High whiteness, silk-like, eco-type ceramic composition and use thereof

Abstract

The application discloses a high-whiteness mercerized texture ecological ceramic composition and application thereof, and the ceramic composition comprises teacrystal, high-whiteness tubular hard clay, super-white washed ball clay, super-white alpha-Al2O3, super-white quartz sand, high-whiteness fused block and an ecological mineralizer. The teacrystal contains multiple rare earths and active elements, and contains a large amount of nutritional elements, and the ecological mineralizer is used in the high-whiteness mercerized texture ecological ceramic composition, so that the crystal generation among materials is promoted, the ceramic composition is made to be opaque, and the covering ability of the ceramic body is enhanced. The ceramic product prepared by the method has a surface whiteness of 65 degrees or more, a mercerized texture of 2-3 luster units, a wear resistance of 5 levels or more, and has functions such as antibiosis, and is an ideal environment-friendly decorative product.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ceramic material production, in particular to a high-whiteness, silk-gloss, and eco-friendly ceramic composition, and further relates to a method for preparing a ceramic rock plate from the ceramic composition and the ceramic rock plate prepared thereby. BACKGROUND

[0002] With the continuous development of science and technology and the increasing improvement of people's living standards, building decoration and decorative materials are increasingly developing towards environmental protection, functionalization, and intelligentization. Meanwhile, people's aesthetic view is becoming more and more individualized, and the style is becoming more and more diversified, which puts forward higher requirements for new decorative materials.

[0003] As a new type of ceramic product, ceramic rock plate is a brand-new concept evolved from ceramic large plate, and has the following main features: large size, complete thickness, rich surface texture, simple and elegant decoration effect, small joint, high construction and paving efficiency, and good overall decoration effect, which makes it have a high market share in the high-end home product industry. Ceramic rock plate is a multifunctional material processed into different specifications and shapes and applied to different areas of home, such as tea table, table top, kitchen table, cabinet, wardrobe panel, etc. In particular, the high-whiteness, silk-gloss, wear-resistant, and antibacterial eco-friendly functional ceramic rock plate is more environmentally friendly and healthy than artificial stone, quartz stone, marble, granite, and ordinary rock plate, and the silk-gloss texture and antibacterial function are very consistent with the requirements of health and environmental protection. At the same time, the texture is artificially created, and the penetration effect makes the color and texture level rich and varied, and the silk-gloss texture of 2-3 gloss units. These factors together determine that the high-whiteness, silk-gloss, wear-resistant, and antibacterial eco-friendly functional ceramic rock plate is increasingly favored by consumers, and has a broad application market and huge economic benefits.

[0004] However, since the birth of ceramic rock plate, the entire ceramic rock plate industry has followed the decoration process and materials of ceramic tiles, and the ecological functionality is relatively weak. With the application of ceramic rock plate in home space, the high-end home industry has a sharp increase in demand for functional health and environmental protection, and producers and researchers are committed to obtaining an eco-friendly functional ceramic rock plate.

[0005] At present, zircon is commonly used as an opacifier in the ceramic industry to obtain a high-whiteness and high-gloss glaze surface of wall and floor tiles / ceramic rock plates. However, China is short of zircon resources and relies heavily on imports, and the price is rising, which increases the cost of enterprises. In addition, general zircon is associated with some radioactive elements and is difficult to separate in the later processing. Long-term living in an environment with radioactivity can cause harm to health. The high-gloss surface is prone to reflection, causing so-called light pollution, which is not suitable for decoration in some places. The glass phase of glaze material is relatively more, and the hardness is low, and the wear resistance is poor. The presence of polycrystals in porcelain material can improve the above-mentioned properties. Therefore, it is of great significance to study a high-whiteness, silk-gloss, and eco-friendly ceramic composition without zircon opacification and its application.

[0006] At present, the research on zirconium-free opalescence in the ceramic industry is less, and the application range is relatively narrow. There is no high-whiteness and high-coverage ecological ceramic composition with silk luster and low cost on the market, and no ceramic rock plate using the ceramic composition. SUMMARY

[0007] In view of the above problems, the present application studies the existing ceramic surface material, and through continuous testing and innovation, introduces tea crystal stone instead of feldspar, adds an appropriate amount of ecological mineralizer, and cooperates with other ingredients to obtain a high-whiteness and high-coverage ecological ceramic composition with silk luster, so that the crystal is increased, the extinction is lost, and the high-whiteness, silk luster and ecological functionality are obtained, and then the ceramic composition is applied to the ceramic rock plate blank to make a healthy and environmentally friendly functional ceramic rock plate product.

[0008] The technical scheme of the present application is as follows:

[0009] A high-whiteness and high-coverage ecological ceramic composition with silk luster, characterized in that it comprises the following raw materials by weight:

[0010]

[0011] Because the high-whiteness and high-coverage ecological ceramic composition with silk luster breaks through the traditional zirconium opalescence method, generates multiple crystals and has strong covering power, high whiteness, silk luster and ecological functionality, the grinding fineness, slurry thickness, high temperature sintering and other aspects need to be strictly controlled during production, and among them, the rationality of the high-whiteness and high-coverage ecological ceramic composition with silk luster formula plays a very key role in whether the product performance can adapt to actual production. The high-whiteness and high-coverage ecological ceramic composition with silk luster involves the optimization of raw materials, the proportioning of materials, the selection of additives, etc., and any unreasonable link will lead to the decomposition and melting of crystals, and then lose functionality and increase transparency, so as to be unable to effectively cover the blank.

[0012] The ecological mineralizer added in the high-whiteness and high-coverage ecological ceramic composition with silk luster is strontium silicate mineral, which uses light and active strontium element to promote crystal formation and growth, and increases the wear resistance of the material. Unlike strontium carbonate which completely decomposes and participates in the reaction to form a glass phase, it is not conducive to increasing the wear resistance of the material. The fineness of the ecological mineralizer is 200-300 mesh.

[0013] Preferably, in the high-whiteness, silky-look, eco-type ceramic composition, the tea crystal stone is a natural inorganic non-metallic mineral containing more than 16 rare earth elements, rich in light metal rubidium element and more than ten plant growth nutrients. The tea crystal stone enriched and purified by pure physical method has a weight percentage of Fe2O3≤0.1%, which is beneficial to the improvement of the whiteness of the material. The light active rubidium and rare earth elements promote the formation and growth of crystals and have lanthanide antibacterial properties, which determine the functionality of the material in many ways.

