Blue-series bright-surface ceramic rock plate and preparation method thereof

Abstract

The invention discloses a blue-series bright-surface ceramic rock plate and a preparation method thereof. The preparation method of the ceramic rock plate comprises the following steps: (1) selecting a green brick: selecting a digitally-aligned whole-body blue brick with a large size specification as a large plate blank body; (2) applying ground coat; (3) spraying ink; (4) distributing dry particles by adopting a plurality of flat screen printing machines: applying blue and colored crystal mixed dry particles by adopting a plurality of flat screen printing machines; (5) distributing dry granules by using two granule drying machines: distributing blue coarse dry granules and flaky dry granules on the basis of the previous process by using the two granule drying machines; and (6) high-temperature firing: feeding into a kiln, and performing high-temperature firing to obtain the blue-series bright-surface ceramic rock plate. The thickness of a dry particle layer of the prepared blue-series bright-surface ceramic rock plate is 2 mm or above, various mixed dry particles are in different states after being fused, high-latitude three-dimensional pattern effect expression is achieved on a large-size plate, the pattern expression freedom degree is higher, and the color life is prolonged by three times.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ceramic rock plate processing, and particularly relates to a blue bright surface ceramic rock plate and a preparation method thereof. BACKGROUND

[0002] With the increasing demand of consumers for personalized and artistic decoration, the demand for three-dimensional ceramic rock plates in the fields of background walls, countertops and furniture veneers has significantly increased. High-end markets (such as hotels and exhibition halls) tend to choose rock plate products with strong three-dimensionality and unique texture.

[0003] In order to enhance the three-dimensional effect of ceramic tiles, various methods such as digital inkjet, mold pressing, laser engraving and nano imprinting can be used. Mainstream enterprises tend to combine digital inkjet with mold pressing, taking into account efficiency and three-dimensional effect. Laser engraving and nano imprinting are currently mainly used for high-end customization due to high equipment investment. The mainstream size of the ceramic tiles currently produced by enterprises is medium and small size: 600*1200mm, 800*1600mm and 900*1800mm (thickness 6-12mm), which are suitable for conventional scenes such as wall and countertop. Large plate specifications: 1200*2400mm and 1600*3200mm (thickness 9-20mm), which are mainly used for high-end background walls and furniture veneers.

[0004] However, the current development of three-dimensional ceramic tiles still has the following problems:

[0005] 1. Technical limit of large plate size: Due to factors such as uniformity of raw materials, deformation control during pressing and firing in roller kiln and continuous press, domestic enterprises can stably produce medium and small size three-dimensional ceramic tile plates. Large plate specifications of 1200*2400mm and 1600*3200mm three-dimensional ceramic tile plates (thickness 9-20mm) are still in the experimental stage and cannot meet the requirements of mass production.

[0006] 2. Deformation and surface texture consistency of large plates: The larger the plate area, the more difficult it is to control the drying shrinkage thermal stress of three-dimensional pattern raw materials such as glaze and ink during application. Plate warping occurs, resulting in many three-dimensional pattern ghosting defects and texture breakage.

[0007] 3. Cost and yield of large plates: The yield of three-dimensional ceramic tile plates is usually less than 70% (conventional size can reach more than 90%), and the cost of raw materials and energy consumption increases by 30%-50%. SUMMARY

[0008] In order to overcome the shortcomings of the prior art, one of the purposes of the present application is to provide a preparation method of a blue bright surface ceramic rock plate.

[0009] The second purpose of the present application is to provide a preparation method of a blue bright surface ceramic rock plate.

[0010] One of the purposes of the present application is achieved by adopting the following technical scheme: a preparation method of a blue bright surface ceramic rock plate, comprising the following steps:

[0011] (1) Selecting a brick blank: selecting a digital position through body blue blank as a large plate blank body with a size specification of 1200*2400mm or 1600*3200mm and a thickness of 9-20mm;

[0012] (2) Applying a bottom glaze: spraying a bottom glaze to the surface of the large plate blank body to form a bottom glaze layer;

[0013] (3) Inkjet printing: adjusting light blue ink, and using an inkjet printer to print a pattern on the large plate blank body according to a preset pattern to form a preset light blue line pattern;

[0014] (4) Flat screen printing machine dry particle distribution: according to the effect of the development version, using a flat screen printing machine to distribute mixed dry particles composed of blue transparent dry particles and color crystal dry particles, and multiple mixed dry particle distribution produces a pattern with a three-dimensional effect and a specific color;

[0015] (5) Dry particle machine dry particle distribution: distributing blue coarse dry particles and blue flaky dry particles on the basis of step (4) through several dry particle machines;

[0016] (6) High-temperature sintering: after the dry particle glaze is applied, the large plate blank body is sent into a kiln for high-temperature sintering to obtain a blue bright surface ceramic rock plate.

[0017] Further, in the blank body forming of step (1): the large plate blank body comprises the following components by weight: 10-15 parts of kaolin, 2-8 parts of bentonite, 20-25 parts of selected sand, 10-25 parts of super white stone, 5-20 parts of high white potassium sand, 1-4 parts of calcined talc, 0.5-1.2 parts of deagglomerating agent, and 0.2-1 parts of blank body reinforcing agent.

[0018] Further, in the bottom glaze application of step (2), the specific gravity of the bottom glaze is 1.45-1.46, and the glaze weight is 90-92 grams per 300*600 plate;

[0019] The bottom glaze is prepared from the following components 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 alumina, 2-5 parts of calcined zinc oxide, and 5-8 parts of wollastonite.

[0020] Further, in the step (4) of printing the dry particles on the fabric by the flat screen printing machine, three flat screen printing machines are used, three screen plates with different patterns are prepared, and the mixed dry particles composed of the blue transparent dry particles and the color crystal dry particles are applied on the fabric in sequence; the size of the screen plate frame of each screen plate is greater than 3200*1600mm, the photosensitive glue is coated on the screen on the screen plate frame, the patterned hollow area is formed through exposure and development, and the mesh number of the screen is 8-80;

[0021] In the process of printing the fabric, the tension of the screen of each screen plate on the flat screen printing machine is controlled to be greater than or equal to 25N / cm 2 ; each screen plate is fixed by vacuum negative pressure to prevent sliding during printing, and the mixed dry particles on each screen plate are pushed by the rubber squeegee to pass through the mesh and cover the patterned area uniformly, wherein the uniform squeegee printing speed of the rubber squeegee is controlled to be less than or equal to 0.5m / s.

