Ceramic rock plate with dark golden velvet texture, base glaze and preparation method of ceramic rock plate

Abstract

The invention discloses a dark golden velvet texture ceramic rock plate, base glaze and a preparation method of the dark golden velvet texture ceramic rock plate, the dark golden velvet texture ceramic rock plate is prepared from golden velvet base glaze materials, water, carboxymethyl cellulose and sodium tripolyphosphate according to the mass ratio of 100: 36: (0.1-0.2): (0.3-0.5) through mixing and ball milling; the gold velvet base glaze is prepared from the following components in parts by weight: 3-8 parts of wollastonite, 5-10 parts of dolomite, 10-15 parts of strontium carbonate, 2-5 parts of calcined talc, 30-40 parts of potassium feldspar, 5-10 parts of nepheline, 5-10 parts of calcined kaolin, 5-15 parts of quartz, 1-5 parts of white corundum, 3-8 parts of calcined zinc oxide and 10-15 parts of matte transparent frit; the matte transparent frit comprises the following components in percentage by mass: 55%-60% of SiO2, 12%-15% of AL2O3, 2%-3% of K2O, 3%-4% of Na2O and 20%-25% of CaO, and the burning vector of the matte transparent frit is 1%-5%. According to the scheme, the light transmittance of a glaze layer is improved, the transparency is improved, meanwhile, the surface gloss can be kept to be uniformly dispersed and is not clear, and the glaze touch feeling is soft like velvet.

Description

Technical Field

[0001] The present invention relates to the technical field of ceramic rock slab production and processing, and in particular to a dark-colored golden velvet textured ceramic rock slab, a base glaze and a preparation method thereof. Background Art

[0002] With the development of economy and the improvement of people's living standards, the building floor decoration industry has been paid more and more attention and has occupied a major part in home decoration. As a new type of decorative material, ceramic rock slabs are widely used in the field of home decoration and can be used for background walls, cabinets, wardrobes, tea sets, bathroom cabinets, sinks, doors and kitchen stove panels.

[0003] At present, as the application market of ceramic rock slab products becomes more and more extensive, there are more and more stringent requirements for ceramic decoration technology. The surface decoration effect of modern ceramic rock slabs is mainly achieved by using various glaze materials to give the ceramic rock slabs rich colors and textures to enhance their aesthetics. Different glaze formulas will produce different effects, making the surface of the rock slab appear smooth, transparent, matte and other textures. For example, patent ZL202111435725.X discloses a velvet textured ceramic rock slab, which improves the velvet glaze and glazing process to make the glaze distribution more uniform and not split, thereby improving the flatness, glossiness and delicacy of the glaze surface. However, the velvet ceramic rock slab of this patent has a light-colored brick surface and cannot be directly applied to a dark-colored brick surface.

[0004] Therefore, it is necessary to develop a velvet-textured ceramic rock slab for use on dark brick surfaces, so that its glossiness, flatness and fineness can be improved to a higher level, and its velvet effect is more obvious, thereby increasing the scope of application of the product. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, one of the objects of the present invention is to provide a dark gold velvet-based glaze.

[0006] The second object of the present invention is to provide a method for preparing a dark gold velvet-based glaze.

[0007] The third object of the present invention is to provide a method for preparing a dark-colored golden velvet textured ceramic rock slab.

[0008] A fourth object of the present invention is to provide a dark-colored golden velvet textured ceramic rock slab.

[0009] One of the purposes of the present invention is achieved by the following technical scheme: a dark gold velvet-based glaze, characterized in that the gold velvet-based glaze material is prepared according to the formula amount, carboxymethyl cellulose and sodium tripolyphosphate are added as additives, and the mixture is ball-milled; wherein the mass ratio of the gold velvet-based glaze material: water: carboxymethyl cellulose: sodium tripolyphosphate is 100:36: (0.1-0.2): (0.3-0.5),

[0010] The material of the gold velvet-based glaze is prepared from the following components in parts by weight: 3-8 parts of wollastonite, 5-10 parts of dolomite, 10-15 parts of strontium carbonate, 2-5 parts of calcined talc, 30-40 parts of potassium feldspar, 5-10 parts of nepheline, 5-10 parts of calcined kaolin, 5-15 parts of quartz, 1-5 parts of white corundum, 3-8 parts of calcined zinc oxide, and 10-15 parts of matte transparent frit;

[0011] The matte transparent frit comprises the following components by mass percentage: SiO2 55-60%, AL2O3 12-15%, K2O 2-3%, Na2O 3-4%, CaO 20-25%, and the sintering vector of the matte transparent frit is 1%-5%.