[0014] Preferably, in the high-whiteness, silky-look, eco-type ceramic composition, the high-white tubular hard clay has a weight percentage of Al2O3≥38% and a weight percentage of Fe2O3≤0.15% in the chemical composition, and a whiteness after firing of 90 degrees or more. The higher the whiteness, the more conducive to the whiteness of the ceramic material and the performance of the inkjet pattern. The high-white tubular hard clay is the main source of Al2O3 in the chemical composition of the ceramic composition, and forms mullite crystal phase with SiO2 at high temperature, which is the main skeleton of the ceramic composition. Due to its suspension, plasticity and easy gelation characteristics, the suspension and flowability of the slurry are increased, and the suspension and easy mixing of the ceramic composition slurry during slurry preparation, slurry spraying and transportation are ensured.

[0015] Preferably, in the high-whiteness, silky-look, eco-type ceramic composition, the super-white washed ball clay has a weight percentage of Al2O3≥33% and a weight percentage of Fe2O3≤0.4% in the chemical composition, and a whiteness after firing of 80 degrees or more. In addition to the aforementioned Al2O3 performance, the suspension of the slurry is mainly increased, so that the ceramic composition slurry does not precipitate.

[0016] Preferably, in the high-whiteness, silky-look, eco-type ceramic composition, the super-white α-Al2O3 has a weight percentage of Al2O3≥98% in the chemical composition, and a whiteness after firing of 95 degrees or more. The crystal structure is stable, most of which exists in the high-whiteness, silky-look, eco-type ceramic composition in the form of its own shape crystal, which plays a role in wear resistance, slip resistance, etc.

[0017] More preferably, the super-white α-Al2O3 is spherical alumina with a particle size of less than 44 μm, which is conducive to the smoothness of the surface and the texture and effect of the silky surface.

[0018] Preferably, in the high-whiteness, silky-look, eco-type ceramic composition, the super-white quartz sand has a weight percentage of SiO2≥96% and a weight percentage of Fe2O3≤0.05% in the chemical composition, and a whiteness after firing of 95 degrees or more. The super-white quartz sand is the main source of quartz crystal in ceramic materials and is also the main component of mullite crystal phase formation, so that the more mullite crystal phase is formed, the more wear-resistant the ceramic composition is.

[0019] Preferably, in the high-whiteness, silky-look, ecological ceramic composition, the high-whiteness frit contains 4.3%-4.9% BaO and 2.8%-3.4% B2O3 in the chemical composition, which is different from the great influence of directly introducing BaCO3 and borax on the performance of the slurry, and is not conducive to the process implementation. The high-whiteness frit with an initial melting point of 1000-1050℃ is conducive to the firing process control. The barium in the high-whiteness frit produces special light waves in the high-whiteness, silky-look, ecological ceramic composition with strong hiding power, forming a silky look. At the same time, the boron element has antibacterial properties, increasing the antibacterial function of the ceramic material.

[0020] Preferably, in the high-whiteness, silky-look, ecological ceramic composition, the weight percentage of SrO in the chemical composition of the ecological mineralizer is ≥35%, and the weight percentage of SiO2 is between 40%-60%, mainly in the form of strontium silicate.

[0021] More preferably, the ecological mineralizer is a block-shaped material formed after removing a large amount of organic matter and water from a strontium-rich natural mineral through high-temperature calcination and decomposing and removing a large amount of sulfate.

[0022] Further preferably, the ecological mineralizer is a block-shaped material with a strontium content of more than 37% and a Fe2O3 content of not more than 0.3% after high-temperature calcination of a strontium-rich natural mineral, and a standard powder of 200-300 mesh is formed after grinding. The use of the standard powder of the ecological mineralizer does not affect the whiteness, further promotes the formation and growth of crystals in the material, increases the types and quantities of nutrient elements, and significantly improves the wear resistance of the material.

[0023] To improve the ecological functionality of ceramic rock plate decorative materials, most ceramic rock plate producers adjust the formula of the surface layer ceramic material to increase the content of alumina in the ceramic material and adjust the kiln firing curve, so as to increase the mullite phase in the finished product after firing, thereby increasing the hardness and wear resistance of the surface of the ceramic rock plate. However, due to the pursuit of fast firing process, the amount of mullite crystal phase formed is small, and the surface texture cannot reach the silky effect. In the high-whiteness, silky-look, ecological ceramic composition of the present application, the ecological mineralizer is added, and components such as tea crystal stone, high-whiteness tubular hardness clay, super-white washed ball clay, super-white alpha-Al2O3, super-white quartz sand, and high-whiteness frit are reasonably adjusted, under the joint action of light active elements and rare earth elements, to promote the formation of mullite, corundum, quartz, anorthite, diopside, wollastonite, and other crystals, increase the amount of generated crystals, and optimize the characteristics of the original crystals, so as to form a high-whiteness, high-hardness, silky-look, ecological ceramic composition.

[0024] Preferably, in the high-whiteness, silky-look, ecological ceramic composition, the following raw materials are included in the weight parts:

[0025]

[0026] More preferably, in the high-whiteness, silk-look, ecological ceramic composition, the raw materials include the following weight parts:

[0027]

[0028] In addition, the application also provides a method for preparing high-whiteness, silk-look, wear-resistant, and antibacterial ecological functional ceramic rock plates using the high-whiteness, silk-look, ecological ceramic composition.

[0029] Preferably, in the above application, the process for preparing high-whiteness, silk-look, wear-resistant, and antibacterial ecological functional ceramic rock plates includes the following steps:

[0030] A. Green body preparation of ceramic rock plate blank: the blank raw materials are weighed according to the blank formula, mixed, ball milled after adding water, and a slurry is prepared. The obtained slurry is sieved and de-ironed to remove coarse particles and iron-containing impurities. The obtained slurry is then spray dried, sieved and de-ironed, and then aged to obtain blank powder for ceramic rock plates. Finally, the obtained blank powder is pressed and dried to obtain a green body of a ceramic rock plate blank.

