Light-color 3D ceramic rock plate and preparation method thereof

Abstract

The invention discloses a light-color 3D ceramic rock plate and a preparation method thereof. The preparation method comprises the following steps: (1) selecting a green brick: selecting a digitally-aligned full-body white blank with a large size specification as a large plate blank body; (2) applying ground glaze; (3) spraying ink; (4) distributing dry particles by using a flat screen printing machine: respectively applying milky white dry particles, grey white dry particles and green transparent dry particles in three different colors by using the flat screen printing machine, wherein patterns with stereoscopic impression and specific colors are generated by applying the three dry particles; (5) distributing dry granules by using a granule drying machine: distributing transparent high-temperature dry granules on the large plate blank body by using the granule drying machine; and (6) high-temperature firing: feeding into a kiln, and performing high-temperature firing to obtain the light-color 3D ceramic rock plate. According to the prepared light-color 3D ceramic rock plate, high-latitude three-dimensional pattern effect expression is achieved on a large-size plate, the highest three-dimensional fall texture can reach 2.6 mm, the pattern expression freedom degree is higher, and the color life is prolonged by three times.

Description

[0001] and preparation method thereof Technical Field

[0002] The present invention relates to the field of ceramic rock slab processing technology, and in particular to a light-colored 3D ceramic rock slab and a preparation method thereof. Background Art

[0003] As consumers' demand for personalized and artistic decoration increases, the demand for three-dimensional ceramic rock slabs in areas such as background walls, countertops, and furniture veneers has increased significantly. High-end markets (such as hotels and exhibition halls) prefer rock slabs with a strong three-dimensional effect and unique textures.

[0004] To enhance the three-dimensional effect of ceramic tiles, various methods can be used, including digital inkjet, mold pressing, laser engraving, and nanoimprinting. Mainstream companies tend to combine digital inkjet with mold pressing, balancing efficiency and three-dimensional effects. Technologies like laser engraving and nanoimprinting, due to the high equipment investment, are currently mostly used for high-end customization. The mainstream sizes of ceramic tiles currently produced by companies are small and medium-sized: 600×1200mm, 800×1600mm, and 900×1800mm (6-12mm thickness), suitable for common applications such as walls and countertops. Large slabs, in sizes of 1200×2400mm and 1600×3200mm (9-20mm thickness), are often used for high-end background walls and furniture veneers.

[0005] However, the current development status of three-dimensional ceramic tiles still has the following problems:

[0006] 1. There are technical limitations on the size of large panels: Due to factors such as raw material uniformity, pressing by roller kilns and continuous presses, and firing deformation control, domestic companies can stably produce small and medium-sized three-dimensional ceramic tiles. Large-sized 1200×2400mm and 1600×3200mm three-dimensional ceramic tiles (thickness 9-20mm) are still in the experimental stage and cannot meet mass production requirements.

[0007] 2. Deformation of large plates and consistency of surface texture: The larger the plate area, the more difficult it is to control the drying shrinkage thermal stress when applying glaze, ink and other three-dimensional pattern materials, resulting in plate warping, more three-dimensional pattern ghosting defects and texture fractures.

[0008] 3. Cost and yield of large panels: The production yield of three-dimensional ceramic tiles is usually less than 70% (regular sizes can reach more than 90%), and the cost of raw materials and energy consumption increases by 30%-50%. Summary of the Invention

[0009] In order to overcome the shortcomings of the prior art, one of the objects of the present invention is to provide a method for preparing light-colored 3D ceramic rock slabs.

[0010] The second purpose of the present invention is to provide a method for preparing light-colored 3D ceramic rock slabs.

[0011] One of the objectives of the present invention is achieved by the following technical solution: a method for preparing a light-colored 3D ceramic rock plate, comprising the following steps:

[0012] (1) Select bricks: select bricks with a length and width of 1200×2400mm or 1600×3200mm, a thickness of 9-20mm, and digitally aligned white bricks as large slabs;

[0013] (2) Applying bottom glaze: spraying the bottom glaze onto the surface of the large slab to form a bottom glaze layer;

[0014] (3) Inkjet: Prepare off-white ink and use an inkjet machine to print a pattern on the blank according to a preset pattern to form a preset off-white line pattern;

[0015] (4) Flat screen printing machine for applying dry granules: According to the effect of the development layout, a flat screen printing machine is used to apply three different colors of dry granules, namely milky white dry granules, grayish white dry granules, and green transparent dry granules. The application of three layers of dry granules produces a pattern with a three-dimensional sense and a specific color;

[0016] (5) Dry granulation machine: Apply transparent high-temperature dry granules on the large slab body in step (4) through a dry granulation machine;

[0017] (6) High temperature firing: After the dry granular glaze is applied, the large slab is sent into the kiln and fired at high temperature to obtain a light-colored 3D ceramic rock slab.

[0018] Furthermore, in step (1) selecting the brick blank: the large slab blank comprises the following components in parts by weight: 10-15 parts of kaolin, 2-8 parts of bentonite, 20-25 parts of selected sand, 10-25 parts of ultra-white stone particles, 5-20 parts of high white potassium sand, 1-4 parts of calcined talc, 0.5-1.2 parts of debonding agent, and 0.2-1 parts of blank reinforcing agent.

[0019] Furthermore, in step (2) of applying the bottom glaze, the bottom glaze has a specific gravity of 1.45-1.46, and a glaze weight of 90-92 g / 300*600 pan;

[0020] The base glaze is prepared from the following components in parts by weight: 25-30 parts of potassium feldspar, 15-20 parts of sodium feldspar, 10-15 parts of calcined kaolin, 10-15 parts of quartz, 5-8 parts of dolomite, 6-10 parts of calcined aluminum oxide, 2-5 parts of calcined zinc oxide, and 5-8 parts of wollastonite.

[0021] Furthermore, in step (4), the flat screen printing machine is used to print dry particles, the screen frame size of the screen is greater than 3200×1600 mm, and the photosensitive adhesive is coated on the screen on the screen frame, and the pattern hollow area is formed by exposure and development, and the mesh number of the screen is 8-80 meshes.

[0022] Furthermore, in step (4) of applying dry granules on a flat screen printing machine, three flat screen printing machines are used, and three screens with different patterns are prepared to apply three different colors of dry granules, namely, milky white dry granules, grayish white dry granules, and green transparent dry granules respectively; the screen tension of each screen on the flat screen printing machine is controlled to be ≥25N / cm 2 Use vacuum negative pressure to fix each screen to prevent it from sliding during printing. Use a rubber scraper to push the milky white dry particles, grayish white dry particles, and green transparent dry particles on each screen respectively, so that they pass through the mesh evenly and cover the pattern area. The uniform scraping speed of the rubber scraper is controlled to be ≤0.5m / s.