[0012] Optionally, the chemical composition of the dark gold velvet base glaze includes: SiO2 45-50%, AL2O3 13-15%, K2O4-5%, Na2O 1-2%, CaO 4-5%, MgO 5-6%, SrO 8-9%, ZnO 4-5%, and the loss on ignition of the dark gold velvet base glaze is 5%-10%.

[0013] The second object of the present invention is achieved by adopting the following technical solution: a method for preparing a dark gold velvet base glaze, comprising the following steps:

[0014] The materials of the gold velvet-based glaze are prepared according to the formula, and additives of carboxymethyl cellulose and sodium tripolyphosphate are added; wherein the mass ratio of the gold velvet-based glaze: water: carboxymethyl cellulose: sodium tripolyphosphate is 100:36: (0.1-0.2): (0.3-0.5). After the materials are prepared, ball milling is performed for 8-9 hours, so that the performance of the ball glaze slurry is 325 mesh, the residue is 0.4-0.6%, the specific gravity is 1.88-1.95, and the ball flow rate is 60-80s.

[0015] The third object of the present invention is achieved by adopting the following technical solution: a method for preparing a dark-colored golden velvet textured ceramic rock plate, comprising the following steps:

[0016] (1) Body forming

[0017] The ceramic rock slab powder is pressed and formed into a ceramic rock slab green body; the formed green body is transported to a drying kiln for drying; after the green body passes through the drying kiln, water is sprayed to maintain surface humidity;

[0018] (2) Applying base glaze

[0019] Sprinkle the base glaze onto the surface of the body to form a base glaze layer; the base glaze has a specific gravity of 1.85-1.92, a flow rate of 32-36s, and a glaze amount of 85-95g;

[0020] (3) Apply the first coat of dark gold velvet glaze

[0021] Add 0.3g of ink discharge agent and 0.33g of defoamer to every 100g of the dark gold velvet base glaze, adjust the specific gravity to 1.2-1.25 with water, stir evenly, and use an imported swing-type glaze spraying cabinet to spray the first dark gold velvet glaze on the surface of the base glaze to form the first dark gold velvet glaze layer; the glaze amount is 12-15g, and the spraying speed is 10-15s;

[0022] (4) Inkjet printing

[0023] On the first dark gold velvet glaze layer, inkjet printing is performed according to the designed pattern to form a printing layer;

[0024] (5) Apply the second coat of dark gold velvet glaze

[0025] Add 0.3g of ink discharge agent and 0.33g of defoamer to every 100g of the dark gold velvet base glaze, adjust the specific gravity to 1.88-1.95 with water, stir evenly, and sprinkle the second dark gold velvet glaze on the surface of the printed layer using a bell glaze sprinkler to form a second dark gold velvet glaze layer; the glaze amount is 85-90g, and the flow rate is 30-33s;

[0026] (6) The glazed body is sent to the kiln, fired at high temperature, taken out of the kiln, cooled, edged, inspected and stored to obtain the finished ceramic product.

[0027] Optionally, in steps (3) and (5), the gold velvet-based glaze comprises the following components in parts by weight: 3-8 parts of wollastonite, 5-10 parts of dolomite, 10-15 parts of strontium carbonate, 2-5 parts of calcined talc, 30-40 parts of potassium feldspar, 5-10 parts of nepheline, 5-10 parts of calcined kaolin, 5-15 parts of quartz, 1-5 parts of white corundum, 3-8 parts of calcined zinc oxide, and 10-15 parts of matte transparent frit;

[0028] Calculated by mass percentage, the chemical composition of the matte transparent frit includes: SiO2 55-60%, AL2O3 12-15%, K2O 2-3%, Na2O 3-4%, CaO 20-25%, and the sintering vector of the matte frit is 1%-5%.

[0029] Optionally, the preparation process of the gold velvet based glaze is as follows: the materials of the gold velvet based glaze are prepared according to the formula, and additives such as carboxymethyl cellulose and sodium tripolyphosphate are added; wherein the mass ratio of the gold velvet based glaze materials: water: carboxymethyl cellulose: sodium tripolyphosphate is 100:36: (0.1-0.2): (0.3-0.5). After the materials are prepared, ball milling is performed for 8-9 hours, so that the performance of the ball glaze slurry is 325 mesh, the residue is 0.4-0.6%, the specific gravity is 1.88-1.95, and the ball flow rate is 60-80s.