[0031] B. Preparation of ceramic composition slurry: a. High-whiteness, silk-look, ecological ceramic composition batching: raw materials, specifically tektite, high-whiteness tubular hardness clay, super-white washed ball clay, super-white alpha-Al2O3, super-white quartz sand, high-whiteness fused block, and ecological mineralizer, are weighed; b. The above raw materials are mixed, and then ball milled after adding water, appropriate additives, and colorants to prepare a slurry. The processing fineness of the slurry is 0.5%-0.8% on a 325 mesh sieve, and the specific gravity is 1.80-1.85 g / ml; c. The slurry obtained in step b is sieved and de-ironed to remove coarse particles and iron-containing impurities; d. The slurry obtained in step c is mixed uniformly and aged for standby use.

[0032] C. Preparation of ceramic rock plate biscuit: after adjusting the slurry flow rate to 35-45 s in an NK-2 rock viscosity cup and the specific gravity to 1.75-1.80 g / ml, the slurry is applied to the ceramic rock plate blank green body obtained in step A at a rate of 300-1500 g / m 2 , and after drying, a ceramic rock plate biscuit is obtained.

[0033] D. Inkjet decoration and firing: the ceramic rock plate biscuit obtained in step C is inkjet permeation decorated and then fired to obtain a high-whiteness, silk-look, wear-resistant, and antibacterial ecological functional ceramic rock plate.

[0034] The ceramic rock plate prepared by the above process has the following characteristics: ① the product surface whiteness is 65 degrees or more on the basis of 20 degrees or more whiteness of the body; ② 2-3 degrees of silk luster; ③ wear resistance: 5 levels or more; ④ antibacterial rate: Staphylococcus aureus: ≥95%, Escherichia coli: ≥95%.

[0035] Preferably, in the step of preparing the high-whiteness, silk luster, wear-resistant, and antibacterial ecological functional ceramic rock plate, the weight of the water added in step B is 28-32 parts.

[0036] Preferably, in the step of preparing the high-whiteness, silk luster, wear-resistant, and antibacterial ecological functional ceramic rock plate, a dispersant, a plasticizer, and a color aid are added before the ball milling in step B; the dispersant is a conventional dispersant in the field, such as sodium phosphate, sodium hexametaphosphate, sodium tripolyphosphate, and sodium polyacrylate; the plasticizer is sodium carboxymethyl cellulose (CMC); and the color aid is titanium dioxide, porous silicon dioxide, and zinc oxide.

[0037] More preferably, in the step of preparing the high-whiteness, silk luster, wear-resistant, and antibacterial ecological functional ceramic rock plate, the dispersant is sodium tripolyphosphate and sodium polyacrylate (molecular weight 3000-5000), the plasticizer is sodium carboxymethyl cellulose (PAC-L), and the color aid is rutile titanium dioxide, nano porous silicon dioxide, and zinc oxide (ZnO≥96%).

[0038] Preferably, in the step of preparing the high-whiteness, silk luster, wear-resistant, and antibacterial ecological functional ceramic rock plate, the total weight of the dispersant and the plasticizer accounts for 1.2%-2.6% of the total weight of the ceramic composition slurry, and the total weight of the color aid accounts for 3.5%-6.1% of the total weight of the ceramic composition slurry.

[0039] Preferably, in the step of preparing the high-whiteness, silk face, wear-resistant, and antibacterial ecological functional ceramic rock plate, the dispersant is sodium tripolyphosphate and sodium polyacrylate (molecular weight 3000-5000); the plasticizer is sodium carboxymethyl cellulose (PAC-L); and the color aid is rutile titanium dioxide, nano porous silica, and zinc oxide (ZnO≥96%). The weight percentage of sodium tripolyphosphate in the total weight of the ceramic composition slurry is 0.1%-0.3%; the weight percentage of sodium polyacrylate (molecular weight 3000-5000) in the total weight of the ceramic composition slurry is 1%-2%; the weight percentage of sodium carboxymethyl cellulose (PAC-L) in the total weight of the ceramic composition slurry is 0.1%-0.3%; the weight percentage of rutile titanium dioxide in the total weight of the ceramic composition slurry is 0.3%-0.6%; the weight percentage of nano porous silica in the total weight of the ceramic composition slurry is 3%-5%; and the weight percentage of zinc oxide (ZnO≥96%) in the total weight of the ceramic composition slurry is 0.2%-0.5%.

[0040] In the preparation process, the dispersant ensures the flowability of the slurry, and the plasticizer ensures the suspensibility of the slurry, which helps to stabilize the slurry and provides more stable slurry performance for subsequent use.

[0041] In the preparation process, the color aid ensures the color development of the penetrating ink, wherein the rutile titanium dioxide helps yellow color development, the nano porous silica helps brown-red color development, and the zinc oxide (ZnO≥96%) helps blue color development.

[0042] Preferably, in the step of preparing the high-whiteness, silk face, wear-resistant, and antibacterial functional ceramic rock plate, the ceramic composition slurry obtained in the step B has a processing fineness of 0.5%-0.8% on a 325 mesh sieve and a specific gravity of 1.80-1.85 g / ml.

[0043] The processing fineness of the ceramic composition slurry after ball milling directly affects the formation of polycrystals and the surface effect of the ceramic rock plate after subsequent firing. Generally, the finer the particle size of the slurry, the larger the specific surface area, the higher the combination rate with the same surface area of the ecological mineralizer, the more complete and numerous the generated crystal phase, the stronger the covering power on the surface of the body, and the higher the surface layer hardness, wear resistance, and slip resistance.

[0044] Preferably, in the step b of the step B in the step of preparing the high-whiteness, silk face, wear-resistant, and antibacterial ecological functional ceramic rock plate, the slurry is sieved using an 80-150 mesh vibrating sieve, and more preferably, coarse particles are removed through two layers of 150 mesh sieve nets, so that the particle size distribution of the slurry is uniform, which helps to improve the sintering degree of the product during the later firing, thereby improving the surface quality and effect of the product.

[0045] Preferably, in the step of preparing the high-whiteness, silk-finished, wear-resistant and antibacterial ecological functional ceramic rock plate, the step b in the step B, the iron removal of the slurry is performed by an iron removal machine equipped with a strong magnet, more preferably by a high-frequency gauss full-automatic magnetic separation iron removal machine, which can remove the harmful fine iron residues in the slurry, thereby improving the whiteness of the product and improving the oxidation performance in the later firing process.