[0023] Furthermore, in step (4) of preparing the flat screen printing machine cloth dry particles, the amount of the milky white dry particles is 550-600 g / m 2 The amount of the gray dry particles is 8-15g / m 2 The green transparent dry granules are used in an amount of 15-25 g / m 2 ;

[0024] The milky white dry particles include the following components in parts by weight: 20-25 parts of sodium feldspar, 10-15 parts of potassium feldspar, 5-10 parts of dolomite, 10-12 parts of barium carbonate, 5-6 parts of calcined zinc oxide, 2-5 parts of calcined aluminum oxide, 10-15 parts of calcined kaolin, 10-15 parts of quartz, 5-7 parts of strontium carbonate, and 15-20 parts of zirconium silicate;

[0025] The off-white dry particles include the following components in parts by weight: 20-25 parts of albite, 10-15 parts of potassium feldspar, 5-10 parts of dolomite, 10-12 parts of barium carbonate, 5-6 parts of calcined zinc oxide, 2-5 parts of calcined aluminum oxide, 10-15 parts of calcined kaolin, 10-15 parts of quartz, 5-7 parts of strontium carbonate, and 5-10 parts of gray colorant;

[0026] The green transparent dry particles include the following components in parts by weight: 20-25 parts of albite, 10-15 parts of potassium feldspar, 5-10 parts of dolomite, 10-12 parts of barium carbonate, 5-6 parts of calcined zinc oxide, 2-5 parts of calcined aluminum oxide, 10-15 parts of calcined kaolin, 10-15 parts of quartz, 5-7 parts of strontium carbonate, and 3-5 parts of green colorant.

[0027] Furthermore, in step (3), alignment marks 1 are printed on the four corners of the large slab body for inkjet printing, and in step (4), alignment marks 2 that match the markings made by the inkjet machine are added to the non-printing area of ​​the screen of the flat screen printing machine. The screen position is adjusted using an X / Y / Z axis fine-tuning device, and the degree of overlap between the screen alignment mark 2 and the tile alignment mark 1 is observed through light transmission. After the first screen printing, the screen position is gradually fine-tuned by measuring the deviation of the pattern edge baseline so that the pattern of each subsequent screen printing is consistent with the pattern of the previous screen printing.

[0028] Furthermore, in step (5) of preparing dry granules in the dry granulator, the amount of the transparent high-temperature dry granules is 320-380 g / m 2 The transparent high-temperature dry particles include the following components in parts by weight: 10-15 parts of albite, 10-15 parts of potassium feldspar, 5-10 parts of dolomite, 10-15 parts of wollastonite, 3-5 parts of barium carbonate, 2-5 parts of calcined alumina, 10-15 parts of calcined kaolin, 15-20 parts of quartz, 13-18 parts of zirconium silicate, and 3-5 parts of borax.

[0029] Furthermore, in step (5), after applying the transparent high-temperature dry granules in the dry granulator, the glue protective glaze is sprayed onto the surface of the large slab body in step (5); the amount of the glue protective glaze is 350-450g / m 2 The glue protective glaze includes the following components in parts by weight: 15-20 parts of nepheline powder, 2-5 parts of calcined alumina, 2-5 parts of dolomite, 23-28 parts of wollastonite, 2-4 parts of barium carbonate, 5-10 parts of calcined kaolin, and 23-28 parts of quartz.

[0030] The second purpose of the present invention is achieved by the following technical solution: a light-colored 3D ceramic rock board, characterized in that it is made by the preparation method of the light-colored 3D ceramic rock board described above.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The light-colored 3D ceramic rock slabs produced by the present invention can achieve high-dimensional three-dimensional graphic effects on large-sized slabs. The three-dimensional drop texture can reach up to 2.6mm, and the pattern expression has a higher degree of freedom. Mineral crystals are used to present colors, subverting the traditional flat ink color development, and realizing colors from the inside out, which are fuller, more delicate, and purer. It accurately restores the original color of natural stone and increases the color life by 3 times.

[0033] Specifically, the present invention achieves the formation of high three-dimensional drop texture mainly through two improvements. On the one hand, multiple layers of dry particles are applied to replace the existing glaze application. On the other hand, the method of applying dry particles is changed, and a multi-plate flat screen printing method and a dry particle machine method are adopted to achieve a variety of shapes of large dry particles, and graphic superposition to produce a three-dimensional pattern with a stronger three-dimensional effect and a more realistic texture.

[0034] In terms of texture expression, the present invention uses a flat screen printing machine with multiple sets of screens designed according to different pattern expression needs. By overprinting a single set of screens for a monochrome pattern or multiple sets of screens for a multi-color pattern, a high degree of freedom of pattern expression is achieved. At the same time, colored dry particles, transparent high-temperature dry particles, and dry particles of different shapes, specifications and sizes are used in combination to present a fusion of color, shape and texture, restore the original color of natural stone, and express it more fully, more delicately and more purely.

[0035] 2. The quality requirements for mass production of large-sized 1200×2400mm and 1600×3200mm three-dimensional ceramic tiles (thickness 9-20mm) have been achieved, breaking the technical limits of large-sized tiles in the industry.

[0036] 3. By controlling various technical conditions, including the control of screen tension, the control of the overlap between the screen mark and the tile mark, the fixation of the screen by vacuum negative pressure, and the control of the uniform scraping speed of the scraper, the difficult problem of large plate deformation and inconsistent surface texture caused by the application of multiple layers of dry granular glaze has been effectively solved.

[0037] 4. Improve the yield rate of large panels and reduce processing costs: The production yield rate of three-dimensional ceramic tiles can reach 85%, and the cost of raw materials and energy consumption is reduced by 20%-30%. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a photo of the light-colored 3D ceramic rock slab according to the preferred embodiment 1 of the present invention;

[0039] Figure 2 This is an enlarged schematic diagram of the light-colored 3D ceramic rock plate of the preferred embodiment 1 of the present invention. Figure 1 ;

[0040] Figure 3 This is an enlarged schematic diagram of the light-colored 3D ceramic rock plate of the preferred embodiment 1 of the present invention. Figure 2 ;

[0041] Figure 4 This is a picture of the defective product of the ceramic rock slab in comparative example 6 of the present invention, whose brick shape is too arched. DETAILED DESCRIPTION

[0042] The present invention will be 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 new embodiments.

[0043] In the present invention, unless otherwise specified, all parts and percentages are by weight, and the equipment and raw materials used are commercially available or commonly used in the art. The methods in the following examples are all conventional methods in the art unless otherwise specified.

[0044] The present invention provides a method for preparing a light-colored 3D ceramic rock plate, comprising the following steps:

[0045] (1) Selecting bricks: Press the ceramic rock slab powder into ceramic rock slab blanks, transport the formed blanks to the drying kiln for drying, spray water after the blanks pass through the drying kiln to maintain surface humidity; select the blanks with length and width specifications of 1200×2400mm or 1600×3200mm, thickness of 9-20mm, and digitally aligned white blanks as large slab blanks;

[0046] Digitally aligned white blanks use white powder as the base material. Through a digitally aligned spreading machine, a powder pattern corresponding to the surface texture is applied. The color of the powder texture in each part corresponds to the color of the upper surface texture, making the bottom and surface texture and color consistent, and more natural.

[0047] As a further preferred embodiment, in step (1) selecting the brick blank, the large slab blank comprises the following components in parts by weight: 10-15 parts of kaolin, 2-8 parts of bentonite, 20-25 parts of selected sand, 10-25 parts of ultra-white stone particles, 5-20 parts of high white potassium sand, 1-4 parts of calcined talc, 0.5-1.2 parts of debonding agent, and 0.2-1 parts of blank reinforcing agent.