[0022] Further, in the step (4) of printing the dry particles on the fabric by the flat screen printing machine, the particle size of all the dry particles is 40-80 mesh, and the amount of the mixed dry particles used on the three screen plates is 5-10g / m 2 , 12-18g / m 2 , and 520-580g / m 2 , respectively.

[0023] The blue transparent dry particles comprise the following components in parts by weight: 18-22 parts of sodium feldspar, 8-12 parts of potassium feldspar, 8-12 parts of dolomite, 8-12 parts of barium carbonate, 3-8 parts of calcined zinc oxide, 1-3 parts of calcined aluminum oxide, 8-12 parts of calcined kaolin, 8-12 parts of quartz, 3-8 parts of strontium carbonate, and 8-12 parts of blue pigment.

[0024] The color crystal dry particles comprise the following components in parts by weight: 12-18 parts of sodium feldspar, 14-18 parts of potassium feldspar, 8-12 parts of dolomite, 14-18 parts of wollastonite, 3-8 parts of barium carbonate, 3-8 parts of calcined aluminum oxide, 12-18 parts of calcined kaolin, 18-22 parts of quartz, and 3-8 parts of borax.

[0025] In the mixed dry particles used on each screen plate, the mass ratio of the blue transparent dry particles to the color crystal dry particles is (70-80):(30-20).

[0026] Further, in step (3), the inkjet printed large plate blank body is inkjet printed with alignment marks one at the four corners; in step (4), the screen printing machine is used to add alignment marks two matching the inkjet printing marks to the non-printing area of the screen plate, the position of the screen plate is adjusted by using the X / Y / Z axis fine adjustment device, the coincidence of the alignment marks two of the screen plate and the alignment marks one of the ceramic tile is observed by light transmission, after the first screen printing, the position of the screen plate is gradually fine adjusted by measuring the deviation of the edge reference line of the pattern, so that the pattern of each subsequent screen printing is consistent with the pattern of the previous screen printing.

[0027] Further, in the dry particle machine in step (5), the amount of the blue coarse dry particles is 1.5-3.5 kg / m 2 , and the amount of the blue sheet dry particles is 50-58 g / m 2 .

[0028] Further, in the dry particle machine in step (5), after the sheet dry particles are applied, the glue protective glaze is sprayed on the surface of the large plate blank body in step (5); the amount of the glue protective glaze is 380-400 g / m 2 , and the glue protective glaze comprises the following components in parts by weight: nepheline powder 15-20 parts, calcined alumina 2-5 parts, dolomite 2-5 parts, wollastonite 23-28 parts, barium carbonate 2-4 parts, calcined kaolin 5-10 parts, and quartz 23-28 parts.

[0029] Further, the preparation method of the blue bright surface ceramic rock plate further comprises three-stage drying, namely first-stage drying, second-stage drying and third-stage drying, the first-stage drying is arranged between steps (2) and (3), the second-stage drying is arranged between steps (3) and (4), and the third-stage drying is arranged between steps (5) and (6), the first-stage drying temperature is 90-110 DEG C, the second-stage drying temperature and the third-stage drying temperature are both 140-160 DEG C, and the drying time of each stage is 1-3 min.

[0030] The second purpose of the present application is achieved by the following technical scheme: a blue bright surface ceramic rock plate is prepared by the preparation method of the blue bright surface ceramic rock plate.

[0031] Compared with the prior art, the present application has the following advantages:

[0032] 1. The blue bright surface ceramic rock plate prepared by the application has a dry particle layer thickness of more than 2 mm, and the state of the mixed dry particles after melting is different, so that the high latitude three-dimensional pattern effect expression on the large size plate is realized, and the pattern expression degree is higher; the mineral crystal is used to present the color, which overturns the traditional plane ink coloration, realizes the color from inside to outside, is more full, more delicate and more pure, accurately restores the original color of the natural stone, and the color life is improved by 3 times.

[0033] Specifically, the application realizes the formation of the high three-dimensional texture mainly through two aspects of improvement, one aspect is that the existing glaze is replaced by the application of multiple layers of dry particles, and the other aspect is that the dry particle application method is changed, the multi-plate screen printing method and the dry particle machine dry particle application method are used, so that the blue coarse dry particles are molded in multiple ways, and the three-dimensional pattern with stronger three-dimensional sense is generated by the pattern superposition.

[0034] In the formation of the texture expression, the screen plate on the flat screen printing machine is designed according to different pattern expression needs, and the single-color pattern single screen plate or the multi-color pattern multiple screen plates are used for overprinting, so that the pattern high degree of freedom expression is realized, and the color dry particles, the blue transparent high-temperature dry particles and the dry particles with different shapes and sizes are used in cooperation, so that the color, shape and texture are fused with each other, the original color of the natural stone is restored, and the expression is more full, more delicate and more pure.

[0035] 2. The three-dimensional ceramic tile plate (thickness 9-20 mm) with a large plate size of 1200*2400 mm and 1600*3200 mm is realized in mass production, and the technical limit of the large plate size in the industry is broken through.

[0036] 3. By controlling the technical conditions in multiple aspects, including the control of the screen tension, the coincidence control of the screen plate mark and the tile mark, the fixation of the screen plate by the vacuum negative pressure, the control of the uniform scraping of the scraper and the like, the problem of the deformation of the large plate and the inconsistency of the surface texture caused by the application of the multiple layers of dry particles and glaze is well solved.

