieve a soft gloss effect below 30 degrees. This method requires a large amount of machinery and involves significant wear and tear on the modules, as well as the consumption of wax and water. Furthermore, because the surface is waxed, the transparency is not as good as a normal soft gloss surface. Most importantly, the polishing process inevitably causes air bubbles in the glaze to be released, creating pores after waxing. This results in poor stain resistance. Moreover, after a period of time, the surface becomes less wear-resistant without the protection of wax, making it far less durable than a high-temperature fired glaze.

[0004] Therefore, there is an urgent need to develop a soft-light glaze with a simple process, abundant raw material sources, and a smooth and delicate texture with a gloss level between 18 and 25 degrees, giving the ceramic tile glaze a velvety feel. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a soft-light glaze with a velvety texture, soft-light glaze tiles, and a preparation method thereof.

[0006] The objective of this invention is achieved through the following technical solution: a soft-gloss glaze with a velvety texture, wherein the glaze consists of a base glaze, a protective glaze, and a top glaze from bottom to top;

[0007] The base glaze comprises the following raw materials in parts by weight:

[0008] Glaze ball clay: 8-10, calcined kaolin: 6-8, calcined alumina: 6-7, calcined talc: 4-5, wollastonite: 2-3, quartz sand: 10-14, zirconium silicate: 8-13, calcined zinc oxide: 0.3-0.8, albite: 15-20, potassium feldspar: 32-40;

[0009] The protective glaze comprises the following raw materials in parts by weight:

[0010] Washed kaolin: 5-8, titanium dioxide frit: 3-5, calcined alumina: 6-8, calcined talc: 4-6, wollastonite: 1-2, quartz sand: 8-11, zirconium silicate: 3-5, calcined zinc oxide: 2-3, sodium feldspar: 28-36, potassium feldspar: 30-35;

[0011] The surface glaze comprises the following raw materials in parts by weight:

[0012] Washed kaolin: 6-8, calcined kaolin: 4-6, water-milled ultrafine albite: 30-35, strontium carbonate: 9-11, calcined talc: 8-10, dolomite powder: 9-11, calcined zinc oxide: 5-7, matte frit: 7-9, smooth frit: 10-15; wherein, the particle size of the water-milled ultrafine albite is less than 1.5% after passing through a 250-mesh sieve;

[0013] The matte frit is composed of the following raw materials in parts by weight: alumina: 18-30, silicon dioxide: 48-58, sodium oxide: 1-5, potassium oxide: 1-4, calcium oxide: 4-12, barium oxide: 5-15, magnesium oxide: 2-7; the soft-light frit is composed of the following raw materials in parts by weight: alumina: 3-12, cordierite powder: 3-7, albite: 20-30, potassium feldspar: 5-14, strontium carbonate: 5-12, talc: 5-12, calcite: 4-10, zinc oxide: 1-5, barium carbonate: 3-9, quartz sand: 15-25.

[0014] As a preferred technical solution, the base glaze comprises the following raw materials in parts by weight:

[0015] Glaze ball clay: 8, calcined kaolin: 7, calcined alumina: 7, calcined talc: 5, wollastonite: 2, quartz sand: 12, zirconium silicate: 10, calcined zinc oxide: 0.5, sodium feldspar: 16, potassium feldspar: 32.5;

[0016] The protective glaze comprises the following raw materials in parts by weight:

[0017] Washed kaolin: 7, titanium dioxide frit: 3, calcined alumina: 6, calcined talc: 5, wollastonite: 1, quartz sand: 9, zirconium silicate: 4, calcined zinc oxide: 2, sodium feldspar: 30, potassium feldspar: 33;

[0018] The surface glaze comprises the following raw materials in parts by weight:

[0019] Washed kaolin: 7, calcined kaolin: 6, water-milled ultrafine albite: 32; strontium carbonate: 9, calcined talc: 8, dolomite powder: 10, calcined zinc oxide: 6, matte frit: 8, soft-look frit: 14;

[0020] The matte frit is composed of the following raw materials in parts by weight: alumina: 21, silicon dioxide: 53, sodium oxide: 3, potassium oxide: 2, calcium oxide: 8, barium oxide: 8, magnesium oxide: 5; the soft-light frit is composed of the following raw materials in parts by weight: alumina: 7, cordierite powder: 5, albite: 26, potassium feldspar: 10, strontium carbonate: 8, talc: 8, calcite: 7, zinc oxide: 3, barium carbonate: 6, quartz sand: 20.

[0021] Furthermore, the matte frit and the soft-light frit are prepared by the following method: weigh each component raw material according to the formula, mix each component raw material evenly, and calcine in a kiln to the molten state. The calcination time is 2.5 to 3.5 hours, the calcination temperature is 1340 to 1460°C, and after calcination, quench in cold water and process into frit with a particle size of 2 to 3 mm.

[0022] Furthermore, the base glaze, protective glaze, and top glaze are all prepared using the following method: each raw material is weighed according to the formula ratio and put into a ball mill jar, water (25-35% by weight of the glaze), methylcellulose, and sodium tripolyphosphate are added, and the mixture is ball-milled for 7-9 hours. The glaze slurry obtained from ball milling has a residue of less than 0.5% on a 325-mesh sieve, a glaze slurry flow rate of 30-45 seconds, and a specific gravity of 1.80-1.88 g / ml.

[0023] Furthermore, the amount of methylcellulose added during the preparation of the glaze is 0.07 to 0.1 parts by weight, and the amount of sodium tripolyphosphate added is 0.3 to 0.7 parts by weight.

[0024] Furthermore, when preparing the protective glaze, the amount of methylcellulose added is 0.05 to 0.12 parts by weight, and the amount of sodium tripolyphosphate added is 0.2 to 0.5 parts by weight.

[0025] A method for preparing a soft-light glazed tile with a velvety texture includes the following steps:

[0026] S1. Preparation of brick blanks: The powdered brick blanks are pressed into shape and dried in a drying kiln to obtain dried blanks; the dried blanks are then polished.

[0027] S2. Apply base glaze: Apply the first coat of soft-gloss base glaze to the polished and dried blank. The soft-gloss base glaze is applied by pouring glaze, and the amount of glaze is 400-500g / ㎡.

