A method for manufacturing architectural ceramics from a full lean mass and architectural ceramics

Abstract

The application provides a method for preparing building ceramics by using full barren material and the building ceramics, and the method comprises the following steps: mixing green mineral raw materials according to a predetermined green body formula to obtain mixed raw materials, wherein the green mineral raw materials are full barren materials; after wet ball milling, the mixed raw materials are treated to obtain a green material mud group; after adding aluminum dihydrogen phosphate solution into the green material mud group, the green material mud group is extruded to obtain a mud material, and the mud material is sent into a roller press to prepare a ceramic green body; and the ceramic green body is treated to obtain the building ceramics. By using the full barren material as the ceramic raw material, the clay is not needed, the strength of the ceramic green body is improved by adding the aluminum dihydrogen phosphate solution, the extrusion molding and the roller press treatment are used to obtain the molded ceramic green body, and the problems that the strength of the ceramic green body is reduced and the ceramic green body is difficult to be molded due to the reduction of the amount of clay are solved.

Description

Technical Field

[0001] This invention relates to the field of ceramic technology, and more particularly to a method for preparing building ceramics from completely barren materials, and the building ceramics themselves. Background Technology

[0002] In recent years, the building ceramics industry has achieved significant development. However, as a resource- and energy-intensive industry, raw material inputs and energy costs account for approximately 70% of total production costs. This resource- and energy-intensive industry faces dual pressures from environmental concerns and the need for resource conservation.

[0003] With the expansion of the architectural ceramics industry, the reliance on clay has increased significantly, especially with the rise of sintered stone in recent years. This has led to a trend towards lighter ceramic products, resulting in thinner and more resilient pieces. Because sintered stone is relatively thin, the performance requirements for clay raw materials in the body formulation are higher, needing to achieve the corresponding green strength on a thinner body. However, due to the industry's long-term development and increased production, clay prices have become increasingly expensive, and clay resources are becoming increasingly scarce. Therefore, ceramic companies are forced to find ways to reduce the amount of clay used in their body formulations.

[0004] The clay content determines the strength of ceramic green bodies and forms the basis for a series of processes during production. The plasticity of clay is fundamental to the shaping of ceramic green bodies, and variations in clay plasticity significantly impact the quality of the formed ceramic. Clay imparts good suspension and stability to clay and glaze materials, essential properties for both. Clay is generally in the form of finely dispersed particles and possesses good binding properties, allowing it to combine with other lean materials in the green body and giving it a certain drying strength, which is beneficial for shaping and processing. Furthermore, the combination of dispersed clay particles with coarser lean materials results in a higher bulk density, which is conducive to sintering. Therefore, reducing the amount of clay used leads to a decrease in the strength of the ceramic green body and makes it difficult to shape.

[0005] Therefore, existing technologies have shortcomings and need to be improved and developed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a method for preparing building ceramics and building ceramics using all-lean materials, in order to address the above-mentioned defects of the prior art. The aim is to solve the problems in the prior art where reducing the amount of clay leads to a decrease in the strength of the ceramic green body and difficulty in forming the ceramic body.

[0007] The technical solution adopted by this invention to solve the technical problem is as follows:

[0008] The first aspect of this application provides a method for preparing building ceramics from completely lean materials, the method comprising:

[0009] The raw materials for billet are mixed according to the predetermined billet formula to obtain mixed raw materials, wherein the raw materials for billet are completely lean materials;

[0010] The mixed raw materials are subjected to wet ball milling and then processed to obtain a blank mud ball;

[0011] Aluminum dihydrogen phosphate solution is added to the blank clay and then extruded to obtain clay material. The clay material is then fed into a roller press to prepare a ceramic blank.

[0012] The ceramic blank is processed to obtain architectural ceramics.

[0013] Based on the above technical means, the embodiments of this application use completely barren material as ceramic raw material, eliminating the need for clay, and improve the strength of ceramic green bodies by adding aluminum dihydrogen phosphate solution. Through extrusion molding and roller pressing, a shaped ceramic green body is obtained, solving the problem that reducing the amount of clay will lead to a decrease in the strength of the ceramic green body and difficulty in shaping the ceramic green body.