[0037] 4. The good product rate of the large plate is improved, and the processing cost is reduced: the good product rate of the three-dimensional ceramic tile plate reaches 85%, and the raw material and energy consumption cost is reduced by 20%-30%. DETAILED DESCRIPTION

[0038] Figure 1 It is a blue bright surface ceramic rock plate photo of the preferred embodiment 1 of the application;

[0039] Figure 2 It is a blue bright surface ceramic rock plate photo of another angle of the preferred embodiment 1 of the application;

[0040] Figure 3A partial enlarged view of the blue bright surface ceramic rock plate of the preferred embodiment 1 of the present application Figure 1 ;

[0041] Figure 4 A partial enlarged view of the blue bright surface ceramic rock plate of the preferred embodiment 1 of the present application Figure 2 ;

[0042] Figure 5 A product picture of the ceramic rock plate of the present application with the defect of the brick-shaped arch. DETAILED DESCRIPTION

[0043] The present application will be further described below in conjunction with the drawings and the specific embodiments, and it should be noted that the following described embodiments or technical features can be combined in any manner to form new embodiments without conflict.

[0044] In the present application, all the parts and percentages are weight units unless otherwise specified, and the devices and raw materials used can be purchased from the market or are commonly used in the art. The methods in the following examples are conventional methods in the art unless otherwise specified.

[0045] The present application provides a preparation method of a blue bright surface ceramic rock plate, comprising the following steps:

[0046] (1) Selecting a brick blank: pressing ceramic rock plate powder into a ceramic rock plate blank, and transporting the formed blank to a drying kiln for drying. After passing through the drying kiln, the blank is sprayed with water to maintain surface humidity. Select a digital alignment full-body blue blank with a length-width size specification of 1200*2400mm or 1600*3200mm and a thickness of 9-20mm as a large plate blank.

[0047] The digital alignment full-body blue blank refers to using blue powder as the base material, applying the powder pattern corresponding to the surface texture through a digital alignment powder applicator, and the powder color of each part of the texture corresponds to the color of the upper surface texture, so that the bottom and surface texture and color are consistent and more natural.

[0048] As a further preferred scheme, in the blank forming of step (1): the large plate 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 super white stone, 5-20 parts of high white potassium sand, 1-4 parts of calcined talc, 0.5-1.2 parts of deagglomerating agent, and 0.2-1 parts of blank body reinforcing agent.

[0049] (2) Applying a base glaze: spraying a base glaze onto the surface of the large plate blank to form a base glaze layer. The base glaze serves to add a white base glaze to increase the whiteness of the blank, which is beneficial to the color development of the subsequent multi-layer dry particles.

[0050] As a further preferred solution, in the step (2) of applying the base glaze, the base glaze has a specific gravity of 1.45-1.46 and a glaze amount of 90-92 g / 300x600 plate;

[0051] The base glaze is prepared from the following components in parts by weight: potassium feldspar 25-30 parts, sodium feldspar 15-20 parts, calcined kaolin 10-15 parts, quartz 10-15 parts, dolomite 5-8 parts, calcined alumina 6-10 parts, calcined zinc oxide 2-5 parts, wollastonite 5-8 parts.

[0052] (3) Inkjet: ink of light blue color is prepared, and an inkjet machine is used to print a pattern on a large plate blank according to a preset pattern, so as to form a preset light blue line pattern;

[0053] (4) Flat screen printing machine: according to the effect of the developed version, three flat screen printing machines are used, three screen frames with different patterns are prepared, and mixed dry particles formed by mixing blue transparent dry particles and color crystal dry particles are applied in sequence; the screen frame size of each screen frame is greater than 3200x1600mm, the screen on the screen frame is coated with photosensitive glue, and the pattern is formed by exposure and development. The screen mesh size of the screen is 8-80 mesh.

[0054] In the process of printing the fabric, the screen tension of each screen frame on the flat screen printing machine is controlled to be greater than or equal to 25N / cm 2 ; each screen frame is fixed by vacuum negative pressure to prevent sliding during printing, and the mixed dry particles on each screen frame are pushed by a rubber squeegee to pass through the screen holes uniformly, covering the pattern area, wherein the uniform squeegee printing speed of the rubber squeegee is controlled to be less than or equal to 0.5m / s.

[0055] As a further preferred solution, in the step (4) of applying dry particles by the flat screen printing machine, the particle size of all the dry particles is 40-80 mesh, and the amount of the mixed dry particles used on the three screen frames is 5-10g / m 2 , 12-18g / m 2 , and 520-580g / m 2 , respectively.

[0056] The blue transparent dry particles comprise the following components in parts by weight: sodium feldspar 18-22 parts, potassium feldspar 8-12 parts, dolomite 8-12 parts, barium carbonate 8-12 parts, calcined zinc oxide 3-8 parts, calcined alumina 1-3 parts, calcined kaolin 8-12 parts, quartz 8-12 parts, strontium carbonate 3-8 parts, and blue pigment 8-12 parts.

[0057] The color crystal dry granules comprise the following components in parts by weight: 12-18 parts of albite, 14-18 parts of potassium feldspar, 8-12 parts of dolomite, 14-18 parts of wollastonite, 3-8 parts of barium carbonate, 3-8 parts of calcined alumina, 12-18 parts of calcined kaolin, 18-22 parts of quartz, and 3-8 parts of borax.

[0058] The mass ratio of the mixed dry granules used on each screen plate is (70-80):(30-20).

[0059] As a further preferred solution, a position mark one is printed on the four corners of the large plate blank by the inkjet printer in step (3), and a position mark two matching the mark printed by the inkjet printer is added to the non-printing area of the screen plate of the flat plate screen printing machine in step (5). The position of the screen plate is adjusted using an X / Y / Z axis fine adjustment device, and the coincidence of the position mark two of the screen plate and the position mark one of the ceramic tile is observed through light transmission. After the first screen printing, the position of the screen plate is fine adjusted gradually by measuring the deviation of the reference line of the pattern edge, so that the pattern of each subsequent screen printing is consistent with the pattern of the previous screen printing.

[0060] In the graphic expression of the present application, the pattern of the screen printed dry granules in step (5) should correspond to the design pattern of the inkjet printing in step (3). Different dry granule effects should be presented on different texture lines, and the positioning problem should be solved, otherwise the consistency of the ceramic tile surface texture, ghosting defects, and texture breakage cannot be expressed. Therefore, many technical conditions need to be controlled, including the control of the screen tension, the control of the coincidence of the screen plate mark and the ceramic tile mark, the fixation of the screen plate by vacuum negative pressure, the control of the uniform speed of the squeegee, and the like.