[0048] (2) Applying base glaze: spraying base glaze onto the surface of the large slab to form a base glaze layer; the role of the base glaze is to add white base glaze, increase the whiteness of the body, and facilitate the subsequent color development of multiple layers of dry particles.

[0049] As a further preferred embodiment, in step (2) of applying the bottom glaze, the bottom glaze has a specific gravity of 1.45-1.46, and the glaze weight is 90-92 g / 300*600 pan;

[0050] The base glaze is prepared from the following components in parts by weight: 25-30 parts of potassium feldspar, 15-20 parts of sodium feldspar, 10-15 parts of calcined kaolin, 10-15 parts of quartz, 5-8 parts of dolomite, 6-10 parts of calcined aluminum oxide, 2-5 parts of calcined zinc oxide, and 5-8 parts of wollastonite.

[0051] (3) Inkjet: Prepare off-white ink and use an inkjet machine to print a pattern on the blank according to a preset pattern to form a preset off-white line pattern;

[0052] (4) Flat screen printing machine for applying dry granules: According to the effect of the development layout, a flat screen printing machine is used to apply three different colors of dry granules, namely milky white dry granules, grayish white dry granules, and green transparent dry granules. The application of three layers of dry granules produces a pattern with a three-dimensional sense and a specific color;

[0053] As a further preferred embodiment, in step (4), the flat screen printing machine is used to print dry particles, the screen frame size of the screen is greater than 3200×1600 mm, a photosensitive adhesive is coated on the screen on the screen frame, and a pattern hollow area is formed by exposure and development, and the mesh number of the screen is 8-80 meshes.

[0054] As a further preferred solution, in step (4) of applying dry granules on a flat screen printing machine, three flat screen printing machines are used, and three screens with different patterns are prepared to apply three different colors of dry granules, namely, milky white dry granules, grayish white dry granules, and green transparent dry granules respectively; the screen tension of each screen on the flat screen printing machine is controlled to be ≥25N / cm 2 Use vacuum negative pressure to fix each screen to prevent it from sliding during printing. Use a rubber scraper to push the milky white dry particles, grayish white dry particles, and green transparent dry particles on each screen respectively, so that they pass through the mesh evenly and cover the pattern area. The uniform scraping speed of the rubber scraper is controlled to be ≤0.5m / s.

[0055] As a further preferred embodiment, in step (4), the amount of the milky white dry particles used in the flat screen printing machine is 550-600 g / m 2 The amount of the gray dry particles is 8-15g / m 2 The green transparent dry granules are used in an amount of 15-25 g / m 2 ;

[0056] The milky white dry particles include the following components in parts by weight: 20-25 parts of sodium feldspar, 10-15 parts of potassium feldspar, 5-10 parts of dolomite, 10-12 parts of barium carbonate, 5-6 parts of calcined zinc oxide, 2-5 parts of calcined aluminum oxide, 10-15 parts of calcined kaolin, 10-15 parts of quartz, 5-7 parts of strontium carbonate, and 15-20 parts of zirconium silicate;

[0057] The off-white dry particles include the following components in parts by weight: 20-25 parts of albite, 10-15 parts of potassium feldspar, 5-10 parts of dolomite, 10-12 parts of barium carbonate, 5-6 parts of calcined zinc oxide, 2-5 parts of calcined aluminum oxide, 10-15 parts of calcined kaolin, 10-15 parts of quartz, 5-7 parts of strontium carbonate, and 5-10 parts of gray colorant;

[0058] The green transparent dry particles include the following components in parts by weight: 20-25 parts of albite, 10-15 parts of potassium feldspar, 5-10 parts of dolomite, 10-12 parts of barium carbonate, 5-6 parts of calcined zinc oxide, 2-5 parts of calcined aluminum oxide, 10-15 parts of calcined kaolin, 10-15 parts of quartz, 5-7 parts of strontium carbonate, and 3-5 parts of green colorant.

[0059] As a further preferred solution, in step (3), alignment marks 1 are printed on the four corners of the large slab body for inkjet printing, and in step (4), alignment marks 2 that match the markings made by the inkjet machine are added to the non-printing area of ​​the screen of the flat screen printing machine. The screen position is adjusted using an X / Y / Z axis fine-tuning device, and the degree of overlap between the screen alignment mark 2 and the tile alignment mark 1 is observed through light transmission. After the first screen printing, the screen position is gradually fine-tuned by measuring the deviation of the pattern edge baseline so that the pattern of each subsequent screen printing is consistent with the pattern of the previous screen printing.

[0060] In addition, in the graphic expression of the present invention, the pattern of the screen-printed dry particle pattern in step (4) must correspond to the inkjet design pattern of the inkjet machine in step (31) inkjet printing. Different dry particle effects need to be presented on different texture lines, and the alignment problem needs to be solved. Otherwise, the consistency of the tile surface texture, ghosting defects, and texture fractures cannot be expressed. To this end, it is necessary to control various technical conditions, including the control of the screen tension, the control of the overlap between the screen mark and the tile mark, the fixation of the screen plate by vacuum negative pressure, and the control of the uniform scraping speed of the scraper.

[0061] (5) Dry granulation machine: Apply transparent high-temperature dry granules on the large slab body in step (4) through a dry granulation machine;

[0062] As a further preferred embodiment, in step (5) of drying the granules in the granulator, the amount of the transparent high-temperature dry granules is 320-380 g / m 2 The transparent high-temperature dry particles include the following components in parts by weight: 10-15 parts of albite, 10-15 parts of potassium feldspar, 5-10 parts of dolomite, 10-15 parts of wollastonite, 3-5 parts of barium carbonate, 2-5 parts of calcined alumina, 10-15 parts of calcined kaolin, 15-20 parts of quartz, 13-18 parts of zirconium silicate, and 3-5 parts of borax.

[0063] As a further preferred embodiment, in step (5), the dry granules are distributed in a granulator, and the dry granules are of one or more specifications of fine dry granules, coarse dry granules, and flaky dry granules; the particle size of the fine dry granules is 40-80 mesh, the particle size of the coarse dry granules is 8-30 mesh, and the particle size of the flaky dry granules is 5-20 mesh; when distributing fine dry granules, a conventional granulator is used for full-scale distribution, and the distribution is carried out by adjusting the size of the screen at the discharge; when distributing coarse dry granules and / or flaky dry granules, a multi-layer granulator is used for sporadic distribution, and the multi-layer granulator is provided with at least two layers of distribution belts, and the distribution gap of the coarse dry granules and / or flaky dry granules is adjusted by adjusting the transport speed of the distribution belts of each layer and the size of the screen at the discharge.

[0064] In the present invention, the granulator dispensing process requires the production or development of specialized board surfaces, which may require a variety of different specifications of granules, such as fine granules, coarse granules, and flaky granules. Therefore, multiple granulators are installed on the glazing line to meet production and development needs. During the product development phase, some specialized board surfaces require the simultaneous use of multiple granules. However, existing granulators can only dispense one type of granule and are only suitable for dispensing small granules across the entire board. Large granules, however, are typically not fully dispensed due to pattern expression requirements, but rather scattered in desired locations. Therefore, conventional granulators are not suitable for dispensing large granules. Therefore, to dispense a predetermined amount of large granules at the desired locations, the present invention improves the granulator by providing multiple layers of dispensing belts on the granulator, enabling the dispensing of large granules, such as coarse granules and flaky granules, within a single granulator.

