80-degree ultra-white light-transmitting jade ceramic rock plate, blank and preparation method of 80-degree ultra-white light-transmitting jade ceramic rock plate

Abstract

The invention discloses a 80-degree ultra-white light-transmitting jade ceramic rock plate, a blank and a preparation method of the 80-degree ultra-white light-transmitting jade ceramic rock plate. The blank comprises a blank layer, and the blank layer is prepared from, by weight, 15-30 parts of ultra-white kaolin, 5-10 parts of high-white plastic mud, 30-60 parts of high-white potassium sodium sand, 20-40 parts of frit, 0-5 parts of calcined talc and 0.1-1 part of a blank reinforcing agent; the frit is prepared from the following components in percentage by mass: 50.0 to 65.0 percent of SiO2, 14.0 to 19.0 percent of Al2O3, 3.0 to 12.0 percent of CaO, 0.5 to 4.0 percent of K2O, 3.0 to 6.0 percent of Na2O, 2.0 to 6.0 percent of ZnO, 2.0 to 6.0 percent of SrO and 5.0 to 15 percent of BaO; the iron content of the ultra-white kaolin and the iron content of the high-plasticity mud are both smaller than or equal to 0.2%; the iron content of the high-whiteness potassium-sodium sand is less than or equal to 0.1%; the dry breaking strength of the high-whiteness plastic mud is 8 to 15 MPa. The rock plate is softer, milder and transparent in light transmission, uniform in light transmission and color development, finer in texture and suitable for being applied to a large decorative lighting background wall.

Description

Technical Field

[0001] The present invention relates to the technical field of ceramic rock slabs, and in particular to an 80-degree ultra-white, light-transmitting jade-like ceramic rock slab, a blank and a preparation method thereof. Background Art

[0002] As a new type of material, ceramic rock slabs are becoming more and more popular in the market for high-end ceramic products such as bathroom cabinets and bathroom background walls due to their high white jade texture and excellent physical properties, such as high temperature resistance, abrasion resistance, penetration resistance, acid and alkali resistance, etc. The cross-border application characteristics of rock slabs make them not only suitable for traditional wall and floor decoration, but also for cabinet countertops, lighting background walls and other fields.

[0003] The whiteness of the large-sized white ceramic rock slabs commonly seen on the market is basically within 65 degrees. Occasionally, white rock slabs with a whiteness of 70 degrees can be seen. For example, patent ZL202111203717.2 discloses a ceramic plate with a jade-like fish belly white effect. Although the whiteness of the ceramic plate is greater than 75 degrees, it also solves the problem of insufficient drying strength and poor forming performance of the existing high-white body, which leads to breakage and rotten bricks. However, its light transmittance is insufficient, the light transmittance color is scattered, and the color tone is dark, so it cannot be used in high-end large-scale lighting background walls. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, one of the purposes of the present invention is to provide a blank of an 80-degree ultra-white and translucent jade-like ceramic rock slab.

[0005] The second purpose of the present invention is to provide a method for preparing a blank of 80-degree ultra-white and translucent jade-like ceramic rock slab.

[0006] The third purpose of the present invention is to provide an 80-degree ultra-white and translucent jade-like ceramic rock plate.

[0007] The fourth object of the present invention is to provide a method for preparing 80-degree ultra-white and translucent jade-like ceramic rock slabs.

[0008] One of the purposes of the present invention is achieved by the following technical solution: a blank of an 80-degree ultra-white translucent jade ceramic rock plate, characterized in that it comprises a blank layer, wherein the blank layer is composed of the following blanks in parts by weight: 15 to 30 parts of ultra-white kaolin, 5 to 10 parts of high-white plastic mud, 30 to 60 parts of high-white potassium sodium sand, 20 to 40 parts of frit, 0 to 5 parts of burnt talc, and 0.1 to 1 part of blank reinforcing agent;

[0009] The frit includes the following components by mass percentage: 50.0-65.0% SiO2, 14.0-19.0% Al2O3, 3.0-12.0% CaO, 0.5-4.0% K2O, 3.0-6.0% Na2O, 2.0-6.0% ZnO, 2.0-6.0% SrO, 5.0-15% BaO;

[0010] The iron content of the ultra-white kaolin and high plastic mud is ≤0.2%; the iron content of the high white potassium sodium sand is ≤0.1%; and the dry flexural strength of the high white plastic mud is 8-15MPa.