[0028] S3. Apply protective glaze: After the first coat of soft-light base glaze has dried, apply the second coat of soft-light protective glaze. The soft-light protective glaze is applied by pouring, and the amount of glaze is 300-350g / ㎡.

[0029] S4. Applying the surface glaze: After the second layer of soft-light protective glaze has dried, apply the third layer of soft-light surface glaze. The soft-light surface glaze is applied by pouring, and the amount of glaze is 350-400g / ㎡.

[0030] S5. Firing: The glazed brick blanks are fired at a temperature of 1180-1210℃ for 27-35 minutes. After firing, the edges are ground to obtain velvety textured soft-gloss glazed tiles.

[0031] Furthermore, step S3 includes printing an inkjet pattern, and after completion, a third layer of soft-light glaze is applied to the inkjet pattern.

[0032] In this invention, the base glaze comprises the following chemical components in weight percentages:

[0033] SiO2: 56%-62%, Al2O3: 17.5%-21%, Fe2O3: 0.1%-0.2%, TiO2: 0.01%-0.1%, CaO: 0.8%-1.35%, MgO: 0.9%-1.8%, K2O: 2.9%-3.8%, Na2O: 1.6%-3.4%, ZrO2: 4.6%-6.0%, ZnO: 0.2%-0.6%, IL: 0.7%-1.3%.

[0034] The protective glaze comprises the following chemical components by weight percentage:

[0035] SiO2: 59%-68%, Al2O3: 21.4%-25.3%, Fe2O3: 0.05%-0.1%, TiO2: 1.6%-2.8%, CaO: 1.2%-1.8%, MgO: 1.3%-2.2%, K2O: 2.4%-4.6%, Na2O: 2.5%-4.2%, ZrO2: 1.6%-2.5%, ZnO: 0.2%-0.6%, IL: 1.5%-2.2%.

[0036] The titanium dioxide frit in the protective glaze comprises the following chemical components by mass percentage:

[0037] SiO2: 56%-62%, Al2O3: 6%-8%, TiO2: 10%-18%, CaO: 16%-18%, MgO: 0%-1%, K2O: 4%-5%, Na2O: 2%-3%, P2O5: 0.5%-1.2%.

[0038] The surface glaze comprises the following chemical components by weight percentage:

[0039] SiO2: 48%-52%, Al2O3: 13.5%-15.4%, Fe2O3: 0.05%-0.1%, TiO2: 0.01%-0.05%, CaO: 4.2%-5.5%, Mg O: 3.8%-4.7%, K2O: 0.8%-1.6%, Na2O: 2.5%-3.8%, BaO: 1.4%-2.5%, ZnO: 4.8%-5.5%, SrO: 5.4%-6.2% TL: 6.7%-7.2%.

[0040] The matte frit in the glaze comprises the following chemical components by mass percentage:

[0041] SiO2: 48%-52.4%, Al2O3: 18.8%-22.6%, TiO2: 0.01%-0.05%, CaO: 6.9%-8.5%, MgO: 4.8%-6.7%, K2O: 0.2%-0.6%, Na2O: 1.2%-2.5%, BaO: 5.6%-6.4%.

[0042] The soft-light frit in the glaze comprises the following chemical components by mass percentage:

[0043] SiO2: 46%-50%, Al2O3: 13.6%-17.5%, TiO2: 0.01%-0.05%, CaO: 10.8%-14.5%, MgO: 2.7%-3. 4%, K2O: 0.8%-1.2%, Na2O: 1.8%-2.7%, BaO: 12.5%-13.8%, ZnO: 4.8%-5.7%, SrO: 7.5%-8.9%.

[0044] The present invention has the following advantages:

[0045] (1) The velvety soft-gloss glaze disclosed in this invention adopts a new formula system, consisting of three layers of glaze. The introduction of titanium dioxide frit in the second protective glaze greatly improves the whiteness of the brick surface, and the introduction of calcined zinc oxide helps to enhance the color development of inkjet patterns. The addition of the second glaze also allows for better control of the brick shape. In the formula system of the surface glaze, this invention introduces a large amount of alkaline earth metal raw materials (such as dolomite, calcined talc, strontium carbonate, zinc oxide, etc.) to reduce the gloss of the glaze surface. It also introduces two different systems of glass frit (matte frit and soft-gloss frit) to adjust the glaze effect, which can more effectively improve the wear resistance and stain resistance of the glaze surface, while also ensuring a smooth and flat glaze surface. At the same time, due to the effect of the introduction of glass frit, the deformation of the brick body caused by the shrinkage of the glaze layer is greatly reduced. It is also more stable than using raw material glaze, and can achieve rapid firing, reducing the firing time to a minimum of 27 minutes, significantly reducing energy consumption.

[0046] (2) This invention discloses a velvety textured soft-gloss glazed tile, comprising, from bottom to top, a body, a base glaze layer, a high-temperature matte protective glaze layer, (with or without) an inkjet printing layer, and a soft-gloss glaze layer. This soft-gloss glaze, through the introduction of three glazes combined together, allows the prepared tile product to achieve a glaze gloss level between 18 and 25 degrees without the need for a cumbersome polishing process, and possesses excellent soft-gloss properties, making the prepared tile more approachable and warm. The tile prepared by the method of this invention has sufficient wear resistance, acid resistance, weather resistance, and stain resistance, and can be used for decoration and protection in the fields of architecture, home furnishing, and art. Detailed Implementation

[0047] The present invention will be further described below with reference to embodiments, but the scope of protection of the present invention is not limited to the following description:

[0048] Example 1: A soft-gloss glaze with a velvety texture, wherein the glaze consists of a base glaze, a protective glaze, and a top glaze from bottom to top;

[0049] The base glaze comprises the following raw materials in parts by weight:

[0050] Glaze ball clay: 8, calcined kaolin: 6, calcined alumina: 6, calcined talc: 4, wollastonite: 2, quartz sand: 10, zirconium silicate: 8, calcined zinc oxide: 0.3, sodium feldspar: 15, potassium feldspar: 32;

[0051] The protective glaze comprises the following raw materials in parts by weight:

[0052] Washed kaolin: 5, titanium dioxide frit: 3, calcined alumina: 6, calcined talc: 4, wollastonite: 1, quartz sand: 8, zirconium silicate: 3, calcined zinc oxide: 2, sodium feldspar: 28, potassium feldspar: 30;

