Luxury stone ceramic and method for manufacturing the same

Abstract

The present application relates to a kind of luxury stone ceramics and its preparation method, belong to ceramic production manufacturing technical field.The preparation method of the luxury stone ceramics includes: glaze is applied on the surface of green body;After glaze is applied on the surface of green body, matt color glaze is applied;After matt color glaze is applied on the surface of green body, inkjet printing is printed on the surface of green body;After inkjet printing is printed on the surface of green body, whitening glaze is applied;After whitening glaze is applied on the surface of green body, color inkjet printing is printed;After color inkjet printing is printed on the surface of green body, number code protection glaze is applied;After number code protection glaze is applied on the surface of green body, it is fired and polished, and the luxury stone ceramics is obtained.The present application can highly restore the luxury stone color and detail of various different textures, and production process stability is good.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of luxury stone ceramics and its preparation method, belong to ceramic production manufacturing technical field. BACKGROUND

[0002] Ceramics as cost-effective building decoration materials and have good reduction degree to most stone materials are favored by consumers. But the pity is: At present, digital oil-based ink and process technology can not highly restore the color and details of luxury stone. Silk screen and roller printing process can meet the color requirements, but the texture details are fixed. If multiple different design pages are produced, multiple different silk screens or rollers are needed, and it is difficult to operate for large size ceramics, and the production stability is poor, which cannot meet the market demand. In addition, although digital spray glaze technology can realize the positioning printing of water-based glaze, due to the stability, precision and requirements of glaze of the equipment, the problems have not been completely solved, and further improvement is needed. SUMMARY

[0003] In view of the above problems, the present application provides a kind of luxury stone ceramics and its preparation method, which can highly restore the color and details of various different textures of luxury stone, and the production process has good stability. The technical purpose of the present application is realized by the following technical scheme:

[0004] In the first aspect, the present application provides a preparation method of luxury stone ceramics. The preparation method comprises:

[0005] applying a surface glaze to the body surface;

[0006] applying a matte color glaze to the body surface after applying the surface glaze;

[0007] inkjet printing a dispelling ink pattern on the body surface after applying the matte color glaze;

[0008] applying a whitening glaze to the body surface after inkjet printing the dispelling ink pattern;

[0009] inkjet printing a color ink pattern on the body surface after applying the whitening glaze;

[0010] applying a digital code protection glaze to the body surface after inkjet printing the color ink pattern;

[0011] firing and polishing the body after applying the digital code protection glaze to obtain the luxury stone ceramics.

[0012] Preferably, the matte color glaze comprises a matte glaze and a colorant; wherein the chemical composition of the matte glaze comprises, in mass percentage, SiO2: 40-50%, Al2O3: 23-28%, Fe2O3: 0.1-0.3%, TiO2: 0.1-0.3%, CaO: 6-10%, MgO: 2-5%, K2O: 0.5-2%, Na2O: 2-5%, ZnO: 2-5%, BaO: 0.2-2%, loss on ignition: 5-8%.

[0013] Preferably, the matte color glaze comprises, in mass percentage, 80-97% of the matte glaze and 3-20% of the colorant.

[0014] Preferably, the matte color glaze is applied by spraying; preferably, the specific gravity of the matte color glaze is 1.4-1.6 g / cm3, and the glazing amount is 250-500 g / m2. 3 2 .

[0015] Preferably, the chemical composition of the whitening glaze comprises, in mass percentage, SiO2: 40-50%, Al2O3: 18-23%, Fe2O3: 0.1-0.3%, TiO2: 0.1-0.3%, CaO: 6-10%, MgO: 2-5%, K2O: 0.5-3%, Na2O: 2-5%, ZnO: 2-5%, BaO: 3-8%, loss on ignition: 5-8%. The whitening glaze with the chemical composition has the same chemical composition system as the matte glaze.

