Jun glaze suitable for sanitary porcelain process and preparation method thereof

Abstract

The application relates to the technical field of sanitary ceramics, in particular to a jun glaze suitable for sanitary ceramic technology and a preparation method thereof. The jun glaze suitable for sanitary ceramic technology comprises a base glaze and a surface glaze, the base glaze comprises the following raw materials: potassium feldspar, kaolin, quartz powder, calcined talc, calcite, zinc oxide, spodumene, fused block, iron oxide and manganese oxide; the surface glaze comprises the following raw materials: potassium feldspar, sodium feldspar, quartz powder, kaolin, calcite, zinc oxide, wollastonite and zirconium silicate; according to the principle that similar substances can be dissolved together, most of the raw material components of the base glaze and the surface glaze are the same, the raw materials of the base glaze and the surface glaze are fused, diffused and migrated at high temperature, so that double-layer different colors are formed, part of the raw materials are fused together to form beautiful stripes, the stripes are not overlapped, are lively and natural, have strong stereoscopic effect, and the effect is gorgeous and bright.

Description

Technical Field

[0001] This application relates to the field of sanitary ceramics technology, and in particular to a Jun glaze suitable for sanitary ceramics processing and its preparation method. Background Technology

[0002] Sanitary ceramics are glazed ceramic products used in places such as bathrooms, kitchens, and laboratories. They are also known as sanitary ware. When purchasing, different materials and properties can be selected according to different usage environments. With the continuous improvement and development of living standards, the production capacity and output of my country's sanitary ceramics industry are constantly increasing, and the domestic market demand is large. At the same time, the performance requirements for sanitary ceramics are also getting higher and higher.

[0003] For a long time, sanitary ceramics have almost exclusively used zirconium white opaque glaze, resulting in a very monotonous color palette. In recent years, other colors such as matte black and matte gray have emerged, but existing processes cannot effectively control the patterns to be achieved. Traditional ceramics typically use a single layer of glaze or a single layer of reactive glaze for coloring, leading to limited color variety and significant color differences, making the ceramic products aesthetically unappealing. Summary of the Invention

[0004] The purpose of this application is to address the shortcomings of current technology by providing a Jun glaze suitable for sanitary ware production and its preparation method.

[0005] Firstly, the Jun glaze and its preparation method applicable to sanitary ware manufacturing provided in this application adopt the following technical solution:

[0006] A Jun glaze suitable for sanitary ware manufacturing, the Jun glaze comprising a base glaze and a top glaze, the base glaze comprising the following raw materials in parts by weight: 12-18 parts potassium feldspar, 5-9 parts kaolin, 25-32 parts quartz powder, 1-3 parts calcined talc, 13-17 parts calcite, 1-3 parts zinc oxide, 4-8 parts spodumene, 13-18 parts frit, 3-7 parts iron oxide, and 2-4 parts manganese oxide;

[0007] The surface glaze comprises the following raw materials in parts by weight: 24-30 parts potassium feldspar, 3-8 parts sodium feldspar, 23-28 parts quartz powder, 8-12 parts kaolin, 13-17 parts calcite, 2-4 parts zinc oxide, 3-5 parts wollastonite, and 6-10 parts zirconium silicate.

[0008] The Jun glaze utilizes the similar compatibility properties of the base glaze and the top glaze to prepare a two-color glaze, and forms stripes through high-temperature melting.

[0009] Preferably, the Jun glaze includes a base glaze and a top glaze. The base glaze includes the following raw materials in parts by weight: 15 parts potassium feldspar, 7 parts kaolin, 28 parts quartz powder, 2 parts calcined talc, 15 parts calcite, 2 parts zinc oxide, 6 parts spodumene, 15 parts frit, 5 parts iron oxide, and 3 parts manganese oxide.

[0010] The surface glaze comprises the following raw materials in parts by weight: 26 parts potassium feldspar, 5 parts sodium feldspar, 25 parts quartz powder, 10 parts kaolin, 15 parts calcite, 3 parts zinc oxide, 4 parts wollastonite, and 8 parts zirconium silicate.

[0011] The Jun glaze utilizes the similar compatibility properties of the base glaze and the top glaze to prepare a two-color glaze, and forms stripes through high-temperature melting.