[0030] Optionally, in step (1), the blank is prepared from the following components in parts by weight: 16-18 parts of potassium sodium stone, 3-5 parts of potassium feldspar, 12-14 parts of ultra-white stone particles, 1-3 parts of superplastic sand, 20-24 parts of selected sand, 15-18 parts of calcined kaolin, 2-4 parts of high alumina powder, 3-5 parts of high clay, 6-8 parts of Fubai sand, 11-13 parts of high-white calcined kaolin, 4-5 parts of blank black material, 0.5-0.8 parts of water glass, 0.1-0.3 parts of sodium tripolyphosphate, and 0.1-0.2 parts of debonding agent.

[0031] Optionally, in step (2), the base glaze is prepared from the following components in parts by weight: 32-38 parts of potassium feldspar, 18-22 parts of sodium feldspar, 6-9 parts of quartz, 20-25 parts of burnt clay, 10-14 parts of calcined aluminum oxide, and 1-3 parts of calcined zinc oxide;

[0032] Calculated by mass percentage, the chemical composition of the base glaze includes: SiO2 55-60%, CaO 0.2-0.4%, Al2O3 30-35%, Na2O 2-5%, K2O2-5%, MgO 0.1-0.5%, ZnO 2-3%, and the ignition loss of the base glaze is 0.01-5%.

[0033] Optionally, in step (6), the sintering temperature is 1160°C-1180°C, and the sintering time is 70-90 minutes.

[0034] The fourth purpose of the present invention is achieved by the following technical solution: a dark golden velvet textured ceramic rock plate, prepared by the preparation method of the dark golden velvet textured ceramic rock plate described above.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] (1) In terms of formula, the present application improves the light transmittance of the glaze layer by adjusting the ratio of SiO2 and AL2O3 in the gold velvet base glaze formula, increasing the content of fluxing agents such as CaO, MgO, and SrO, and adding dolomite and a special matte transparent frit material. While enhancing the sense of transparency, it can also maintain a uniform and dispersed surface gloss, not clear crystals, a gloss of 25-35 degrees, and a velvety touch to the glaze. In addition, the melting temperature of the formula is adjusted to solve the problems of pinholes and prickly heat on the glaze surface during production.

[0037] (2) In terms of preparation technology, the present application adds a layer of gold velvet base glaze before inkjet printing. Specifically, an imported swing-type glaze spraying cabinet is used to spray the gold velvet base glaze, and the initial melting temperature of the glaze is adjusted, so as to improve the light transmittance of the glaze layer and solve the ink discharge problem in the production of dark bricks. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] like Figure 1 Shown are on-site photos of the lighting test of the example ceramic rock board and the test ceramic rock board in the same indoor environment.

[0039] In the figure: A, ceramic rock plate of Example 5; B, ceramic rock plate of Comparative Example 5. DETAILED DESCRIPTION

[0040] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0041] In the present invention, unless otherwise specified, all parts and percentages are by weight, and the equipment and raw materials used can be purchased from the market or are commonly used in the art. The methods in the following embodiments are all conventional methods in the art unless otherwise specified.

[0042] The invention provides a dark gold velvet-based glaze, which is prepared by mixing gold velvet-based glaze materials according to a formula amount, adding carboxymethyl cellulose and sodium tripolyphosphate as additives, and ball milling; wherein the mass ratio of the gold velvet-based glaze materials: water: carboxymethyl cellulose: sodium tripolyphosphate is 100:36: (0.1-0.2): (0.3-0.5),

[0043] The material of the gold velvet-based glaze is prepared from the following components in parts by weight: 3-8 parts of wollastonite, 5-10 parts of dolomite, 10-15 parts of strontium carbonate, 2-5 parts of calcined talc, 30-40 parts of potassium feldspar, 5-10 parts of nepheline, 5-10 parts of calcined kaolin, 5-15 parts of quartz, 1-5 parts of white corundum, 3-8 parts of calcined zinc oxide, and 10-15 parts of matte transparent frit;

[0044] The matte transparent frit comprises the following components by mass percentage: SiO2 55-60%, AL2O3 12-15%, K2O 2-3%, Na2O 3-4%, CaO 20-25%, and the sintering vector of the matte transparent frit is 1%-5%.

[0045] This application improves the light transmittance of the glaze layer by adjusting the ratio of SiO2 and AL2O3 in the gold velvet base glaze formula, increasing the content of fluxing agents such as CaO, MgO, and SrO, and adding dolomite and a special matte transparent frit material. While enhancing the sense of transparency, it can also keep the surface gloss uniformly dispersed, not crystal clear, with a gloss of 25-35 degrees, and the glaze feels as soft as velvet. In addition, the melting temperature of the formula is adjusted to solve the problems of pinholes and prickly heat on the glaze surface during production.

