A high-strength high-entropy granite-like ceramic brick and its preparation method

Abstract

The present invention provides a high-strength high-entropy granite-like ceramic tile and a preparation method thereof. The chemical components of the ceramic body of the high-entropy granite-like ceramic tile, measured by weight percentage, include: SiO2 55%-60%, Al2O3 15%-20%, Fe2O3 5%-10%, TiO2 1%-5%, CaO 1%-5%, MgO 0.5%-2%, K2O 0.5%-5%, and Na2O 0.5%-2%. The embodiment of the application regulates the contents of Al2O3, CaO, and Fe2O3 based on a high-entropy model, and maintains the contents of SiO2 and Al2O3 within a specific range, thereby optimizing the phase composition of the granite ceramic tile, forming a high-entropy state, effectively improving the strength of the ceramic tile, and at a low cost.

Description

Technical Field

[0001] The present invention relates to the technical field of ceramic production, in particular to a high-strength high-entropy granite-like ceramic brick and a preparation method thereof. Background Art

[0002] As is well known, ceramics are brittle materials with lower strength than metals and are easily broken by applied stress. Therefore, obtaining high-strength ceramic materials to expand the application range of ceramics is a goal pursued in the ceramics field.

[0003] Currently, common methods for improving ceramic strength include density enhancement, toughening enhancement, reinforcing phase enhancement, and reinforcing layer enhancement. However, density enhancement has limited effectiveness in improving strength due to the limitations of the material itself. This method requires the use of nanopowders, large-tonnage presses, and high-temperature fire protection, resulting in high costs. Toughening enhancement requires the introduction of toughening agents and the control of microstructure and phase transition processes, which is complex and cannot meet large-scale demand. Reinforcing phase enhancement is generally a physical reinforcement method that requires the addition of a certain amount of inorganic fiber to the ceramic material, which increases production costs. Furthermore, the proportion of inorganic fiber added is limited, and the improvement effect is also limited. Therefore, the existing methods for strengthening ceramic tiles are limited in effectiveness and cost.

[0004] Therefore, the existing technology has defects and needs to be improved and developed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a high-strength high-entropy granite-like ceramic brick and a preparation method thereof in response to the above-mentioned defects of the prior art, aiming to solve the problem that the existing methods for improving the strength of ceramics have limited strengthening effects on ceramic tiles and are relatively costly.

[0006] The technical solutions adopted by the present invention to solve the technical problems are as follows:

[0007] In a first aspect, an embodiment of the present application provides a high-strength high-entropy granite-like ceramic tile, wherein the chemical components of the ceramic body of the high-entropy granite-like ceramic tile, calculated by weight percentage, include:

[0008] SiO2 55%-60%, Al2O3 15%-20%, Fe2O3 5%-10%, TiO2 1%-5%, CaO1%-5%, MgO 0.5%-2%, K2O 0.5%-5%, Na2O 0.5%-2%.

[0009] According to the above-mentioned technical means, the embodiment of the present application regulates the content of Al2O3, CaO, and Fe2O3 based on the high entropy model, and maintains the content of SiO2 and Al2O3 within a specific range, thereby optimizing the phase composition of granite ceramic tiles, forming a high entropy state, effectively improving the strength of the ceramic tiles, and at a lower cost.

[0010] In one embodiment of the present application, the entropy value of the high-entropy granite-like ceramic brick is within a preset high-entropy range, and the change in the entropy value is obtained by regulating the weight percentage of each chemical component of the ceramic body based on a high-entropy theoretical model.

[0011] According to the above-mentioned technical means, the embodiment of the present application is based on a quasi-high entropy model, and the entropy value is controlled by adjusting different formulas and application amounts to produce granite ceramic tiles with different strengths, so as to achieve the effect of controllable and adjustable product strength, thereby being suitable for different usage scenarios; at the same time, the use of low-temperature fast-firing technology achieves the purpose of reducing production costs while meeting the relevant physical performance requirements.