[0012] By employing the above technical solutions, calcined talc can be used to improve the condensation and adhesion of the glaze, while also acting as a filler to smooth out surface particles and capillaries. Potassium feldspar, containing potassium and sodium, acts as a flux, shortening firing time, increasing glaze transmittance, and enhancing the bond between the body and glaze. Calcite primarily functions as a flux, increasing the glaze's hardness, wear resistance, and corrosion resistance, lowering its melting temperature, increasing gloss and transparency, and preventing glaze cracking and buildup. Quartz powder increases the glaze's melting temperature and viscosity, widens its melting temperature range, reduces its fluidity, decreases its coefficient of thermal expansion, and improves its mechanical strength, hardness, wear resistance, and chemical corrosion resistance. Furthermore, quartz can be melted with readily fusible substances such as CaO, Na₂O, K₂O, and MgO to form transparent quartz glass, resulting in a bright glaze surface and enhanced gloss. Zinc oxide, an inorganic oxide, increases the sintering temperature of the glaze, lowers its coefficient of thermal expansion, and increases the hardness and toughness of ceramic products. Spodumene increases the fluidity, solubility, and transparency of glazes at high temperatures, giving them better erosion resistance. The frit primarily acts as a catalyst and increases the cooling rate of the glaze, effectively shortening the sintering time and ensuring the glaze's solubility and transparency. Zirconium silicate improves the hardness and wear resistance of the glaze layer. Iron oxide and manganese oxide are red and black colorants, adding different colors and textures to glazes and ceramic products. Furthermore, the reasonable proportions of the components in the above formula fully utilize their unique effects, comprehensively improving the hardness, transparency, and toughness of ceramic products. This allows for the preparation of dual-color glazes using the principle of similar solubility between the base glaze and top glaze, forming color stripes on the glaze surface through high-temperature melting, resulting in beautifully colored and artistic porcelain products.

[0013] Secondly, this application provides a method for preparing Jun glaze suitable for sanitary ware manufacturing, employing the following technical solution:

[0014] A method for preparing Jun glaze suitable for sanitary ware manufacturing, using the aforementioned raw materials for Jun glaze suitable for sanitary ware manufacturing, includes the following steps:

[0015] S1 Preparation of base glaze slurry: According to the mass fraction, potassium feldspar, kaolin, quartz powder, calcined talc, calcite, zinc oxide, spodumene, frit, iron oxide and manganese oxide are loaded into a ball mill, and an appropriate amount of water is added to wet grind until the particle size is <325 mesh. The slurry is then discharged from the mill and screened to remove iron to make a mud slurry for later use.

[0016] S2 Preparation of surface glaze slurry: According to the mass fraction, potassium feldspar, sodium feldspar, quartz powder, kaolin, calcite, zinc oxide, wollastonite and zirconium silicate are loaded into a ball mill, and an appropriate amount of water is added to wet grind until the particle size is <325 mesh. The slurry is discharged from the mill and then screened and iron removed to make a mud slurry for later use.

[0017] S3 spraying base glaze and top glaze: First, spray a layer of base glaze onto the sanitary ceramic blank, and then spray a layer of top glaze.

[0018] S4 firing: The sanitary ceramic blanks coated with base glaze and top glaze are loaded into the kiln for firing to obtain sanitary ceramic Jun glaze products.

[0019] Preferably, in step S1, the performance parameters of the slurry prepared as the base glaze are: specific gravity of 1.745 kg / L-1.755 kg / L and viscosity of 120-140 seconds / 100 mL.

[0020] Preferably, in step S1, when preparing the base glaze slurry, the sieving is controlled to be 325 mesh, and the sieve residue is 0.1-0.3%.

[0021] Preferably, in step S2, when preparing the glaze slurry, the performance parameters of the slurry are: specific gravity of 1.650 kg / L-1.700 kg / L and viscosity of 80-100 seconds / 100 mL.

[0022] Preferably, in step S2, when preparing the surface glaze slurry, the sieving is controlled to be 325 mesh, with a sieve residue of 0.1-0.2%.

[0023] Preferably, in the S3 spraying of the base glaze and top glaze, the spraying is pressure spraying using automated spraying equipment, with the base glaze spraying air pressure being 0.65-0.75 MPa and the base glaze spraying air pressure being 0.55-0.65 MPa.

[0024] Preferably, in the S3 spraying of the base glaze and the top glaze, the thickness of the base glaze is 0.6-0.8 mm, and the thickness of the top glaze is 0.2 mm-0.3 mm.

[0025] Preferably, in step S4 firing, the firing process is as follows: heating from room temperature to 1220-1240℃ at a heating rate of 110-130℃ / h and holding at that temperature for 2-3 hours, then cooling to room temperature to obtain sanitary ceramic Jun glaze product.