[0014] In one implementation, the mineral raw materials for the billet, by weight, include:

[0015] Sodium sand 20-30 parts, water-polished sand 40-65 parts, potassium aluminum sand 20-45 parts, aluminum sand 0-10 parts, black talc 0-3 parts, wollastonite 1-5 parts.

[0016] Based on the above-mentioned technical means, the embodiments of this application completely replace the use of clay by using high-temperature aluminum sand, potassium aluminum sand, water-polished sand, low-temperature sodium sand, black talc, wollastonite and other blanking mineral raw materials, thereby saving clay resources and reducing production costs.

[0017] In one implementation, the chemical composition of the preform formulation, by mass percentage, includes:

[0018] SiO2 64~72%, Al2O3 16~20%, CaO+MgO 1~4%, K2O+Na2O 7~12%, Fe2O3 0~1%, TiO2 0~1%.

[0019] Based on the above technical means, the embodiments of this application ensure the strength of the ceramic green body by the mass percentage of each chemical component in the green body formula.

[0020] In one implementation, the mixed raw materials are wet-ball-milled and then processed to obtain a blank mud, comprising:

[0021] Water is added to the mixed raw materials, and water glass and tripolyphosphate are added as water-reducing agents before the mixture is fed into a ball mill.

[0022] The mixed raw materials are ball-milled in a ball mill to obtain a slurry, which is then aged.

[0023] The aged mud is pressed to obtain raw mud balls.

[0024] In one implementation, aluminum dihydrogen phosphate solution is added to the blank clay and then extruded to obtain clay material. The clay material is then fed into a roller press to prepare a ceramic green body, comprising:

[0025] Add 5-10% aluminum dihydrogen phosphate solution to the blank clay;

[0026] Under a vacuum of 0.1 MPa in a vacuum pug mill, the billet mud lumps after adding aluminum dihydrogen phosphate solution are pug milled and extruded from the extrusion port of the vacuum pug mill to obtain mud material.

[0027] The clay material is fed into a roller press and cut by the roller press to obtain a ceramic blank.

[0028] Based on the above technical means, the embodiments of this application achieve or exceed the green strength of existing clay materials by adding different contents of aluminum dihydrogen phosphate solution to the completely barren raw material formula; ceramic green bodies of different thicknesses are prepared by roller press; and green products can be prepared into any desired size by extrusion molding in conjunction with roller press without frequent replacement of press and mold.

[0029] Furthermore, by employing a wet molding process, this embodiment reduces the investment in heavy equipment such as spray drying towers and presses from the perspective of process control, thereby lowering production costs.

[0030] In one implementation, the method for preparing building ceramics from the completely lean material further includes:

[0031] The raw materials for the glaze are mixed according to the predetermined glaze formula, and then ball-milled, sieved, iron-removed, and aged to obtain the glaze slurry.

[0032] The raw materials for the glaze, by weight percentage, include:

[0033] Kaolin 6-10%, potassium feldspar 6-12%, sodium feldspar 8-18%, quartz 3-7%, barium carbonate 5-10%, zirconium silicate 8-16%, talc 3-7%, dolomite 3-5%, calcined zinc oxide 1.5-4%, frit 10-23%.

[0034] Based on the above-mentioned technical means, the glaze formula of this application uses high-calcium and high-barium raw materials, which is beneficial to reduce the glaze temperature, increase the bonding performance between the body and the glaze, ensure that the shrinkage phases of the body and the glaze are similar, and will not cause large defects; in addition, after high-temperature reaction, calcium feldspar and barium feldspar are generated, which improves the strength and density of the product.

[0035] In one implementation, the chemical composition of the glaze formulation, by mass percentage, includes:

[0036] SiO2 42~49%, Al2O3 10~14%, CaO 4~6%, MgO 1~3%, K2O+Na2O2~4%, ZnO 2~6%, BaO 6~11%, ZrO2 8~13%, TiO2 0~1%, Fe2O3 0~1%, B2O3 0~2%.

[0037] Based on the above-mentioned technical means, the embodiments of this application ensure the quality of the glaze by the mass percentage of each chemical component in the glaze formula.