[0011] Optionally, the blank further comprises a colorant, and the colorant accounts for 0.5-4% of the total mass of the ingredients.

[0012] The second object of the present invention is achieved by the following technical solution: a method for preparing the blank of the 80-degree ultra-white and translucent jade ceramic rock plate as described above, comprising the following steps:

[0013] (1) Ball milling process: put the raw materials for the 80-degree ultra-white and translucent jade ceramic rock plate into the ball mill in sequence according to the counterweight, then add water, ball mill, sieve, remove iron, and put into a clean slurry pool to obtain slurry;

[0014] (2) Aging process: The slurry obtained in the ball milling process flows into the slurry pool, is stirred evenly, and aged for more than 48 hours;

[0015] (3) Powder spraying process: The slurry aged in the aging process is supplied to the spray drying tower through the spray tower mud pump, and spray-dried in the spray drying tower to obtain the green body powder of 80-degree ultra-white and translucent jade-like ceramic rock slab.

[0016] Optionally, in step (1), before the raw materials are ball-milled, the bucket of the forklift, the feeder and the conveyor belt need to be cleaned, the balls used for ball milling are high-aluminum balls, and the slurry after ball milling, screening and iron removal is transported to a slurry pool fully paved with tiles to wait for homogenization and aging.

[0017] Optionally, in step (1), the ball milling process parameters are: the amount of water is 34-37% of the total weight of the dry material, and the specific gravity of the ball slurry is 1.65-1.72 g / cm 3 , flow rate 55 to 85 seconds, 10,000-hole sieve fineness 0.2 to 0.8.

[0018] Optionally, in step (3), natural gas is used as fuel for the spray drying tower, and after being sprayed by the spray drying tower, the powder is stored in a dedicated stainless steel powder bin through a clean conveying system.

[0019] Optionally, in step (3), in the powder spraying process, the process parameters of spray drying are: moisture content is controlled at 7-7.5%; bulk density is 0.8-0.9 g / cm 3 ; The powder particle size gradation range is: 30 mesh 3-8%, 40 mesh 20-40%, 60 mesh 35-55%, 120 mesh <3%.

[0020] Optionally, the preparation method of the 80-degree ultra-white translucent jade-like ceramic rock slab also includes (4) a colorant adding step: adding colorant to the slurry obtained after the ball milling and aging steps, mixing and stirring evenly to obtain a color line slurry; and then undergoing a powder spraying step to obtain a color line powder.

[0021] The third purpose of the present invention is achieved by the following technical solution: an 80-degree ultra-white translucent jade-like ceramic rock plate, the blank of the ceramic rock plate is the blank of the 80-degree ultra-white translucent jade-like ceramic rock plate.

[0022] The fourth object of the present invention is achieved by the following technical solution: a method for preparing an 80-degree ultra-white translucent jade-like ceramic rock plate, characterized in that it includes: a blank preparation method and a blank forming method;

[0023] The blank preparation method is the blank preparation method of the 80-degree ultra-white and translucent jade ceramic rock plate as described above;

[0024] The blank forming method comprises the following steps:

[0025] (5) Fabrication process: The blank powder and / or color stripe material are laid according to a preset pattern by a digital fabrication machine, and the blank is dried after being pressed and formed;

[0026] (6) glazing step: applying a glaze to the body dried in step (5); inkjet printing a pattern layer, wherein the pattern layer is aligned with the fabric layer in step (5);