[0016] Preferably, the whitening glaze is applied by spraying; preferably, the specific gravity of the whitening glaze is 1.2-1.3 g / cm3, and the glazing amount is 150-300 g / m2. 3 2 .

[0017] Preferably, the chemical composition of the overglaze comprises, in mass percentage, SiO2: 50-60%, Al2O3: 23-28%, Fe2O3: 0.1-0.3%, TiO2: 0.1-0.3%, CaO: 0.1-0.3%, MgO: 0.1-0.3%, K2O: 3-5%, Na2O: 2-4%, ZrO2: 5-10%, loss on ignition: 3-5%.

[0018] Preferably, the overglaze is applied by spraying; preferably, the specific gravity of the overglaze is 1.4-1.5 g / cm3, and the glazing amount is 450-650 g / m2. 3 2 .

[0019] ​​​Preferably, the chemical composition of the digital protection glaze comprises, in mass percentage, SiO2: 90-93%, Al2O3: 3-5%, TiO2: 0.01-0.3%, CaO: 0.1-0.3%, MgO: 0.1-0.3%, K2O: 0.01-0.3%, Na2O: 1-3%, ZnO: 0.2-1%, and loss on ignition: 2-5%.

[0020] Preferably, the digital protection glaze is applied by inkjet printing, and the specific gravity of the digital protection glaze is 1-1.3 g / cm 3 , and the glaze application amount is 20-60 g / m 2 .

[0021] Preferably, the firing temperature is 1150-1210℃, and the firing period is 35-90 minutes.

[0022] In a second aspect, the present application provides a preparation method of luxury stone ceramics.

[0023] Applying a surface glaze on the body surface;

[0024] Inkjet printing a color ink pattern on the body surface after the surface glaze is applied;

[0025] Applying a matte color glaze on the body surface after the inkjet printing of the color ink pattern;

[0026] Inkjet printing a color ink pattern on the body surface after the matte color glaze is applied;

[0027] Applying a digital protection glaze on the body surface after the inkjet printing of the color ink pattern;

[0028] Firing and polishing the body after the digital protection glaze is applied, to obtain the luxury stone ceramics.

[0029] Preferably, the area of the color ink pattern accounts for no more than 80% of the overall area of the version, and preferably no more than 60%. If the area of the color ink pattern accounts for too large a proportion of the overall area of the version, it will cause ink discharge due to the high area of the color ink pattern, and it will also easily affect the oxidation exhaust of the body, thereby affecting the performance of the glaze layer.

[0030] In a third aspect, the present application provides luxury stone ceramics obtained by the preparation method described in any one of the above aspects.

[0031] The present application has the following beneficial effects:

[0032] The luxury stone ceramic preparation method of the present application can highly restore the luxury stone color and details of various different textures, and has good production process stability. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1is a brick surface effect drawing of Example 1;

[0034] Figure 2 is a brick surface effect drawing of Example 2;

[0035] Figure 3 is a brick surface effect drawing of Comparative Example 1;

[0036] Figure 4 is a brick surface effect drawing of Comparative Example 2;

[0037] Figure 5 is a brick surface effect drawing of Comparative Example 4. DETAILED DESCRIPTION

[0038] The present application is further illustrated by the following examples, which should not be construed as limiting the present application. The following exemplary illustrates a method for preparing a luxury stone ceramic.

[0039] The green body powder is formed into a green body. The chemical composition and mineral composition of the green body powder are not limited, and a green body powder commonly used in the art can be used. As an example, the chemical composition of the green body powder includes, by mass percent, SiO2: 63% to 68%, Al2O3: 17% to 21%, Fe2O3: 0.2% to 0.8%, TiO2: 0.1% to 0.6%, CaO: 0.5% to 1%, MgO: 0.5% to 1.5%, K2O: 2% to 3%, Na2O: 2% to 3%, loss on ignition: 4% to 6%. The forming method includes, but is not limited to, dry pressing. A press can be used for forming.