[0026] By adopting the above technical solution and using pressure spray glazing, the water absorption of the body during the glazing process is reduced, glaze flow is decreased, and glazing efficiency is improved, which is beneficial to maintaining the strength of the glazed body. The adhesion of the base glaze layer to the body is also greatly enhanced. The base glaze can also fill the pores and pinholes on the surface of ceramic products, increasing their density, smoothness, and color. Since most of the raw material components of the base glaze and the top glaze are the same, according to the principle of "like dissolves like," at high temperatures, the raw materials of the base glaze and the top glaze will melt, diffuse, and migrate, thus forming two different colors, while some raw materials melt together to form beautiful stripes.

[0027] In summary, the beneficial technical effects of this application are as follows:

[0028] This application, through the reasonable combination of various raw materials, utilizes the fact that most of the raw material components of the base glaze and the top glaze are the same. According to the principle of like dissolves like, at high temperature, the raw materials of the base glaze and the top glaze will melt, diffuse, and migrate, thereby forming two different colors. At the same time, some raw materials melt together to form beautiful stripes. The stripes do not overlap, are vivid and natural, have a strong three-dimensional effect, and the effect is gorgeous and bright. Detailed Implementation

[0029] The embodiments and preparation examples of this application will be described in detail below. However, those skilled in the art will understand that the following embodiments and preparation examples are for illustrative purposes only and should not be considered as limiting the scope of this application. Unless otherwise specified in the embodiments and preparation examples, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments whose manufacturers are not specified are all commercially available conventional products.

[0030] Example 1

[0031] A Jun glaze suitable for sanitary porcelain manufacturing process includes a base glaze and a top glaze. The base glaze includes the following raw materials in parts by weight: 12 parts potassium feldspar, 5 parts kaolin, 25 parts quartz powder, 1 part calcined talc, 13 parts calcite, 1 part zinc oxide, 4 parts spodumene, 13 parts frit, 3 parts iron oxide, and 2 parts manganese oxide.

[0032] The surface glaze comprises the following raw materials in parts by weight: 24 parts potassium feldspar, 3 parts sodium feldspar, 23 parts quartz powder, 8 parts kaolin, 13 parts calcite, 2 parts zinc oxide, 3 parts wollastonite, and 6 parts zirconium silicate.

[0033] Jun glaze utilizes the similar compatibility of the base glaze and the top glaze to prepare a two-color glaze, and forms beautiful stripes through high-temperature melting.

[0034] Example 2

[0035] A Jun glaze suitable for sanitary porcelain manufacturing process includes a base glaze and a top glaze. The base glaze includes the following raw materials in parts by weight: 18 parts potassium feldspar, 9 parts kaolin, 32 parts quartz powder, 3 parts calcined talc, 17 parts calcite, 3 parts zinc oxide, 8 parts spodumene, 18 parts frit, 7 parts iron oxide, and 4 parts manganese oxide.

[0036] The surface glaze comprises the following raw materials in parts by weight: 30 parts potassium feldspar, 8 parts sodium feldspar, 28 parts quartz powder, 12 parts kaolin, 17 parts calcite, 4 parts zinc oxide, 5 parts wollastonite, and 10 parts zirconium silicate.

[0037] Jun glaze utilizes the similar compatibility of the base glaze and the top glaze to prepare a two-color glaze, and forms beautiful stripes through high-temperature melting.

[0038] Example 3

[0039] A Jun glaze suitable for sanitary porcelain manufacturing process, comprising a base glaze and a top glaze, wherein the base glaze comprises the following raw materials in parts by weight: 15 parts potassium feldspar, 7 parts kaolin, 28 parts quartz powder, 2 parts calcined talc, 15 parts calcite, 2 parts zinc oxide, 6 parts spodumene, 15 parts frit, 5 parts iron oxide, and 3 parts manganese oxide.

[0040] The surface glaze consists of the following raw materials in parts by weight: 26 parts potassium feldspar, 5 parts sodium feldspar, 25 parts quartz powder, 10 parts kaolin, 15 parts calcite, 3 parts zinc oxide, 4 parts wollastonite, and 8 parts zirconium silicate.

[0041] Jun glaze utilizes the similar compatibility of the base glaze and the top glaze to prepare a two-color glaze, and forms beautiful stripes through high-temperature melting.