[0065] (6) High temperature firing: After the dry granular glaze is applied, the large slab is sent into the kiln and fired at high temperature to obtain a light-colored 3D ceramic rock slab.

[0066] As a further preferred solution, in step (5), after applying the transparent high-temperature dry particles in the dry particle machine, the glue protective glaze is sprayed onto the surface of the large slab body in step (5); the role of the glue protective glaze is to use the glue to adjust the specific gravity of the glaze, so that each layer of dry particles can be strongly attached to the glaze surface and not be absorbed and transferred, thereby improving the three-dimensional stereoscopic graphic expression effect.

[0067] The amount of the glue protective glaze is 350-450g / m 2 The glue protective glaze includes the following components in parts by weight: 15-20 parts of nepheline powder, 2-5 parts of calcined alumina, 2-5 parts of dolomite, 23-28 parts of wollastonite, 2-4 parts of barium carbonate, 5-10 parts of calcined kaolin, and 23-28 parts of quartz.

[0068] As a further preferred embodiment, the preparation method of the light-colored 3D ceramic rock plate is further provided with three drying stages, namely, the first drying stage, the second drying stage, and the third drying stage. The first drying stage is set between steps (2) and (3), the second drying stage is set between steps (3) and (4), and the third drying stage is set between steps (5) and (6). The drying temperature of the first stage is 90-110°C, and the drying temperatures of the second and third stages are both 140-160°C; the drying time of each stage is 1-3 minutes.

[0069] In the manufacturing process of the present invention, the ceramic rock slab is prone to cracking after firing. After many tests, the production department finally needs to solve the edge cracking problem by adjusting the moisture content of large-particle dry granular glaze and adjusting the drying temperature. Specifically, adjusting the drying temperature can discharge the moisture in the dry granular glaze. After the brick is glazed, the moisture in the dry granular glaze is absorbed by the brick. The brick that absorbs moisture will be deformed due to thermal expansion and contraction. The deformed brick is prone to cracking during belt transportation. The present application adjusts the moisture content of the brick in different stages to control the moisture content entering the kiln to below 1.5%, avoiding excessive moisture entering the kiln to cause explosion of the brick and reduce the product yield. The present invention is provided with three drying sections, and each drying section needs to adjust the overall board according to different dry particle formulas.

[0070] The present invention achieves three-dimensional patterns mainly through two improvements. On the one hand, multiple layers of dry granules are applied to replace the existing glaze application. On the other hand, the method of applying the dry granules is changed to adopt a multi-plate flat screen printing method and a dry granulation machine to apply the dry granules. This allows large dry granules to be applied in a variety of shapes and patterns to be superimposed to produce a three-dimensional pattern with a stronger three-dimensional effect and a more realistic texture. Specifically, this is achieved by applying the dry granules in step (4) of the flat screen printing machine and applying the dry granules in step (5) of the dry granulation machine.

[0071] The present invention also provides a light-colored 3D ceramic rock plate, which is made by the preparation method of the light-colored 3D ceramic rock plate as described above.

[0072] 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.

[0073] Example 1

[0074] like Figure 1-3 As shown, a light-colored 3D ceramic rock plate is made by the following preparation method of the light-colored 3D ceramic rock plate, comprising the following steps:

[0075] (1) Selection of bricks: Select white bricks with a length and width of 1600×3200 mm and a thickness of 12 mm as large slabs; the large slabs include the following components in parts by weight: 12 parts of kaolin, 5 parts of bentonite, 22 parts of selected sand, 18 parts of ultra-white stone particles, 15 parts of high white potassium sand, 3 parts of burned talc, 0.8 parts of debonding agent, and 0.7 parts of body reinforcing agent.

[0076] (2) Applying bottom glaze: spraying bottom glaze onto the surface of the large slab to form a bottom glaze layer; the bottom glaze has a specific gravity of 1.45 and a glaze weight of 91 g / 300*600 plate; the bottom glaze is prepared from the following components in parts by weight: 28 parts of potassium feldspar, 18 parts of sodium feldspar, 12 parts of calcined kaolin, 13 parts of quartz, 6 parts of dolomite, 8 parts of calcined alumina, 4 parts of calcined zinc oxide, and 6 parts of wollastonite.

[0077] (3) Inkjet: Prepare off-white ink and use an inkjet machine to print a pattern on the blank according to a preset pattern to form a preset off-white line pattern;

[0078] (4) Flatbed screen printing machine cloth dry particles: select a screen frame size larger than 3200×1600mm, apply photosensitive glue to the screen on the screen frame, and form a pattern hollow area through exposure and development. The mesh number of the screen is 8-30 mesh;

[0079] According to the effect of the developed layout, three screens with different patterns were prepared, and three different colors of dry particles, milky white dry particles, grayish white dry particles, and green transparent dry particles, were applied using a flat screen printing machine. During the screen printing process, the screen tension of each screen on the flat screen printing machine was controlled to be 27N / cm 2 ; Use vacuum negative pressure to fix each screen to prevent it from sliding during printing. Use a rubber scraper to push the milky white dry particles, grayish white dry particles, and green transparent dry particles on each screen respectively, so that they pass through the mesh evenly and cover the pattern area. Among them, the rubber scraper is controlled to have a uniform scraping speed of 0.45m / s. After three layers of dry particles, a pattern with a three-dimensional sense and a specific color is produced.

[0080] Wherein, the amount of the milky white dry granules is 571g / m 2 The amount of the gray dry particles is 11g / m 2 The green transparent dry granules are used in an amount of 21 g / m 2The milky white dry granules include the following components in parts by weight: 22 parts of sodium feldspar, 12 parts of potassium feldspar, 8 parts of dolomite, 11 parts of barium carbonate, 5.5 parts of calcined zinc oxide, 4 parts of calcined aluminum oxide, 12 parts of calcined kaolin, 13 parts of quartz, 6 parts of strontium carbonate, and 18 parts of zirconium silicate; the grayish white dry granules include the following components in parts by weight: 23 parts of sodium feldspar, 13 parts of potassium feldspar, 8 parts of dolomite, 11 parts of barium carbonate, 5.5 parts of calcined zinc oxide, 4 parts of calcined aluminum oxide, 12 parts of calcined kaolin, 13 parts of quartz, 6 parts of strontium carbonate, and 8 parts of gray colorant; the green transparent dry particles include the following components in parts by weight: 23 parts of albite, 13 parts of potassium feldspar, 8 parts of dolomite, 11 parts of barium carbonate, 5.5 parts of calcined zinc oxide, 4 parts of calcined aluminum oxide, 12 parts of calcined kaolin, 13 parts of quartz, 6 parts of strontium carbonate, and 4 parts of green colorant.

[0081] In order to ensure that the pattern does not deform or have ghosting during screen printing, in step (3), the four corners of the large plate blank are inkjet printed with alignment marks 1, and in step (4), the non-printing area of ​​the screen of the flat screen printing machine is added with alignment marks 2 that match the markings of the inkjet machine. The screen position is adjusted using the X / Y / Z axis fine-tuning device, and the overlap between the screen alignment mark 2 and the tile alignment mark 1 is observed through light transmission. After the first screen printing, the screen position is gradually fine-tuned by measuring the deviation of the pattern edge baseline so that the pattern of each subsequent screen printing is consistent with the pattern of the previous screen printing.