[0053] The surface glaze comprises the following raw materials in parts by weight:

[0054] Washed kaolin: 6, calcined kaolin: 4, water-milled ultrafine albite: 30, strontium carbonate: 9, calcined talc: 8, dolomite powder: 9, calcined zinc oxide: 5, matte frit: 7, smooth frit: 10; wherein the particle size of the water-milled ultrafine albite is less than 1.5% after passing through a 250-mesh sieve;

[0055] The matte frit is composed of the following raw materials in parts by weight: alumina: 18, silicon dioxide: 48, sodium oxide: 1, potassium oxide: 1, calcium oxide: 4, barium oxide: 5, magnesium oxide: 2; the soft-light frit is composed of the following raw materials in parts by weight: alumina: 3, cordierite powder: 3, albite: 20, potassium feldspar: 5, strontium carbonate: 5, talc: 5, calcite: 4, zinc oxide: 1, barium carbonate: 3, quartz sand: 15. The matte and soft-light frits are prepared by the following method: each component raw material is weighed according to the formula, and the components are mixed evenly. The mixture is then calcined in a kiln to a molten state for 2.5 hours at a temperature of 1340°C. After calcination, the mixture is quenched in cold water and processed into frits with a particle size of 2–3 mm.

[0056] Example 2: A soft-gloss glaze with a velvety texture, wherein the glaze consists of a base glaze, a protective glaze, and a top glaze from bottom to top;

[0057] The base glaze comprises the following raw materials in parts by weight:

[0058] Glaze ball clay: 10, calcined kaolin: 8, calcined alumina: 7, calcined talc: 5, wollastonite: 3, quartz sand: 14, zirconium silicate: 13, calcined zinc oxide: 0.8, sodium feldspar: 20, potassium feldspar: 40;

[0059] The protective glaze comprises the following raw materials in parts by weight:

[0060] Washed kaolin: 8, titanium dioxide frit: 5, calcined alumina: 8, calcined talc: 6, wollastonite: 2, quartz sand: 11, zirconium silicate: 5, calcined zinc oxide: 3, sodium feldspar: 36, potassium feldspar: 35;

[0061] The surface glaze comprises the following raw materials in parts by weight:

[0062] Washed kaolin: 8, calcined kaolin: 6, water-milled ultrafine albite: 35, strontium carbonate: 11, calcined talc: 10, dolomite powder: 11, calcined zinc oxide: 7, matte frit: 9, smooth frit: 15; wherein the particle size of the water-milled ultrafine albite is less than 1.5% after passing through a 250-mesh sieve;

[0063] The matte frit is composed of the following raw materials in parts by weight: alumina: 30, silicon dioxide: 58, sodium oxide: 5, potassium oxide: 4, calcium oxide: 12, barium oxide: 15, magnesium oxide: 7; the soft-light frit is composed of the following raw materials in parts by weight: alumina: 12, cordierite powder: 7, albite: 30, potassium feldspar: 14, strontium carbonate: 12, talc: 12, calcite: 10, zinc oxide: 5, barium carbonate: 9, quartz sand: 25. The matte and soft-light frits are prepared by the following method: each component raw material is weighed according to the formula, and the components are mixed evenly. The mixture is then calcined in a kiln to a molten state for 3.5 hours at a temperature of 1460℃. After calcination, the mixture is quenched in cold water and processed into frits with a particle size of 2–3 mm.

[0064] Example 3: A soft-gloss glaze with a velvety texture, wherein the glaze consists of a base glaze, a protective glaze, and a top glaze from bottom to top;

[0065] The base glaze comprises the following raw materials in parts by weight:

[0066] Glaze ball clay: 9, calcined kaolin: 6.5, calcined alumina: 6.3, calcined talc: 4.2, wollastonite: 2.5, quartz sand: 13, zirconium silicate: 11, calcined zinc oxide: 0.7, sodium feldspar: 18, potassium feldspar: 38;

[0067] The protective glaze comprises the following raw materials in parts by weight:

[0068] Washed kaolin: 6, titanium dioxide frit: 4, calcined alumina: 7, calcined talc: 5.5, wollastonite: 1.5, quartz sand: 10, zirconium silicate: 3.5, calcined zinc oxide: 2.6, albite: 33, potassium feldspar: 31;

[0069] The surface glaze comprises the following raw materials in parts by weight:

[0070] Washed kaolin: 6.5, calcined kaolin: 5, water-milled ultrafine albite: 34, strontium carbonate: 10, calcined talc: 9, dolomite powder: 9.5, calcined zinc oxide: 7, matte frit: 7.5, smooth frit: 13; wherein the water-milled ultrafine albite has a particle size of less than 1.5% residue after passing through a 250-mesh sieve;

[0071] The matte frit is composed of the following raw materials in parts by weight: alumina: 25, silicon dioxide: 55, sodium oxide: 2, potassium oxide: 3, calcium oxide: 6, barium oxide: 12, magnesium oxide: 4; the soft-light frit is composed of the following raw materials in parts by weight: alumina: 10, cordierite powder: 6, albite: 28, potassium feldspar: 12, strontium carbonate: 10, talc: 10, calcite: 5, zinc oxide: 2, barium carbonate: 7, quartz sand: 22. The matte and soft-light frits are prepared by the following method: each component raw material is weighed according to the formula, and the components are mixed evenly. The mixture is then calcined in a kiln to a molten state for 3 hours at a temperature of 1380℃. After calcination, the mixture is quenched in cold water and processed into frits with a particle size of 2-3 mm.