[0038] In one implementation, the ceramic blank is processed to obtain architectural ceramics, including:

[0039] The ceramic blank is sent into a microwave drying oven for rapid drying, and the rapidly dried ceramic blank is sent into a drying kiln for further drying to obtain a dried ceramic blank.

[0040] The glaze is applied to the dried ceramic body, and after printing decoration and applying a base coat of slurry, it is fired in a kiln to obtain architectural ceramics.

[0041] Based on the above technical means, the embodiments of this application use a microwave drying oven for rapid drying. Microwave drying has a high energy utilization rate, uniform drying, and fast drying rate. Moreover, the heat conduction direction is the same as the moisture diffusion direction, which makes it less likely for the product to crack, thus improving the quality of building ceramics.

[0042] In one implementation, the glaze slurry has a specific gravity of 1.65–0.70, a fineness of 0.3–0.5 on a 325-mesh sieve, and an application rate of 450–500 g / m³. 2 The brick base slurry is magnesium oxide slurry; the firing conditions for firing in the kiln include a firing temperature of 1100-1145℃, a firing cycle of 38-42 minutes, and an oxidizing atmosphere.

[0043] Based on the above-mentioned technical means, the firing temperature of the embodiments of this application is relatively low, which is beneficial to the sintering of building ceramics.

[0044] A second aspect of this application provides a building ceramic, which is prepared by the method for preparing building ceramics from completely barren materials as described above.

[0045] This invention discloses a method for preparing building ceramics using entirely lean materials and the resulting building ceramics. The method includes: mixing raw mineral materials for the green body according to a predetermined formula to obtain a mixed raw material, wherein the raw mineral materials for the green body are entirely lean materials; wet ball milling the mixed raw material and then processing it to obtain a green body clay; adding aluminum dihydrogen phosphate solution to the green body clay and then extruding it to obtain a clay material; feeding the clay material into a roller press to prepare a ceramic green body; and processing the ceramic green body to obtain building ceramics. This invention uses entirely lean materials as ceramic raw materials, eliminating the need for clay, and by adding aluminum dihydrogen phosphate solution to improve the strength of the ceramic green body. Through extrusion molding and roller press processing, a shaped ceramic green body is obtained, solving the problem that reducing the amount of clay will lead to a decrease in the strength of the ceramic green body and difficulty in shaping the ceramic green body. Attached Figure Description

[0046] Figure 1 This is a flowchart of a preferred embodiment of the method for preparing building ceramics from completely barren materials in this invention.

[0047] Figure 2 This is a detailed flowchart of a preferred embodiment of the method for preparing building ceramics from completely barren materials in this invention. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0049] Due to the long-term development of the industry and the expansion of production, clay has become increasingly expensive and clay resources have become increasingly scarce. As a result, the cost margin for the ceramic industry is shrinking. There is an urgent need to provide a new approach and method for the development of the building ceramics industry to reduce the dependence of building ceramics on clay, achieve molding of lean raw materials with relative strength, and ensure smooth production.

[0050] This invention provides a method for preparing building ceramics from completely barren materials, such as... Figure 1 As shown, the method for preparing building ceramics from the completely barren material includes:

[0051] Step S100: Mix the raw materials for billet according to the predetermined billet formula to obtain mixed raw materials, wherein the raw materials for billet are all lean materials.

[0052] Specifically, using completely barren materials to prepare ceramic wall and floor tiles can reduce the dependence of building ceramics on clay.

[0053] In the embodiments of this application, the mineral raw materials for the billet, by weight, include: 20-30 parts of sodium sand, 40-65 parts of water-polished sand, 20-45 parts of potassium aluminum sand, 0-10 parts of aluminum sand, 0-3 parts of black talc, and 1-5 parts of wollastonite.

[0054] Specifically, the mineral raw materials used for billets in this application embodiment refer to high-temperature alumina sand, potassium alumina sand, water-polished sand, low-temperature sodium sand, black talc, wollastonite, etc., which are completely barren materials that completely replace the use of clay, saving clay resources and reducing production costs. The stone powder is pre-crushed before ball milling to ensure that the fineness of the stone powder after ball milling is within a suitable range, thereby improving ball milling efficiency.