[0061] (5) Dry granule machine: the blue coarse dry granules and flaky dry granules are applied on the large plate blank by the dry granule machine; in step (5) of the dry granule machine, the amount of the blue coarse dry granules is 1.5-3.5 kg / m 2 , and the amount of the blue flaky dry granules is 50-58 g / m 2 .

[0062] The blue coarse dry granules comprise 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, 3-5 parts of borax, and 5-10 parts of blue pigment, and the particle size of the blue coarse dry granules is 8-30 mesh.

[0063] The blue flaky dry granule comprises the following components in parts by weight: 10-15 parts of sodium feldspar, 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, 3-5 parts of borax, and 5-10 parts of blue pigment; the size of the blue flaky dry granule is 5-10 mm.

[0064] In the dry granule distribution process of the dry granule distributor, when the blue coarse dry granule or / and the flaky dry granule is distributed, a multi-layer dry granule distributor is used for sporadic distribution, at least two layers of distribution belts are arranged on the multi-layer dry granule distributor, and the distribution interval of the blue coarse dry granule or / and the flaky dry granule is adjusted by adjusting the conveying speed of each layer of the distribution belts and the size of the screen at the discharging position.

[0065] In the dry granule distribution process of the dry granule distributor, when the blue coarse dry granule or / and the flaky dry granule is distributed, a multi-layer dry granule distributor is used for sporadic distribution, at least two layers of distribution belts are arranged on the multi-layer dry granule distributor, and the distribution interval of the blue coarse dry granule or / and the flaky dry granule is adjusted by adjusting the conveying speed of each layer of the distribution belts and the size of the screen at the discharging position.

[0066] As a further preferred scheme, in the dry granule distribution process of the dry granule distributor in step (5), after the blue transparent high-temperature dry granule is distributed, the glue protective glaze is sprayed onto the surface of the large slab body; the glue protective glaze adjusts the specific gravity of the glaze by using glue, so that each layer of dry granule can be strongly attached to the glaze surface and is not sucked away and transferred, thereby improving the three-dimensional graphic expression effect.

[0067] The amount of the glue protective glaze is 380-400 g / m 2 The glue protective glaze comprises 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 blue bright 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 slabs are 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 the dry particles and adjusting the drying temperature. Specifically, adjusting the drying temperature can discharge the moisture in the dry particles. After the bricks are glazed, the moisture in the dry particles is absorbed by the bricks. The bricks that absorb moisture will be deformed due to thermal expansion and contraction. The deformed bricks are prone to cracking during belt transportation. The present application adjusts the moisture content of the bricks at different stages to control the moisture content entering the kiln to below 1.5%, thereby avoiding the explosion of the bricks due to excessive moisture entering the kiln and reducing the product yield.

[0070] (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 blue bright ceramic rock slab.

[0071] 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, and a multi-plate flat screen printing method and a dry granulation machine are used to apply the dry granules. The blue coarse dry granules are superimposed with various shapes and patterns 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 with a flat screen printing machine in step (4) and applying the dry granules with a dry granulation machine in step (5).

[0072] The present invention also provides a blue bright-surface ceramic rock plate, which is made by the preparation method of the blue bright-surface ceramic rock plate as described above.

[0073] 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.

[0074] Example 1

[0075] like Figures 1-4 As shown, a blue bright surface ceramic rock plate is made by the following preparation method of the blue bright surface ceramic rock plate, comprising the following steps:

[0076] (1) Selecting brick blank: the ceramic rock plate powder is pressed into a ceramic rock plate blank, and the formed blank is transported to a drying kiln for drying. After the blank passes through the drying kiln, water is sprayed to maintain the surface humidity; a digital alignment through body blue blank with a size specification of 1600*3200mm and a thickness of 12mm is selected as a large plate blank; the large plate blank comprises the following components in parts by weight: 13 parts of kaolin, 5 parts of bentonite, 23 parts of selected sand, 17 parts of super white stone, 16 parts of high white potassium sand, 2 parts of calcined talc, 0.7 parts of deagglomerating agent, and 0.9 parts of blank enhancer.

[0077] (2) Applying bottom glaze: spraying the bottom glaze onto the surface of the large plate blank to form a bottom glaze layer; the specific gravity of the bottom glaze is 1.45, and the glaze weight is 91g / 300*600 tray; the bottom glaze is prepared from the following components in parts by weight: 27 parts of potassium feldspar, 19 parts of sodium feldspar, 12 parts of calcined kaolin, 13 parts of quartz, 8 parts of dolomite, 7 parts of calcined alumina, 4 parts of calcined zinc oxide, and 6.5 parts of wollastonite.

[0078] (3) Inkjet: adjusting the ink to a light blue color, using an inkjet machine to print patterns on the large plate blank according to the preset patterns, forming a preset light blue line pattern;

[0079] (4) Flat plate screen printing machine dry particle distribution: using three flat plate screen printing machines, preparing three screens with different pattern designs, and sequentially applying blue transparent dry particles and mixed dry particles (dry particles are the same, screen patterns are different, and dry particle usage is different) formed by mixing color crystal dry particles; the screen frame size of each screen is greater than 3200*1600mm, the photosensitive glue is coated on the screen of the screen frame, the pattern is formed by exposure and development, and the screen mesh size is 30-80 meshes;

[0080] During the printing process, the screen tension of each screen on the flat plate screen printing machine is controlled to be 25.5N / cm 2 ; each screen is fixed by vacuum negative pressure to prevent sliding during printing, and the mixed dry particles on each screen are pushed through the screen holes by a rubber squeegee to cover the pattern area, wherein the uniform squeegee printing speed of the rubber squeegee is controlled to be 0.48m / s.

[0081] In step (4) of the flat plate screen printing machine dry particle distribution, the size of all dry particles is 40-80 meshes, and the usage of the three screen printing dry particles is 8g / m 2 , 15g / m 2 , and 550g / m 2 , respectively.