[0046] As a further embodiment, the chemical composition of the dark gold velvet base glaze includes: SiO245-50%, AL2O3 13-15%, K2O 4-5%, Na2O 1-2%, CaO 4-5%, MgO 5-6%, SrO 8-9%, ZnO 4-5%, and the burning loss of the dark gold velvet base glaze is 5%-10%. The raw materials used for the matte transparent frit include sodium feldspar, potassium feldspar, quartz powder, aluminum oxide, and zinc oxide; after mixing, melting at 1530°C, and water quenching, a crystallized frit is obtained.

[0047] The present invention also provides a method for preparing a dark gold velvet base glaze, comprising the following steps:

[0048] The materials of the gold velvet-based glaze are prepared according to the formula, and additives of carboxymethyl cellulose and sodium tripolyphosphate are added; wherein the mass ratio of the gold velvet-based glaze: water: carboxymethyl cellulose: sodium tripolyphosphate is 100:36: (0.1-0.2): (0.3-0.5). After the materials are prepared, ball milling is performed for 8-9 hours, so that the performance of the ball glaze slurry is 325 mesh, the residue is 0.4-0.6%, the specific gravity is 1.88-1.95, and the ball flow rate is 60-80s.

[0049] The present invention also provides a method for preparing a dark-colored golden velvet textured ceramic rock plate, comprising the following steps:

[0050] (1) Body forming

[0051] The ceramic rock slab powder is pressed and formed into a ceramic rock slab green body; the formed green body is transported to a drying kiln for drying; after the green body passes through the drying kiln, water is sprayed to maintain surface humidity;

[0052] (2) Applying base glaze

[0053] Sprinkle the base glaze onto the surface of the body to form a base glaze layer; the base glaze has a specific gravity of 1.85-1.92, a flow rate of 32-36s, and a glaze amount of 85-95g;

[0054] (3) Apply the first coat of dark gold velvet glaze

[0055] Add 0.3g of ink discharge agent and 0.33g of defoamer to every 100g of the dark gold velvet base glaze, adjust the specific gravity to 1.2-1.25 with water, stir evenly, and use an imported swing-type glaze spraying cabinet to spray the first dark gold velvet glaze on the surface of the base glaze to form the first dark gold velvet glaze layer; the glaze amount is 12-15g, and the spraying speed is 10-15s;

[0056] (4) Inkjet printing

[0057] On the first dark gold velvet glaze layer, inkjet printing is performed according to the designed pattern to form a printing layer;

[0058] (5) Apply the second coat of dark gold velvet glaze

[0059] Add 0.3g of ink discharge agent and 0.33g of defoamer to every 100g of the dark gold velvet base glaze, adjust the specific gravity to 1.88-1.95 with water, stir evenly, and sprinkle the second dark gold velvet glaze on the surface of the printed layer using a bell glaze sprinkler to form a second dark gold velvet glaze layer; the glaze amount is 85-90g, and the flow rate is 30-33s;

[0060] (6) The glazed body is sent to the kiln, fired at high temperature, taken out of the kiln, cooled, edged, inspected and stored to obtain the finished ceramic product.

[0061] In terms of preparation process, this application adds a layer of spraying gold velvet base glaze before inkjet printing. Specifically, an imported swing-type glaze spraying cabinet is used to spray the gold velvet base glaze and adjust the initial melting temperature of the glaze. This can improve the light transmittance of the glaze layer and solve the ink discharge problem that occurs in the production of dark bricks.

[0062] As a further embodiment, in steps (3) and (5), the gold velvet-based glaze comprises the following components in parts by weight: 3-8 parts of wollastonite, 5-10 parts of dolomite, 10-15 parts of strontium carbonate, 2-5 parts of calcined talc, 30-40 parts of potassium feldspar, 5-10 parts of nepheline, 5-10 parts of calcined kaolin, 5-15 parts of quartz, 1-5 parts of white corundum, 3-8 parts of calcined zinc oxide, and 10-15 parts of matte transparent frit;

[0063] Calculated by mass percentage, the chemical composition of the matte transparent frit includes: SiO2 55-60%, AL2O3 12-15%, K2O 2-3%, Na2O 3-4%, CaO 20-25%, and the sintering vector of the matte frit is 1%-5%.