[0027] (7) Polishing and waxing process: firing the body obtained in step (6), treating the surface of the body, and polishing and waxing the body as needed; or applying effect glaze to the body obtained in step (6), firing the body, and polishing and waxing the fired body as needed.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The present invention adjusts the blank formula for 80-degree ultra-white translucent jade ceramic rock slabs, especially the frit formula, so that the jade ceramic rock slab products maintain the physical and chemical properties of the green body such as flexural strength, modulus of rupture and firing temperature range, and improves the high whiteness (blank whiteness ≥ 85 degrees), light transmittance (light transmittance ≥ 6.5%), and texture that is more delicate and warm. The light transmittance of the large ceramic slabs and rock slabs under light is softer, warmer, and more transparent, the light transmittance color is uniform, the texture is more delicate, and it is more suitable for use in high-end large-scale lighting background walls with certain lighting effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a picture of the ceramic rock plate of Example 2 when it is illuminated from bottom to top by a light source;

[0031] Figure 2 This is a picture of the ceramic rock plate of comparative example 7 when it is illuminated from bottom to top by the same light source. DETAILED DESCRIPTION

[0032] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0033] In the present invention, unless otherwise specified, all parts and percentages are by weight, and the equipment and raw materials used can be purchased from the market or are commonly used in the art. The methods in the following embodiments are all conventional methods in the art unless otherwise specified.

[0034] A blank of an 80-degree ultra-white translucent jade-like ceramic rock plate, comprising a blank layer, wherein the blank layer is composed of the following blanks in parts by weight: 15 to 30 parts of ultra-white kaolin, 5 to 10 parts of high-white plastic mud, 30 to 60 parts of high-white potassium sodium sand, 20 to 40 parts of frit, 0 to 5 parts of calcined talc, and 0.1 to 1 part of a blank reinforcing agent;

[0035] The frit includes the following components by mass percentage: 50.0-65.0% SiO2, 14.0-19.0% Al2O3, 3.0-12.0% CaO, 0.5-4.0% K2O, 3.0-6.0% Na2O, 2.0-6.0% ZnO, 2.0-6.0% SrO, 5.0-15% BaO;

[0036] The iron content of the ultra-white kaolin and high plastic mud is ≤0.2%; the iron content of the high white potassium sodium sand is ≤0.1%; and the dry flexural strength of the high white plastic mud is 8-15MPa.

[0037] This solution provides a blank for an 80-degree ultra-white translucent jade-like ceramic rock slab. By adjusting the blank formula for the 80-degree ultra-white translucent jade-like ceramic rock slab, especially the frit formula, the jade-like ceramic rock slab products maintain the physical and chemical properties of the green body such as flexural strength, modulus of rupture and firing temperature range, and improve the high whiteness (blank whiteness ≥ 85 degrees), light transmittance (light transmittance ≥ 6.5%), and texture that is more delicate and warm, making the light transmittance of the large ceramic slabs and rock slabs softer, warmer and more transparent under the light, the light transmittance color is uniform, the texture is more delicate, and it is more suitable for use in high-end large-scale lighting background walls with certain lighting effects.

[0038] Specifically, this solution increases the content of ultra-white kaolin, combined with SiO2, SrO, BaO elements in the special melt and other combinations in the raw materials. These inorganic crystalline materials have a highly ordered structure, and their atoms or molecules are arranged very regularly. For example, silicon dioxide is composed of uniformly and closely arranged SiO4 tetrahedrons in the solid state. This regular arrangement allows visible light to propagate freely between the materials, thereby effectively improving the whiteness and transmittance of the green body.

[0039] The raw materials used for the frit include sodium feldspar, potassium feldspar, quartz powder, alumina, calcite, strontium carbonate and barium carbonate. The raw materials are mixed, melted at 1450-1550° C. and quenched with water to obtain a crystallized frit.

[0040] As a further embodiment, the blank further comprises a colorant, and the colorant accounts for 0.5 to 4% of the total mass of the ingredients.