[0040] The green body is dried. The green body can be dried in a drying kiln. The drying can be electric drying or hot air drying. The drying temperature can be 120 to 180°C. The drying time can be 40 to 60 minutes. The moisture content of the dried green body can be 0.3% to 0.5%.

[0041] A surface glaze is applied to the surface of the green body. A conventional surface glaze commonly used in the art can be used. In an optional embodiment, the chemical composition of the surface glaze includes, by mass percent, SiO2: 50% to 60%, Al2O3: 23% to 28%, Fe2O3: 0.1% to 0.3%, TiO2: 0.1% to 0.3%, CaO: 0.1% to 0.3%, MgO: 0.1% to 0.3%, K2O: 3% to 5%, Na2O: 2% to 4%, ZrO2: 5% to 10%, loss on ignition: 3% to 5%.

[0042] As an example, the mineral composition of the surface glaze includes, by mass percent, kaolin 10% to 20%, alumina powder 5% to 15%, potassium feldspar 20% to 40%, sodium feldspar 20% to 40%, zirconium silicate 5% to 15%.

[0043] Each raw material is weighed according to the mineral composition of the face glaze, sodium carboxymethyl cellulose, sodium tripolyphosphate and water are added to the mineral composition of the face glaze, and the mixture is ball milled uniformly, screened to remove iron, to obtain a face glaze slip. The mass percentage of sodium carboxymethyl cellulose in the mineral composition of the face glaze can be 0.1% to 0.5%. The mass percentage of sodium tripolyphosphate in the mineral composition of the face glaze can be 0.1% to 0.5%. When the face glaze is used, water is added to the face glaze slip to adjust to the required specific gravity.

[0044] The application method of the face glaze can be spray glazing. For example, the specific gravity of the face glaze is 1.4 to 1.5 g / cm 3 , and the glazing amount is 450 to 650 g / m 2 .

[0045] A matte color glaze is applied to the surface of the body after the face glaze is applied. The purpose of this step is to restore the color required by the jade. The matte color glaze includes, for example, 80% to 97% of a matte glaze and 3% to 20% of a colorant by mass percentage. In an optional embodiment, the chemical composition of the matte glaze includes, by mass percentage, SiO2: 40% to 50%, Al2O3: 23% to 28%, Fe2O3: 0.1% to 0.3%, TiO2: 0.1% to 0.3%, CaO: 6% to 10%, MgO: 2% to 5%, K2O: 0.5% to 2%, Na2O: 2% to 5%, ZnO: 2% to 5%, BaO: 0.2% to 2%, and loss on ignition: 5% to 8%. If the chemical composition of the matte glaze exceeds the above range, it will result in poor texture of the glaze surface, difficult color restoration, and easy occurrence of glaze bubbles. Conventional colorants commonly used in the art can be used. The type of colorant is also not limited. For example, but not limited to, wrapped red colorant, cobalt blue colorant, etc. The melting (initial melting) temperature of the matte glaze can be 1150 to 1200°C. The firing temperature should be higher than the melting temperature of the matte glaze.

[0046] For example, the mineral composition of the matte glaze includes, by mass percentage, corundum 5% to 10%, burned clay 10% to 20%, burned talc 5% to 15%, potassium feldspar 5% to 20%, sodium feldspar 15% to 40%, kaolin 5% to 15%, calcined zinc oxide 2% to 5%, barium carbonate 0.5% to 3%, and calcite 10% to 20%.

[0047] Each raw material is weighed according to the mineral composition of the matte glaze, sodium carboxymethyl cellulose, sodium tripolyphosphate and water are added to the mineral composition of the matte glaze, and the mixture is ball milled uniformly, screened to remove iron, to obtain a matte glaze slip. The mass percentage of sodium carboxymethyl cellulose in the mineral composition of the matte glaze can be 0.1% to 0.5%. The mass percentage of sodium tripolyphosphate in the mineral composition of the matte glaze can be 0.1% to 0.5%. When the matte glaze is used, water is added to the matte glaze slip to adjust to the required specific gravity.