[0042] Preparation Example 1

[0043] A method for preparing Jun glaze suitable for sanitary ware manufacturing, using the raw materials in the mass proportions of Example 1, includes the following steps:

[0044] S1 Preparation of Base Glaze Slurry: 12 kg of potassium feldspar, 5 kg of kaolin, 25 kg of quartz powder, 1 kg of calcined talc, 13 kg of calcite, 1 kg of zinc oxide, 4 kg of spodumene, 13 kg of frit, 3 kg of iron oxide, and 2 kg of manganese oxide are loaded into a ball mill. A suitable amount of water is added, and the mixture is wet-milled until the particle size is <325 mesh. The slurry is then discharged from the mill and sieved through a 325-mesh sieve. The residue is 0.1%, removing iron and preparing a slurry for later use. The slurry's performance parameters are: specific gravity 1.745 kg / L, viscosity 120... S2 Preparation of surface glaze slurry: 24 kg of potassium feldspar, 3 kg of sodium feldspar, 23 kg of quartz powder, 8 kg of kaolin, 13 kg of calcite, 2 kg of zinc oxide, 3 kg of wollastonite and 6 kg of zirconium silicate are loaded into a ball mill, and an appropriate amount of water is added to wet grind until the particle size is <325 mesh. The slurry is then discharged from the mill and sieved through a 325 mesh sieve. The sieve residue is 0.1%, and iron is removed to prepare a slurry for later use. The performance parameters of the slurry are: specific gravity is 1.650 kg / L, viscosity is 80 seconds / 100 mL;

[0045] S3 Spraying of Base Glaze and Top Glaze: First, an automatic spraying equipment is used to spray a layer of base glaze onto the sanitary ceramic blank under pressure. The air pressure for spraying the base glaze is 0.65MPa, and the thickness of the base glaze is 0.6mm. Then, an automatic spraying equipment is used to spray a layer of top glaze under pressure. The air pressure for spraying the top glaze is 0.55MPa, and the thickness of the top glaze is 0.3mm.

[0046] S4 firing: The sanitary ceramic blanks coated with base glaze and top glaze are loaded into the kiln for firing. The process is as follows: the temperature is raised from room temperature to 1220℃ at a rate of 110℃ / h and held for 3 hours, then cooled to room temperature to obtain the sanitary ceramic Jun glaze product.

[0047] The sanitary ceramic Jun glaze product prepared in this example has beautiful stripes on its surface, the stripes do not overlap, they are vivid and natural, have a strong three-dimensional effect, and the effect is bright and beautiful.

[0048] Preparation Example 2

[0049] A method for preparing Jun glaze suitable for sanitary ware manufacturing, using the raw materials in the mass proportions of Example 1, includes the following steps:

[0050] S1 Preparation of Base Glaze Slurry: 18 kg of potassium feldspar, 9 kg of kaolin, 32 kg of quartz powder, 3 kg of calcined talc, 17 kg of calcite, 3 kg of zinc oxide, 8 kg of spodumene, 18 kg of frit, 7 kg of iron oxide, and 4 kg of manganese oxide are loaded into a ball mill. A suitable amount of water is added, and the mixture is wet-milled until the particle size is <325 mesh. The slurry is then discharged from the mill and sieved through a 325-mesh sieve. The residue is 0.3%, removing iron and preparing a slurry for later use. The slurry's performance parameters are: specific gravity 1.755 kg / L, viscosity 140 seconds / ... 100mL; S2 Preparation of surface glaze slurry: Put 30kg of potassium feldspar, 8kg of sodium feldspar, 28kg of quartz powder, 12kg of kaolin, 17kg of calcite, 4kg of zinc oxide, 5kg of wollastonite and 10kg of zirconium silicate into a ball mill, add an appropriate amount of water and wet grind until the particle size is <325 mesh, discharge the slurry from the mill, and then sieve it through a 325 mesh sieve. The sieve residue is 0.2%, and the iron is removed to make mud for later use. The performance parameters of the mud are: specific gravity is 1.700kg / L, viscosity is 100 seconds / 100mL;

[0051] S3 Spraying of Base Glaze and Top Glaze: First, an automatic spraying equipment is used to spray a layer of base glaze onto the sanitary ceramic blank under pressure. The air pressure for spraying the base glaze is 0.75MPa, and the thickness of the base glaze is 0.8mm. Then, an automatic spraying equipment is used to spray a layer of top glaze under pressure. The air pressure for spraying the top glaze is 0.65MPa, and the thickness of the top glaze is 0.2mm.