[0041] The second object of the present invention is achieved by the following technical solution: a method for preparing the blank of the 80-degree ultra-white and translucent jade ceramic rock plate as described above, comprising the following steps:

[0042] (1) Ball milling process: put the raw materials for the 80-degree ultra-white and translucent jade ceramic rock plate into the ball mill in sequence according to the counterweight, then add water, ball mill, sieve, remove iron, and put into a clean slurry pool to obtain slurry;

[0043] (2) Aging process: The slurry obtained in the ball milling process flows into the slurry pool, is stirred evenly, and aged for more than 48 hours;

[0044] (3) Powder spraying process: The slurry aged in the aging process is supplied to the spray drying tower through the spray tower mud pump, and spray-dried in the spray drying tower to obtain the green body powder of 80-degree ultra-white and translucent jade-like ceramic rock slab.

[0045] As a further implementation method, in step (1), before the raw materials are ball-milled, the bucket of the forklift, the feeder and the conveyor belt need to be cleaned, the balls used for ball milling are high-aluminum balls, and the slurry after ball milling, screening and iron removal is transported to a slurry pool for fully paving tiles, waiting for homogenization and aging.

[0046] As a further embodiment, in step (1), the ball milling process parameters are: the amount of water is 34-37% of the total weight of the dry material, the specific gravity of the ball slurry is 1.65-1.72 g / cm 3 , flow rate 55 to 85 seconds, 10,000-hole sieve fineness 0.2 to 0.8.

[0047] As a further embodiment, in step (3), natural gas is used as fuel for the spray drying tower, and after being sprayed by the spray drying tower, the powder is stored in a dedicated stainless steel powder bin through a clean conveying system.

[0048] As a further embodiment, in step (3), in the powder spraying process, the process parameters of spray drying are: moisture content is controlled at 7-7.5%; bulk density is 0.8-0.9 g / cm 3 ; The powder particle size gradation range is: 30 mesh 3-8%, 40 mesh 20-40%, 60 mesh 35-55%, 120 mesh <3%.

[0049] As a further embodiment, the preparation method of the 80-degree ultra-white translucent jade-like ceramic rock plate also includes (4) a colorant adding step: adding colorant to the slurry obtained after the ball milling and aging steps, mixing and stirring evenly to obtain a color line slurry; and then undergoing a powder spraying step to obtain a color line powder.

[0050] The third purpose of the present invention is achieved by the following technical solution: an 80-degree ultra-white translucent jade-like ceramic rock plate, the blank of the ceramic rock plate is the blank of the 80-degree ultra-white translucent jade-like ceramic rock plate.

[0051] The fourth object of the present invention is achieved by the following technical solution: a method for preparing an 80-degree ultra-white translucent jade-like ceramic rock plate, characterized in that it includes: a blank preparation method and a blank forming method;

[0052] The blank preparation method is the blank preparation method of the 80-degree ultra-white and translucent jade ceramic rock plate as described above;

[0053] The blank forming method comprises the following steps:

[0054] (5) Fabrication process: The blank powder and / or color stripe material are laid according to a preset pattern by a digital fabrication machine, and the blank is dried after being pressed and formed;

[0055] (6) glazing step: applying a glaze to the body dried in step (5); inkjet printing a pattern layer, wherein the pattern layer is aligned with the fabric layer in step (5);

[0056] (7) Polishing and waxing process: firing the body obtained in step (6), treating the surface of the body, and polishing and waxing as needed; or applying effect glaze to the body obtained in step (6), firing, and polishing and waxing the fired body as needed. The glaze includes matte glaze, glossy glaze, full-polished glaze, dry granular glaze, etc. The polishing types include half-polished, full-polished, matte-polished or no-polished.

[0057] 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.