[0082] The blue transparent dry granule comprises 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 10 parts of blue pigment;

[0083] The color crystal dry granule comprises the following components in parts by weight: 15 parts of albite, 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, and 5 parts of borax.

[0084] The mass ratio of the blue transparent dry granule and the color crystal dry granule in the mixed dry granule used on each screen plate is 75:25.

[0085] In order to ensure that the pattern is not deformed and not ghosted during screen printing, the four corner positions of the large plate body in step (3) are marked with inkjet printing alignment marks one, and the non-printing area of the screen plate of the flat plate screen printing machine in step (5) is added with alignment marks two matching the inkjet machine marking, the position of the screen plate is adjusted using the X / Y / Z axis fine adjustment device, the coincidence degree of the screen plate alignment mark two and the ceramic tile alignment mark one is observed through light transmission, after the first screen printing, the deviation of the pattern edge reference line is measured, and the position of the screen plate is gradually fine adjusted, so that the pattern of each subsequent screen printing is consistent with the pattern of the previous screen printing.

[0086] (5) Dry granule machine: two dry granule machines are used to apply blue coarse dry granule / blue flaky dry granule on the large plate body; in this scheme, when applying blue coarse dry granule and blue flaky dry granule, two multi-layer dry granule machines are used for sporadic application, four layers of material belts are arranged on each of the multi-layer dry granule machines, the blue coarse dry granule / flaky dry granule is applied on the material belts, and the conveying speed of each layer of material belts and the size of the screen mesh at the discharging position (3-30 mesh, 5-10 mm) are adjusted to meet the needs of adjusting the distribution gap of coarse and flaky dry granules.

[0087] The amount of the blue coarse dry granule is 2.5 kg / m 2 , and the amount of the blue flaky dry granule is 54 g / m 2 .

[0088] The blue coarse dry granule / blue flaky dry granule comprises the following components in parts by weight: 12 parts of albite, 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, 4 parts of borax, and 8 parts of blue pigment, the particle size of the blue coarse dry granule is 8-30 mesh, and the size of the blue flaky dry granule is 5-10 mm.

[0089] In the step (5) of the dry granulator, after the sheet-shaped dry granules are distributed, the glue protective glaze is sprayed on the surface of the large slab body; the amount of the glue protective glaze is 395 g / m 2 The glue protective glaze comprises the following components in parts by weight: nepheline powder 18 parts, calcined alumina 4 parts, dolomite 3 parts, wollastonite 26 parts, barium carbonate 3 parts, calcined kaolin 8 parts, and quartz 25 parts.

[0090] The preparation method of the blue bright surface ceramic rock plate further comprises three-stage drying, namely first-stage drying, second-stage drying and third-stage drying, the first-stage drying is arranged between steps (2) and (3), the second-stage drying is arranged between steps (3) and (4), and the third-stage drying is arranged between steps (5) and (6), the first-stage drying temperature is 95℃, the second-stage and third-stage drying temperatures are both 150℃, and each stage of drying lasts for 1-3 minutes.

[0091] (6) High-temperature sintering: the large slab body after the glazing is finished is sent into a kiln for high-temperature sintering, and the blue bright surface ceramic rock plate is obtained.

[0092] Example 2

[0093] A blue bright surface ceramic rock plate is prepared by the following preparation method of the blue bright surface ceramic rock plate, comprising the following steps:

[0094] (1) Selecting a brick blank: ceramic rock plate powder is pressed into a ceramic rock plate blank, and the formed blank is sent to a drying kiln for drying, and then water is sprayed to maintain the surface humidity; a digital alignment full-body blue blank with a size specification of 1200*2400mm and a thickness of 12mm is selected as a large slab blank.

[0095] As a further preferred scheme, in the step (1) of blank forming, the large slab blank comprises the following components in parts by weight: kaolin 10 parts, bentonite 2 parts, selected sand 20 parts, super white stone 10 parts, high white potassium sand 5 parts, calcined talc 1 part, deagglomerating agent 0.5 parts, and blank enhancer 0.2 parts.

[0096] (2) Applying a base glaze: a base glaze is sprayed on the surface of the large slab blank to form a base glaze layer; the base glaze has a specific gravity of 1.45 and a glaze amount of 90g / 300*600 tray; the base glaze is prepared from the following components in parts by weight: potassium feldspar 25 parts, sodium feldspar 15 parts, calcined kaolin 10 parts, quartz 10 parts, dolomite 5 parts, calcined alumina 6 parts, calcined zinc oxide 2 parts, and wollastonite 5 parts.

[0097] (5) Inkjet printing: light blue ink is prepared, and an inkjet machine is used to print a pattern on the large slab blank according to a preset pattern to form a preset light blue line pattern.

[0098] (4) The flat screen printing machine cloth dry particle: using three flat screen printing machines, preparing three screen plates with different color patterns, using three flat screen printing machines, preparing three screen plates with different color patterns, and sequentially applying mixed dry particles composed of blue transparent dry particles and color crystal dry particles mixed with each other; the size of the screen plate frame of each screen plate is greater than 3200*1600mm, the screen plate frame is coated with photosensitive glue, the patterned hollow area is formed by exposure and development, and the mesh number of the screen plate is 30-80 mesh;

[0099] In the process of printing the cloth, the tension of the screen plate of each screen plate of the flat screen printing machine is controlled to be 27N / cm 2 ; each screen plate is fixed by vacuum negative pressure to prevent sliding during printing, and the mixed dry particles on each screen plate are pushed by a rubber squeegee to pass through the mesh uniformly and cover the pattern area, wherein the uniform squeegee printing speed is controlled to be 0.5m / s.

[0100] Among them, the particle size of all dry particles is 40-80 mesh, and the amount of mixed dry particles used on the three screen plates is 5g / m 2 , 12g / m 2 , 520g / m 2 , respectively.

[0101] The blue transparent dry particle comprises the following components in parts by weight: 18 parts of sodium feldspar, 8 parts of potassium feldspar, 8 parts of dolomite, 8 parts of barium carbonate, 3 parts of calcined zinc oxide, 1 part of calcined alumina, 8 parts of calcined kaolin, 8 parts of quartz, 3 parts of strontium carbonate, and 8 parts of blue pigment.