[0052] S4 firing: The sanitary ceramic blanks coated with base glaze and top glaze are loaded into the kiln for firing. The process is as follows: the temperature is raised from room temperature to 1240℃ at a rate of 130℃ / h and held for 2 hours, then cooled to room temperature to obtain the sanitary ceramic Jun glaze product.

[0053] The sanitary ceramic Jun glaze product prepared in this example has beautiful stripes on its surface, the stripes do not overlap, they are vivid and natural, have a strong three-dimensional effect, and the effect is bright and beautiful.

[0054] Preparation Example 3

[0055] A method for preparing Jun glaze suitable for sanitary ware manufacturing, using the raw materials in the mass proportions of Example 1, includes the following steps:

[0056] S1 Preparation of Base Glaze Slurry: 15 kg of potassium feldspar, 7 kg of kaolin, 28 kg of quartz powder, 2 kg of calcined talc, 15 kg of calcite, 2 kg of zinc oxide, 6 kg of spodumene, 15 kg of frit, 5 kg of iron oxide, and 3 kg of manganese oxide are loaded into a ball mill. A suitable amount of water is added, and the mixture is wet-milled until the particle size is <325 mesh. The slurry is then discharged from the mill and sieved through a 325-mesh sieve. The residue is 0.2%, removing iron and preparing a slurry for later use. The slurry's performance parameters are: specific gravity 1.750 kg / L, viscosity 130 seconds... / 100mL; S2 Preparation of surface glaze slurry: Put 26kg of potassium feldspar, 5kg of sodium feldspar, 25kg of quartz powder, 10kg of kaolin, 15kg of calcite, 3kg of zinc oxide, 4kg of wollastonite and 8kg of zirconium silicate into a ball mill, add an appropriate amount of water and wet grind until the particle size is <325 mesh, discharge the slurry from the mill, and then sieve it through a 325 mesh sieve. The sieve residue is 0.15%, and the iron is removed to make mud for later use. The performance parameters of the mud are: specific gravity is 1.680kg / L, viscosity is 90 seconds / 100mL;

[0057] S3 Spraying of base glaze and top glaze: First, an automatic spraying equipment is used to spray a layer of base glaze onto the sanitary ceramic blank under pressure. The air pressure for spraying the base glaze is 0.70MPa and the thickness of the base glaze is 0.7mm. Then, an automatic spraying equipment is used to spray a layer of top glaze under pressure. The air pressure for spraying the top glaze is 0.60MPa and the thickness of the top glaze is 0.25mm.

[0058] S4 firing: The sanitary ceramic blanks coated with base glaze and top glaze are loaded into the kiln for firing. The process is as follows: the temperature is raised from room temperature to 1230℃ at a rate of 120℃ / h and held for 2.5h, then cooled to room temperature to obtain the sanitary ceramic Jun glaze product.

[0059] The sanitary ceramic Jun glaze product prepared in this example has beautiful stripes on its surface. The stripes do not overlap, are vivid and natural, have a strong three-dimensional effect, and have a bright and beautiful effect.

[0060] Performance testing

[0061] Samples were taken from the preparation examples 1-3 and tested. The test results are shown in Table 1.

[0062] Compressive strength: determined according to GB / T 8488-2008 "Test Method for Compressive Strength of Ceramic Products".

[0063] Water absorption rate: The ceramic sample is completely immersed in water, boiled for 2 hours, then soaked for another 20 hours. After immersion, the sample is removed, wiped dry with a clean cloth, and weighed. The sample is then placed in an oven to dry until its weight no longer changes. The sample is then weighed again, and the water absorption rate is calculated. Water absorption rate = (weight after drying - dry weight) / dry weight × 100%.

[0064] Crack resistance: Tested according to GB / T 3810.11-2016 Ceramic Tile Test Methods Part 11: Determination of glaze crack resistance of glazed tiles.

[0065] Gloss: The gloss of ceramics is measured by testing each sample individually under 60° geometric conditions using a gloss meter. The instrument emits a beam of light onto the ceramic surface, measures the amount of reflected light, and then displays the result as a value. Generally, the higher the value, the better the gloss.

[0066] Table 1

[0067] Compressive strength / MPa Water absorption rate / % Gloss / GU Anti-cracking Preparation Example 1 75 0.2 93 The glaze does not crack at 160℃. Preparation Example 2 77 0.15 95 The glaze does not crack at 160℃. Preparation Example 3 81 0.11 98 The glaze does not crack at 160℃.