[0012] In one embodiment of the present application, the raw material formula of the ceramic body comprises, by weight percentage:

[0013] Qingzhen aluminum ore 12%-18%, shale 15%-25%, iron slag 25%-35%, Hunan mixed mud 20%-30%, vanadium-titanium slag 3%-12%, tailings mud 0%-7%.

[0014] According to the above-mentioned technical means, the embodiment of the present application uses industrial waste materials such as iron slag, vanadium-titanium slag, etc. as raw materials, and regulates the raw material formula and preparation process through a high-entropy theoretical model to obtain ultra-high strength high-entropy granite ceramic bricks, which can be quickly fired at low temperature, which is both energy-saving and environmentally friendly, and can reach three times the national standard modulus of rupture.

[0015] A second embodiment of the present application provides a method for preparing the high-strength high-entropy granite-like ceramic brick as described above, comprising:

[0016] By weight percentage, 12%-18% of Qingzhen aluminum ore, 15%-25% of shale, 25%-35% of iron-removing slag, 20%-30% of Hunan mixed mud, 3%-12% of vanadium-titanium slag, and 0%-7% of tailing mud are mixed to obtain a mixed raw material;

[0017] The mixed raw materials are processed to prepare high-entropy granite-like ceramic bricks.

[0018] According to the above technical means, the embodiment of the present application uses industrial waste materials such as iron slag, vanadium-titanium slag as raw materials, and controls the raw material formula and preparation process through a high-entropy theoretical model to obtain ultra-high strength high-entropy granite-like ceramic bricks, which can be quickly fired at low temperature.

[0019] In one embodiment of the present application, 12%-18% of Qingzhen aluminum ore, 15%-25% of shale, 25%-35% of iron slag, 20%-30% of Hunan mixed mud, 3%-12% of vanadium-titanium slag, and 0%-7% of tailing mud are mixed by weight to obtain the mixed raw material, and the following steps are further included:

[0020] Determining the weight percentage of each chemical component of the ceramic body based on a high entropy theoretical model so that the high entropy granite-like ceramic brick is in a high entropy state;

[0021] The raw material formula of the ceramic body is determined according to the weight percentage of each chemical component of the ceramic body.

[0022] According to the above technical means, the embodiments of the present application use a high entropy model to control the raw material ratio, particle size distribution, and optimize the phase composition of ceramic tiles to form a high entropy value. This series of adjustments will have a significant impact on the physical properties of ceramic tiles. After the above-mentioned adjustments, the fracture modulus of granite ceramic tiles has been greatly improved. This characteristic makes high-entropy ceramic tiles have better fracture resistance in practical applications, can withstand greater external forces without being easily damaged, and greatly improves their reliability and durability.

[0023] In one embodiment of the present application, 12%-18% of Qingzhen aluminum ore, 15%-25% of shale, 25%-35% of iron slag, 20%-30% of Hunan mixed mud, 3%-12% of vanadium-titanium slag, and 0%-7% of tailing mud are mixed by weight to obtain the mixed raw material, and the following steps are further included:

[0024] The Qingzhen aluminum ore is ground and sieved to obtain Qingzhen aluminum ore with a preset particle size range.

[0025] According to the above-mentioned technical means, the embodiment of the present application controls the particle size of the Qingzhen aluminum ore in the raw material by grinding, and makes the particle size distribution of the Qingzhen aluminum ore reach the optimized expectation, thereby increasing the uniformity of raw material mixing and forming a better grain size, so that the matching degree of the raw materials is increased, thereby achieving an increase in the entropy value of the ceramic tiles, and effectively improving the fracture modulus of the granite ceramic tiles.

[0026] In one embodiment of the present application, the mixed raw materials are processed to prepare high-entropy granite-like ceramic tiles, comprising:

[0027] adding water, a water reducing agent and a suspending agent to the mixed raw materials and then ball milling to obtain a green body slurry;

[0028] Deironing and spray drying the green body slurry to obtain green body powder;

[0029] Pressing the green body powder into a shape and drying it to obtain a dry green brick;

[0030] The dried bricks are glazed and pattern printed, and then fired to obtain high-entropy granite-like ceramic bricks.