[0064] As a further implementation method, the preparation process of the gold velvet based glaze is as follows: the materials of the gold velvet based glaze are prepared according to the formula, and additives such as carboxymethyl cellulose and sodium tripolyphosphate are added; wherein the mass ratio of the gold velvet based glaze materials: water: carboxymethyl cellulose: sodium tripolyphosphate is 100:36: (0.1-0.2): (0.3-0.5). After the materials are prepared, ball milling is carried out for 8-9 hours, so that the performance of the ball glaze slurry is 325 mesh, the residue is 0.4-0.6%, the specific gravity is 1.88-1.95, and the ball flow rate is 60-80s.

[0065] As a further embodiment, in step (1), the green body is prepared from the following components in parts by weight: 16-18 parts of potassium sodium stone, 3-5 parts of potassium feldspar, 12-14 parts of ultra-white stone particles, 1-3 parts of strong plastic sand, 20-24 parts of selected sand, 15-18 parts of calcined kaolin, 2-4 parts of high alumina powder, 3-5 parts of high clay, 6-8 parts of Fubai sand, 11-13 parts of high white calcined kaolin, 4-5 parts of green body black material, 0.5-0.8 parts of water glass, 0.1-0.3 parts of sodium tripolyphosphate, and 0.1-0.2 parts of debonding agent.

[0066] As a further embodiment, in step (2), the base glaze is prepared from the following components in parts by weight: 32-38 parts of potassium feldspar, 18-22 parts of sodium feldspar, 6-9 parts of quartz, 20-25 parts of burnt clay, 10-14 parts of calcined aluminum oxide, and 1-3 parts of calcined zinc oxide;

[0067] Calculated by mass percentage, the chemical composition of the base glaze includes: SiO2 55-60%, CaO 0.2-0.4%, Al2O3 30-35%, Na2O 2-5%, K2O2-5%, MgO 0.1-0.5%, ZnO 2-3%, and the ignition loss of the base glaze is 0.01-5%.

[0068] As a further embodiment, in step (6), the sintering temperature is 1160°C-1180°C, and the sintering time is 70-90 minutes.

[0069] The present invention also provides a dark-colored golden velvet textured ceramic rock plate, which is prepared by the above-mentioned preparation method of the dark-colored golden velvet textured ceramic rock plate.

[0070] The following are specific embodiments of the present invention. Unless otherwise specified, the raw materials, equipment, etc. used in the following embodiments can be obtained by purchase.

[0071] Example 1-Example 3 Dark gold velvet base glaze

[0072] The materials of the dark golden velvet base glaze of Examples 1-3 were weighed according to the ratios in Table 1, and the dark golden velvet base glaze was prepared according to the preparation method in Table 1, and the dark golden velvet base glaze of different examples was obtained. See Table 1 for details:

[0073] Table 1 Material ratio table of dark gold velvet base glaze of embodiment 1-3

[0074]

[0075]

[0076] Among them, the matte transparent frit described in Table 1 uses raw materials including albite, potassium feldspar, quartz powder, aluminum oxide, and zinc oxide; after mixing, melting at 1530°C, and water quenching, a crystallization frit is obtained. The matte transparent frit includes the following components in mass percentage: SiO2 58%, AL2O3 13%, K2O 2.5%, Na2O 3.5%, and CaO 23%, and the sintering vector of the matte transparent frit is 13%.

[0077] The dark gold velvet base glazes of Examples 1-3 are all prepared by the following process:

[0078] The dark velvet base glaze material (ratio in Table 1): water: carboxymethyl cellulose: sodium tripolyphosphate mass ratio of 100:36:0.15:0.4 is prepared. After preparing the ingredients, ball milling is carried out for 8-9 hours, so that the performance of the ball glaze slurry is 325 mesh, the residue is 0.5%, the specific gravity is 1.9, and the ball flow rate is 70s.

[0079] Example 4-6 Dark gold velvet texture ceramic rock plate

[0080] The dark golden velvet texture ceramic rock plate of this example is prepared by the following steps:

[0081] (1) Body forming

[0082] The ceramic rock slab powder is pressed and formed into a ceramic rock slab blank; the formed blank is transported to a drying kiln for drying; after the blank passes through the drying kiln, water is sprayed to maintain surface humidity; wherein the blank is prepared from the following components in parts by weight: 17 parts of potassium sodium stone, 4 parts of potassium feldspar, 13 parts of ultra-white stone particles, 2 parts of superplastic sand, 22 parts of selected sand, 16 parts of calcined kaolin, 3 parts of high alumina powder, 4 parts of high clay, 7 parts of Fubai sand, 12 parts of high-white calcined kaolin, 4.5 parts of blank black material, 0.6 parts of water glass, 0.2 parts of sodium tripolyphosphate, and 0.15 parts of degumming agent.