[0068] As shown in Table 1, the compressive strength of the sanitary ceramic Jun glaze products prepared in Examples 1-3 is 75-81 MPa, indicating relatively high surface compressive strength; the water absorption rate is 0.11-0.21%, indicating low water absorption, fine and dense glaze surface, and no pores; the gloss is 93-98 GU, indicating smooth glaze surface, no obvious defects such as pores, and high refractive index; it is crack resistant, and the glaze surface does not crack at 160℃, indicating good thermal stability of the glaze surface.

[0069] The above embodiments and preparation examples are only used to explain the technical solutions of the present invention and not to limit it. Although the above embodiments and preparation examples have specifically described the present invention, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications and equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A method for preparing a sanitary ceramic Jun glaze product, characterized in that, The sanitary ceramic Jun glaze product is made using Jun glaze, which includes a base glaze and a top glaze. Jun glaze utilizes the similar compatibility properties of the base glaze and the top glaze to prepare a two-color glaze, and forms stripes through melting. The base glaze comprises the following raw materials in parts by weight: 12-18 parts potassium feldspar, 5-9 parts kaolin, 25-32 parts quartz powder, 1-3 parts calcined talc, 13-17 parts calcite, 1-3 parts zinc oxide, 4-8 parts spodumene, 13-18 parts frit, 3-7 parts iron oxide, and 2-4 parts manganese oxide. The surface glaze comprises the following raw materials in parts by weight: 24-30 parts potassium feldspar, 3-8 parts sodium feldspar, 23-28 parts quartz powder, 8-12 parts kaolin, 13-17 parts calcite, 2-4 parts zinc oxide, 3-5 parts wollastonite, and 6-10 parts zirconium silicate. The preparation method of the sanitary ceramic glaze product includes the following steps: S1 Preparation of base glaze slurry: Potassium feldspar, kaolin, quartz powder, calcined talc, calcite, zinc oxide, spodumene, frit, iron oxide, and manganese oxide are loaded into a ball mill according to mass fractions. An appropriate amount of water is added, and the mixture is wet-milled until the particle size is <325 mesh. The slurry is then discharged from the mill and sieved to remove iron, resulting in a slurry for later use. The performance parameters of the slurry are: specific gravity 1.745 kg / L-1.755 kg / L, viscosity 120-140 seconds / 100 mL; the sieving is performed through a 325 mesh sieve, with a sieve residue of 0.1-0.3%. S2 Preparation of Surface Glaze Slurry: Potassium feldspar, sodium feldspar, quartz powder, kaolin, calcite, zinc oxide, wollastonite, and zirconium silicate are loaded into a ball mill according to the specified mass fractions. An appropriate amount of water is added, and the mixture is wet-milled until the particle size is <325 mesh. The slurry is then discharged from the mill and sieved to remove iron, resulting in a slurry for later use. The slurry's performance parameters are: specific gravity 1.650 kg / L-1.700 kg / L, viscosity 80-100 seconds / 100 mL; the sieving is performed through a 325 mesh sieve, with a sieve residue of 0.1-0.2%. S3 Spraying base glaze and top glaze: First, a base glaze is sprayed onto the sanitary ceramic blank, followed by a top glaze; the spraying is performed using automated spraying equipment with pressure spraying, the air pressure for base glaze spraying is 0.65-0.75MPa, and the air pressure for top glaze spraying is 0.55-0.65MPa; the thickness of the base glaze is 0.6-0.8mm, and the thickness of the top glaze is 0.2mm-0.3mm; S4 Firing: The sanitary ceramic blanks coated with base glaze and top glaze are loaded into the kiln for firing. The process is as follows: the temperature is raised from room temperature to 1220-1240℃ at a rate of 110-130℃ / h and held for 2-3 hours, then cooled to room temperature to obtain the sanitary ceramic Jun glaze product.

2. The method for preparing a sanitary ceramic glaze product according to claim 1, characterized in that, The Jun glaze includes a base glaze and a top glaze. The base glaze includes the following raw materials in parts by weight: 15 parts potassium feldspar, 7 parts kaolin, 28 parts quartz powder, 2 parts calcined talc, 15 parts calcite, 2 parts zinc oxide, 6 parts spodumene, 15 parts frit, 5 parts iron oxide, and 3 parts manganese oxide. The surface glaze comprises the following raw materials in parts by weight: 26 parts potassium feldspar, 5 parts sodium feldspar, 25 parts quartz powder, 10 parts kaolin, 15 parts calcite, 3 parts zinc oxide, 4 parts wollastonite, and 8 parts zirconium silicate.