[0031] According to the above technical means, the embodiments of the present application can refine the raw materials into tiny particles through ball milling, increase the contact area between the particles, and facilitate the reaction and combination in the subsequent process. At the same time, ball milling can also improve the uniformity and stability of the green body slurry. Deironing can remove iron impurities in the slurry to prevent iron impurities from affecting the color and transparency of the ceramic tiles during the firing process; by deironing, it can be ensured that the ceramic tiles have a uniform color and excellent decorative effect. By spray drying, the water in the slurry can be quickly evaporated to obtain a green body powder with fine particles and uniform distribution. The purpose of drying after pressing is to remove free water and adsorbed water in the bricks, increase the strength of the bricks, and prevent deformation or breakage in subsequent processes. At the same time, drying can also make the bricks heat up faster during the firing process, shorten the firing cycle, and reduce energy consumption. By glazing, the quality and decorative effect of ceramic tiles can be further improved; by advanced printing technology, various patterns and textures can be accurately printed on ceramic tiles to give them unique decorative effects.

[0032] In one embodiment of the present application, the weight of water added to the mixed raw materials accounts for 38%-42% of the total weight of the raw materials; the weight of the water reducer added to the mixed raw materials accounts for 0.25%-0.35% of the total weight of the raw materials, and the weight of the suspending agent added to the mixed raw materials accounts for 0.15%-0.20% of the total weight of the raw materials; the water reducer is sodium tripolyphosphate, and the suspending agent is sodium methylcellulose.

[0033] According to the above technical means, the embodiment of the present application adds specific proportions of water, sodium tripolyphosphate and sodium methyl cellulose to the mixed raw materials, which can significantly improve the mixing uniformity of the raw materials, optimize the mud performance, improve the production efficiency and improve the performance of the finished product, making the entire production process more efficient, stable and controllable, thereby ensuring the quality and performance of the final product.

[0034] In one embodiment of the present application, the moisture content of the green body powder is 5.0%-7.0% by weight; and the strength of the dried brick is 1.8-2.4 MPa.

[0035] According to the above technical means, the embodiment of the present application controls the moisture content within 5.0%-7.0%, making the green body powder easier to compress and shape during pressing, thereby obtaining bricks with regular shapes and precise dimensions. Too low a moisture content will cause the powder to be too dry and difficult to shape; while too high a moisture content will make the powder too viscous, affecting the molding effect. After pressing and molding, the green body powder with a moisture content within the range of 5.0%-7.0% has a tighter internal particle bond, which is conducive to forming a stronger binding force, making the dried bricks have higher strength and can withstand greater external forces without easily breaking. In addition, the appropriate moisture content can shorten the drying time, reduce energy consumption, and be less likely to cause problems such as cracks and deformation during the drying process, thereby improving the product yield. By controlling the strength of the dried bricks within 1.8-2.4MPa, their shape and dimensional stability can be better maintained during the subsequent firing process. The higher strength bricks can better maintain their integrity and aesthetics during subsequent processes such as glazing, pattern printing, and firing.

[0036] In one embodiment of the present application, the firing temperature of the high-entropy granite-like ceramic brick is 1185° C.-1195° C., and the firing time is 50-55 minutes.

[0037] According to the above technical means, after the embodiment of the present application is regulated by a high-entropy theory model, the sintering temperature is reduced from 1300°C to 1185°C-1195°C, and the firing time is shortened from 80-90min to 50-55min, achieving low-temperature fast firing, greatly reducing energy consumption, and still maintaining ultra-high strength.

[0038] Beneficial effects of this application:

[0039] (1) Based on the high entropy model, the contents of Al2O3, CaO, and Fe2O3 are regulated, and the contents of SiO2 and Al2O3 are maintained within a specific range, thereby optimizing the phase composition of granite ceramic tiles, forming a high entropy state, and effectively improving the strength of the ceramic tiles at a lower cost.