[0055] In the embodiments of this application, the chemical composition of the green body formula, by mass percentage, includes: SiO2 64-72%, Al2O3 16-20%, CaO+MgO 1-4%, K2O+Na2O 7-12%, Fe2O3 0-1%, and TiO2 0-1%.

[0056] Specifically, the chemical composition of the green body formulation, by mass percentage, includes: SiO2 68.31%, Al2O3 18.26%, CaO+MgO 1.80%, K2O+Na2O 10.73%, Fe2O3 0.13%, TiO2 0.11%, and loss on ignition 0.66%. The embodiments of this application ensure the strength of the ceramic green body by using the mass percentage of each chemical component in the green body formulation.

[0057] like Figure 1 As shown, the method for preparing building ceramics from entirely lean materials further includes:

[0058] Step S200: After wet ball milling the mixed raw materials, the raw material is processed to obtain a blank mud ball.

[0059] Specifically, the raw mineral materials for the blank are mixed and then ball-milled, aged, and pressed to prepare mud balls for later use.

[0060] In this embodiment of the application, step S200 specifically includes:

[0061] Step S210: Add water to the mixed raw materials, and add water glass and tripolyphosphate as water reducing agents, and then send it into a ball mill;

[0062] Step S220: The mixed raw materials are ball-milled in a ball mill to obtain a slurry, which is then aged.

[0063] Step S230: Press the aged mud to obtain raw mud balls.

[0064] Specifically, during the raw material ball milling process, an appropriate amount of water is added according to the billet formula, along with 0.3–0.5% water glass and sodium tripolyphosphate as water-reducing agents. The mixture is then fed into a ball mill and milled into a slurry with a fineness of 0.6–1.5% residue on a 325-mesh sieve. After aging for 24 hours, the slurry is pressed for later use. The moisture content of the slurry after pressing is 19–24%.

[0065] like Figure 1 As shown, the method for preparing building ceramics from entirely lean materials further includes:

[0066] Step S300: Add aluminum dihydrogen phosphate solution to the blank clay and extrude it to obtain clay material. Then, send the clay material into a roller press to prepare a ceramic blank.

[0067] This application embodiment achieves or exceeds the green strength of existing clay materials by adding different amounts of aluminum dihydrogen phosphate solution to a completely barren raw material formulation.

[0068] In this embodiment of the application, step S300 specifically includes:

[0069] Step S310: Add 5-10% aluminum dihydrogen phosphate solution to the blank clay;

[0070] Step S320: Under the condition of vacuum degree of 0.1MPa in the vacuum pug mill, the billet mud after adding aluminum dihydrogen phosphate solution is pug milled and extruded from the extrusion port of the vacuum pug mill to obtain mud material.

[0071] Step S330: The clay material is fed into a roller press and cut by the roller press to obtain a ceramic blank.

[0072] In this embodiment, the prepared clay blank is fed into a vacuum clay kneading machine, and the kneaded clay is conveyed to a roller press via a flat belt. The roller press is used to prepare ceramic blanks of different thicknesses.

[0073] Specifically, before the clay blanks are fed into the mixing machine, 5-10% aluminum dihydrogen phosphate solution is added to facilitate uniform mixing during the mixing process. When 5% aluminum dihydrogen phosphate solution is added, the dried strength of the green body is 2.97 MPa; when 10% aluminum dihydrogen phosphate solution is added, the dried strength is 6.51 MPa. By adding reinforcing agents and varying the amounts added, ceramic green bodies of different strengths can be obtained, potentially eliminating the need for clay in architectural ceramic products altogether.

[0074] The raw clay lumps are kneaded three times in a vacuum kneader under a vacuum of 0.1 MPa to ensure uniform mixing of the raw clay lumps and aluminum dihydrogen phosphate. The vacuum kneader has two cylindrical discharge ports and one flat extrusion port. The extruded clay has a size of 200 mm × 15 mm and an unlimited length.

[0075] The lower roller of the roller press acts as a mold, creating a mold-like effect on the bottom of the blank as the clay slab passes through. After being cut by the roller press, the blank size is 340mm × 340mm, with a thickness of 10mm.