[0102] In the mixed dry particles used on each screen plate, the mass ratio of the blue transparent dry particles and the color crystal dry particles is 70:30.

[0103] In step (3), the large plate blank body is jet printed with alignment marks one at the four corner positions, and in step (5), the non-printing area of the screen plate of the flat screen printing machine is added with alignment marks two matched with the jet printer, the position of the screen plate is adjusted by using X / Y / Z axis fine adjustment device, the coincidence degree of the screen plate alignment marks two and the ceramic tile alignment marks one is observed through light transmission, after the first screen printing, the deviation of the pattern edge reference line is measured, and the position of the screen plate is gradually fine adjusted, so that the pattern of each subsequent screen printing is consistent with the pattern of the previous screen printing.

[0104] (5) Dry granulator dry granulation: two dry granulators are used to dry and granulate blue coarse dry granules and blue sheet dry granules on the large slab body; in this scheme, when the blue coarse dry granules and blue sheet dry granules are applied, two multi-layer dry granulators are used for sporadic application, four layers of material belts are arranged on each multi-layer dry granulator, the blue coarse dry granules / sheet dry granules are applied on the material belts, and the distribution gap of the coarse and sheet dry granules is adjusted by adjusting the conveying speed of each layer of material belts and the size of the screen at the discharge (3-30 mesh, 5-10 mm).

[0105] The amount of the blue coarse dry granules is 1.5 kg / m 2 , and the amount of the blue sheet dry granules is 50 g / m 2 .

[0106] The blue coarse dry granules and the blue sheet dry granules each comprise 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, 3 parts of borax, and 5 parts of blue pigment, and the particle size of the blue coarse dry granules is 8-30 mesh, and the size of the blue sheet dry granules is 5-10 mm.

[0107] After the sheet dry granules are applied, a glue protective glaze is sprayed on the surface of the large slab body; the amount of the glue protective glaze is 380 g / m 2 , and the glue protective glaze comprises 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, and 5 parts of calcined kaolin, and 23 parts of quartz.

[0108] The preparation method of the blue series bright surface ceramic rock plate further comprises three drying stages, i.e., a first drying stage, a second drying stage, and a third drying stage, the first drying stage is arranged between steps (2) and (3), the second drying stage is arranged between steps (3) and (4), and the third drying stage is arranged between steps (5) and (6), the temperature of the first drying stage is 90°C, the temperature of the second and third drying stages is 140°C, and the drying time of each stage is 1-3 min.

[0109] (6) High-temperature sintering: the large slab body after the glazing is completed is sent into a kiln for high-temperature sintering, and a blue series bright surface ceramic rock plate is obtained.

[0110] Example 3

[0111] A blue series bright surface ceramic rock plate is prepared by the following preparation method of a blue series bright surface ceramic rock plate, comprising the following steps:

[0112] (1) Selecting bricks: Press the ceramic rock slab powder into a ceramic rock slab body, transport the formed body to a drying kiln for drying, spray water after the body passes through the drying kiln to maintain surface moisture; select a blue blank with a length and width of 1600×3200 mm, a thickness of 12 mm, and digital alignment as a large slab body; the large slab body includes 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 calcined talc, 1.2 parts of degumming agent, and 1 part of body reinforcing agent.

[0113] (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 1.46 and a glaze weight of 92 grams per 300×600 plate;

[0114] The base 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 aluminum oxide, 5 parts of calcined zinc oxide, and 8 parts of wollastonite.

[0115] (3) Inkjet: Prepare light blue ink and use an inkjet machine to print a pattern on the large slab according to a preset pattern to form a preset light blue line pattern;

[0116] (4) Flatbed screen printing machine for dry granules: Three flatbed screen printing machines are used, and three screens with different patterns are prepared. Mixed dry granules made by mixing blue transparent dry granules and colored crystal dry granules are applied in sequence. The screen frame size of each screen is greater than 3200×1600mm. Photosensitive adhesive is applied to the screen on the screen frame. The pattern hollow area is formed by exposure and development. The mesh number of the screen is 30-80 mesh.

[0117] During the printing process, 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 sliding during printing, and use a rubber scraper to push the mixed dry particles on each screen so that they pass through the mesh evenly and cover the pattern area. The rubber scraper is controlled to have a uniform scraping speed of 0.4m / s.

[0118] Among them, the particle size of all dry particles is 40-80 mesh, and the amount of mixed dry particles used on the three screens is 10g / m 2 , 18g / m 2 , 580g / m 2 ;

[0119] The blue transparent dry granule comprises the following components in parts by weight: 22 parts of sodium feldspar, 12 parts of potassium feldspar, 12 parts of dolomite, 12 parts of barium carbonate, 8 parts of calcined zinc oxide, 3 parts of calcined alumina, 12 parts of calcined kaolin, 12 parts of quartz, 8 parts of strontium carbonate, and 12 parts of blue pigment;

[0120] The color crystal dry granule comprises the following components in parts by weight: 18 parts of sodium feldspar, 18 parts of potassium feldspar, 12 parts of dolomite, 18 parts of wollastonite, 8 parts of barium carbonate, 8 parts of calcined alumina, 18 parts of calcined kaolin, 22 parts of quartz, and 8 parts of borax.

[0121] The mass ratio of the blue transparent dry granule and the color crystal dry granule in the mixed dry granule used on each screen is 80:20.

[0122] In step (3), the large plate blank body is jet-printed with the position mark one. In step (5), the non-printing area of the screen printing plate of the screen printing machine is added with the position mark two matched with the jet printer. The position of the screen printing plate is adjusted by using the X / Y / Z axis fine adjustment device. The coincidence degree of the screen printing plate position mark two and the ceramic tile position mark one is observed through light transmission. After the first screen printing, the deviation of the pattern edge reference line is measured, and the position of the screen printing plate is gradually fine adjusted so that the pattern of each subsequent screen printing is consistent with the pattern of the previous screen printing.