[0040] (2) Based on a high-entropy model, granite ceramic tiles with different strengths are produced by adjusting the entropy value through different formulas and application amounts, so that the product strength can be controlled and adjusted, making it suitable for different usage scenarios; at the same time, the use of low-temperature fast-firing technology can achieve the purpose of reducing production costs while meeting the relevant physical performance requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 The present invention is a flowchart of a preferred embodiment of a method for preparing a high-strength high-entropy granite-like ceramic tile.

[0042] Figure 2This is a specific flow chart of a method for preparing a high-strength high-entropy granite-like ceramic brick in the present invention. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the present invention more clear and distinct, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] An embodiment of the present application provides a high-strength high-entropy granite-like ceramic tile. The chemical components of the ceramic body of the high-entropy granite-like ceramic tile, calculated by weight percentage, include: SiO2 55%-60%, Al2O3 15%-20%, Fe2O35%-10%, TiO2 1%-5%, CaO 1%-5%, MgO 0.5%-2%, K2O 0.5%-5%, and Na2O 0.5%-2%.

[0045] The embodiment of the present application is regulated based on a high entropy model, that is, by regulating the raw material ratio, particle size distribution, and optimizing the phase composition of ceramic tiles, a high entropy value is formed, thereby improving the physical properties of ceramic tiles.

[0046] The embodiment of the present application regulates the contents of Al2O3, CaO, and Fe2O3 based on the high entropy model, and maintains the contents of SiO2 and Al2O3 within a specific range, thereby optimizing the phase composition of granite ceramic tiles, forming a high entropy state, effectively improving the strength of the ceramic tiles, and at a lower cost.

[0047] In the embodiment of the present application, the entropy value of the high-entropy granite-like ceramic brick is within a preset high-entropy range, and the change in the entropy value is obtained by regulating the weight percentage of each chemical component of the ceramic body based on a high-entropy theoretical model.

[0048] Specifically, the ceramic tiles of the embodiments of the present application are high-entropy-like ceramic tiles. High-entropy-like ceramic tiles are based on the concept of high entropy in materials, forming a high-entropy state in multiphase ceramic tiles to achieve the improvement of specific physical properties. The high-entropy theoretical model is a known model. Based on the high-entropy theoretical model, the raw material ratio, particle size distribution, and phase composition of ceramic tiles are regulated to form a high-entropy value, thereby improving the physical properties of ceramic tiles and increasing their modulus of rupture to three times the national standard. At the same time, the introduction of multiple types of phase structures effectively reduces the sintering temperature and time of granite ceramic tiles, effectively achieving the goal of reducing costs and increasing efficiency.

[0049] High-entropy ceramic materials have multiple special effects. Under the influence of the high-entropy effect, their structural heterogeneity will be greatly suppressed, manifesting as a single structural phase without the appearance of other structural phases. At the same time, the composition of high-entropy materials is complex, and the anions and cations of each component randomly occupy the lattice lattice, giving them a high mixing entropy and improving structural stability. In addition, the difference in atomic radius size (δ) of each component element also causes huge lattice distortion inside the crystal, causing each atom to deviate from its equilibrium position, increasing potential energy and free energy, thereby reducing the effective diffusion rate of atoms in the system. Finally, the interaction between the different components causes its performance to exhibit a composite effect, namely the "cocktail effect" in performance.

[0050]

[0051] Where R is the gas constant, N is the total number of elements, and x i is the atomic fraction of the i-th element. ΔS mix is the entropy of the ceramic mixture.

[0052] The physical properties of ceramic tiles can be manipulated by varying their entropy. Quasi-high-entropy ceramics possess a complex multiphase structure, and entropy is a key parameter for these tiles. By using phase composition as one of the control variables, changes in its composition can effectively alter the entropy of the material system, leading to significant improvements in various physical properties of the ceramic.