[0046] In the step of preparing the high-whiteness, silk-finished, wear-resistant and antibacterial ecological functional ceramic rock plate, by removing coarse particles and iron-containing impurities, the possibility of the product having melt holes and impurities during the firing process can be eliminated, thereby helping to improve the surface quality of the entire product after firing.

[0047] Preferably, in the step of preparing the high-whiteness, silk-finished, wear-resistant and antibacterial ecological functional ceramic rock plate, the step C, the slurry application method is a conventional slurry application method in the art, such as high-pressure spraying, bell tower spraying, knife-type spraying machine spraying, and spraying machine spraying, and one or a combination of multiple methods can be optionally used during the slurry application process.

[0048] More preferably, in the step of preparing the high-whiteness, silk-finished, wear-resistant and antibacterial ecological functional ceramic rock plate, the step C, the slurry application method is bell tower spraying, wherein the slurry application parameter specific gravity is 1.75-1.80 g / ml, the flow rate is 35-45 s for a NK-2 rock viscosity cup, and the slurry application weight is 300-1500 g / m 2 .

[0049] Preferably, in the step of preparing the high-whiteness, silk-finished, wear-resistant and antibacterial ecological functional ceramic rock plate, the step C, the drying of the ceramic rock plate body after the slurry spraying is performed in a drying kiln, wherein the temperature of the drying kiln is 150-180℃, the drying time is 60-90 min, and the water content of the ceramic rock plate body after drying is 0.1%-0.3%.

[0050] More preferably, in the step of preparing the high-whiteness, silk-finished, wear-resistant and antibacterial ecological functional ceramic rock plate, the step C, the water content of the surface layer of the ceramic rock plate body after drying is 0.1%-0.3%, and a large amount of water is removed from the surface capillary pores after drying, which is beneficial to the inkjet penetration effect.

[0051] Preferably, in the step of preparing the high-whiteness, silk-finished, wear-resistant and antibacterial ecological functional ceramic rock plate, the step D, the inkjet method is a conventional inkjet method in the art, and the inkjet in the step D is not different from the conventional ceramic rock plate production, and the parameters involved in the inkjet are limited according to the desired effect.

[0052] More preferably, in the step of preparing the high-whiteness, silk face, wear-resistant, and antibacterial ecological functional ceramic rock plate, in the step D, the material for inkjet is permeable ink and permeable agent, wherein the permeable ink and the high-whiteness, silk face, and ecological ceramic composition containing a colorant react to form a pattern in situ; the permeable agent helps the permeable ink to penetrate into the surface layer of the ceramic composition to form a three-dimensional pattern effect.

[0053] Preferably, in the step of preparing the high-whiteness, silk face, wear-resistant, and antibacterial ecological functional ceramic rock plate, in the step D, the sintering is performed in a sintering kiln, wherein the temperature of the kiln is set to 1200-1220℃, and the sintering time is 50-70min, and the high-whiteness, silk face, wear-resistant, and antibacterial ecological functional ceramic rock plate can be obtained after sintering.

[0054] Compared with the prior art, the present application has the following beneficial effects:

[0055] 1. The present application adjusts the formula of the high-whiteness, silk face, and ecological ceramic composition, generates or promotes a plurality of crystals to form in situ under the action of an ecological mineralizer, and the number of the crystals is relatively large. The high-whiteness, silk face, and ecological ceramic composition can achieve a whiteness of more than 65 degrees on the surface of a green body with a very low whiteness of 20 degrees without zirconium, and the surface hardness of the ceramic rock plate product is improved due to the existence of a plurality of crystals on the surface layer of the ceramic composition, so that the surface of the ceramic rock plate product is more wear-resistant and slip-resistant.

[0056] 2. In the present application, the high-whiteness, silk face, and ecological ceramic composition has a strong hiding power, contains natural mineral tea crystal stone containing a plurality of rare earth elements and nutritional elements, and contains a boron-containing clinker and zinc oxide and titanium white in the colorant, which makes the high-whiteness, silk face, and ecological ceramic composition have antibacterial properties without adding an antibacterial agent, and realizes the ecological functionality of the ceramic rock plate.

[0057] 3. The preparation process of the high-whiteness, silk face, wear-resistant, and antibacterial ecological functional ceramic rock plate is simple, and the process of producing the ceramic rock plate does not need to additionally increase equipment and does not need to greatly change the conventional ceramic rock plate production process, so that the purpose of preparing the ecological functional ceramic rock plate can be achieved. DETAILED DESCRIPTION

[0058] In order to make the technical solutions and advantages of the present application clearer and more explicit, the technical solutions of the present application will be described more clearly and completely in combination with specific examples. In the examples, the equipment used is the same as the production equipment used in the conventional ceramic rock plate unless otherwise specified.

[0059] The raw materials used in the following examples are all commercially available, wherein the tea crystal stone is purchased from Inner Mongolia H Company, Al2O3≥12.5%, Fe2O3≤0.1%; the high-white tubular hard clay is purchased from Foshan City T Company, Al2O3≥38%, Fe2O3≤0.15%, and the whiteness after firing is above 90 degrees; the super-white washed ball clay is purchased from Shanghai C Company, Al2O3≥33%, Fe2O3≤0.4%, and the whiteness after firing is above 80 degrees; the super-white α-Al2O3 is purchased from Hangzhou X Company, Al2O3≥98%, and the whiteness after firing is above 95 degrees; the super-white quartz sand is purchased from Yingde City F Company, SiO2≥96%, Fe2O3≤0.05%, and the whiteness after firing is above 95 degrees; the high-white clinker is purchased from Jiangsu B Company, BaO 4.3%-4.9%, B2O3 2.8%-3.4%, Fe2O3≤0.05%, and the particle size is below 10 mesh; and the ecological mineralizer is purchased from Zibo Z Company, SrO≥37.3%, Fe2O3≤0.3%, and the particle size is 200-300 mesh.