[0076] This application embodiment utilizes extrusion molding in conjunction with a roller press to prepare green products into any desired size without frequent press and mold changes. Furthermore, by using the lower roller mold of the roller press, different textures can be created on the back of the ceramic tile, solving problems such as easy tile detachment during installation.

[0077] Furthermore, by employing a wet molding process, this embodiment reduces the investment in heavy equipment such as spray drying towers and presses from the perspective of process control, thereby lowering production costs.

[0078] In this embodiment of the application, the method for preparing architectural ceramics from all-lean materials further includes: mixing the glaze raw materials according to a predetermined glaze formula, and subjecting them to ball milling, sieving, iron removal, and aging treatment to obtain a glaze slurry. The glaze raw materials, by mass percentage, include: 6-10% kaolin, 6-12% potassium feldspar, 8-18% sodium feldspar, 3-7% quartz, 5-10% barium carbonate, 8-16% zirconium silicate, 3-7% talc, 3-5% dolomite, 1.5-4% calcined zinc oxide, and 10-23% frit.

[0079] In this embodiment, different oxides are mixed in a certain proportion, and after ball milling, sieving, iron removal, and aging, they are used as ceramic glaze slurry. Specifically, the raw materials for the glaze refer to calcined kaolin, quartz, potassium feldspar, sodium feldspar, barium carbonate, talc, dolomite, calcined zinc oxide, zirconium silicate, frit, etc., and the quartz powder has a fineness of 400 mesh.

[0080] Specifically, the processed or selected glaze raw materials are prepared according to the formula, mixed with an appropriate amount of water, and 0.3-0.5% sodium carboxymethyl cellulose and sodium tripolyphosphate are added as ball milling aids. The mixture is then ball-milled to a fineness of 0.3-0.5% residue on a 325-mesh sieve, and then placed in a slurry tank for aging for 24 hours.

[0081] The glaze formulation in this application uses high-calcium and high-barium raw materials, which helps to lower the glaze temperature, increase the bonding performance between the body and the glaze, ensure that the shrinkage phases of the body and the glaze are similar, and will not cause large defects; in addition, after high-temperature reaction, calcium feldspar and barium feldspar are generated, which improves the strength and density of the product.

[0082] In the embodiments of this application, the chemical composition of the glaze formulation, by mass percentage, includes: SiO2 42-49%, Al2O3 10-14%, CaO 4-6%, MgO 1-3%, K2O+Na2O 2-4%, ZnO 2-6%, BaO 6-11%, ZrO2 8-13%, TiO2 0-1%, Fe2O3 0-1%, and B2O3 0-2%.

[0083] Specifically, the chemical composition of the glaze formulation, by mass percentage, includes: SiO2 45.16%, Al2O3 13.69%, CaO 5.30%, MgO 1.78%, K2O+Na2O 3.79%, ZnO 2.38%, BaO 6.40%, ZrO2 8.17%, TiO2 0.46%, Fe2O3 0.37%, B2O3 0.32%, and a loss on ignition of 12.18%. The embodiments of this application ensure glaze quality through the mass percentage of each chemical component in the glaze formulation.

[0084] like Figure 1 As shown, the method for preparing building ceramics from entirely lean materials further includes:

[0085] Step S400: Process the ceramic blank to obtain building ceramics.

[0086] In this embodiment, the dried ceramic tile body is glazed, printed with decorations, coated with a base slurry, and fired in a kiln to obtain architectural ceramics.

[0087] In this embodiment of the application, step S400 specifically includes:

[0088] Step S410: The ceramic blank is sent into a microwave drying oven for rapid drying, and the rapidly dried ceramic blank is sent into a drying kiln for further drying to obtain a dried ceramic blank.

[0089] Step S420: Apply the glaze to the dried ceramic body, and after printing decoration and applying a base coat, fire it in a kiln to obtain architectural ceramics.

[0090] Specifically, during rapid drying in a microwave drying oven, the drying time is 10 minutes. Microwave drying has high energy utilization, provides uniform drying, and has a fast drying rate. Furthermore, the heat conduction direction is the same as the moisture diffusion direction, which reduces the likelihood of product cracking. The drying time in a drying kiln is 1.5 hours, with a maximum kiln temperature of 150℃ and an outlet temperature of 100℃. After drying, the moisture content of the green body is ≤0.8%, and the drying shrinkage is 1-3%.