[0082] (5) Dry granulation machine: transparent high-temperature dry granules are spread on the large plate body in step (4) through a dry granulation machine; in this scheme, the transparent high-temperature dry granules are fine dry granules and flaky dry granules; when spreading fine dry granules, a conventional dry granulation machine is used for full-plate spreading, and the screen size at the discharge point is 45-55 mesh; when spreading coarse dry granules, a multi-layer dry granulation machine is used for sporadic spreading, and the multi-layer dry granulation machine is provided with two layers of cloth belts, and the flaky dry granules are spread on the cloth belts. By adjusting the conveying speed of the cloth belts of each layer and the screen size (25-35 mesh) at the discharge point, the need for adjusting the distribution gap of the coarse dry granules can be met.

[0083] Among them, the amount of the transparent high-temperature dry particles is 360g / m 2 The transparent high-temperature dry particles include the following components in parts by weight: 13 parts of sodium feldspar, 12 parts of potassium feldspar, 8 parts of dolomite, 12 parts of wollastonite, 4 parts of barium carbonate, 3 parts of calcined alumina, 12 parts of calcined kaolin, 18 parts of quartz, 15 parts of zirconium silicate, and 4 parts of borax.

[0084] After applying the transparent high temperature dry particles, spray the glue protective glaze onto the surface of the large slab body in step (5); the amount of the glue protective glaze is 395g / m 2The glue protective glaze includes the following components in parts by weight: 18 parts of nepheline powder, 4 parts of calcined alumina, 3.5 parts of dolomite, 25 parts of wollastonite, 3 parts of barium carbonate, 8 parts of calcined kaolin, and 26 parts of quartz.

[0085] The preparation method of the light-colored 3D ceramic rock plate also has three drying stages, namely the first drying stage, the second drying stage, and the third drying stage. The first drying stage is set between steps (2) and (3), the second drying stage is set between steps (3) and (4), and the third drying stage is set between steps (5) and (6). The drying temperature of the first stage is 98°C, and the drying temperatures of the second and third stages are both 150°C; the drying time of each stage is 1-3 minutes.

[0086] (6) High temperature firing: After the dry granular glaze is applied, the large slab is sent into the kiln and fired at high temperature to obtain a light-colored 3D ceramic rock slab.

[0087] Example 2

[0088] A light-colored 3D ceramic rock plate is produced by the following preparation method of the light-colored 3D ceramic rock plate, comprising the following steps:

[0089] (1) Selection of bricks: Select white bricks with a length and width of 1200×2400 mm and a thickness of 12 mm as large slabs; the large slabs include the following components in parts by weight: 10 parts of kaolin, 8 parts of bentonite, 20 parts of selected sand, 10 parts of ultra-white stone particles, 20 parts of high white potassium sand, 4 parts of burned talc, 1.2 parts of debonding agent, and 1 part of brick reinforcing agent.

[0090] (2) Applying bottom glaze: spraying bottom glaze onto the surface of the large slab to form a bottom glaze layer; the bottom glaze has a specific gravity of 1.45 and a glaze weight of 90 g / 300*600 plate; the bottom glaze is prepared from the following components in parts by weight: 25 parts of potassium feldspar, 20 parts of sodium feldspar, 10 parts of calcined kaolin, 10 parts of quartz, 5 parts of dolomite, 10 parts of calcined alumina, 2 parts of calcined zinc oxide, and 5 parts of wollastonite.

[0091] (3) Inkjet: Prepare off-white ink and use an inkjet machine to print a pattern on the blank according to a preset pattern to form a preset off-white line pattern;

[0092] (4) Flatbed screen printing machine cloth dry particles: select a screen frame size larger than 3200×1600mm, apply photosensitive glue to the screen on the screen frame, and form a pattern hollow area through exposure and development. The mesh number of the screen is 60-80 mesh;

[0093] According to the effect of the developed layout, three screens with different patterns were prepared, and three different colors of dry particles, milky white dry particles, grayish white dry particles, and green transparent dry particles, were applied using a flat screen printing machine. During the screen printing process, the screen tension of each screen on the flat screen printing machine was controlled to be 26N / cm 2 ; Use vacuum negative pressure to fix each screen to prevent it from sliding during printing. Use a rubber scraper to push the milky white dry particles, grayish white dry particles, and green transparent dry particles on each screen respectively, so that they pass through the mesh evenly and cover the pattern area. Among them, the rubber scraper is controlled to have a uniform scraping speed of 0.4m / s. After three layers of dry particles, a pattern with a three-dimensional effect and a specific color is produced.

[0094] Wherein, the amount of the milky white dry granules is 550g / m 2 The amount of the gray dry particles is 8g / m 2 The green transparent dry granules are used in an amount of 15 g / m 2 The milky white dry granules include the following components in parts by weight: 20 parts of albite, 10 parts of potassium feldspar, 10 parts of dolomite, 10 parts of barium carbonate, 5 parts of calcined zinc oxide, 2 parts of calcined alumina, 10 parts of calcined kaolin, 10 parts of quartz, 5 parts of strontium carbonate, and 15 parts of zirconium silicate; the grayish white dry granules include the following components in parts by weight: 20 parts of albite, 15 parts of potassium feldspar, 10 parts of dolomite, and 12 parts of barium carbonate. , 6 parts of calcined zinc oxide, 5 parts of calcined alumina, 15 parts of calcined kaolin, 15 parts of quartz, 7 parts of strontium carbonate, and 10 parts of gray colorant; the green transparent dry particles include the following components in parts by weight: 20 parts of albite, 10 parts of potassium feldspar, 5 parts of dolomite, 10 parts of barium carbonate, 5 parts of calcined zinc oxide, 2 parts of calcined alumina, 10 parts of calcined kaolin, 10 parts of quartz, 7 parts of strontium carbonate, and 3 parts of green colorant.

[0095] In order to ensure that the pattern does not deform or have ghosting during screen printing, in step (3), the four corners of the large plate blank are inkjet printed with alignment marks 1, and in step (4), the non-printing area of ​​the screen of the flat screen printing machine is added with alignment marks 2 that match the markings of the inkjet machine. The screen position is adjusted using the X / Y / Z axis fine-tuning device, and the overlap between the screen alignment mark 2 and the tile alignment mark 1 is observed through light transmission. After the first screen printing, the screen position is gradually fine-tuned by measuring the deviation of the pattern edge baseline so that the pattern of each subsequent screen printing is consistent with the pattern of the previous screen printing.

[0096] (5) Dry granulation machine: transparent high-temperature dry granules are spread on the large plate body in step (4) through a dry granulation machine; in this scheme, the transparent high-temperature dry granules are fine dry granules and flaky dry granules; when spreading fine dry granules, a conventional dry granulation machine is used for full-plate spreading, and the screen size at the discharge point is 40-55 mesh; when spreading coarse dry granules, a multi-layer dry granulation machine is used for sporadic spreading, and the multi-layer dry granulation machine is provided with two layers of cloth belts, and the coarse dry granules are spread on the cloth belts. By adjusting the conveying speed of the cloth belts of each layer and the screen size (20-35 mesh) at the discharge point, the need for adjusting the distribution gap of the coarse dry granules can be met.