[0053] The embodiment of the present application is based on a quasi-high entropy model. By adjusting different formulas and application amounts, the entropy value is controlled to produce granite ceramic tiles with different strengths, so as to achieve the effect of controllable and adjustable product strength, thereby being suitable for different usage scenarios; at the same time, the use of low-temperature fast-firing technology achieves the purpose of reducing production costs while meeting the relevant physical performance requirements.

[0054] In the embodiment of the present application, the raw material formula of the ceramic body includes, by weight percentage, 12%-18% Qingzhen aluminum ore, 15%-25% shale, 25%-35% iron slag, 20%-30% Hunan mixed mud, 3%-12% vanadium-titanium slag, and 0%-7% tailing mud. Among them, some raw materials (such as Qingzhen aluminum ore) can increase the entropy value by adjusting the particle size, which can effectively improve the strength of the ceramic tile. In addition, the Hunan mixed mud can be selected from red gangue, and the tailing mud can be selected from squeezed mud.

[0055] The embodiment of the present application uses industrial waste materials such as iron slag and vanadium-titanium slag as raw materials, and regulates the raw material formula and preparation process through a high-entropy theoretical model to obtain ultra-high-strength high-entropy granite-like ceramic bricks, which can be fired quickly at low temperature, are energy-saving and environmentally friendly, and can achieve three times the national standard modulus of rupture.

[0056] The present application also provides a method for preparing the high-entropy granite-like ceramic brick with high strength as described above, such as Figure 1 As shown, the preparation method of the high-strength high-entropy granite-like ceramic brick includes:

[0057] Step S100, by weight percentage, 12%-18% of Qingzhen aluminum ore, 15%-25% of shale, 25%-35% of iron removal slag, 20%-30% of Hunan mixed mud, 3%-12% of vanadium-titanium slag, and 0%-7% of tailing mud are mixed to obtain a mixed raw material;

[0058] Step S200: Process the mixed raw materials to prepare high-entropy granite-like ceramic tiles.

[0059] Specifically, each mineral raw material for the blank is subjected to ball milling and pulverization treatment in advance, and the treated mineral raw materials for the blank are mixed according to a predetermined blank formulation to obtain a mixed raw material.

[0060] The embodiment of the present application uses industrial waste materials such as iron removal slag, vanadium-titanium slag, etc. as raw materials, and controls the raw material formula and preparation process through a high-entropy theoretical model to obtain ultra-high-strength high-entropy granite-like ceramic bricks that can be quickly fired at low temperature.

[0061] In the embodiment of the present application, before step S100, the following steps are further included:

[0062] Determining the weight percentage of each chemical component of the ceramic body based on a high entropy theoretical model so that the high entropy granite-like ceramic brick is in a high entropy state;

[0063] The raw material formula of the ceramic body is determined according to the weight percentage of each chemical component of the ceramic body.

[0064] The embodiments of this application use a high-entropy model to control the raw material ratio, particle size distribution, and optimize the physical composition of ceramic tiles to form a high-entropy value. This series of adjustments will have a significant impact on the physical properties of ceramic tiles. Specifically, after the above-mentioned adjustments, the modulus of rupture of granite ceramic tiles has been greatly improved. This characteristic makes high-entropy ceramic tiles have better fracture resistance in practical applications, can withstand greater external forces without being easily damaged, and greatly improves their reliability and durability.

[0065] In the embodiment of the present application, before step S100, the process further includes: grinding and screening the Qingzhen aluminum ore to obtain Qingzhen aluminum ore within a preset particle size range.

[0066] Specifically, the Qingzhen aluminum ore in the raw materials is ground and screened to control the particle size, optimize the particle size distribution of the Qingzhen aluminum ore, increase the uniformity of raw material mixing and form a better grain size, achieve an increase in entropy value, and thus improve the fracture modulus of granite ceramic tiles.