[0072] Example 4: A soft-gloss glaze with a velvety texture, wherein the glaze consists of a base glaze, a protective glaze, and a top glaze from bottom to top;

[0073] The base glaze comprises the following raw materials in parts by weight:

[0074] Glaze ball clay: 8, calcined kaolin: 7, calcined alumina: 7, calcined talc: 5, wollastonite: 2, quartz sand: 12, zirconium silicate: 10, calcined zinc oxide: 0.5, sodium feldspar: 16, potassium feldspar: 32.5;

[0075] The protective glaze comprises the following raw materials in parts by weight:

[0076] Washed kaolin: 7, titanium dioxide frit: 3, calcined alumina: 6, calcined talc: 5, wollastonite: 1, quartz sand: 9, zirconium silicate: 4, calcined zinc oxide: 2, sodium feldspar: 30, potassium feldspar: 33;

[0077] The surface glaze comprises the following raw materials in parts by weight:

[0078] Washed kaolin: 7, calcined kaolin: 6, water-milled ultrafine albite: 32; strontium carbonate: 9, calcined talc: 8, dolomite powder: 10, calcined zinc oxide: 6, matte frit: 8, soft-look frit: 14;

[0079] The matte frit is composed of the following raw materials in parts by weight: alumina: 21, silicon dioxide: 53, sodium oxide: 3, potassium oxide: 2, calcium oxide: 8, barium oxide: 8, magnesium oxide: 5; the soft-light frit is composed of the following raw materials in parts by weight: alumina: 7, cordierite powder: 5, albite: 26, potassium feldspar: 10, strontium carbonate: 8, talc: 8, calcite: 7, zinc oxide: 3, barium carbonate: 6, quartz sand: 20.

[0080] The matte and soft-light frits are prepared by the following method: weigh each component raw material according to the formula, mix each component raw material evenly, calcine in a kiln to the molten state, the calcine time is 3 hours, the calcine temperature is 1400℃, after calcine, quench in cold water, and process into frits with a particle size of 2.5mm.

[0081] Example 5: A method for preparing a soft-light glaze with a velvety texture, wherein the base glaze, protective glaze, and top glaze are all prepared by the following method: weigh each raw material according to the formula ratio of Example 2 and put them into a ball mill jar, add water, methylcellulose, and sodium tripolyphosphate at 25% of the weight of the glaze, and ball mill for 7 hours. The glaze slurry obtained by ball milling has a residue of less than 0.5% on a 325-mesh sieve, a glaze slurry flow rate of 30s, and a specific gravity of 1.80g / ml;

[0082] Specifically, when preparing the base glaze, 0.07 parts by weight of methylcellulose and 0.3 parts by weight of sodium tripolyphosphate are added; when preparing the protective glaze, 0.05 parts by weight of methylcellulose and 0.2 parts by weight of sodium tripolyphosphate are added; and when preparing the top glaze, 0.07 parts by weight of methylcellulose and 0.3 parts by weight of sodium tripolyphosphate are added.

[0083] Example 6: A method for preparing a soft-gloss glaze with a velvety texture, wherein the base glaze, protective glaze, and top glaze are all prepared by the following method: weigh each raw material according to the formula ratio of Example 3 and put them into a ball mill jar, add water, methylcellulose, and sodium tripolyphosphate (35% by weight of the glaze) and ball mill for 9 hours. The glaze slurry obtained by ball milling has a residue of less than 0.5% on a 325-mesh sieve, a glaze slurry flow rate of 30-45 seconds, and a specific gravity of 1.88 g / ml.

[0084] Specifically, when preparing the base glaze, 0.1 parts by weight of methylcellulose and 0.7 parts by weight of sodium tripolyphosphate are added; when preparing the protective glaze, 0.12 parts by weight of methylcellulose and 0.5 parts by weight of sodium tripolyphosphate are added; and when preparing the top glaze, 0.1 parts by weight of methylcellulose and 0.7 parts by weight of sodium tripolyphosphate are added.

[0085] Example 7: A method for preparing a soft-light glaze with a velvety texture, wherein the base glaze, protective glaze, and top glaze are all prepared by the following method: weigh each raw material according to the formula ratio of Example 4 and put them into a ball mill jar, add water, methylcellulose, and sodium tripolyphosphate at 30% of the weight of the glaze, and ball mill for 8 hours. The glaze slurry obtained by ball milling has a residue of less than 0.5% on a 325-mesh sieve, a glaze slurry flow rate of 35s, and a specific gravity of 1.85g / ml;

[0086] Specifically, when preparing the base glaze, 0.09 parts by weight of methylcellulose and 0.5 parts by weight of sodium tripolyphosphate are added; when preparing the protective glaze, 0.1 parts by weight of methylcellulose and 0.3 parts by weight of sodium tripolyphosphate are added; and when preparing the top glaze, 0.09 parts by weight of methylcellulose and 0.5 parts by weight of sodium tripolyphosphate are added.

[0087] Example 8: A method for preparing a soft-light glazed tile with a velvety texture, comprising the following steps:

[0088] S1. Preparation of brick blanks: The powdered brick blanks are pressed into shape and dried in a drying kiln to obtain dried blanks; the dried blanks are then polished.

[0089] S2. Apply base glaze: Apply the first layer of soft-light base glaze prepared in Example 5 to the polished and dried blank. The application method of the soft-light base glaze is glazing by pouring, and the amount of glaze is 400g / ㎡.

[0090] S3. Apply protective glaze: After the first layer of soft-light base glaze has dried, apply the second layer of soft-light protective glaze prepared in Example 5. The soft-light protective glaze is applied by pouring glaze, and the amount of glaze applied is 300g / ㎡.

[0091] S4. Applying the surface glaze: After the second layer of soft-light protective glaze has dried, apply the third layer of soft-light surface glaze prepared in Example 5. The soft-light surface glaze is applied by pouring glaze, and the amount of glaze applied is 350g / ㎡.

[0092] S5. Firing: The glazed brick blanks are fired at a temperature of 1180℃ for 27 minutes. After firing, the edges are ground to obtain velvety textured soft-gloss glazed tiles.

[0093] Example 9: A method for preparing a soft-light glazed tile with a velvety texture, comprising the following steps:

[0094] S1. Preparation of brick blanks: The powdered brick blanks are pressed into shape and dried in a drying kiln to obtain dried blanks; the dried blanks are then polished.

[0095] S2. Apply base glaze: Apply the first layer of soft-light base glaze prepared in Example 6 to the polished and dried blank. The application method of the soft-light base glaze is glazing by pouring, and the amount of glaze is 500g / ㎡.

[0096] S3. Apply protective glaze: After the first layer of soft-light base glaze has dried, apply the second layer of soft-light protective glaze prepared in Example 6. The soft-light protective glaze is applied by pouring glaze, and the amount of glaze applied is 350g / ㎡.