[0083] (2) Applying base glaze

[0084] Sprinkle the bottom glaze onto the surface of the body to form a bottom glaze layer; the bottom glaze has a specific gravity of 1.85-1.92, a flow rate of 32-36s, and a glaze amount of 85-95g; wherein the bottom glaze is prepared from the following components in parts by weight: 36 parts of potassium feldspar, 20 parts of sodium feldspar, 8 parts of quartz, 23 parts of burnt clay, 12 parts of calcined aluminum oxide, and 2 parts of calcined zinc oxide;

[0085] Calculated by mass percentage, the chemical composition of the base glaze includes: SiO2 58%, CaO 0.3%, Al2O3 32%, Na2O 3%, K2O 3%, MgO 0.3%, ZnO 2.5%, and the loss on ignition of the base glaze is 0.05%.

[0086] (3) Apply the first coat of dark gold velvet glaze

[0087] Add 0.3g of ink discharge agent and 0.33g of defoamer to every 100g of the dark gold velvet base glaze, adjust the specific gravity to 1.2-1.25 with water, stir evenly, and use an imported swing-type glaze spraying cabinet to spray the first dark gold velvet glaze on the surface of the base glaze to form the first dark gold velvet glaze layer; the glaze amount is 12-15g, and the flow rate is 10-15s;

[0088] (4) Inkjet printing

[0089] On the first dark gold velvet glaze layer, inkjet printing is performed according to the designed pattern to form a printing layer;

[0090] (5) Apply the second coat of dark gold velvet glaze

[0091] Add 0.3g of ink discharge agent and 0.33g of defoamer to every 100g of the dark gold velvet base glaze, adjust the specific gravity to 1.88-1.95 with water, stir evenly, and sprinkle the second dark gold velvet glaze on the surface of the printed layer using a bell glaze sprinkler to form a second dark gold velvet glaze layer; the glaze amount is 85-90g, and the flow rate is 30-33s;

[0092] (6) The glazed body is sent to a kiln for high-temperature firing, taken out of the kiln, cooled, edged, inspected and stored to obtain a finished ceramic product. The firing temperature is 1170° C. and the firing time is 75 minutes.

[0093] Among them, in steps (3) and (5) of Examples 4-6, the gold velvet base glaze corresponds to the dark gold velvet base glaze prepared by Examples 1-3 respectively.

[0094] Comparative Example 1

[0095] Compared with Example 5, the difference of Comparative Example 1 is that the raw material ratio of the dark gold velvet base glaze lacks matte transparent frit and dolomite, wherein the dark gold velvet base glaze used in Example 5 corresponds to the formula of the dark gold velvet base glaze from Example 2, and the parameter conditions of the other preparation methods refer to Example 5.

[0096] Comparative Example 2

[0097] Compared with Example 5, the difference of Comparative Example 2 is that the formula of the gold velvet base glaze is different, and the gold velvet base glaze formula in Example 1 of Patent No. ZL202111435725.X is specifically adopted, that is, the gold velvet base glaze is specifically prepared from the following components by weight: 10 parts of wollastonite, 7 parts of strontium carbonate, 13 parts of calcined talc, 35 parts of potassium feldspar, 15 parts of nepheline, 8 parts of calcined kaolin, 4 parts of quartz, 3 parts of white corundum, and 5 parts of calcined zinc oxide. In terms of mass percentage, the chemical composition of the gold velvet base glaze includes: SiO253.3%, Al2O316.37%, K2O 3.9%, Na2O 3.15%, CaO 4.95%, MgO 4.29%, SrO 4.9%, ZnO5%, and the loss on ignition of the gold velvet base glaze is 3.14%.

[0098] Comparative Example 3

[0099] Compared with Example 5, the difference of Example 3 is that in the process of ceramic rock slab, step (3) of applying the first layer of dark gold velvet glaze is missing, and the remaining formula composition and production method conditions refer to Example 5.

[0100] Comparative Example 4

[0101] Compared with Example 5, the difference of Example 4 is that in the process of ceramic rock slab, step (5) of applying the second layer of dark gold velvet glaze is missing, and the remaining formula composition and production method conditions refer to Example 5.

[0102] Comparative Example 5

[0103] The ceramic rock slab of comparative example 5 is made using the formula and process of patent number ZL202111435725.X.