[0058] Example 1 - Example 380 degree ultra-white transparent jade ceramic rock board blank

[0059] Weigh the raw materials according to the ratios in Table 1, and prepare the blanks of jade ceramic rock slabs according to the preparation method after Table 1, and obtain the blanks of jade ceramic rock slabs of different embodiments, as shown in Table 1:

[0060] Table 1 Raw material ratio of jade ceramic rock slabs of Example 1-3

[0061]

[0062] The raw materials used in the frit in Table 1 include sodium feldspar, potassium feldspar, quartz powder, aluminum oxide, zinc oxide, calcite, strontium carbonate, and barium carbonate. The raw materials are mixed, melted at 1530°C, and quenched with water to obtain a crystallized frit. The frit includes the following components by mass percentage: 61.42% SiO2, 16.15% Al2O3, 8.51% CaO, 2.8% K2O, 4.19% Na2O, 5.77% ZnO, 3.52% SrO, and 12.2% BaO;

[0063] The iron content of the ultra-white kaolin and high-plastic mud is ≤0.2%; the iron content of the high-white potassium sodium sand is ≤0.1%; and the dry flexural strength of the high-white plastic mud is 12MPa.

[0064] The method for preparing the jade ceramic rock plate of Example 1 to Example 3 comprises the following steps:

[0065] 1. Production of jade ceramic rock slab blanks:

[0066] (1) Ball milling process: put the raw materials for 80-degree ultra-white and translucent jade-like ceramic rock slabs into the ball mill in turn according to the counterweight, then add water, and put them into a clean slurry pool after ball milling, sieving, and iron removal to obtain slurry; in step (1), before the raw materials are put into the ball, the bucket, feeder, and conveyor belt of the forklift need to be cleaned. The balls used for ball milling are high-aluminum balls. The slurry after ball milling, sieving, and iron removal is transported to a slurry pool that is fully paved with tiles, waiting for homogenization and aging. In step (1), the ball milling process parameters are: the amount of water is 36% of the total weight of the dry material, and the specific gravity of the slurry out of the ball is 1.68g / cm 3 , flow rate 65 seconds, 10,000-hole sieve fineness 0.2~0.8.

[0067] (2) Aging process: The slurry obtained in the ball milling process flows into the slurry pool, is stirred evenly, and aged for more than 48 hours;

[0068] (3) Powder spraying process: The slurry aged in the aging process is supplied to the spray drying tower through the spray tower mud pump, and spray-dried in the spray drying tower to obtain the green body powder of 80-degree ultra-white translucent jade-like ceramic rock plate. In step (3), natural gas is used as the fuel of the spray drying tower. After the powder is sprayed in the spray drying tower, it is stored in a dedicated stainless steel powder bin through a clean conveying system. In step (3), in the powder spraying process, the process parameters of spray drying are: the moisture content of the powder is controlled at 7.0-7.5%; the bulk density is 0.8-0.9g / cm 3 The powder size distribution range is: 30 mesh 3-8%, 40 mesh 20-40%, 60 mesh 35-55%, 120 mesh <3%. The above powder process parameters are conducive to the pressing and molding of the System press.

[0069] (4) Colorant Adding Step: A portion of the slurry obtained after the ball milling and aging steps is taken out as the base material of the color line powder, and the colorant is added, mixed and stirred to obtain the color line slurry; and then the powder spraying step is performed to obtain the color line powder. In this example, three kinds of powders, namely, blank powder, dark gray line material and light gray line material, are used to lay the line material according to a preset pattern by a digital laying machine. The light gray line material is prepared by adding 0.12% of silver gray material to the ball milled glaze slurry 100 (dry weight) and spray drying to obtain the light gray line powder; for the dark gray blank, 0.12% of blank black material, 0.04% of silver gray material and 0.05% of dark brown material are added to the ball milled glaze slurry 100 (dry weight) and spray drying to obtain the dark gray powder.

[0070] 2. Jade ceramic rock plate forming method:

[0071] (5) Fabrication process: The blank powder and the color stripe material are laid out by a digital fabrication machine according to a preset pattern, and the blank is dried after being pressed and formed;

[0072] (6) glazing step: applying a glaze to the body dried in step (5); inkjet printing a pattern layer, wherein the pattern layer is aligned with the fabric layer in step (5);

[0073] (7) Polishing and waxing process: sintering the green body obtained in step (6), treating the surface of the green body, and polishing and waxing it as needed.