[0091] In the embodiments of this application, the specific gravity of the glaze slurry is 1.65–0.70, the fineness under a 325-mesh sieve is 0.3–0.5, and the glaze application amount is 450–500 g / m³. 2 The brick base slurry is magnesium oxide slurry; the firing conditions for firing in the kiln include a firing temperature of 1100-1145℃, a firing cycle of 38-42 minutes, and an oxidizing atmosphere.

[0092] Specifically, the glazing method is either pouring or spraying glaze; the glazing process parameters are as follows:

[0093]

[0094]

[0095] The water absorption rate after firing ranges from 0 to 0.5%; the firing shrinkage is 12% to 14.5%. Aluminum dihydrogen phosphate polymerizes at low temperatures to form aluminum phosphate, which provides strength to the green body. At high temperatures, it also participates in the vitrification of the ceramic body, increases the aluminum content, and promotes the increase of mullite content in the body. The modulus of rupture of the product after firing is tested to be 65.8 MPa.

[0096] Building ceramic wall and floor tiles are prepared by using all lean materials combined with wet molding process, so that the strength of the green body is comparable to that of green bodies prepared by traditional ceramic formula, thereby reducing the investment in heavy equipment such as spray drying towers and presses and improving the current production process.

[0097] The embodiments of this application achieve the following effects:

[0098] First, by adding aluminum dihydrogen phosphate solution as a green body reinforcing agent, the amount of clay used was completely replaced, and the green body strength reached or exceeded that of using clay, ensuring the smooth progress of production.

[0099] Secondly, the wet molding process reduces the harm to the human body caused by dust in the workshop; it also changes the production process of ceramic products, making it more economical and environmentally friendly.

[0100] Third, it reduces the investment and maintenance costs of heavy equipment such as spray drying towers, silos, and presses; and eliminates the need for frequent changes to product molds.

[0101] Fourth, aluminum dihydrogen phosphate solution itself has a certain viscosity. When added to barren raw materials as a reinforcing agent, it not only enhances the strength of the green body but also increases its viscosity.

[0102] Fifth, roll forming is used, eliminating the need for large-scale presses, and roll forming can be performed according to the desired size.

[0103] Sixth, the significant improvement in the strength of the ceramic body facilitates the lightweighting of ceramic products, enabling them to become thinner and making building materials more green and energy-efficient.

[0104] Seventh, by changing the formula of the raw materials for the billet and consuming low-cost raw materials, the same strength as the finished product can be achieved, thereby reducing production costs.

[0105] The following is a specific example for illustration.

[0106] like Figure 2 As shown, after mixing the barren raw material, dispersant, and water, proceed to the following steps:

[0107] Step A1: Ball milling;

[0108] Step A2: Pressing the mud;

[0109] Step A3: Add aluminum dihydrogen phosphate solution and knead under vacuum;

[0110] Step A4: Roll forming;

[0111] Step A5: Drying;

[0112] Step A6: Apply glaze and print;

[0113] Step A7: Firing.

[0114] The present invention also provides a building ceramic, which is prepared by the method for preparing building ceramics from completely barren materials as described above; specifically as described above.

[0115] This invention provides a method for preparing building ceramics from entirely lean materials and the resulting building ceramics. The method includes: mixing raw mineral materials for the green body according to a predetermined formula to obtain a mixed raw material, wherein the raw mineral materials for the green body are entirely lean materials; wet ball milling the mixed raw material and then processing it to obtain a green body clay; adding aluminum dihydrogen phosphate solution to the green body clay and then extruding it to obtain a clay material; feeding the clay material into a roller press to prepare a ceramic green body; and processing the ceramic green body to obtain building ceramics. This invention uses entirely lean materials as ceramic raw materials, eliminating the need for clay, and by adding aluminum dihydrogen phosphate solution to improve the strength of the ceramic green body. Through extrusion molding and roller press processing, a shaped ceramic green body is obtained, solving the problem that reducing the amount of clay would lead to a decrease in the strength of the ceramic green body and difficulty in shaping the ceramic green body.