[0097] Among them, the amount of the transparent high-temperature dry particles is 320g / m 2 The transparent high-temperature dry particles include the following components in parts by weight: 10 parts of sodium feldspar, 10 parts of potassium feldspar, 5 parts of dolomite, 10 parts of wollastonite, 3 parts of barium carbonate, 2 parts of calcined alumina, 10 parts of calcined kaolin, 15 parts of quartz, 13-18 parts of zirconium silicate, and 3 parts of borax.

[0098] After applying the transparent high temperature dry particles, spray the glue protective glaze onto the surface of the large slab body in step (5); the amount of the glue protective glaze is 350g / m 2 The glue protective glaze includes the following components in parts by weight: 15 parts of nepheline powder, 2 parts of calcined alumina, 2 parts of dolomite, 23 parts of wollastonite, 2 parts of barium carbonate, 5 parts of calcined kaolin, and 23 parts of quartz.

[0099] The preparation method of the light-colored 3D ceramic rock plate also has three drying stages, namely the first drying stage, the second drying stage, and the third drying stage. The first drying stage is set between steps (2) and (3), the second drying stage is set between steps (3) and (4), and the third drying stage is set between steps (5) and (6). The drying temperature of the first stage is 90°C, and the drying temperatures of the second and third stages are both 140°C; the drying time of each stage is 1-3 minutes.

[0100] (6) High temperature firing: After the dry granular glaze is applied, the large slab is sent into the kiln and fired at high temperature to obtain a light-colored 3D ceramic rock slab.

[0101] Example 3

[0102] A light-colored 3D ceramic rock plate is produced by the following preparation method of the light-colored 3D ceramic rock plate, comprising the following steps:

[0103] (1) Selection of bricks: Select white bricks with dimensions of 1600×3200 mm in length and width, thickness of 9-20 mm, and digital alignment as large slabs; the large slabs include the following components in parts by weight: 15 parts of kaolin, 8 parts of bentonite, 25 parts of selected sand, 25 parts of ultra-white stone particles, 20 parts of high white potassium sand, 4 parts of burned talc, 1.2 parts of debonding agent, and 1 part of brick reinforcing agent.

[0104] (2) Applying bottom glaze: spraying the bottom glaze onto the surface of the large slab to form a bottom glaze layer; the bottom glaze has a specific gravity of 1.46 and a glaze weight of 92 g / 300*600 plate; the bottom glaze is prepared from the following components in parts by weight: 30 parts of potassium feldspar, 20 parts of sodium feldspar, 15 parts of calcined kaolin, 15 parts of quartz, 8 parts of dolomite, 10 parts of calcined alumina, 5 parts of calcined zinc oxide, and 8 parts of wollastonite.

[0105] (3) Inkjet: Prepare off-white ink and use an inkjet machine to print a pattern on the blank according to a preset pattern to form a preset off-white line pattern;

[0106] (4) Flatbed screen printing machine cloth dry particles: select a screen frame size larger than 3200×1600mm, apply photosensitive glue to the screen on the screen frame, and form a pattern hollow area through exposure and development. The mesh number of the screen is 8-35 mesh;

[0107] According to the effect of the developed layout, three screens with different patterns were prepared, and three different colors of dry particles, milky white dry particles, grayish white dry particles, and green transparent dry particles, were applied using a flat screen printing machine. During the screen printing process, the screen tension of each screen on the flat screen printing machine was controlled to be 28N / cm 2 ; Use vacuum negative pressure to fix each screen to prevent it from sliding during printing. Use a rubber scraper to push the milky white dry particles, grayish white dry particles, and green transparent dry particles on each screen respectively, so that they pass through the mesh evenly and cover the pattern area. Among them, the rubber scraper is controlled to have a uniform scraping speed of 0.3m / s. After three layers of dry particles, a pattern with a three-dimensional sense and a specific color is produced.

[0108] Wherein, the amount of the milky white dry granules is 600g / m 2 The amount of the gray dry particles is 15g / m 2 The green transparent dry granules are used in an amount of 25 g / m 2The milky white dry granules include the following components in parts by weight: 25 parts of sodium feldspar, 15 parts of potassium feldspar, 10 parts of dolomite, 12 parts of barium carbonate, 6 parts of calcined zinc oxide, 5 parts of calcined aluminum oxide, 15 parts of calcined kaolin, 15 parts of quartz, 7 parts of strontium carbonate, and 20 parts of zirconium silicate; the grayish white dry granules include the following components in parts by weight: 25 parts of sodium feldspar, 15 parts of potassium feldspar, 10 parts of dolomite, and 12 parts of barium carbonate. , 6 parts of calcined zinc oxide, 5 parts of calcined alumina, 15 parts of calcined kaolin, 15 parts of quartz, 7 parts of strontium carbonate, and 10 parts of gray colorant; the green transparent dry particles include the following components in parts by weight: 25 parts of albite, 15 parts of potassium feldspar, 10 parts of dolomite, 12 parts of barium carbonate, 6 parts of calcined zinc oxide, 5 parts of calcined alumina, 15 parts of calcined kaolin, 15 parts of quartz, 7 parts of strontium carbonate, and 5 parts of green colorant.

[0109] In order to ensure that the pattern does not deform or have ghosting during screen printing, in step (3), the four corners of the large plate blank are inkjet printed with alignment marks 1, and in step (4), the non-printing area of ​​the screen of the flat screen printing machine is added with alignment marks 2 that match the markings of the inkjet machine. The screen position is adjusted using the X / Y / Z axis fine-tuning device, and the overlap between the screen alignment mark 2 and the tile alignment mark 1 is observed through light transmission. After the first screen printing, the screen position is gradually fine-tuned by measuring the deviation of the pattern edge baseline so that the pattern of each subsequent screen printing is consistent with the pattern of the previous screen printing.

[0110] (5) Dry granulation machine: transparent high-temperature dry granules are spread on the large plate body in step (4) through a dry granulation machine; in this scheme, the transparent high-temperature dry granules are fine dry granules and flaky dry granules; when spreading fine dry granules, a conventional dry granulation machine is used for full-plate spreading, and the screen size at the discharge point is 40-55 mesh; when spreading coarse dry granules, a multi-layer dry granulation machine is used for sporadic spreading, and the multi-layer dry granulation machine is provided with two layers of cloth belts, and the coarse dry granules are spread on the cloth belts. By adjusting the conveying speed of the cloth belts of each layer and the screen size (40-50 mesh) at the discharge point, the need for adjusting the distribution gap of the coarse dry granules can be met.

[0111] Among them, the amount of the transparent high-temperature dry particles is 380g / m 2 The transparent high-temperature dry particles include the following components in parts by weight: 15 parts of sodium feldspar, 15 parts of potassium feldspar, 10 parts of dolomite, 15 parts of wollastonite, 5 parts of barium carbonate, 5 parts of calcined alumina, 15 parts of calcined kaolin, 20 parts of quartz, 18 parts of zirconium silicate, and 5 parts of borax.