[0097] S3. Inkjet printing: After the second layer of soft-light protective glaze has dried, print the inkjet pattern on the second layer of soft-light protective glaze.

[0098] S5. Applying the surface glaze: Apply the third layer of soft-light surface glaze prepared in Example 6 to the inkjet pattern. The soft-light surface glaze is applied by pouring glaze, and the amount of glaze is 400g / ㎡.

[0099] S6. Firing: The glazed brick blank is fired at a temperature of 1210℃ for 35 minutes. After firing, the edges are ground to obtain a velvety textured soft-gloss glazed tile.

[0100] Example 10: A method for preparing a soft-light glazed tile with a velvety texture, comprising the following steps:

[0101] S1. Preparation of brick blanks: The powdered brick blanks are pressed into shape and dried in a drying kiln to obtain dried blanks; the dried blanks are then polished.

[0102] S2. Apply base glaze: Apply the first layer of soft-light base glaze prepared in Example 7 to the polished and dried blank. The application method of the soft-light base glaze is glazing by pouring, and the amount of glaze is 460g / ㎡.

[0103] S3. Apply protective glaze: After the first layer of soft-light base glaze has dried, apply the second layer of soft-light protective glaze prepared in Example 7. The soft-light protective glaze is applied by pouring glaze, and the amount of glaze applied is 320g / ㎡.

[0104] S3. Inkjet printing: After the second layer of soft-light protective glaze has dried, print the inkjet pattern on the second layer of soft-light protective glaze.

[0105] S5. Applying the surface glaze: Apply the third layer of soft-light surface glaze prepared in Example 7 to the inkjet pattern. The soft-light surface glaze is applied by pouring glaze, and the amount of glaze applied is 380g / ㎡.

[0106] S6. Firing: The glazed brick blank is fired at a temperature of 1200℃ for 30 minutes. After firing, the edges are ground to obtain a velvety textured soft-gloss glazed tile.

[0107] The following experiments illustrate the beneficial effects of this invention:

[0108] Example 1: A method for preparing a soft-light glazed tile with a velvety texture, comprising the following steps:

[0109] S1. Preparation of brick blanks: The powdered brick blanks are pressed into shape and dried in a drying kiln to obtain dried blanks; the dried blanks are then polished.

[0110] S2. Apply base glaze: Apply the first coat of soft-gloss base glaze to the polished and dried blank. The soft-gloss base glaze is applied by pouring glaze, and the amount of glaze is 430g / ㎡.

[0111] S3. Apply protective glaze: After the first coat of soft-light base glaze has dried, apply the second coat of soft-light protective glaze. The soft-light protective glaze is applied by pouring, and the amount of glaze is 350g / ㎡.

[0112] S3. Inkjet printing: After the second layer of soft-light protective glaze has dried, print the inkjet pattern on the second layer of soft-light protective glaze.

[0113] S5. Apply a third layer of soft-light glaze to the inkjet pattern. The soft-light glaze is applied by pouring, and the amount of glaze is 350g / ㎡.

[0114] S6. Firing: The glazed brick blank is fired at a temperature of 1190℃ for 27 minutes. After firing, the edges are ground to obtain a velvety textured soft-gloss glazed tile.

[0115] The material composition of the base glaze is as follows (all percentages are by mass):

[0116] Glaze ball clay: 8%, calcined kaolin: 7%, calcined alumina: 7%, calcined talc: 5%, wollastonite: 2%, quartz sand: 12%, zirconium silicate: 10%, calcined zinc oxide: 0.5%, albite: 16%, potassium feldspar: 32.5%;

[0117] The material composition of the protective glaze is as follows (all percentages are by mass):

[0118] Washed kaolin: 7%, titanium dioxide frit: 3%, calcined alumina: 6%, calcined talc: 5%, wollastonite: 1%, quartz sand: 9%, zirconium silicate: 4%, calcined zinc oxide: 2%, sodium feldspar: 30%, potassium feldspar: 33%; the titanium dioxide frit is supplied by Wanlian Technology, Suzhou Industrial Park.

[0119] The material composition of the surface glaze is as follows (all percentages are by mass):

[0120] Washed kaolin: 7%, calcined kaolin: 6%, water-milled ultrafine albite: 32%; strontium carbonate: 9%, calcined talc: 8%, dolomite powder: 10%, calcined zinc oxide: 6%, matte frit: 8%, smooth frit: 14%;

[0121] The matte frit material composition is as follows (all percentages by mass): alumina: 21%, silicon dioxide: 53%, sodium oxide: 3%, potassium oxide: 2%, calcium oxide: 8%, barium oxide: 8%, magnesium oxide: 5%; the soft frit material composition is as follows (all percentages by mass): alumina: 7%, cordierite powder: 5%, albite: 26%, potassium feldspar: 10%, strontium carbonate: 8%, talc: 8%, calcite: 7%, zinc oxide: 3%, barium carbonate: 6%, quartz sand: 20%.

[0122] The matte and soft-light frits are prepared by the following method: weigh each component raw material according to the formula, mix each component raw material evenly, calcine in a kiln to the molten state, the calcine time is 3 hours, the calcine temperature is 1380℃, after calcine, quench in cold water, and process into frits with a particle size of 2-3 mm.

[0123] The above-mentioned method for preparing a soft-light glaze with a velvety texture involves preparing both the base glaze and the top glaze using the following method: weigh each raw material according to the formula ratio and put them into a ball mill jar, add 28% water, 0.5% sodium tripolyphosphate, and 0.1% methylcellulose by weight of the glaze, and ball mill for 8.5 hours. The resulting glaze slurry has a residue of less than 0.5% on a 325-mesh sieve, a flow rate of 35 seconds, and a specific gravity of 1.83 g / ml.

[0124] The protective glaze is prepared by the following method: weigh each raw material according to the formula ratio and put them into a ball mill jar, add water (26% by weight of glaze), methylcellulose (0.07%), sodium tripolyphosphate (0.4%), and ball milling is carried out. The ball milling time is 9 hours. The glaze slurry obtained by ball milling has a residue of less than 0.5% on a 325-mesh sieve, a glaze slurry flow rate of 40 seconds, and a specific gravity of 1.86 g / ml.