[0060] Preparation Examples

[0061] Preparation Example 1

[0062] A. Preparation of ceramic rock plate body green body: the body raw materials are weighed according to the body formula, the body raw materials are mixed, and then ball-milled after adding water to obtain a slurry; the obtained slurry is sieved and de-ironed to remove coarse particles and iron-containing impurities; then the obtained slurry is spray-dried, sieved and de-ironed, and then aged to obtain a body powder for ceramic rock plate; finally, the obtained body powder is pressed and dried to obtain a ceramic rock plate body green body;

[0063] B. Preparation of ceramic composition slurry: a. the raw materials of the high-whiteness, silky-feeling, and ecological ceramic composition are weighed according to Table 1; b. the raw materials weighed in step a are mixed until uniform, and then water, sodium tripolyphosphate, sodium carboxymethyl cellulose, zinc oxide, and rutile titanium white powder are added in the amounts shown in Table 1, and then placed in a ball mill for ball milling until the processing fineness of the slurry is 1.0% on a 325 mesh sieve; then an auxiliary red agent is added and ground for 1.5-2.5 h to obtain a processing fineness of 0.8% on a 325 mesh sieve and a specific gravity of 1.80 g / ml; c. the slurry obtained in step b is sieved through 80 mesh and 100 mesh vibrating screens to remove coarse particles, and then placed in a high-frequency Gauss automatic magnetic separator for de-ironing to obtain a slurry from which coarse particles and iron-containing fine impurities have been removed; d. the slurry obtained in step c is mixed uniformly and aged for 48 h for standby use;

[0064] C. Ceramic rock plate body preparation: after adjusting the flow rate of the slurry obtained in step B to 45 s in the NK-2 rock field viscosity cup and the specific gravity to 1.80 g / ml, the slurry is sprayed on the ceramic rock plate body green body obtained in step A in the bell jar sprayer, and the spraying weight is 650 g / m 2 The ceramic rock plate body after spraying is placed in a drying kiln for drying, wherein the temperature of the drying kiln is 180℃, the drying time is 60 min, and the water content of the ceramic rock plate body after drying is 0.1%, and after drying, the ceramic rock plate body is obtained;

[0065] D. Inkjet decoration and firing: the ceramic rock plate body obtained in step C is subjected to inkjet permeation decoration, then the inkjet decorated ceramic rock plate body is dried, and finally the dried inkjet decorated ceramic rock plate body is placed in a firing kiln and fired at a firing temperature of 1220℃ for 50 min to obtain the high-whiteness, silky, wear-resistant and antibacterial ecological functional ceramic rock plate of the present application, denoted as P1.

[0066] Preparation Example 2

[0067] A. Ceramic rock plate body green body preparation: the body raw materials are weighed according to the body formula, mixed, and then ball milled after adding water to obtain a slurry; the obtained slurry is sieved and de-ironed to remove coarse particles and iron-containing impurities; then the obtained slurry is spray dried, sieved and de-ironed, and then aged to obtain a body powder for ceramic rock plate; finally, the obtained body powder is pressed and formed and dried to obtain a ceramic rock plate body green body;

[0068] B. Ceramic composition slurry preparation: a. each raw material of the high-whiteness silky ecological ceramic composition is weighed according to Table 1; b. the raw materials weighed in step a are mixed uniformly, then water, sodium tripolyphosphate, sodium carboxymethyl cellulose, zinc oxide and rutile titanium dioxide are added in the amounts shown in Table 1, and then placed in a ball mill for ball milling until the processing fineness of the slurry is 0.75% on a 325 mesh sieve, then a red color aid is added and ground for 1.5-2.5 h until the processing fineness is 0.5% on a 325 mesh sieve and the specific gravity is 1.85 g / ml; c. the slurry obtained in step b is sieved through 80 mesh and 120 mesh vibrating screens to remove coarse particles, and then the slurry is placed in a high-frequency Gauss automatic magnetic separator for de-ironing to obtain a slurry from which coarse particles and iron-containing fine impurities have been removed; d. the slurry obtained in step c is mixed uniformly and aged for 48 h for standby use;

[0069] C. Ceramic rock plate body preparation: after adjusting the flow rate of the slurry obtained in step B to 45 s in the NK-2 rock field viscosity cup and the specific gravity to 1.80 g / ml, the slurry is sprayed on the ceramic rock plate body green body obtained in step A in the bell jar sprayer, and the spraying weight is 650 g / m 2The ceramic rock plate body green body prepared in step A is placed in a drying kiln for drying, wherein the temperature of the drying kiln is 150°C, the drying time is 90 min, and the water content of the ceramic rock plate body after drying is 0.3%. After drying, the ceramic rock plate body is obtained.

[0070] D. Inkjet decoration and firing: the ceramic rock plate body obtained in step C is subjected to inkjet permeation decoration, then the inkjet decorated ceramic rock plate body is dried, and finally the dried inkjet decorated ceramic rock plate body is placed in a firing kiln and fired at a firing temperature of 1200°C for 70 min to obtain the high-whiteness, silky, wear-resistant and antibacterial ecological functional ceramic rock plate of the present application, denoted as P2.

[0071] Preparation Example 3

[0072] A. Preparation of ceramic rock plate body green body: the body raw materials are weighed according to the body formula, mixed, and then ball milled after adding water to obtain a slurry. The obtained slurry is sieved and de-ironed to remove coarse particles and iron-containing impurities. Then the obtained slurry is spray dried, sieved and de-ironed, and then aged to obtain the body powder for ceramic rock plate. Finally, the obtained body powder is pressed and formed and dried to obtain the ceramic rock plate body green body.

[0073] B. Preparation of ceramic composition slurry: a. The raw materials of the high-whiteness, silky, ecological ceramic composition are weighed according to Table 1; b. The raw materials weighed in step a are mixed until uniform, then water, sodium tripolyphosphate, sodium carboxymethyl cellulose, zinc oxide and rutile titanium dioxide are added in the amounts shown in Table 1, and the mixture is placed in a ball mill for ball milling until the processing fineness of the slurry is 0.95% on a 325 mesh sieve. Then, the grinding aid is added and ground for 1.5-2.5 h to obtain a processing fineness of 0.7% on a 325 mesh sieve and a specific gravity of 1.82 g / ml; c. The slurry obtained in step b is sieved through 80 mesh and 120 mesh vibrating screens to remove coarse particles, and then the slurry is placed in a high-frequency Gauss automatic magnetic separator for de-ironing to obtain a slurry from which coarse particles and iron-containing fine impurities have been removed; d. The slurry obtained in step c is mixed uniformly and aged for 48 h for standby use.