[0104] Effect evaluation and performance testing

[0105] 1. The performance of the ceramic rock slabs of Examples 4-6 and Comparative Examples 1-5 was tested. See Table 2 for the test items and results.

[0106] Scoring criteria: 10 points is the full score, the higher the score, the better the effect.

[0107] Dark hair color: The judging standard is the color rendering of the pattern. Under dark colors, the best effect is when the hair color is transparent and has no color cast.

[0108] Glaze surface fineness: based on the touch of the hand, soft, fine and smooth are the parameters, velvety soft is the best;

[0109] Gloss: The test method uses a gloss meter to measure;

[0110] Crystal clarity: Observe the crystals on the glaze surface, the clearer the better;

[0111] Antifouling performance: The judging standard is the result of wiping with an oily pen mark. The cleaner the wipe, the higher the score.

[0112] Table 2: Performance test table of ceramic rock panels of Examples 4-6 and Comparative Examples 1-5

[0113]

[0114] 2. Lighting test

[0115] The dark golden velvet textured ceramic rock slab of Example 5 of the present invention and the golden velvet textured ceramic rock slab of Comparative Example 5 were subjected to lighting tests in the same indoor environment to observe their brick surface effects.

[0116] like Figure 1 The figure shows the on-site photos of the lighting test of the example ceramic rock plate and the test ceramic rock plate in the same indoor environment. The A tile in the figure is the dark golden velvet texture ceramic rock plate of Example 5, and the B tile is the golden velvet texture ceramic rock plate of Comparative Example 5. The results show that the dark golden velvet texture ceramic rock plate of the present invention is superior to the existing golden velvet texture ceramic rock plate in terms of brick surface, dark color development, flatness, glossiness and fineness.

[0117] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A dark gold velvet base glaze, characterized in that: The gold velvet-based glaze material is prepared according to the formula, and carboxymethyl cellulose and sodium tripolyphosphate are added as additives, and the mixture is ball-milled; wherein the mass ratio of the gold velvet-based glaze material: water: carboxymethyl cellulose: sodium tripolyphosphate is 100:36: (0.1-0.2): (0.3-0.5), The material of the gold velvet-based glaze is prepared from the following components in parts by weight: 3-8 parts of wollastonite, 5-10 parts of dolomite, 10-15 parts of strontium carbonate, 2-5 parts of calcined talc, 30-40 parts of potassium feldspar, 5-10 parts of nepheline, 5-10 parts of calcined kaolin, 5-15 parts of quartz, 1-5 parts of white corundum, 3-8 parts of calcined zinc oxide, and 10-15 parts of matte transparent frit; The matte transparent frit comprises the following components by mass percentage: SiO2 55-60%, AL2O3 12-15%, K2O 2-3%, Na2O 3-4%, CaO 20-25%, and the sintering vector of the matte transparent frit is 1%-5%.

2. The dark gold velvet base glaze according to claim 1, characterized in that: The chemical composition of the dark gold velvet base glaze includes: SiO2 45-50%, AL2O3 13-15%, K2O 4-5%, Na2O 1-2%, CaO 4-5%, MgO 5-6%, SrO 8-9%, ZnO 4-5%, and the burning loss of the dark gold velvet base glaze is 5%-10%.

3. A method for preparing a dark gold velvet-based glaze, characterized in that: The steps include: The materials of the gold velvet-based glaze are prepared according to the formula, and additives of carboxymethyl cellulose and sodium tripolyphosphate are added; wherein the mass ratio of the gold velvet-based glaze: water: carboxymethyl cellulose: sodium tripolyphosphate is 100:36: (0.1-0.2): (0.3-0.5). After the materials are prepared, ball milling is performed for 8-9 hours, so that the performance of the ball glaze slurry is 325 mesh, the residue is 0.4-0.6%, the specific gravity is 1.88-1.95, and the ball flow rate is 60-80s.