[0112] After applying the transparent high temperature dry particles, spray the glue protective glaze onto the surface of the large slab body in step (5); the amount of the glue protective glaze is 450g / m 2The glue protective glaze includes the following components in parts by weight: 20 parts of nepheline powder, 5 parts of calcined alumina, 5 parts of dolomite, 28 parts of wollastonite, 4 parts of barium carbonate, 10 parts of calcined kaolin, and 28 parts of quartz.

[0113] The preparation method of the light-colored 3D ceramic rock plate also has three drying stages, namely the first drying stage, the second drying stage, and the third drying stage. The first drying stage is set between steps (2) and (3), the second drying stage is set between steps (3) and (4), and the third drying stage is set between steps (5) and (6). The drying temperature of the first stage is 110°C, and the drying temperatures of the second and third stages are both 160°C; the drying time of each stage is 1-3 minutes.

[0114] (6) High temperature firing: After the dry granular glaze is applied, the large slab is sent into the kiln and fired at high temperature to obtain a light-colored 3D ceramic rock slab.

[0115] Comparative Example 1

[0116] Compared with the light-colored 3D ceramic rock plate manufacturing process of Example 1, the difference is that in step (4) of the flat screen printing machine cloth dry particles, the screen tension is 24N / cm 2， , the remaining conditions are the same as in Example 1.

[0117] Comparative Example 2

[0118] Compared with the light-colored 3D ceramic rock plate manufacturing process of Example 1, the difference is that in step (4) of the flat screen printing machine cloth dry particles, the screen alignment step is missing, and the other conditions are the same as those of Example 1.

[0119] Comparative Example 3

[0120] Compared with the light-colored 3D ceramic rock plate manufacturing process of Example 1, the difference is that in step (4) of the flat screen printing machine spreading dry particles, the screen printing dry particle process lacks the step of fixing the screen with vacuum negative pressure, and the other conditions are the same as those of Example 1.

[0121] Comparative Example 4

[0122] Compared with the light-colored 3D ceramic rock slab production process of Example 1, the difference is that in step (4), the flat screen printing machine is used to dry the particles, and the scraper is controlled to have a uniform scraping speed of 0.6 m / s. The other conditions are the same as those of Example 1.

[0123] Comparative Example 5

[0124] Compared with the light-colored 3D ceramic rock plate manufacturing process of Example 1, the difference is that in step (4), the flat screen printing machine cloth dry particles are replaced with conventional liquid screen printing glaze instead of the solid granular screen printing dry particles of the present invention, and the other conditions are the same as those of Example 1. Among them, the conventional screen printing glaze formula includes the following components in parts by weight: 22 parts of sodium feldspar, 123 parts of potassium feldspar, 8 parts of dolomite, 12 parts of wollastonite, 9 parts of barium carbonate, 8 parts of calcined alumina, 13 parts of calcined kaolin, and 18 parts of quartz. The particle size of the screen printing glaze is 100-200 mesh.

[0125] Comparative Example 6

[0126] Compared with the light-colored 3D ceramic rock board manufacturing process of Example 1, the difference is that in step (5) of the dry granulator, conventional transparent dry granules are used instead of the transparent high-temperature dry granules of the present invention, and the other conditions are the same as those of Example 1. Among them, the conventional transparent dry granule formula includes the following components in parts by weight: 15 parts of albite, 12 parts of potassium feldspar, 13 parts of nepheline feldspar, 8 parts of dolomite, 8 parts of barium carbonate, 4 parts of calcined zinc oxide, 3 parts of calcined aluminum oxide, 8 parts of calcined kaolin, 12 parts of quartz, and 8 parts of strontium carbonate.

[0127] Comparative Example 7

[0128] Compared with the light-colored 3D ceramic rock slab production process of Example 1, the difference is that in the three-stage drying process of the glaze line, the second drying process is missing.

[0129] Comparative Example 8

[0130] Compared with the light-colored 3D ceramic rock slab production process of Example 1, the difference is that among the three small drying stages on the glaze line, the third drying process is missing.

[0131] Effect evaluation and performance testing

[0132] The performance of the light-colored 3D ceramic rock slabs of Example 1 and Comparative Examples 1-8 were tested. The test items and results are shown in Table 1.

[0133] 1. Texture deformation and ghosting of large plate patterns: This refers to observing the texture pattern of the fired ceramic rock plate to see whether it is inconsistent with the pre-examination pattern and whether ghosting occurs.

[0134] 2. Edge cracks of the plate: This refers to the visual inspection of the fired ceramic rock plate to observe whether there are cracks or obvious gaps around the edge of the plate.

[0135] 3. Brick-shaped bending and arching: This refers to visual inspection of the fired ceramic rock slab to see if there is any deformation, warping, etc. around the edge of the slab.

[0136] Table 1 shows the performance test data of the ceramic rock slabs in each example

[0137] Large board pattern texture distortion and ghosting Plate edge cracks Brick-shaped curved arch Example 1 The pattern texture has no deformation or ghosting No Boundary Crack Brick-shaped non-bend arch Comparative Example 1 Slight distortion, ghosting No Boundary Crack Brick-shaped non-bend arch Comparative Example 2 Slight distortion, ghosting No Boundary Crack Brick-shaped non-bend arch Comparative Example 3 Slight distortion, ghosting No Boundary Crack Brick-shaped non-bend arch Comparative Example 4 Slight distortion, ghosting No Boundary Crack Brick-shaped non-bend arch Comparative Example 6 The pattern texture has no deformation or ghosting No Boundary Crack Brick-shaped curved arch Comparative Example 7 The pattern texture has no deformation or ghosting Edge cracks Brick-shaped non-bend arch Comparative Example 8 The pattern texture has no deformation or ghosting Edge cracks Brick-shaped non-bend arch

[0138] The light-colored 3D ceramic rock panels produced in Examples 1-3 of the present invention have a more three-dimensional graphic effect, and the three-dimensional drop texture can reach up to 2.6 mm, and the pattern expression has a higher degree of freedom. Mineral crystals are used to present colors, subverting the traditional flat ink color development, and realizing color from the inside out, which is fuller, more delicate, and purer, accurately restoring the original color of natural stone.

[0139] Compared with Example 1, the difference between Comparative Examples 1-4 is that in step (4), the screen tension is less than 25N / cm 2 , lack of (42) screen alignment step, lack of vacuum negative pressure fixing screen step, control of scraper uniform scraping speed of 0.6m / s, the pattern of the ceramic rock plate produced showed slight texture deformation and ghosting.

[0140] Compared with Example 1, the difference of Comparative Example 5 is that, in step (4), conventional liquid screen printing glaze is used instead of the solid granular screen printing dry particles of the present invention in the flat screen printing machine, and glaze dripping occurs, making it impossible for the product to produce pattern expression, and the expansion coefficient of the dry particles is small, resulting in the brick shape becoming arched after the brick is fired.

[0141] Compared with Example 1, the difference of Comparative Example 6 is that in step (5) of the dry granulator, the conventional transparent dry granule formula is used instead of the transparent dry granule formula of the present invention, and the ceramic rock plate obtained has an arched shape on the brick shape, such as Figure 4 The qualified brick shape requirement is: the long side of the ceramic tile slab is placed vertically on the flat ground, and the thickness gauge is inserted between the brick arm and the standard part. The thickness of the gauge is required to be no more than 0.6mm.