[0074] C. Preparation of ceramic rock plate body green body: the slurry obtained in step B is adjusted to a flow rate of 40 s in an NK-2 rock viscosity cup and a specific gravity of 1.78 g / ml, and then the slurry is sprayed on the ceramic rock plate body green body obtained in step A in a bell jar sprayer at a spraying weight of 1185 g / m 2 The ceramic rock plate body green body prepared in step A is placed in a drying kiln for drying, wherein the temperature of the drying kiln is 150°C, the drying time is 90 min, and the water content of the ceramic rock plate body after drying is 0.3%. After drying, the ceramic rock plate body is obtained.

[0075] D. Inkjet decoration and firing: the ceramic rock plate body obtained in step C is subjected to inkjet permeation decoration, then the inkjet decorated ceramic rock plate body is dried, and finally the dried inkjet decorated ceramic rock plate body is placed into a firing kiln for firing at a firing temperature of 1203℃ for 65.3min, to obtain the high-whiteness, silk-look, wear-resistant and antibacterial ecological functional ceramic rock plate of the present application, denoted as P3.

[0076] Preparation Example 4

[0077] A. Preparation of ceramic rock plate body green body: the body raw materials are weighed according to the body formula, mixed, and then ball milled after adding water to obtain a slurry; the obtained slurry is sieved and de-ironed to remove coarse particles and iron-containing impurities; then the obtained slurry is spray dried, sieved and de-ironed, and then aged to obtain a body powder for ceramic rock plate; finally, the obtained body powder is pressed and formed and dried to obtain a ceramic rock plate body green body;

[0078] B. Preparation of ceramic composition slurry: a. each raw material of the high-whiteness, silk-look, ecological ceramic composition is weighed according to Table 1 below; b. the raw materials weighed in step a are mixed until uniform, then water, sodium tripolyphosphate, sodium carboxymethyl cellulose, zinc oxide and rutile titanium dioxide are added in the amounts shown in Table 1, and then placed in a ball mill for ball milling until the processing fineness of the slurry is 0.9% on a 325 mesh sieve, then a red color aid is added and ground for 1.5-2.5h until the processing fineness is 0.65% on a 325 mesh sieve and the specific gravity is 1.83g / ml; c. the slurry obtained in step b is sieved through 80 mesh and 150 mesh vibrating screens to remove coarse particles, and then the slurry is placed in a high-frequency Gauss automatic magnetic separator for de-ironing to obtain a slurry from which coarse particles and iron-containing fine impurities have been removed; d. the slurry obtained in step c is mixed uniformly and aged for 48h for standby use;

[0079] C. Preparation of ceramic rock plate body: the slurry obtained in step B is adjusted to a flow rate of 43s in an NK-2 rock viscosity cup and a specific gravity of 1.79g / ml, and then the slurry is sprayed on the ceramic rock plate body green body obtained in step A in a bell jar sprayer, with a spraying weight of 1500g / m 2 The ceramic rock plate body after spraying is placed in a drying kiln for drying, wherein the temperature of the drying kiln is 155℃ and the drying time is 85min, and the water content of the ceramic rock plate body after drying is 0.25%, and after drying, the ceramic rock plate body is obtained;

[0080] D. Inkjet decoration and firing: the ceramic rock plate body obtained in step C is subjected to inkjet permeation decoration, then the inkjet decorated ceramic rock plate body is dried, and finally the dried inkjet decorated ceramic rock plate body is placed into a firing kiln for firing at a firing temperature of 1205℃ for 60.1 min, to obtain the high-whiteness, silk-look, wear-resistant and antibacterial ecological functional ceramic rock plate of the present application, denoted as P4.

[0081] Preparation Example 5

[0082] A. Preparation of ceramic rock plate body green body: the body raw materials are weighed according to the body formula, mixed, and then ball milled after adding water to obtain a slurry; the obtained slurry is sieved and de-ironed to remove coarse particles and iron-containing impurities; then the obtained slurry is spray dried, sieved and de-ironed, and then aged to obtain a body powder for ceramic rock plate; finally, the obtained body powder is pressed and formed and dried to obtain a ceramic rock plate body green body;

[0083] B. Preparation of ceramic composition slurry: a. each raw material of the high-whiteness, silk-look, ecological ceramic composition is weighed according to Table 1 below; b. the raw materials weighed in step a are mixed until uniform, then water, sodium tripolyphosphate, sodium carboxymethyl cellulose, zinc oxide and rutile titanium dioxide are added in the amounts shown in Table 1, and then placed in a ball mill for ball milling until the processing fineness of the slurry is 0.85% on a 325 mesh sieve, then a red color aid is added and ground for 1.5-2.5 h until the processing fineness is 0.6% on a 325 mesh sieve and the specific gravity is 1.81 g / ml; c. the slurry obtained in step b is sieved through 80 mesh and 150 mesh vibrating screens to remove coarse particles, and then the slurry is placed in a high-frequency Gauss automatic magnetic separator for de-ironing to obtain a slurry from which coarse particles and iron-containing fine impurities have been removed; d. the slurry obtained in step c is mixed uniformly and aged for 48 h for standby use;

[0084] C. Preparation of ceramic rock plate body: the slurry obtained in step B is adjusted to a flow rate of 38 s in an NK-2 rock viscosity cup and a specific gravity of 1.76 g / ml, and then the slurry is sprayed on the ceramic rock plate body green body obtained in step A in a bell jar sprayer, with a spraying weight of 886 g / m 2 The ceramic rock plate body obtained after spraying is placed in a drying kiln for drying, wherein the temperature of the drying kiln is 175℃ and the drying time is 65 min, and the water content of the ceramic rock plate body after drying is 0.15%, and after drying, the ceramic rock plate body is obtained;

[0085] D. Inkjet decoration and firing: the ceramic rock plate body obtained in step C is subjected to inkjet permeation decoration, then the inkjet decorated ceramic rock plate body is dried, and finally the dried inkjet decorated ceramic rock plate body is placed into a firing kiln and fired at a firing temperature of 1207℃ for 55.9min, to obtain the high-whiteness, silk face, wear-resistant, and antibacterial ecological functional ceramic rock plate of the present application, denoted as P5.