[0116] It should be understood that the application of the present invention is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A method for preparing building ceramics from entirely lean materials, characterized in that, The method includes: The raw materials for billet are mixed according to the predetermined billet formula to obtain mixed raw materials, wherein the raw materials for billet are completely lean materials; The mixed raw materials are subjected to wet ball milling and then processed to obtain a blank mud ball; Aluminum dihydrogen phosphate solution is added to the blank clay and then extruded to obtain clay material. The clay material is then fed into a roller press to prepare a ceramic blank. The ceramic blank is processed to obtain building ceramics; The mineral raw materials for billets, by weight, include: Sodium sand 20-30 parts, water-polished sand 40-65 parts, potassium aluminum sand 20-45 parts, aluminum sand 0-10 parts, black talc 0-3 parts, wollastonite 1-5 parts; The chemical composition of the preform formulation, by mass percentage, includes: SiO2 64~72%, Al2O316~20%, CaO+MgO 1~4%, K2O+Na2O 7~12%, Fe2O3 0~1%, TiO20~1%; Aluminum dihydrogen phosphate solution is added to the raw clay, which is then extruded to obtain a clay material. This clay material is then fed into a roller press to prepare a ceramic green body, comprising: Add 10% aluminum dihydrogen phosphate solution to the blank clay; Under a vacuum of 0.1 MPa in a vacuum pug mill, the billet mud lumps after adding aluminum dihydrogen phosphate solution are pug milled and extruded from the extrusion port of the vacuum pug mill to obtain mud material. The clay material is fed into a roller press and cut by the roller press to obtain a ceramic blank; The method for preparing building ceramics from completely barren materials further includes: The raw materials for the glaze are mixed according to the predetermined glaze formula, and then ball-milled, sieved, iron-removed, and aged to obtain the glaze slurry. The raw materials for the glaze, by weight percentage, include: Kaolin 6-10%, potassium feldspar 6-12%, sodium feldspar 8-18%, quartz 3-7%, barium carbonate 5-10%, zirconium silicate 8-16%, talc 3-7%, dolomite 3-5%, calcined zinc oxide 1.5-4%, frit 10-23%; The chemical composition of the glaze formulation, by mass percentage, includes: SiO2 42~49%, Al2O3 10~14%, CaO 4~6%, MgO 1~3%, K2O+Na2O 2~4%, ZnO 2~6%, BaO6~11%, ZrO2 8~13%, TiO2 0~1%, Fe2O3 0~1%, B2O30~2%; After wet ball milling, the mixed raw materials are processed to obtain a blank mud, comprising: Water is added to the mixed raw materials, and water glass and tripolyphosphate are added as water-reducing agents before the mixture is fed into a ball mill. The mixed raw materials are ball-milled in a ball mill to obtain a slurry, which is then aged. The aged mud slurry is pressed to obtain raw mud balls; The fineness of the mud slurry is 0.6-1.5% residue on a 325-mesh sieve, and the moisture content of the raw mud lump is 19-24%. The ceramic blank is processed to obtain building ceramics, including: The ceramic blank is sent into a microwave drying oven for rapid drying, and the rapidly dried ceramic blank is sent into a drying kiln for further drying to obtain a dried ceramic blank. The glaze is applied to the dried ceramic body, and after printing decoration and applying a base coat of slurry, it is fired in a kiln to obtain architectural ceramics. The specific gravity of the glaze slurry is 1.65~1.70, and the glaze application rate is 450~500g / m³. 2 The brick base slurry is magnesium oxide slurry; the firing conditions for firing in the kiln include a firing temperature of 1100-1145℃, a firing cycle of 38-42min, and a firing atmosphere of oxidizing atmosphere. The strength of the green body after drying is 6.51 MPa; aluminum dihydrogen phosphate polymerizes at low temperature to form aluminum phosphate, which provides strength to the green body; at high temperature, it participates in the vitrification of the ceramic green body, providing aluminum content to promote the increase of mullite content in the green body.

2. A type of architectural ceramic, characterized in that, The building ceramics are prepared by the method for preparing building ceramics from barren materials as described in claim 1.

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