[0074] Comparative Example 1

[0075] Compared with Example 2, the difference of Comparative Example 1 is that in the raw material ratio of the jade ceramic rock slab, the amount of frit is less than 20 parts, i.e., 18 parts, and the remaining formula composition and production method conditions refer to Example 2.

[0076] Comparative Example 2

[0077] Compared with Example 2, the difference of Example 2 is that in the raw material ratio of the jade ceramic rock slab, the amount of frit is greater than 40 parts, i.e. 45 parts, and the remaining formula composition and production method conditions refer to Example 2.

[0078] Comparative Example 3

[0079] Compared with Example 2, the difference of Comparative Example 3 is that the formula of the frit is different in the raw material ratio of the jade ceramic rock plate, and the frit formula of Example C of Patent No. ZL202111203717.2 is adopted. The raw materials used in the frit include sodium feldspar, potassium feldspar, quartz powder, aluminum oxide, zinc oxide, calcite, calcite, soda ash, barium carbonate, calcium fluoride, apatite, etc., which are mixed, melted at 1530°C, and water quenched to obtain a crystallized frit. The frit, by mass percentage, includes: 67.80% SiO2, 13.01% Al2O3, 3.02% CaO, 3.11 MgO, 0.48% K2O, 3.00% Na2O, 2.15% ZnO, 3.07% BaO, 1.48 P2O5 and 2.88 CaF2. For other formulations and preparation conditions, see Example 2.

[0080] Comparative Example 4

[0081] Compared with Example 2, the difference of Comparative Example 4 is that in the preparation process of jade ceramic rock plate, in step (1) ball milling process, before the raw material of the blank is put into the ball mill, the step of cleaning the bucket of the forklift, the feeder and the conveyor belt is eliminated, the ball used in the ball milling is a conventional ball mill, and the slurry after ball milling, screening and iron removal is transported into a conventional slurry pool to wait for homogenization and aging. The rest of the formula composition and the conditions of the preparation method refer to Example 2.

[0082] Comparative Example 5

[0083] Compared with Example 2, the difference of Comparative Example 5 is that in the preparation process of the jade ceramic rock plate, in the powder spraying process of step (3), the spray drying process parameters are: the moisture content is controlled to be 9-10.4%; the bulk density is 0.93-0.96; the particle size distribution range is: 20 mesh ≤2%, 40 mesh 40-50%, 60 mesh 35-50%, 100 mesh ≤15%, and below 100 mesh, <2%. The remaining formula composition and the conditions of the preparation method refer to Example 2.

[0084] Comparative Example 6

[0085] Compared with Example 2, the difference of Example 6 is that in the preparation process of jade ceramic rock slabs, in step (3), conventional coal is used as fuel for the spray drying tower, and after being sprayed with powder in the spray drying tower, it is stored in a dedicated stainless steel powder bin through a clean conveying system.

[0086] Comparative Example 7

[0087] Purchase similar jade ceramic rock slabs in the industry and buy jade-like fish belly white effect ceramic slabs sold by Guangdong Tribeca Building Materials Technology Co., Ltd.

[0088] Effect evaluation and performance testing

[0089] 1. For the ceramic rock slabs of Example 2 and Comparative Examples 1-7, the performance indicators such as green body dry strength, whiteness after firing, light transmittance, maximum wave deformation, and rupture modulus were measured in accordance with the provisions of GB / T 4100-2015. The test items and results are shown in Table 2.

[0090] Table 2 Performance test data of ceramic rock panels of Example 2 and Comparative Examples 1-7

[0091]

[0092]

[0093] As shown in the above table, the jade ceramic rock slab of this embodiment maintains the physical and chemical properties of the green body such as flexural strength, modulus of rupture and firing temperature range. At the same time, it has improved to a higher level in terms of high whiteness (green body whiteness ≥ 85 degrees), light transmittance (light transmittance ≥ 6.5%), and more delicate and warm texture, making the light transmittance of the ceramic large slabs and rock slabs softer, warmer and more transparent under the light, with a more delicate texture, and more suitable for application in scenes with certain lighting effects. Figure 1 This is a picture of the ceramic rock plate of Example 2 when it is illuminated from bottom to top by a light source. Figure 2 This is a picture of the ceramic rock plate of comparative example 7 when illuminated from bottom to top by the same light source. As can be seen from the picture, the ceramic rock plate of the present invention has better light transmittance, and after light transmission, it is light in the middle and dark around, with obvious dividing lines and no dizziness.