[0067] The embodiment of the present application controls the particle size of the Qingzhen aluminum ore in the raw material by grinding, and optimizes the particle size distribution of the Qingzhen aluminum ore to meet expectations, thereby increasing the uniformity of raw material mixing and forming a better grain size, thereby increasing the matching degree of the raw materials, thereby achieving an increase in the entropy value of the ceramic tiles, and effectively improving the fracture modulus of the granite ceramic tiles.

[0068] In one embodiment of the present application, step S200 specifically includes:

[0069] adding water, a water reducing agent and a suspending agent to the mixed raw materials and then ball milling to obtain a green body slurry;

[0070] Deironing and spray drying the green body slurry to obtain green body powder;

[0071] Pressing the green body powder into a shape and drying it to obtain a dry green brick;

[0072] The dried bricks are glazed and pattern printed, and then fired to obtain high-entropy granite-like ceramic bricks.

[0073] Specifically, adding water to the mixed raw materials can promote the reaction and mixing between the raw materials, so that the raw materials can form a uniform slurry. The water reducer can reduce the amount of water used in the slurry while maintaining the good fluidity of the slurry, reducing production costs, improving the stability and quality of the slurry, and making the slurry easier to process and operate. Specifically, the water reducer can reduce the viscosity of the slurry and improve its fluidity, thereby meeting the requirements of spraying or filling and leveling. In addition, the water reducer can also reduce the water content of the slurry, prevent the green body from shrinking, deforming and cracking during the drying process, and reduce the breakage rate of the green body. At the same time, the water reducer has a lubricating and grinding-aiding effect on the slurry particles, which can shorten the ball milling time, improve work efficiency, and save energy. The suspending agent helps to maintain the uniform suspension state of the raw material particles in the slurry, prevents the particles from settling and agglomerating, thereby ensuring that the green body slurry obtained after ball milling has a uniform particle distribution and good fluidity.

[0074] In the embodiments of the present application, ball milling can be used to refine the raw materials into tiny particles, increase the contact area between the particles, and facilitate reactions and bonding in subsequent processes. At the same time, ball milling can also improve the uniformity and stability of the green body slurry. Deironing can remove iron impurities in the slurry to prevent iron impurities from affecting the color and transparency of the ceramic tiles during the firing process; by deironing, the ceramic tiles can be ensured to have a uniform color and excellent decorative effect. By spray drying, the water in the slurry can be quickly evaporated to obtain a green body powder with fine particles and uniform distribution. The purpose of drying after pressing is to remove free water and adsorbed water in the bricks, increase the strength of the bricks, and prevent deformation or breakage in subsequent processes. At the same time, drying can also make the bricks heat up faster during the firing process, shorten the firing cycle, and reduce energy consumption. By glazing, the quality and decorative effect of ceramic tiles can be further improved; by advanced printing technology, various patterns and textures can be accurately printed on ceramic tiles to give them unique decorative effects.

[0075] In an embodiment of the present application, the weight of water added to the mixed raw materials accounts for 38%-42% of the total weight of the raw materials; the weight of the water reducer added to the mixed raw materials accounts for 0.25%-0.35% of the total weight of the raw materials, and the weight of the suspending agent added to the mixed raw materials accounts for 0.15%-0.20% of the total weight of the raw materials; the water reducer is sodium tripolyphosphate, and the suspending agent is sodium methylcellulose.

[0076] Specifically, 42% of water, 0.35% of sodium tripolyphosphate and 0.15% of sodium methylcellulose were added and ball-milled to obtain a green body slurry with a water content of 36.5%.

[0077] In the embodiment of the present application, adding specific proportions of water, sodium tripolyphosphate and sodium methylcellulose to the mixed raw materials can significantly improve the mixing uniformity of the raw materials, optimize the mud performance, improve the production efficiency and improve the performance of the finished product, making the entire production process more efficient, stable and controllable, thereby ensuring the quality and performance of the final product.

[0078] In the embodiment of the present application, the moisture content of the green body powder is 5.0%-7.0% by weight; the strength of the dried brick is 1.8-2.4 MPa.