[0125] After testing, the surface gloss of the bricks tested was 20-22°, with no pinholes, prickly heat or other defects. The surface was smooth, delicate and flat with a velvety texture. The maximum deformation of the bricks was less than 0.3mm, and the Mohs hardness reached 5.5.

[0126] Example 2: A method for preparing a soft-light glazed tile with a velvety texture, comprising the following steps:

[0127] S1. Preparation of brick blanks: The powdered brick blanks are pressed into shape and dried in a drying kiln to obtain dried blanks; the dried blanks are then polished.

[0128] S2. Apply base glaze: Apply the first coat of soft-gloss base glaze to the polished and dried blank. The soft-gloss base glaze is applied by pouring glaze, and the amount of glaze is 430g / ㎡.

[0129] S3. Apply protective glaze: After the first coat of soft-light base glaze has dried, apply the second coat of soft-light protective glaze. The soft-light protective glaze is applied by pouring, and the amount of glaze is 400g / ㎡.

[0130] S3. Inkjet printing: After the second layer of soft-light protective glaze has dried, print the inkjet pattern on the second layer of soft-light protective glaze.

[0131] S5. Apply a top coat of glaze: Apply a third coat of soft-light glaze to the inkjet pattern. The glaze is applied by pouring, and the amount of glaze is 400g / ㎡.

[0132] S6. Firing: The glazed brick blank is fired at a temperature of 1190℃ for 27 minutes. After firing, the edges are ground to obtain a velvety textured soft-gloss glazed tile.

[0133] The composition and preparation method of the first base glaze, the second soft-light protective glaze, and the third soft-light top glaze are the same as in Example 1. The difference is that the material composition of the second soft-light protective glaze is as follows (all are expressed as mass percentages):

[0134] Washed kaolin: 7%, calcined alumina: 6%, calcined talc: 6%, zirconium silicate: 7%, quartz sand: 9%, wollastonite: 2%, sodium feldspar: 30%, potassium feldspar: 33%. The calcined zinc oxide is replaced with calcined talc and wollastonite, and the titanium dioxide frit is replaced with zirconium silicate. The rest remain unchanged.

[0135] Tests showed that the surface gloss of the brick was 18-20°, with no pinholes, prickly heat, or other defects. The brick surface had a slight orange peel effect, the inkjet pattern was dark, the Mohs hardness was 5.5, and the maximum deformation of the brick was less than 0.25mm.

[0136] Example 3: A method for preparing a soft-light glazed tile with a velvety texture, comprising the following steps:

[0137] S1. Preparation of brick blanks: The powdered brick blanks are pressed into shape and dried in a drying kiln to obtain dried blanks; the dried blanks are then polished.

[0138] S2. Apply base glaze: Apply the first coat of soft-gloss base glaze to the polished and dried blank. The soft-gloss base glaze is applied by pouring glaze, and the amount of glaze is 430g / ㎡.

[0139] S3. Apply protective glaze: After the first coat of soft-light base glaze has dried, apply the second coat of soft-light protective glaze. The soft-light protective glaze is applied by pouring, and the amount of glaze is 400g / ㎡.

[0140] S3. Inkjet printing: After the second layer of soft-light protective glaze has dried, print the inkjet pattern on the second layer of soft-light protective glaze.

[0141] S5. Apply a third layer of soft-light glaze: Apply a third layer of soft-light glaze to the inkjet pattern. The soft-light glaze is applied by pouring, and the amount of glaze is 450g / ㎡.

[0142] S6. Firing: The glazed brick blank is fired at a temperature of 1190℃ for 27 minutes. After firing, the edges are ground to obtain a velvety textured soft-gloss glazed tile.

[0143] The composition and preparation method of the first base glaze, the second soft-light protective glaze, and the third soft-light top glaze are the same as in Example 1. The difference is that the material composition of the third soft-light top glaze is as follows (all are expressed as mass percentages):

[0144] Calcined kaolin: 4%, water-milled ultrafine albite: 34%, strontium carbonate: 9%, calcined talc: 8%, dolomite: 10%, calcined zinc oxide: 6%, matte frit: 8%, soft frit: 14%.

[0145] Tests showed that the surface gloss of the brick was 23-26°, with no pinholes or blemishes. The surface was smooth and had a velvety texture. The Mohs hardness was 5.5, and the maximum deformation of the brick was less than 0.3mm.

[0146] Example 4: A method for preparing a soft-light glazed tile with a velvety texture, comprising the following steps:

[0147] S1. Preparation of brick blanks: The powdered brick blanks are pressed into shape and dried in a drying kiln to obtain dried blanks; the dried blanks are then polished.

[0148] S2. Apply base glaze: Apply the first coat of soft-gloss base glaze to the polished and dried blank. The soft-gloss base glaze is applied by pouring glaze, and the amount of glaze is 430g / ㎡.

[0149] S3. Apply protective glaze: After the first coat of soft-light base glaze has dried, apply the second coat of soft-light protective glaze. The soft-light protective glaze is applied by pouring, and the amount of glaze is 400g / ㎡.

[0150] S3. Inkjet printing: After the second layer of soft-light protective glaze has dried, print the inkjet pattern on the second layer of soft-light protective glaze.

[0151] S5. Apply a top coat of glaze: Apply a third coat of soft-light glaze to the inkjet pattern. The glaze is applied by pouring, and the amount of glaze is 400g / ㎡.

[0152] S6. Firing: The glazed brick blank is fired at a temperature of 1190℃ for 27 minutes. After firing, the edges are ground to obtain a velvety textured soft-gloss glazed tile.

[0153] The composition and preparation method of the first base glaze, the second soft-light protective glaze, and the third soft-light top glaze are the same as in Example 1. The difference is that the material composition of the third soft-light top glaze is as follows (all are expressed as mass percentages):

[0154] Washed kaolin: 7%, calcined kaolin: 6%, water-milled ultrafine albite: 34%, strontium carbonate: 9%, calcined talc: 7%, dolomite: 8%, calcined zinc oxide: 5%, matte frit: 8%, soft-look frit: 16%.

[0155] Tests showed that the surface gloss of the brick was 25-28°, with no pinholes, prickly heat, or other defects. However, the surface texture was not smooth enough, and the reflectivity was strong. The Mohs hardness reached 5, and the maximum deformation of the brick was less than 0.3mm.