[0094] Compared with Example 2, the difference in the formula of the ceramic rock slabs in Comparative Examples 1-2 lies in that the dosage range of the raw material melt of the blank exceeds the dosage range of the present application. For Comparative Example 1 with less than 20 parts, the whiteness of the blank after firing is low, the light transmittance is poor, and the light perception to the naked eye is poor; for Comparative Example 2 with more than 40 parts, the dry strength of the green blank is reduced, the maximum wave deformation is increased, and the modulus of rupture is reduced.

[0095] Compared with Example 2, the formula difference of the ceramic rock board in Comparative Example 3 is that the frit of the same product is used instead of the frit of the present application. The data show that the light transmittance of Comparative Example 3 is deteriorated and the light perception to the naked eye is deteriorated.

[0096] Compared with Example 2, the difference of the ceramic rock plate in Comparative Example 4 is that in the ball milling process of the preparation method step (1), before the raw material of the blank enters the ball mill, the step of cleaning the bucket of the forklift, the feeder, and the conveyor belt is eliminated. The balls used in the ball milling are conventional ball mills. The slurry after ball milling, screening, and iron removal is transported to a conventional slurry pool for homogenization and aging. The data show that the whiteness of the blank of Comparative Example 4 becomes lower after firing, the light transmittance becomes worse, and the light perception of the naked eye becomes worse.

[0097] Compared with Example 2, the difference between the ceramic rock plate of Comparative Example 5 and Example 2 is that in the powder spraying process of the preparation method step (3), the spray drying process parameters are: the moisture content is controlled at 9-10.4%; the bulk density is 0.93-0.96; the particle size distribution range is: 20 mesh ≤ 2%, 40 mesh 40-50%, 60 mesh 35-50%, 100 mesh ≤ 15%, and below 100 mesh, <2%. The data show that the performance indicators of Comparative Example 5 after firing are close to those of Example 2, but Comparative Example 5 is not conducive to the pressing and molding of the existing System press due to its large moisture content.

[0098] Compared with Example 2, the difference in the ceramic rock plate of Comparative Example 6 is that in the powder spraying process of step (3) of the preparation method, conventional coal is used as the fuel of the spray drying tower. After powder spraying in the spray drying tower, it is stored in a dedicated stainless steel powder bin through a clean conveying system. The data show that the powder of Comparative Example 6 contains impurities such as coal ash, and the whiteness of the green body becomes lower after firing, the light transmittance becomes worse, and the light perception of the naked eye becomes worse.

[0099] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A blank of 80 degree ultra-white and translucent jade ceramic rock plate, characterized in that: The invention comprises a blank layer, wherein the blank layer is composed of the following blanks in parts by weight: 15 to 30 parts of ultra-white kaolin, 5 to 10 parts of high-white plastic mud, 30 to 60 parts of high-white potassium sodium sand, 20 to 40 parts of frit, 0 to 5 parts of calcined talc, and 0.1 to 1 part of blank reinforcing agent; The frit includes the following components by mass percentage: 50.0-65.0% SiO2, 14.0-19.0% Al2O3, 3.0-12.0% CaO, 0.5-4.0% K2O, 3.0-6.0% Na2O, 2.0-6.0% ZnO, 2.0-6.0% SrO, 5.0-15% BaO; The iron content of the ultra-white kaolin and high plastic mud is ≤0.2%; the iron content of the high white potassium sodium sand is ≤0.1%; and the dry flexural strength of the high white plastic mud is 8-15MPa.