[0123] (5) Dry granule machine: two dry granule machines are used to apply the blue coarse dry granule and the blue flaky dry granule on the large plate blank body. In this scheme, when the blue coarse dry granule and the blue flaky dry granule are applied, two multi-layer dry granule machines are used for sporadic application. Each of the multi-layer dry granule machines is provided with four layers of distribution belts. The blue coarse dry granule / flaky dry granule is applied on the distribution belts. The distribution speed of each layer of the distribution belts and the size of the screen mesh at the discharging position (3-30 mesh, 5-10 mm) are adjusted to meet the needs of adjusting the distribution gap of the coarse and flaky dry granules. Among them, the blue flaky dry granule forms a three-dimensional pattern effect with a flaky burst shape on the surface of the ceramic rock plate, as shown in Figure 4 .

[0124] The amount of the blue coarse dry granule is 3.5 kg / m 2 , and the amount of the blue flaky dry granule is 58 g / m 2 .

[0125] The blue coarse dry granule and the blue flaky dry granule each comprise 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, 5 parts of borax, and 10 parts of blue pigment. The size of the blue coarse dry granule is 8-30 mesh, and the size of the blue flaky dry granule is 5-10 mm.

[0126] After the dry granules are applied, the glue protective glaze is sprayed on the surface of the large slab body; the amount of the glue protective glaze is 400 g / m 2 The glue protective glaze comprises the following components in parts by weight: nepheline powder 20 parts, calcined alumina 5 parts, dolomite 5 parts, wollastonite 28 parts, barium carbonate 4 parts, calcined kaolin 10 parts, and quartz 28 parts.

[0127] The preparation method of the blue bright-faced ceramic rock plate further comprises three-stage drying, namely first-stage drying, second-stage drying, and third-stage drying, the first-stage drying is arranged between steps (2) and (3), the second-stage drying is arranged between steps (3) and (4), and the third-stage drying is arranged between steps (5) and (6), the first-stage drying temperature is 110 DEG C, the second-stage and third-stage drying temperatures are both 160 DEG C, and each stage of drying lasts for 1-3 min.

[0128] (6) High-temperature sintering: the large slab body after glazing is sent into a kiln for high-temperature sintering, and a blue bright-faced ceramic rock plate is obtained.

[0129] Comparative Example 1

[0130] Compared with the blue bright-faced ceramic rock plate manufacturing process of Example 1, the difference lies in that, in the step (5) of applying dry granules by a flat screen printing machine, the screen tension is 24 N / cm 2， , and the rest of the conditions are the same as those of Example 1.

[0131] Comparative Example 2

[0132] Compared with the blue bright-faced ceramic rock plate manufacturing process of Example 1, the difference lies in that, in the step (5) of applying dry granules by a flat screen printing machine, the step of screen registration is absent, and the rest of the conditions are the same as those of Example 1.

[0133] Comparative Example 3

[0134] Compared with the blue bright-faced ceramic rock plate manufacturing process of Example 1, the difference lies in that, in the step (5) of applying dry granules by a flat screen printing machine, the step of fixing the screen by vacuum negative pressure is absent during the screen printing of dry granules, and the rest of the conditions are the same as those of Example 1.

[0135] Comparative Example 4

[0136] Compared with the blue bright-faced ceramic rock plate manufacturing process of Example 1, the difference lies in that, in the step (5) of applying dry granules by a flat screen printing machine, the uniform printing speed of the squeegee is controlled to be 0.6 m / s, and the rest of the conditions are the same as those of Example 1.

[0137] Comparative Example 5

[0138] Compared with the blue bright-faced ceramic rock plate manufacturing process of Example 1, the difference lies in that, in step (4) of the flat screen printing machine, the conventional liquid screen printing glaze is used instead of the solid particle screen printing dry particle of the application, and the rest of the conditions are the same as Example 1. Among them, the conventional screen printing glaze formula includes the following components in parts by weight: 22 parts of sodium feldspar, 23 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.

[0139] Comparative Example 6

[0140] Compared with the blue bright-faced ceramic rock plate manufacturing process of Example 1, the difference lies in that, in step (5) of the dry particle machine, the conventional transparent dry particle is used instead of the blue transparent high-temperature dry particle of the application, and the rest of the conditions are the same as Example 1. Among them, the conventional transparent dry particle formula includes the following components in parts by weight: 15% of sodium feldspar, 12 parts of potassium feldspar, 13 parts of nepheline, 8 parts of dolomite, 8 parts of barium carbonate, 4 parts of calcined zinc oxide, 3 parts of calcined alumina, 8 parts of calcined kaolin, 12 parts of quartz, 8 parts of strontium carbonate, and 8 parts of blue pigment.

[0141] Comparative Example 7

[0142] Compared with the blue bright-faced ceramic rock plate manufacturing process of Example 1, the difference lies in that, in the three small drying sections of the glaze line, the second drying process is missing.

[0143] Comparative Example 8

[0144] Compared with the blue bright-faced ceramic rock plate manufacturing process of Example 1, the difference lies in that, in the three small drying sections of the glaze line, the third drying process is missing.

[0145] Effect evaluation and performance detection

[0146] The performance of the blue bright-faced ceramic rock plate of Example 1 and Comparative Examples 1-8 was detected, and the detection items and results are shown in Table 1.

[0147] 1. Large plate pattern texture deformation, ghosting: refers to observing the texture pattern of the fired ceramic rock plate, whether it is inconsistent with the pre-auditing pattern, and whether ghosting occurs.

[0148] 2. Plate edge cracking: refers to visually observing the fired ceramic rock plate to observe whether the plate edge appears cracking, obvious gap and other phenomena.

[0149] 3. Brick-shaped bending and arching: refers to visually observing the fired ceramic rock plate to observe whether the plate edge appears deformation, edge lifting and other phenomena.