[0048] The matte color glaze can be applied by spraying. For example, the specific gravity of the matte color glaze can be 1.4-1.6 g / cm 3 , and the application amount of the glaze can be 250-500 g / m 2 .

[0049] The inkjet-printed ink-repellent pattern is printed on the surface of the body after the matte color glaze is applied. The purpose of the inkjet-printed ink-repellent pattern is to repel the subsequent application of the whitening glaze, reduce the residue of the whitening glaze in the ink-repellent area, and reduce the influence of the whitening glaze on the color of the area. The composition of the ink-repellent ink is not limited. The ink-repellent ink commonly used in the art can be used.

[0050] The whitening glaze is applied on the surface of the body after the inkjet-printed ink-repellent pattern is printed. The purpose of the application of the whitening glaze is to cover the matte color glaze in the area where the ink-repellent ink is not applied, so that the color inkjet-printed ink can better cover the color in the area where the ink-repellent ink is not applied, and enhance the details and levels of the layout. Different color pigments have different penetrabilities. In actual production, the application amounts of the whitening glaze and the color ink need to be adjusted according to the adaptability of the layout. It should be particularly noted that in the white color block area of the layout, if the whitening glaze is not applied, only the white ink cannot cover the color (especially the red background color with strong penetration) in the area where the ink-repellent ink is not applied, and the whitening glaze and the white ink must be used together to cover the color.

[0051] The whitening glaze preferably has the same chemical composition system as the matte glaze. In an optional embodiment, the chemical composition of the whitening glaze includes, in terms of mass percentage, SiO2: 40%-50%, Al2O3: 18%-23%, Fe2O3: 0.1%-0.3%, TiO2: 0.1%-0.3%, CaO: 6%-10%, MgO: 2%-5%, K2O: 0.5%-3%, Na2O: 2%-5%, ZnO: 2%-5%, BaO: 3%-8%, and loss on ignition: 5%-8%. The melting (initial melting) temperature of the whitening glaze can be 1130-1150°C. The firing temperature should be higher than the melting temperature of the whitening glaze. In an optional embodiment, the melting temperature of the whitening glaze can be 20-50°C lower than that of the matte glaze.

[0052] As an example, the mineral composition of the whitening glaze includes, in terms of mass percentage, corundum 0%-5% (for example, 1%-5%), burned clay 10%-20%, burned talc 5%-15%, potassium feldspar 5%-30%, sodium feldspar 15%-40%, kaolin 5%-15%, calcined zinc oxide 2%-5%, barium carbonate 5%-10%, and calcite 10%-20%.

[0053] The raw materials are weighed according to the mineral composition of the whitening glaze, and sodium carboxymethyl cellulose, sodium tripolyphosphate and water are added to the mineral composition of the whitening glaze, which is uniformly ball milled, screened to remove iron, and a whitening glaze slurry is obtained. The mass percentage of sodium carboxymethyl cellulose in the mineral composition of the whitening glaze can be 0.1% to 0.5%. The mass percentage of sodium tripolyphosphate in the mineral composition of the whitening glaze can be 0.1% to 0.5%. When the whitening glaze is used, water can be added to the whitening glaze slurry to adjust to the required specific gravity.

[0054] The application method of the whitening glaze can be spraying. For example, the specific gravity of the whitening glaze is 1.2 to 1.3 g / cm 3 , and the glaze application amount is 150 to 300 g / m 2 . If the glaze application amount of the whitening glaze is too high, the whitening glaze is easy to remain in the area where the ink is wiped off, which will cover the color of the area where the ink is wiped off. If the glaze application amount of the whitening glaze is too low, the covering ability is weakened. Moreover, if the glaze application amount of the whitening glaze is too high, glaze bubbles will appear on the brick surface.