4. A method for preparing a dark-colored golden velvet textured ceramic rock plate, characterized in that: The steps include: (1) Body forming The ceramic rock slab powder is pressed and formed into a ceramic rock slab green body; the formed green body is transported to a drying kiln for drying; after the green body passes through the drying kiln, water is sprayed to maintain surface humidity; (2) Applying bottom glaze: Sprinkling the bottom glaze onto the surface of the body to form a bottom glaze layer; the bottom glaze has a specific gravity of 1.85-1.92, a flow rate of 32-36s, and a glaze application amount of 85-95g; (3) Apply the first coat of dark gold velvet glaze Add 0.3g of ink discharge agent and 0.33g of defoamer to every 100g of the dark gold velvet base glaze, adjust the specific gravity to 1.2-1.25 with water, stir evenly, and use an imported swing-type glaze spraying cabinet to spray the first dark gold velvet glaze on the surface of the base glaze to form the first dark gold velvet glaze layer; the glaze amount is 12-15g, and the flow rate is 10-15s; (4) Inkjet printing On the first dark gold velvet glaze layer, inkjet printing is performed according to the designed pattern to form a printing layer; (5) Apply the second coat of dark gold velvet glaze Add 0.3g of ink discharge agent and 0.33g of defoamer to every 100g of the dark gold velvet base glaze, adjust the specific gravity to 1.88-1.95 with water, stir evenly, and sprinkle the second dark gold velvet glaze on the surface of the printed layer using a bell glaze sprinkler to form a second dark gold velvet glaze layer; the glaze amount is 85-90g, and the flow rate is 30-33s; (6) The glazed body is sent to the kiln, fired at high temperature, taken out of the kiln, cooled, edged, inspected and stored to obtain the finished ceramic product.

5. The method for preparing the dark golden velvet textured ceramic rock plate according to claim 4, characterized in that: In steps (3) and (5), the gold velvet-based glaze comprises the following components in parts by weight: 3-8 parts of wollastonite, 5-10 parts of dolomite, 10-15 parts of strontium carbonate, 2-5 parts of calcined talc, 30-40 parts of potassium feldspar, 5-10 parts of nepheline, 5-10 parts of calcined kaolin, 5-15 parts of quartz, 1-5 parts of white corundum, 3-8 parts of calcined zinc oxide, and 10-15 parts of matte transparent frit; Calculated by mass percentage, the chemical composition of the matte transparent frit includes: SiO2 55-60%, AL2O3 12-15%, K2O 2-3%, Na2O 3-4%, CaO 20-25%, and the sintering vector of the matte frit is 1%-5%.

6. The method for preparing the dark golden velvet textured ceramic rock plate according to claim 5, characterized in that: The preparation process of the gold velvet-based glaze is as follows: the materials of the gold velvet-based glaze are prepared according to the formula amount, and additives such as carboxymethyl cellulose and sodium tripolyphosphate are added; wherein the mass ratio of the gold velvet-based glaze materials: water: carboxymethyl cellulose: sodium tripolyphosphate is 100:36: (0.1-0.2): (0.3-0.5); after the materials are prepared, ball milling is performed, and the ball milling time is 8-9 hours, so that the performance of the ball glaze slurry is 325 mesh, the sieve residue is 0.4-0.6%, the specific gravity is 1.88-1.95, and the ball flow rate is 60-80s.

7. The method for preparing the dark golden velvet textured ceramic rock plate according to claim 4, characterized in that: In step (1), the green body is prepared from the following components in parts by weight: 16-18 parts of potassium sodium stone, 3-5 parts of potassium feldspar, 12-14 parts of ultra-white stone particles, 1-3 parts of strong plastic sand, 20-24 parts of selected sand, 15-18 parts of calcined kaolin, 2-4 parts of high alumina powder, 3-5 parts of high clay, 6-8 parts of Fubai sand, 11-13 parts of high white calcined kaolin, 4-5 parts of green body black material, 0.5-0.8 parts of water glass, 0.1-0.3 parts of sodium tripolyphosphate, and 0.1-0.2 parts of debonding agent.

8. The method for preparing the dark golden velvet textured ceramic rock plate according to claim 4, characterized in that: In step (2), the base glaze is prepared from the following components in parts by weight: 32-38 parts of potassium feldspar, 18-22 parts of sodium feldspar, 6-9 parts of quartz, 20-25 parts of burnt clay, 10-14 parts of calcined aluminum oxide, and 1-3 parts of calcined zinc oxide; The chemical composition of the base glaze includes, by mass percentage, SiO2 55-60%, CaO 0.2-0.4%, Al2O3 30-35%, Na2O 2-5%, K2O2-5%, MgO 0.1-0.5%, and ZnO 2-3%, and the ignition loss of the base glaze is 0.01-5%.

9. The method for preparing the dark golden velvet textured ceramic rock plate according to claim 4, characterized in that: In step (6), the sintering temperature is 1160°C-1180°C and the sintering time is 70-90 minutes.

10. A method for preparing a dark-colored golden velvet textured ceramic rock plate, characterized in that: The dark golden velvet textured ceramic rock slab is prepared by the preparation method of any one of claims 4-9.

Images