[0156] Comparative Example 1: The preparation method of a soft-gloss glazed tile with a velvety texture in this comparative example is the same as that in Example 1. The difference between the comparative example and Example 1 is that the third soft-gloss glaze in the comparative example replaces 9% strontium carbonate in Example 1 with 5% barium carbonate.

[0157] Tests showed that the surface gloss of the bricks in this comparison was 24-26°, the surface had a lot of orange peel texture, the texture was not smooth enough, and there were a few pinholes. The Mohs hardness was 4, and the brick deformation was less than 0.3mm.

[0158] Comparative Example 2: The preparation method of a soft-light glazed tile with a velvety texture in this comparative example is the same as that in Example 1. The difference between the comparative example and Example 1 is that the third soft-light glaze in the comparative example replaces all the soft-light frit in Example 1 with ultrafine water-polished albite.

[0159] Tests showed that the surface gloss of the bricks in this comparison was 25-28°, the number of pinholes in the glaze was significantly increased, the orange peel effect was severe, the glaze texture was rough and not delicate enough, the Mohs hardness reached 4, and the maximum deformation of the brick was greater than 0.6mm.

[0160] Comparative Example 3: This comparative example describes a method for preparing a velvety textured soft-light glazed tile, which is based on Example 1. The difference from Example 1 is that the third layer of the soft-light glaze in this comparative example involves directly adding the soft-light frit from Example 1 in the form of raw materials according to the component ratio to prepare the soft-light glaze. (That is, the frit components are not mixed, calcined to a molten state, and then quenched to form frit).

[0161] Tests showed that the surface gloss of the bricks in this comparison sample was 20-23°, the glaze had many pinholes and a rough texture, the Mohs hardness was 4.5, and the maximum deformation of the bricks was greater than 0.6mm.

[0162] Comparative Example 4: The preparation method of a soft-light glazed tile with a velvety texture in this comparative example is the same as that in Example 1. The difference between the comparative example and Example 1 is that the third layer of soft-light glaze in the comparative example is to replace all the matte frit in Example 1 with soft frit, that is, the soft frit is 22%.

[0163] Tests showed that the surface gloss of the brick in this comparison sample was 28-32°, the glaze had a few pinholes and a slight orange peel texture, the glaze had a bright gloss, the Mohs hardness was 4, and the maximum deformation of the brick was less than 0.3mm.

[0164] Comparative Example 5: The preparation method of a soft-light glazed tile with a velvety texture in this comparative example is the same as that in Example 1. The difference between the comparative example and Example 1 is that the second soft-light protective glaze is not applied. After applying the first soft-light base glaze, the inkjet pattern is printed directly and then the soft-light surface glaze is applied.

[0165] Tests showed that the surface gloss of the bricks in this comparison was 20-23°, the glaze had severe orange peel texture, the inkjet pattern colors were not bright enough and the tone was dark, the Mohs hardness was 5, and the brick deformation was greater than 0.7mm.

[0166] In summary, compared with Comparative Example 1, Example 1 uses more strontium carbonate and thus does not use barium carbonate, which greatly improves the gloss properties of the glaze, enabling it to achieve a smooth and delicate velvety texture. It also increases the hardness of the glaze, making it more wear-resistant and durable.

[0167] As can be seen from Comparative Examples 2, 3, and 4, the combination of two types of frit in these examples can effectively control the glaze quality, making it less susceptible to fluctuations in kiln temperature that could affect the glaze texture. It can also effectively control the brick shape. The soft-light frit can enhance the smooth and delicate texture of the glaze, while the matte frit can better control its glaze gloss, achieving a high-quality velvety texture glaze of 18-25°. Furthermore, as can be seen from Examples 2 and 5, the introduction of titanium dioxide frit in the second protective glaze can significantly improve the whiteness of the brick surface, and the introduction of zinc oxide can improve the color development of inkjet patterns. Moreover, this protective glaze layer can greatly reduce the deformation of the brick.

[0168] As can be seen from Examples 3 and 4, the soft-light glazed tile with a velvety texture of the present invention mainly achieves its smooth and delicate texture by calcining alkaline earth metal raw materials such as talc, dolomite, strontium carbonate, and zinc oxide through their crystallization effect. It can also control its glaze gloss by calcining kaolin at high temperature, making the product easy to adjust the gloss to 18-25°, so that it can achieve the best velvety texture glaze effect within this range.

[0169] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, are covered within the scope of protection of the present invention.

Claims

1. A soft-gloss glaze with a velvety texture, characterized in that, The glazes, from bottom to top, are base glaze, protective glaze, and top glaze; The base glaze comprises the following raw materials in parts by weight: Glaze ball clay: 8-10, calcined kaolin: 6-8, calcined alumina: 6-7, calcined talc: 4-5, wollastonite: 2-3, quartz sand: 10-14, zirconium silicate: 8-13, calcined zinc oxide: 0.3-0.8, albite: 15-20, potassium feldspar: 32-40; The protective glaze comprises the following raw materials in parts by weight: Washed kaolin: 5-8, titanium dioxide frit: 3-5, calcined alumina: 6-8, calcined talc: 4-6, wollastonite: 1-2, quartz sand: 8-11, zirconium silicate: 3-5, calcined zinc oxide: 2-3, sodium feldspar: 28-36, potassium feldspar: 30-35; The surface glaze comprises the following raw materials in parts by weight: Washed kaolin: 6-8, calcined kaolin: 4-6, water-milled ultrafine albite: 30-35, strontium carbonate: 9-11, calcined talc: 8-10, dolomite powder: 9-11, calcined zinc oxide: 5-7, matte frit: 7-9, smooth frit: 10-15; wherein, the particle size of the water-milled ultrafine albite is less than 1.5% after passing through a 250-mesh sieve; The matte frit is composed of the following raw materials in parts by weight: alumina: 18-30, silicon dioxide: 48-58, sodium oxide: 1-5, potassium oxide: 1-4, calcium oxide: 4-12, barium oxide: 5-15, magnesium oxide: 2-7; the soft-light frit is composed of the following raw materials in parts by weight: alumina: 3-12, cordierite powder: 3-7, albite: 20-30, potassium feldspar: 5-14, strontium carbonate: 5-12, talc: 5-12, calcite: 4-10, zinc oxide: 1-5, barium carbonate: 3-9, quartz sand: 15-25.