[0055] The color ink pattern is inkjet printed on the surface of the body after the whitening glaze is applied according to the layout design. The texture and color of the color ink pattern can be adaptively changed according to the needs. For example, white ink is inkjet printed in the white color block area of the layout, and corresponding ink of other colors is inkjet printed in the other color block areas of the layout.

[0056] The digital code protection glaze is applied on the surface of the body after the color ink pattern is inkjet printed. The digital code protection glaze commonly used in the art can be used. In an optional embodiment, the chemical composition of the digital code protection glaze includes, in mass percentage, SiO2: 90% to 93%, Al2O3: 3% to 5%, TiO2: 0.01% to 0.3%, CaO: 0.1% to 0.3%, MgO: 0.1% to 0.3%, K2O: 0.01% to 0.3%, Na2O: 1% to 3%, ZnO: 0.2% to 1%, and loss on ignition: 2% to 5%.

[0057] The application method of the digital code protection glaze is inkjet printing. For example, the specific gravity of the digital code protection glaze is 1 to 1.3 g / cm 3 , and the glaze application amount is 20 to 60 g / m 2 . If the application amount of the digital code protection glaze is too much, the transparency will decrease, and the color presentation of the area where the ink is wiped off will be affected.

[0058] The body after the digital code protection glaze is applied is dried. The drying can be electric drying or hot air drying. The drying temperature can be 120 to 180℃.

[0059] The body after the digital code protection glaze is applied is fired. In an optional embodiment, the firing temperature is 1150 to 1210℃, and the firing period is 35 to 90 minutes.

[0060] Polishing. Edging. Grading.

[0061] As an optional technical solution, the application further provides another preparation method of the luxury stone ceramic. The preparation method comprises: applying a face glaze on the surface of the body; jet printing a dispelling ink pattern on the surface of the body after the face glaze is applied; applying a matte color glaze on the surface of the body after the jet printing of the dispelling ink pattern; jet printing a color ink pattern on the surface of the body after the application of the matte color glaze; applying a digital code protection glaze on the surface of the body after the jet printing of the color ink pattern; and firing and polishing the body after the application of the digital code protection glaze to obtain the luxury stone ceramic. In this preparation method, there is no process of applying a whitening glaze. The compositions and glazing parameters of the face glaze, the matte color glaze and the digital code protection glaze are as described above.

[0062] In the above two technical solutions, the proportion of the area of the dispelling ink pattern to the overall area of the plate is not higher than 80%, and is preferably not higher than 60%. If the proportion of the area of the dispelling ink pattern to the overall area of the plate is too large, it will cause ink discharge due to the excessively high dispelling area, and it is also easy to affect the oxidation exhaust of the body, thereby affecting the performance of the glaze layer.

[0063] As an optional technical solution, the glazing process of applying a face glaze, applying a matte color glaze, jet printing a dispelling ink pattern, applying a whitening glaze, jet printing a color ink pattern and applying a digital code protection glaze is particularly suitable for the scenario where the dispelling ink area is a medium area. For example, the proportion of the area of the dispelling ink pattern to the overall area of the plate is 20% to 80%, preferably 20% to 60%, and more preferably 20% to 50%.

[0064] As an optional technical solution, the glazing process of applying a face glaze, jet printing a dispelling ink pattern, applying a matte color glaze, jet printing a color ink pattern and applying a digital code protection glaze is particularly suitable for the scenario where the dispelling ink area is a small area. For example, the proportion of the area of the dispelling ink pattern to the overall area of the plate is not higher than 20%, preferably 2% to 15%, and more preferably 5% to 15%.

[0065] The application develops a special matte color glaze which cooperates with dispelling ink and color ink (white and other colored ink) to achieve luxury stone colors and details that cannot be achieved by the existing preparation process, has high production stability, and greatly improves the surface decoration of the product.