[0150] Table 1 is the performance test data of each example ceramic rock plate

[0151] Severe panel pattern distortion, ghosting Panel edge cracking Brick arching Example 1 No panel pattern distortion, ghosting No edge cracking No brick arching Comparative Example 1 Mild panel pattern distortion, ghosting No edge cracking No brick arching Comparative Example 2 Mild panel pattern distortion, ghosting No edge cracking No brick arching Comparative Example 3 Mild panel pattern distortion, ghosting No edge cracking No brick arching Comparative Example 4 Mild panel pattern distortion, ghosting No edge cracking No brick arching Comparative Example 6 No panel pattern distortion, ghosting No edge cracking Brick arching Comparative Example 7 No panel pattern distortion, ghosting Edge cracking No brick arching Comparative Example 8 No panel pattern distortion, ghosting Edge cracking No brick arching

[0152] The dry particle layer thickness of the blue bright ceramic rock plate prepared in embodiments 1-3 is more than 2 mm, the state after the fusion of the mixed dry particles is different, the high latitude three-dimensional graphic effect expression is realized on the large size specification plate, the pattern expression degree of freedom is high, the color life is improved by 3 times, the mineral crystals are used to present the color, the traditional plane ink color is overturned, the color is realized from inside to outside, is more full, more delicate, more pure, and the original color of natural stone is accurately restored.

[0153] Compared with example 1, the difference of comparative example 1-4 is that in step (5) of dry particle distribution of flat screen printing machine, the screen tension is less than 25 N / cm 2 , the screen version alignment step (42) is missing, the step of fixing the screen version by vacuum negative pressure is missing, and the uniform scraping speed of the scraper is controlled to be 0.6 m / s. The pattern of the ceramic rock plate prepared has slight texture deformation and ghosting.

[0154] Compared with example 1, the difference of comparative example 5 is that in step (4) of dry particle distribution of flat screen printing machine, the conventional liquid screen printing glaze is used instead of the solid particle screen printing dry particle of the application, which causes glaze dripping, so that the product cannot produce pattern expression, and the dry particle expansion coefficient is small, resulting in arching of the brick shape after firing.

[0155] Compared with example 1, the difference of comparative example 6 is that in step (5) of dry particle distribution of dry particle machine, the conventional transparent dry particle formula is used instead of the dry particle formula of the application, and the ceramic rock plate prepared has arching on the brick shape, as shown in Figure 5 The qualified brick shape requires that the ceramic rock plate is vertically erected on the flat ground with the long side, and the thickness gauge is inserted between the brick arm and the standard part, and the thickness of the gauge is required to be not more than 0.6 mm.

[0156] Compared with example 1, the difference of comparative examples 7-8 is that in the three small drying sections of the glaze line, the second drying or the third drying process is missing, and the ceramic rock plate obtained after firing has edge cracking.

[0157] The above-mentioned embodiments are only preferred embodiments of the application, and cannot be used to limit the scope of protection of the application, and any non-essential changes and substitutions made by those skilled in the art on the basis of the application all belong to the scope of protection claimed by the application.

Claims

1. A method for preparing a blue bright surface 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 blue 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 light blue ink and use an inkjet machine to print a pattern on the large slab according to a preset pattern to form a preset light blue line pattern; (4) Flat screen printing machine for dry particles: According to the effect of the development layout, a flat screen printing machine is used to apply a mixture of blue transparent dry particles and colored crystal dry particles. Multiple application of mixed dry particles produces a pattern with a three-dimensional sense and a specific color; (5) Dry granulation machine: using several dry granulation machines to distribute blue coarse dry granules and blue flake dry granules based on step (4); (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 blue bright ceramic rock slab.

2. The method for preparing the blue bright surface ceramic rock plate according to claim 1, characterized in that: In step (1) blank forming: 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.

3. The method for preparing the blue bright surface 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 blue bright surface ceramic rock plate according to claim 1, characterized in that: In step (4) of applying dry particles on a flat screen printing machine, three flat screen printing machines are used, three screens with different patterns are prepared, and mixed dry particles formed by mixing blue transparent dry particles and colored crystal dry particles are applied in sequence; the screen frame size of each screen is greater than 3200×1600 mm, a photosensitive adhesive is applied to 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; During the fabric printing process, control the screen tension of each screen on the flat screen printing machine to ≥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 mixed dry particles on each screen 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.

5. The method for preparing the blue bright surface ceramic rock plate according to claim 4, characterized in that: In step (4) of the flat screen printing machine, the particle size of all dry particles is 40-80 mesh, and the amount of mixed dry particles used on the three screens is 5-10g / m 2 , 12-18g / m 2 , 520-580g / m 2 ; The blue transparent dry particles include the following components in parts by weight: 18-22 parts of albite, 8-12 parts of potassium feldspar, 8-12 parts of dolomite, 8-12 parts of barium carbonate, 3-8 parts of calcined zinc oxide, 1-3 parts of calcined aluminum oxide, 8-12 parts of calcined kaolin, 8-12 parts of quartz, 3-8 parts of strontium carbonate, and 8-12 parts of blue colorant; The colored crystal dry particles include the following components in parts by weight: 12-18 parts of albite, 14-18 parts of potassium feldspar, 8-12 parts of dolomite, 14-18 parts of wollastonite, 3-8 parts of barium carbonate, 3-8 parts of calcined alumina, 12-18 parts of calcined kaolin, 18-22 parts of quartz, and 3-8 parts of borax; In the mixed dry particles used on each screen, the mixing mass ratio of the blue transparent dry particles and the colorful crystal dry particles is (70-80): (30-20).

6. The method for preparing the blue bright surface 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.

7. The method for preparing the blue bright surface ceramic rock plate according to claim 1, characterized in that: In step (5) of drying granules in the granulator, the amount of the blue coarse dry granules is 1.5-3.5 kg / m 2 The dosage of the blue flaky dry particles is 50-58g / m 2 The blue coarse dry granule size is 8-30 mesh; the blue flaky dry granule size is 5-10mm.

8. The method for preparing the blue bright surface ceramic rock plate according to claim 1, characterized in that: In step (5), after the flaky dry particles are applied 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 380-400g / 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.

9. The method for preparing the blue bright surface ceramic rock plate according to claim 1, characterized in that: The preparation method of the blue bright ceramic rock plate is also 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.

10. A blue bright surface ceramic rock plate, characterized in that: The blue bright-surface ceramic rock slab is made by the preparation method of any one of claims 1 to 9.

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