[0086] Comparative Example

[0087] Comparative Example 1

[0088] The same as Preparation Example 5, except that the amount of ecological mineralizer is adjusted to 0 parts.

[0089] Comparative Example 2

[0090] The same as Preparation Example 5, except that the amount of ecological mineralizer is adjusted to 2 parts.

[0091] Comparative Example 3

[0092] The same as Preparation Example 5, except that the amount of ecological mineralizer is adjusted to 18 parts.

[0093] Comparative Example 4

[0094] The same as Preparation Example 5, except that the amount of tea crystal stone is adjusted to 0 parts, and ordinary potassium sodium feldspar is used to replace the tea crystal stone, and the amount of ordinary potassium sodium feldspar is adjusted to 35 parts.

[0095] Comparative Example 5

[0096] The same as Preparation Example 5, except that the amount of tea crystal stone is adjusted to 20 parts, and ordinary potassium sodium feldspar is used to partially replace the tea crystal stone, and the amount of ordinary potassium sodium feldspar is adjusted to 15 parts.

[0097] Comparative Example 6

[0098] The same as Preparation Example 5, except that the amount of tea crystal stone is adjusted to 45 parts.

[0099] Table 1 Raw material composition of high-whiteness, silk texture, and ecological type ceramic composition (parts by weight)

[0100]

[0101] Performance Test Example

[0102] Performance Test Example 1

[0103] The ceramic rock plates obtained in Preparation Examples 1-5 and Comparative Examples 1-6 are respectively subjected to the following performance tests according to the following standards, and the results are shown in Table 2 below.

[0104] Glossiness: select samples, cut into 100x100mm square shape, use WGG60-E4 glossiness tester according to GB / T 13891-2008 building facing materials mirror image glossiness determination method standard test, record the corresponding glossiness value.

[0105] Whiteness: select samples, cut into 100x100mm square shape, use SBDY-1 digital whiteness meter according to GB / T 5950-2008 building materials and non-metallic mineral products whiteness measurement method standard test, record the corresponding whiteness value.

[0106] Color difference value: select samples, cut into 100x100mm square shape, use CM-2300d spectrophotometer according to GB / T 3810.16-2016 ceramic tile test method part 16: determination of small color difference standard test, record the corresponding L, a, b value.

[0107] Mohs hardness: select samples, cut into 100x100mm square shape, use standard Mohs hardness mineral according to the method specified in JC / T 908-2013 artificial stone standard, record the corresponding Mohs hardness value.

[0108]

[0109] Wear resistance: select samples, cut into 100x100mm square shape, use wear resistance tester (GYM-8), according to GB / T 3810.7-2016 ceramic tile test method part 7: determination method of glazed tile surface wear resistance standard test, record the corresponding wear resistance grade.

[0110] Table 2 performance test results

[0111]

[0112]

[0113] The main data determining the product performance are gloss, whiteness (blank) and wear resistance. As can be seen from Table 2, the products P1-P5 prepared in Preparation Examples 1-5 have a product surface whiteness of 65 degrees or more, a gloss of 2-3 gloss units, and a wear resistance of 5 or more. Among them, the best group of gloss, whiteness (blank) and wear resistance is P5. The products C1-C6 prepared in Comparative Examples 1-6 according to the method of Preparation Example 5 have a whiteness of about 65, but C1 and C2 cannot form enough crystals due to insufficient addition of ecological mineralizers, and cannot achieve strong hiding power, resulting in high product surface gloss. C3 forms too many crystals due to the addition of too much ecological mineralizer, and the opalescent power is too strong, resulting in too low product surface gloss. In addition, although C4 and C5 have a product surface gloss of 2-3 gloss units when no or a small amount of tea crystal is added, the sintering degree is poor due to the relatively low K and Na content, and the wear resistance of the product is poor. Secondly, when C6 adds too much tea crystal, although the wear resistance of the product can reach 5 or more, the K and Na content is too high, resulting in too high product surface gloss. The above data objectively reflect that the ceramic composition of the present application significantly increases the whiteness and wear resistance of the high-whiteness, silk-screen, wear-resistant and antibacterial ecological functional ceramic rock plate surface. In particular, the ceramic rock plate product prepared in Preparation Example 5 has good silk-screen effect, high whiteness and wear resistance, and high cost performance.

[0114] Performance test example 2

[0115] The ceramic rock plates prepared in Preparation Examples 1-5 and Comparative Examples 1-6 were cut into 50x50mm squares, each 24 pieces, and tested according to the JC / T 897-2014 Antibacterial Ceramic Product Antibacterial Performance Standard, using Staphylococcus aureus and Escherichia coli as the two bacteria species for verification. The results are shown in Table 3 below.

[0116] Table 3 Antibacterial performance test

[0117] Staphylococcus aureus antibacterial rate (%) Escherichia coli antibacterial rate (%) P1 93.76 95.31 P2 96.21 96.36 P3 98.85 98.73 P4 >99.99 >99.99 P5 99.94 99.99 C1 99.87 99.80 C2 99.73 99.69 C3 99.91 99.89 C4 20.86 25.65 C5 80.14 82.52 C6 >99.99 >99.99

[0118] From the above detection results, the minimum amount of tea crystal stone P1 product and the maximum amount of tea crystal stone P4 product and P2, P3, P5, C1, C2 and C3 products between the minimum amount and the maximum amount of tea crystal stone have antibacterial effect on Staphylococcus aureus and Escherichia coli, and the antibacterial rate reaches more than 90%; from the antibacterial performance test results of C4 product without tea crystal stone or C5 product with less tea crystal stone, when the amount of tea crystal stone is too small, the amount of light active rubidium and rare earth elements is insufficient, and the antibacterial performance of the product is poor, in addition, from the antibacterial performance test results of C6 product with excessive tea crystal stone combined with Table 2 above, although the antibacterial rate reaches more than 90%, the product surface gloss is too high, and the requirements of silk light effect cannot be met. Fully illustrates the feasibility and obvious advantages of the ecological functionality of the ceramic rock plate of the application.