[0066] The following examples are further listed to illustrate the application in detail. It should also be understood that the following examples are only used to further illustrate the application, and cannot be understood as a limitation on the protection scope of the application. Some non-essential improvements and adjustments made by those skilled in the art based on the above content of the application are within the protection scope of the application. The specific process parameters in the following examples are only one example in the appropriate range, i.e., those skilled in the art can make appropriate selection within the range through the description herein, and are not limited to the specific values in the following examples.

[0067] Example 1

[0068] The preparation methods of luxury stone ceramics include:

[0069] Step 1. Dry press the powder into a blank and dry the blank.

[0070] Step 2. Apply a surface glaze to the dried body. The chemical composition of the surface glaze includes, by mass percentage: SiO2: 53.02%, Al2O3: 26.4%, Fe2O3: 0.24%, TiO2: 0.11%, CaO: 0.27%, MgO: 0.1%, K2O: 4.43%, Na2O: 2.68%, ZrO2: 7.86%, and loss on ignition: 4.89%. The surface glaze is applied by spraying. The specific gravity of the surface glaze is 1.43 g / cm³. 3 Glazing amount is 580 g / m 2 .

[0071] Step 3. Apply a matte glaze to the surface of the body after the surface glaze has been applied. The matte glaze is composed of 90% matte glaze, 9.7% encapsulated red, and 0.3% cobalt black by weight percentage. The chemical composition of the matte glaze includes, by weight percentage: SiO2: 46.54%, Al2O3: 23.7%, Fe2O3: 0.13%, TiO2: 0.1%, CaO: 9.03%, MgO: 2.45%, K2O: 0.52%, Na2O: 4.72%, ZnO: 4.76%, BaO: 0.52%, and loss on ignition: 7.53%. The matte glaze is applied by spraying. The specific gravity of the matte glaze is 1.45 g / cm³. 3 Glazing amount is 300 g / m 2 The melting temperature of the matte glaze is 1160℃.

[0072] Step 4. Inkjet print a pattern of scrambled ink onto the surface of the unglazed body after applying the matte glaze. The area of ​​the scrambled ink pattern should occupy approximately 30% of the total print area.

[0073] Step 5. Apply a whitening glaze to the surface of the blank after inkjet printing to reveal the ink pattern. The chemical composition of the whitening glaze includes, by mass percentage: SiO2: 48%, Al2O3: 19.8%, Fe2O3: 0.26%, TiO2: 0.11%, CaO: 8.07%, MgO: 2.28%, K2O: 0.57%, Na2O: 4.45%, ZnO: 4.32%, BaO: 5.36%, and loss on ignition: 6.78%. The whitening glaze is applied by spraying. The specific gravity of the whitening glaze is 1.3 g / cm³. 3 The glaze application rate is 216 g / m².2 The melting temperature of the white glaze is 1130°C.

[0074] Step 6. Inkjet printing color ink pattern on the surface of the body after applying the white glaze. Among them, inkjet printing white ink in the white color block area, and inkjet printing corresponding color ink in other color block areas.

[0075] Step 7. Spraying digital code protection glaze on the surface of the body after inkjet printing color ink pattern. The chemical composition of the digital code protection glaze includes: SiO2: 90.78%, Al2O3: 3.86%, TiO2: 0.01%, CaO: 0.14%, MgO: 0.12%, K2O: 0.08%, Na2O: 2.1%, ZnO: 0.38%, loss on ignition: 2.53% by mass. The application method of the digital code protection glaze is inkjet printing. The specific gravity of the digital code protection glaze is 1.15 g / cm 3 , and the glaze application amount is 46 g / m 2 .

[0076] Step 8. Polishing and edge grading the body after spraying the digital code protection glaze to obtain luxury stone ceramic. The firing temperature is 1162°C, and the firing period is 72 minutes.

[0077] Figure 1 is the brick surface effect drawing of Example 1. It can be seen that the red pattern perfectly presents the luxury stone color, and the white pattern area does not reveal the red color of the bottom, and the details and levels are perfectly presented.