[0142] Compared with Example 1, the difference in the formula of Comparative Examples 7-8 is that in the three-stage drying process of the glaze line, the second drying stage or the third drying stage is missing, and the resulting ceramic rock slabs exhibit edge cracking after firing.

[0143] The above 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 replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A method for preparing a light-colored 3D ceramic rock plate, characterized in that: The steps include: (1) Select bricks: select bricks with a length and width of 1200×2400mm or 1600×3200mm, a thickness of 9-20mm, and digitally aligned white bricks as large slabs; (2) Applying bottom glaze: spraying the bottom glaze onto the surface of the large slab to form a bottom glaze layer; (3) Inkjet: Prepare off-white ink and use an inkjet machine to print a pattern on the blank according to a preset pattern to form a preset off-white line pattern; (4) Flat screen printing machine for applying dry granules: According to the effect of the development layout, a flat screen printing machine is used to apply three different colors of dry granules, namely milky white dry granules, grayish white dry granules, and green transparent dry granules. The application of three layers of dry granules produces a pattern with a three-dimensional sense and a specific color; (5) Dry granulation machine: Apply transparent high-temperature dry granules on the large slab body in step (4) through the dry granulation machine; (6) High temperature firing: After the dry granular glaze is applied, the large slab is sent into the kiln and fired at high temperature to obtain a light-colored 3D ceramic rock slab.

2. The method for preparing the light-colored 3D ceramic rock plate according to claim 1, characterized in that: In step (1) selecting the brick: the large slab body includes the following components in parts by weight: 10-15 parts of kaolin, 2-8 parts of bentonite, 20-25 parts of selected sand, 10-25 parts of ultra-white stone particles, 5-20 parts of high white potassium sand, 1-4 parts of calcined talc, 0.5-1.2 parts of debonding agent, and 0.2-1 parts of body reinforcing agent.

3. The method for preparing the light-colored 3D ceramic rock plate according to claim 1, characterized in that: In step (2) of applying the bottom glaze, the bottom glaze has a specific gravity of 1.45-1.46 and a glaze weight of 90-92 g / 300×600 pan; The base glaze is prepared from the following components in parts by weight: 25-30 parts of potassium feldspar, 15-20 parts of sodium feldspar, 10-15 parts of calcined kaolin, 10-15 parts of quartz, 5-8 parts of dolomite, 6-10 parts of calcined aluminum oxide, 2-5 parts of calcined zinc oxide, and 5-8 parts of wollastonite.

4. The method for preparing the light-colored 3D ceramic rock plate according to claim 1, characterized in that: In step (4), the flat screen printing machine is used to print dry particles. The screen frame size of the screen is greater than 3200×1600 mm. A photosensitive adhesive is applied to the screen on the screen frame. A pattern hollow area is formed by exposure and development. The mesh number of the screen is 8-80 meshes.

5. The method for preparing the light-colored 3D ceramic rock plate according to claim 1, characterized in that: In step (4) of applying dry granules on a flat screen printing machine, three flat screen printing machines are used, and three screens with different patterns are prepared to apply three different colors of dry granules, namely, milky white dry granules, grayish white dry granules, and green transparent dry granules respectively; the screen tension of each screen on the flat screen printing machine is controlled to be ≥25N / cm 2 Use vacuum negative pressure to fix each screen to prevent it from sliding during printing. Use a rubber scraper to push the milky white dry particles, grayish white dry particles, and green transparent dry particles on each screen respectively, so that they pass through the mesh evenly and cover the pattern area. The uniform scraping speed of the rubber scraper is controlled to be ≤0.5m / s.

6. The method for preparing the light-colored 3D ceramic rock plate according to claim 1, characterized in that: In step (4) of flat screen printing machine cloth dry particles, the amount of the milky white dry particles is 550-600g / m 2 The amount of the gray dry particles is 8-15g / m 2 The green transparent dry granules are used in an amount of 15-25 g / m 2 ; The milky white dry particles include the following components in parts by weight: 20-25 parts of sodium feldspar, 10-15 parts of potassium feldspar, 5-10 parts of dolomite, 10-12 parts of barium carbonate, 5-6 parts of calcined zinc oxide, 2-5 parts of calcined aluminum oxide, 10-15 parts of calcined kaolin, 10-15 parts of quartz, 5-7 parts of strontium carbonate, and 15-20 parts of zirconium silicate; The off-white dry particles include the following components in parts by weight: 20-25 parts of albite, 10-15 parts of potassium feldspar, 5-10 parts of dolomite, 10-12 parts of barium carbonate, 5-6 parts of calcined zinc oxide, 2-5 parts of calcined aluminum oxide, 10-15 parts of calcined kaolin, 10-15 parts of quartz, 5-7 parts of strontium carbonate, and 5-10 parts of gray colorant; The green transparent dry particles include the following components in parts by weight: 20-25 parts of albite, 10-15 parts of potassium feldspar, 5-10 parts of dolomite, 10-12 parts of barium carbonate, 5-6 parts of calcined zinc oxide, 2-5 parts of calcined aluminum oxide, 10-15 parts of calcined kaolin, 10-15 parts of quartz, 5-7 parts of strontium carbonate, and 3-5 parts of green colorant.

7. The method for preparing the light-colored 3D ceramic rock plate according to claim 1, characterized in that: In step (3), inkjet print alignment marks 1 on the four corners of the large slab body for inkjet printing. In step (4), add alignment marks 2 that match the markings made by the inkjet machine to the non-printing area of ​​the screen of the flat screen printing machine. Use the X / Y / Z axis fine-tuning device to adjust the screen position. Observe the overlap between the screen alignment mark 2 and the tile alignment mark 1 through light transmission. After the first screen printing, the screen position is gradually fine-tuned by measuring the deviation of the pattern edge baseline so that the pattern of each subsequent screen printing is consistent with the pattern of the previous screen printing.

8. The method for preparing the light-colored 3D ceramic rock plate according to claim 1, characterized in that: In step (5) of drying granules in the granulator, the amount of the transparent high-temperature dry granules is 320-380 g / m 2 The transparent high-temperature dry particles include the following components in parts by weight: 10-15 parts of albite, 10-15 parts of potassium feldspar, 5-10 parts of dolomite, 10-15 parts of wollastonite, 3-5 parts of barium carbonate, 2-5 parts of calcined alumina, 10-15 parts of calcined kaolin, 15-20 parts of quartz, 13-18 parts of zirconium silicate, and 3-5 parts of borax.

9. The method for preparing the light-colored 3D ceramic rock plate according to claim 1, characterized in that: In step (5), after applying the transparent high-temperature dry granules in the dry granulator, the glue protective glaze is sprayed onto the surface of the large slab body in step (5); the amount of the glue protective glaze is 350-450g / m 2 The glue protective glaze includes the following components in parts by weight: 15-20 parts of nepheline powder, 2-5 parts of calcined alumina, 2-5 parts of dolomite, 23-28 parts of wollastonite, 2-4 parts of barium carbonate, 5-10 parts of calcined kaolin, and 23-28 parts of quartz.

10. A light-colored 3D ceramic rock plate, characterized in that: It is made by the preparation method of the light-colored 3D ceramic rock slab as described in any one of claims 1 to 9.

Images