[0079] Specifically, the green body slurry is deironed using a deironing device and spray-dried to obtain green body powder with a moisture content of 6.5% by weight. The green body powder is pressed into bricks of desired specifications by a press and dried to obtain dried bricks.

[0080] In the embodiments of the present application, the moisture content is controlled within a range of 5.0%-7.0%, making the green powder easier to compress and shape during press molding, thereby producing bricks with regular shapes and precise dimensions. A moisture content that is too low will cause the powder to be too dry and difficult to mold, while a moisture content that is too high will make the powder too viscous, affecting the molding effect. After press molding, green powder with a moisture content within the range of 5.0%-7.0% has a tighter internal particle bond, which is conducive to forming a stronger bond. This gives the dried bricks higher strength and the ability to withstand greater external forces without breaking. Furthermore, an appropriate moisture content can shorten drying time, reduce energy consumption, and be less prone to problems such as cracking and deformation during the drying process, thereby improving the product yield. Controlling the strength of the dried bricks within a range of 1.8-2.4 MPa allows them to better maintain their shape and dimensional stability during the subsequent firing process. The higher-strength bricks can better maintain their integrity and aesthetics during subsequent processes such as glazing, pattern printing, and firing.

[0081] In the embodiment of the present application, the firing temperature of the high-entropy granite-like ceramic brick is 1185°C-1195°C, and the firing time is 50-55 minutes.

[0082] After the embodiment of the present application is regulated by a high-entropy theory model, the sintering temperature is reduced from 1300°C to 1185°C-1195°C, and the firing time is shortened from 80-90min to 50-55min, achieving low-temperature fast firing, greatly reducing energy consumption, and still maintaining ultra-high strength.

[0083] Specifically, the introduction of various phase structures into ceramic tiles has led to favorable changes in the sintering process, significantly reducing the sintering temperature and time. Lower sintering temperatures mean less energy is needed during production, while shorter sintering times make the production process more efficient. These two improvements combined achieve optimization goals, and by reducing energy consumption and increasing production efficiency during production, costs are reduced and efficiency is increased, thereby gaining a more advantageous position in market competition.

[0084] In one embodiment, the density of the high-entropy granite-like ceramic brick is as shown in Table 1.

[0085] Table 1

[0086]

[0087]

[0088] The above test results demonstrate that, based on quasi-high entropy theory, the density of granite ceramic tiles after firing increases after adjusting the raw material ratio. This phenomenon indicates that the porosity within the tile decreases to a certain extent, and the bond between the internal crystalline phase and the body becomes tighter. In the case of Formulation 3, the density of the granite ceramic tile reaches its maximum value, and this maximum density is conducive to maximizing its modulus of rupture.

[0089] The rupture modulus corresponding to different formulations is shown in Table 2.

[0090] Table 2

[0091]

[0092] The high modulus of rupture granite ceramic tiles prepared in this embodiment are based on a quasi-high entropy theory. By regulating the raw material ratio and phase composition to form a high entropy state, a modulus of rupture of 105.6 MPa can be achieved. Therefore, this embodiment produces a high modulus of rupture granite ceramic tile.

[0093] In one embodiment, Figure 2 As shown, the formula composition is controlled according to a high-entropy theoretical model; raw materials are selected and mixed in appropriate proportions; some raw materials are pre-ball-milled. The mixed raw materials are then ground; the ground materials are screened, iron removed, and spray-dried; pressed into shape to obtain a green brick; and the green brick is dried. The brick is then quickly fired in a kiln at low temperature (1185°C-1195°C, 50-55 minutes); and polished and sorted to obtain the finished product.