[0078] Example 2

[0079] The preparation method of luxury stone ceramic includes the following steps:

[0080] Step 1. Dry pressing the body powder to prepare a body and drying the body.

[0081] Step 2. Applying face glaze on the surface of the dried body. The composition and glazing process of the face glaze are the same as those of Example 1.

[0082] Step 3. Inkjet printing the push-away ink pattern on the surface of the body after applying the face glaze. The area of the push-away ink pattern accounts for about 10% of the overall area of the layout.

[0083] Step 4. Applying matte color glaze on the surface of the body after inkjet printing the push-away ink pattern. The composition and glazing process of the matte color glaze are the same as those of Example 1.

[0084] Step 5. Inkjet printing color ink pattern on the surface of the body after applying the matte color glaze. Among them, inkjet printing white ink in the white color block area, and inkjet printing corresponding color ink in other color block areas.

[0085] Step 6. The body after the inkjet printing color ink pattern is glazed with a digital protection glaze. The composition of the digital protection glaze and the glazing process are the same as in Example 1.

[0086] Step 7. The body after the digital protection glaze is fired to obtain the polished edge classified luxury stone ceramic. The firing temperature is 1162℃, and the firing cycle is 72 minutes.

[0087] Figure 2 is the brick surface effect drawing of Example 2. This example is aimed at the luxury stone version of large area color blocks, and the design is reverse dialing, that is, dialing small area of matte color glaze area, and the large area red pattern of the brick surface perfectly presents the luxury stone color, and the details and level performance are vivid. On the contrary, the process of this example is used for the version of small area color blocks, and since only the small area of red needs to be reserved, the ink discharge problem is prone to occur due to the excessive use of dialing ink.

[0088] Comparative Example 1

[0089] It is basically the same as Example 1, and the only difference is that the glazing process of the whitening glaze is omitted.

[0090] Figure 3 is the brick surface effect drawing of Comparative Example 1. It can be seen that the brick surface white pattern area has a red color, and the texture is distorted. Since the whitening glaze is not used in this comparative example, only the white ink cannot completely cover the red color at the bottom.

[0091] Comparative Example 2

[0092] It is basically the same as Example 1, and the only difference is that the glazing process of the digital protection glaze is omitted.

[0093] Figure 4 is the brick surface effect drawing of Comparative Example 2. It can be seen that under the condition of backlight, the matte lines appear in the local area with high ink gray scale of the brick surface at a certain angle, which affects the overall coordination of the version. Since the digital protection glaze is not used in this comparative example, the ordinary color ink cannot completely melt with the whitening glaze below, resulting in the gloss of the local position with high ink gray scale of the brick surface being matte, the hand feeling being rough, and the texture being poor.

[0094] Comparative Example 3

[0095] It is basically the same as Example 1, and the only difference is that the chemical composition of the matte glaze includes: SiO2: 47.44%, Al2O3: 30.68%, Fe2O3: 0.11%, TiO2: 0.06%, CaO: 4.03%, MgO: 2.34%, K2O: 0.57%, Na2O: 4.32%, ZnO: 4.55%, BaO: 0.52%, and loss on ignition: 5.38% by mass percentage.

[0096] The color of the colorant is deviated and the saturation of the color of the surface is low due to the high temperature of the matte glaze and the low transparency.

[0097] Comparative Example 4

[0098] The whitening glaze has a specific gravity of 1.45 g / cm 3 and the application amount of the glaze is 450 g / m 2 .

[0099] Figure 5 is a surface effect diagram of the tile of Comparative Example 4. The application amount of the whitening glaze of the comparative example is high. On the one hand, the residual whitening glaze is too much in the removed area, which affects the color of the removed area. On the other hand, the increase of the application amount of the whitening glaze increases the resistance of the bubble escaping, which causes the glaze bubble on the surface of the tile.