[0119] According to the disclosure and guidance of the above description, those skilled in the art of the present application can also make changes and modifications to the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and modifications and changes of the application should fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. A high whiteness, creped texture, eco-type ceramic composition, characterized in that, The raw materials include the following ingredients by weight: The tea crystal stone is a physically purified, stable composition, and a standardized functional ceramic raw material with rich trace elements; The ecological mineralizer is a natural silicate material rich in biologically active strontium element, and the fineness of the strontium-rich mineral after calcination processing is 200-300 mesh powder; In the preparation of the slurry of the high-whiteness, silky-feeling, ecological ceramic composition, a dispersant, a plasticizer, and a colorant are added before ball milling; the colorant is rutile titanium dioxide, nano-porous silicon dioxide, and ZnO with a mass fraction of 96%; the weight percentage of rutile titanium dioxide in the total weight of the ceramic composition slurry is 0.3-0.6%; the weight percentage of nano-porous silicon dioxide in the total weight of the ceramic composition slurry is 3-5%; and the weight percentage of ZnO with a mass fraction of 96% in the total weight of the ceramic composition slurry is 0.2-0.5%.

2. The high whiteness, silk feel, eco-type ceramic composition according to claim 1, characterized in that, The high-whiteness tubular hard clay has a chemical composition with an Al2O3 content of ≥38% by weight and an Fe2O3 content of ≤0.15% by weight, and a fired whiteness of 90 degrees or higher.

3. The high whiteness, silk feel, eco-type ceramic composition according to claim 1, characterized in that, The ultra-white washed ball clay has a chemical composition with an Al2O3 content of ≥33% by weight and an Fe2O3 content of ≤0.4% by weight, and a fired whiteness of 80 degrees or higher.

4. The high whiteness, silk feel, eco-type ceramic composition according to claim 1, characterized in that, The ultra-white α-Al2O3 is a stable crystal body with a fired whiteness of 95 degrees or higher.

5. The high whiteness, silk feel, eco-type ceramic composition according to claim 1, characterized in that, The ultra-white quartz sand has a chemical composition with an SiO2 content of ≥96% by weight, and a fired whiteness of 95 degrees or higher.

6. The high whiteness, silk feel, eco-type ceramic composition according to claim 1, characterized in that, The high-whiteness frit has a chemical composition with a BaO content of 4.3-4.9% by weight and a B2O3 content of 2.8-3.4% by weight.

7. The high whiteness, silk feel, eco-type ceramic composition according to claim 1, characterized in that The ecological mineralizer contains SrO with a content of ≥35% by weight and SiO2 with a content of 40-60% by weight.

8. The high whiteness, silk feel, eco-type ceramic composition according to claim 6, characterized in that, The raw materials include the following ingredients by weight:

9. The high whiteness, silk feel, eco-type ceramic composition according to claim 6, characterized in that, The raw materials include the following ingredients by weight:

10. Use of the high whiteness, creped feel, ecological ceramic composition according to any one of claims 1 to 9, characterized in that, The application is to prepare high-whiteness, silky, wear-resistant, and antibacterial ecological functional ceramic rock plates using the high-whiteness, silky-feeling, ecological ceramic composition; the process for preparing the high-whiteness, silky, wear-resistant, and antibacterial ecological functional ceramic rock plates includes the following steps: A. Preparation of ceramic rock plate green body: weigh the green body raw materials according to the green body formula, mix the green body raw materials, add water, and then ball mill to obtain a slurry; then sieve and remove iron from the obtained slurry to remove coarse particles and iron-containing impurities; then spray dry the obtained slurry, sieve and remove iron, and then age to obtain a green body powder for ceramic rock plates; finally, press and dry the obtained green body powder to obtain a ceramic rock plate green body; B. Preparation of ceramic composition slurry: a. High whiteness and silky texture ecological ceramic composition slurry batching: weigh the raw materials, specifically, tea crystal stone, high-whiteness tubular hard clay, super-white washed ball clay, super-white α-Al2O3, super-white quartz sand, high-whiteness fused block, and ecological mineralizer; b. Mix the above raw materials, then add water, appropriate amount of additives, and color aids, and perform ball milling to obtain a slurry, the processing fineness of the slurry is 0.5%-0.8% on a 325 mesh screen, and the specific gravity is 1.80-1.85 g / ml; c. Screen and remove iron from the slurry obtained in step b to remove coarse particles and iron-containing impurities; d. Mix the slurry obtained in step c uniformly, and let it stand, ready for use; C. Preparation of ceramic rock plate biscuit: After the slurry flow rate obtained in step B is adjusted to 35-45 s in the NK-2 rock field viscosity cup, the specific gravity is adjusted to 1.75-1.80 g / ml, the slurry is applied on the green body of the ceramic rock plate biscuit obtained in step A at a rate of 300-1500 g / m 2 After drying, the ceramic rock plate biscuit is obtained. D. Inkjet decoration and firing: perform inkjet permeation decoration on the ceramic rock plate body obtained in step C, and then fire it, to obtain a high-whiteness, silky surface, wear-resistant, and antibacterial ecological functional ceramic rock plate; In the preparation of the high-whiteness and silky texture ecological ceramic composition slurry, dispersants, plasticizers, and color aids are also added before ball milling; the color aids are rutile titanium dioxide, nano-porous silica, and zinc oxide with a mass fraction of ZnO≥96%; the weight of rutile titanium dioxide accounts for 0.3%-0.6% of the total weight of the ceramic composition slurry; the weight of nano-porous silica accounts for 3%-5% of the total weight of the ceramic composition slurry; and the weight of zinc oxide with a mass fraction of ZnO≥96% accounts for 0.2%-0.5% of the total weight of the ceramic composition slurry; In step C, the drying of the slurry-leached ceramic rock plate body is performed in a drying kiln, wherein the temperature of the drying kiln is 150-180℃, the drying time is 60-90 min, and the water content of the dried ceramic rock plate body is 0.1%-0.3%; In step D, the material used for inkjet is permeation ink and permeation aid, wherein the permeation ink reacts in situ with the high-whiteness and silky texture ecological ceramic composition containing color aids to form patterns; the permeation aid helps the permeation ink penetrate into the surface layer of the ceramic composition to form a three-dimensional pattern effect.

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