2. The blank of the 80-degree ultra-white and translucent jade ceramic rock plate according to claim 1, characterized in that: The blank also includes colorant, which accounts for 0.5-4% of the total mass of the ingredients.

3. A method for preparing a blank of an 80-degree ultra-white and translucent jade-like ceramic rock plate as claimed in claim 1 or 2, characterized in that: The method comprises the following steps: (1) ball milling process: the raw materials for the 80-degree ultra-white and translucent jade ceramic rock plate are put into the ball mill in sequence according to the weight, and then water is added, and after ball milling, screening, and iron removal, the raw materials are put into a clean slurry pool to obtain a slurry; (2) Aging process: The slurry obtained in the ball milling process flows into the slurry pool, is stirred evenly, and aged for more than 48 hours; (3) Powder spraying process: The slurry aged in the aging process is supplied to the spray drying tower through the spray tower mud pump, and spray-dried in the spray drying tower to obtain the green body powder of 80-degree ultra-white and translucent jade-like ceramic rock slab.

4. The method for preparing the 80-degree ultra-white translucent jade ceramic rock plate according to claim 3, characterized in that: In step (1), before the raw materials are ball milled, the bucket of the forklift, the feeder and the conveyor belt need to be cleaned. The balls used in ball milling are high-aluminum balls. The slurry after ball milling, screening and iron removal is transported to the slurry pool for fully paving tiles, waiting for homogenization and aging.

5. The method for preparing the 80-degree ultra-white translucent jade-like ceramic rock plate according to claim 3, characterized in that: In step (1), the ball milling process parameters are: the amount of water is 34-37% of the total weight of the dry material, and the specific gravity of the ball slurry is 1.65-1.72 g / cm 3 , flow rate 55 to 85 seconds, 10,000-hole sieve fineness 0.2 to 0.

8.

6. The method for preparing the 80-degree ultra-white and translucent jade-like ceramic rock plate according to claim 3, characterized in that: In step (3), natural gas is used as the fuel of the spray drying tower. After being sprayed by the spray drying tower, the powder is transported into a dedicated stainless steel powder bin for storage through a clean conveying system.

7. The method for preparing the 80-degree ultra-white and translucent jade-like ceramic rock plate according to claim 3, characterized in that: In step (3), in the powder spraying process, the process parameters of spray drying are: moisture content is controlled at 7-7.5%; bulk density is 0.8-0.9 g / cm 3 ; The powder particle size gradation range is: 30 mesh 3-8%, 40 mesh 20-40%, 60 mesh 35-55%, 120 mesh <3%.

8. The method for preparing the 80-degree ultra-white and translucent jade-like ceramic rock plate according to claim 3, characterized in that: The method further comprises (4) a pigment adding step: adding pigment to the slurry obtained after the ball milling and aging steps, and mixing and stirring the slurry to obtain a color line slurry; and then performing a powder spraying step to obtain a color line powder.

9. An 80-degree ultra-white, translucent jade-like ceramic rock plate, characterized in that: The blank of the ceramic rock slab is the blank of the 80-degree ultra-white and translucent jade-like ceramic rock slab as described in claim 1 or 2.

10. A method for preparing 80-degree ultra-white translucent jade-like ceramic rock plate, characterized in that: include: Blank preparation method and blank forming method; The blank preparation method is the method for preparing the blank of the 80-degree ultra-white and translucent jade-like ceramic rock slab as claimed in any one of claims 3 to 8; The blank forming method comprises the following steps: (5) Fabrication process: The blank powder and / or color stripe material are laid according to a preset pattern by a digital fabrication machine, and the blank is dried after being pressed and formed; (6) glazing step: applying a glaze to the body dried in step (5); inkjet printing a pattern layer, wherein the pattern layer is aligned with the fabric layer in step (5); (7) Polishing and waxing process: firing the body obtained in step (6), treating the surface of the body, and polishing and waxing the body as needed; or applying effect glaze to the body obtained in step (6), firing the body, and polishing and waxing the fired body as needed.

Images