Claims

1. A method for preparing a luxury stone ceramic, characterized by, The preparation method comprises: applying a surface glaze on the surface of the body; The matte color glaze is applied on the surface of the body after the glaze is applied; the matte color glaze is composed of 80-97% of matte glaze and 3-20% of color material in mass percentage; wherein the chemical composition of the matte glaze comprises: SiO2: 40-50%, Al2O3: 23-28%, Fe2O3: 0.1-0.3%, TiO2: 0.1-0.3%, CaO: 6-10%, MgO: 2-5%, K2O: 0.5-2%, Na2O: 2-5%, ZnO: 2-5%, BaO: 0.2-2%, loss on ignition: 5-8% in mass percentage; the specific gravity of the matte color glaze is 1.4-1.6 g / cm 3 , and the glaze application amount is 250-500 g / m 2 ; inkjet printing a color ink pattern on the surface of the body after applying the matte color glaze; the area of the inkjet printed pattern accounts for 20-80% of the total area of the surface of the body; The whitening glaze is applied on the surface of the blank after the ink pattern is removed by inkjet printing; the chemical composition of the whitening glaze comprises, in percentage by mass, SiO2: 40-50%, Al2O3: 18-23%, Fe2O3: 0.1-0.3%, TiO2: 0.1-0.3%, CaO: 6-10%, MgO: 2-5%, K2O: 0.5-3%, Na2O: 2-5%, ZnO: 2-5%, BaO: 3-8%, loss on ignition: 5-8%; the specific gravity of the whitening glaze is 1.2-1.3 g / cm 3 , and the glazing amount is 150-300 g / m 2 ; inkjet printing a color ink pattern on the surface of the body after applying the whitening glaze; The blank body surface is sprayed with a digital protection glaze after the ink color pattern is printed; the chemical composition of the digital protection glaze comprises, in percentage by mass, SiO2: 90%~93%, Al2O3: 3%~5%, TiO2: 0.01%~0.3%, CaO: 0.1%~0.3%, MgO: 0.1%~0.3%, K2O: 0.01%~0.3%, Na2O: 1%~3%, ZnO: 0.2%~1%, and loss on ignition: 2%~5%; the specific gravity of the digital protection glaze is 1~1.3 g / cm 3 , and the glazing amount is 20~60 g / m 2 . firing and polishing the body after applying the digital protection glaze to obtain the luxury stone ceramic; the firing temperature is higher than the melting temperature of the matte glaze; the firing temperature is higher than the melting temperature of the whitening glaze.

2. The method of claim 1, wherein the method further comprises the step of: The matte color glaze is applied by spraying.

3. The method of claim 1, wherein the luxury ceramic is prepared by mixing the ceramic raw material, the ceramic waste, and the natural stone waste, and then sintering the mixture. The whitening glaze is applied by spraying.

4. The method of claim 1, wherein the method further comprises the step of: The chemical composition of the surface glaze comprises, in mass percentage, SiO2: 50-60%, Al2O3: 23-28%, Fe2O3: 0.1-0.3%, TiO2: 0.1-0.3%, CaO: 0.1-0.3%, MgO: 0.1-0.3%, K2O: 3-5%, Na2O: 2-4%, ZrO2: 5-10%, and loss on ignition: 3-5%.

5. The method of claim 1, wherein the luxury ceramic is prepared by the steps of: The face glaze is applied by spraying, and has a specific gravity of 1.4-1.5 g / cm 3 , and a glaze application amount of 450-650 g / m 2 .

6. The method of claim 1, wherein the luxury ceramic is prepared by the steps of: The digital protection glaze is applied by inkjet printing.

7. The method for preparing luxury stone ceramics according to claim 1, characterized in that, The firing temperature is 1150-1210 DEG C, and the firing period is 35-90 minutes.

8. A luxury stone ceramic, characterized by, The luxury stone ceramic is obtained according to the preparation method of the luxury stone ceramic according to any one of claims 1-7.

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