[0094] The embodiment of the present application optimizes the raw material ratio according to a high entropy theory model, and effectively regulates the internal phase composition of the granite ceramic tile. This regulation of the phase composition is the key to obtaining high modulus of rupture characteristics. During the production process, the increase or decrease of each raw material affects the internal microstructure of the final granite ceramic tile. When the raw material ratio reaches the ideal state, the internal phase composition of the ceramic tile is optimized, so that the various phases cooperate with each other to form a stable and efficient high entropy structure. Ultimately, the ceramic products produced in this way can reach a modulus of rupture of 105.6MPa. This modulus of rupture indicates that the granite ceramic tile has excellent resistance to fracture when subjected to external force and can maintain structural integrity under relatively harsh use environments. The high modulus of rupture granite ceramic tiles prepared in the embodiment of the present application have broad application prospects in many fields, whether in architectural decoration, industrial production, or in some special fields with high requirements for material strength, they can play an important role. The comparison of modulus of rupture and breaking strength of different product performances is shown in Table 3.

[0095] Table 3

[0096]

[0097] The present invention provides a high-strength high-entropy granite-like ceramic tile and a preparation method thereof. The chemical components of the ceramic body of the high-entropy granite-like ceramic tile, measured by weight, include: SiO2 55%-60%, Al2O3 15%-20%, Fe2O3 5%-10%, TiO2 1%-5%, CaO 1%-5%, MgO 0.5%-2%, K2O 0.5%-5%, and Na2O 0.5%-2%. The embodiment of the application regulates the contents of Al2O3, CaO, and Fe2O3 based on a high-entropy model, and maintains the contents of SiO2 and Al2O3 within a specific range, thereby optimizing the phase composition of the granite ceramic tile, forming a high-entropy state, effectively improving the strength of the ceramic tile, and at a low cost.

[0098] It should be understood that the application of the present invention is not limited to the above examples. For those skilled in the art, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A method for preparing high-strength high-entropy granite-like ceramic bricks, characterized in that: include: Determining the weight percentage of each chemical component of the ceramic body based on a high entropy theoretical model so that the high entropy granite-like ceramic brick is in a high entropy state; Determining a raw material formula for the ceramic body according to the weight percentage of each chemical component of the ceramic body; Grinding and screening the Qingzhen aluminum ore to obtain Qingzhen aluminum ore within a preset particle size range; By weight percentage, 12%-18% of Qingzhen aluminum ore, 15%-25% of shale, 25%-35% of iron slag, 20%-30% of Hunan mixed mud, 3%-12% of vanadium-titanium slag, and 0%-7% of tailing mud are mixed to obtain a mixed raw material; adding water, a water reducing agent and a suspending agent to the mixed raw materials and then ball milling to obtain a green body slurry; Deironing and spray drying the green body slurry to obtain green body powder; Pressing the green body powder into a shape and drying it to obtain a dry green brick; After glazing and printing a pattern on the dried brick, the brick is fired to obtain a high-entropy granite-like ceramic brick; The moisture content of the green body powder is 5.0%-7.0% by weight; the strength of the dried brick is 1.8-2.4 MPa; The firing temperature of the high-entropy granite-like ceramic brick is 1185°C-1195°C, and the firing time is 50-55 minutes; The ceramic body of the high-entropy granite-like ceramic tile is composed of the following chemical components by weight percentage: SiO2 55%-60%, Al2O3 15%-20%, Fe2O3 5%-10%, TiO2 1%-5%, CaO 1%-5%, MgO 0.5%-2%, K2O 0.5%-5%, Na2O 0.5%-2%; The entropy value of the high-entropy granite-like ceramic brick is within a preset high-entropy range, and the change in the entropy value is obtained by regulating the weight percentage of each chemical component of the ceramic body based on a high-entropy theoretical model; The Hunan mixed mud is selected as red gangue, and the tail mud is selected as pulping mud.

2. The method for preparing high-strength high-entropy granite-like ceramic tiles according to claim 1, characterized in that: The weight of water added to the mixed raw materials accounts for 38%-42% of the total weight of the raw materials; the weight of the water reducer added to the mixed raw materials accounts for 0.25%-0.35% of the total weight of the raw materials; the weight of the suspending agent added to the mixed raw materials accounts for 0.15%-0.20% of the total weight of the raw materials; the water reducer is sodium tripolyphosphate, and the suspending agent is sodium methylcellulose.

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