2. The soft-gloss glaze with a velvety texture according to claim 1, characterized in that, The base glaze comprises the following raw materials in parts by weight: Glaze ball clay: 8, calcined kaolin: 7, calcined alumina: 7, calcined talc: 5, wollastonite: 2, quartz sand: 12, zirconium silicate: 10, calcined zinc oxide: 0.5, sodium feldspar: 16, potassium feldspar: 32.5; The protective glaze comprises the following raw materials in parts by weight: Washed kaolin: 7, titanium dioxide frit: 3, calcined alumina: 6, calcined talc: 5, wollastonite: 1, quartz sand: 9, zirconium silicate: 4, calcined zinc oxide: 2, sodium feldspar: 30, potassium feldspar: 33; The surface glaze comprises the following raw materials in parts by weight: Washed kaolin: 7, calcined kaolin: 6, water-milled ultrafine albite: 32; strontium carbonate: 9, calcined talc: 8, dolomite powder: 10, calcined zinc oxide: 6, matte frit: 8, soft-look frit: 14; The matte frit is composed of the following raw materials in parts by weight: alumina: 21, silicon dioxide: 53, sodium oxide: 3, potassium oxide: 2, calcium oxide: 8, barium oxide: 8, magnesium oxide: 5; the soft-light frit is composed of the following raw materials in parts by weight: alumina: 7, cordierite powder: 5, albite: 26, potassium feldspar: 10, strontium carbonate: 8, talc: 8, calcite: 7, zinc oxide: 3, barium carbonate: 6, quartz sand:

20.

3. The soft-gloss glaze with a velvety texture according to claim 1, characterized in that, The matte and soft-light frits are prepared by the following method: weigh each component raw material according to the formula, mix each component raw material evenly, and calcine in a kiln to the molten state. The calcination time is 2.5 to 3.5 hours and the calcination temperature is 1340 to 1460°C. After calcination, the material is quenched in cold water and then processed into frits with a particle size of 2 to 3 mm.

4. The method for preparing a velvety textured soft-light glaze according to claim 1, characterized in that, The base glaze, protective glaze, and top glaze are all prepared using the following method: each raw material is weighed according to the formula ratio and put into a ball mill jar. Water, methylcellulose, and sodium tripolyphosphate (25-35% by weight of the glaze) are added and ball milled for 7-9 hours. The glaze slurry obtained by ball milling has a residue of less than 0.5% on a 325-mesh sieve, a flow rate of 30-45 seconds, and a specific gravity of 1.80-1.88 g / ml.

5. The method for preparing a velvety-textured soft-light glaze according to claim 4, characterized in that, When preparing the base glaze and top glaze, the amount of methylcellulose added is 0.07 to 0.1 parts by weight, and the amount of sodium tripolyphosphate added is 0.3 to 0.7 parts by weight.

6. The method for preparing a velvety textured soft-light glaze according to claim 4, characterized in that, When preparing the protective glaze, the amount of methylcellulose added is 0.05 to 0.12 parts by weight, and the amount of sodium tripolyphosphate added is 0.2 to 0.5 parts by weight.

7. A method for preparing a soft-light glazed tile with a velvety texture, characterized in that, Includes the following steps: S1. Preparation of brick blanks: The powdered brick blanks are pressed into shape and dried in a drying kiln to obtain dried blanks; the dried blanks are then polished. S2. Applying the base glaze: Apply the first coat of soft-gloss base glaze to the polished and dried fabric. The base glaze is applied by pouring, with an application rate of 400-500 g / m². The base glaze comprises the following raw materials by weight: Glaze ball clay: 8-10, calcined kaolin: 6-8, calcined alumina: 6-7, calcined talc: 4-5, wollastonite: 2-3, quartz sand: 10-14, zirconium silicate: 8-13, calcined zinc oxide: 0.3-0.8, albite: 15-20, potassium feldspar: 32-40; S3. Apply protective glaze: After the first coat of soft-gloss base glaze has dried, apply the second coat of soft-gloss protective glaze. The glaze is applied by pouring, with an application rate of 300-350 g / m². The protective glaze comprises the following raw materials by weight: Washed kaolin: 5-8, titanium dioxide frit: 3-5, calcined alumina: 6-8, calcined talc: 4-6, wollastonite: 1-2, quartz sand: 8-11, zirconium silicate: 3-5, calcined zinc oxide: 2-3, sodium feldspar: 28-36, potassium feldspar: 30-35; S4. Applying the Surface Glaze: After the second coat of soft-light protective glaze has dried, apply the third coat of soft-light surface glaze. The soft-light surface glaze is applied by pouring, with an application rate of 350-400 g / m². The surface glaze comprises the following raw materials by weight: Washed kaolin: 6-8, calcined kaolin: 4-6, water-milled ultrafine albite: 30-35, strontium carbonate: 9-11, calcined talc: 8-10, dolomite powder: 9-11, calcined zinc oxide: 5-7, matte frit: 7-9, smooth frit: 10-15; wherein, the particle size of the water-milled ultrafine albite is less than 1.5% after passing through a 250-mesh sieve; The matte frit is composed of the following raw materials in parts by weight: alumina: 18-30, silicon dioxide: 48-58, sodium oxide: 1-5, potassium oxide: 1-4, calcium oxide: 4-12, barium oxide: 5-15, magnesium oxide: 2-7; the soft-light frit is composed of the following raw materials in parts by weight: alumina: 3-12, cordierite powder: 3-7, albite: 20-30, potassium feldspar: 5-14, strontium carbonate: 5-12, talc: 5-12, calcite: 4-10, zinc oxide: 1-5, barium carbonate: 3-9, quartz sand: 15-25. S5. Firing: The glazed brick blanks are fired at a temperature of 1180-1210℃ for 27-35 minutes. After firing, the edges are ground to obtain velvety textured soft-gloss glazed tiles.

8. The method for preparing a velvety textured soft-light glazed tile according to claim 7, characterized in that, Step S3 is followed by the step of printing an inkjet pattern, and after that, a third layer of soft-light glaze is applied to the inkjet pattern.