A high-proportion recycled material low-temperature rapid-firing ceramic and its preparation method

Abstract

The present invention belongs to the technical field of ceramics. Specifically disclosed by the present invention are a ceramic with high proportion of recycled materials and low-temperature rapid firing and a preparation method thereof, including the following preparation raw materials: reinforcing material, polishing clay, pressing clay, talc clay, recycled material, lignin, and liquid deflocculant; the weight ratio of the reinforcing material, polishing clay, pressing clay, talc clay, recycled material, lignin, and liquid deflocculant is (1~3):(4~7):(12~18):(1~2):(2~3):(0.05~0.2):(0.8~1.2); the present invention uses the waste materials (polishing clay, pressing clay, recycled material) generated during the ceramic production process, together with the reinforcing material, talc clay, and lignin, to obtain a ceramic with excellent wear resistance and mechanical properties. The present invention can turn waste into treasure and recycle the unusable raw materials.

Description

Technical Field

[0001] The present invention relates to the technical field of ceramics, and particularly relates to a high-proportion recycled material low-temperature rapid-firing ceramic and a preparation method thereof. Background Art

[0002] In the traditional ceramic preparation process, the raw material consumption is large, the energy consumption is high, and the waste discharge is large, which does not meet the current environmental protection and sustainable development requirements. In order to reduce production costs, reduce resource waste and environmental pollution.

[0003] With the increasing amount of industrial waste and recycled materials, how to effectively utilize recycled materials on the premise of ensuring ceramic performance has become a research hotspot and difficult problem. The use of a high proportion of recycled materials in ceramics easily leads to a decline in performance.

[0004] In view of this, the present application is proposed. Summary of the Invention

[0005] The present invention provides a high-proportion recycled material low-temperature rapid-firing ceramic and a preparation method thereof. The ceramic described in the present invention has excellent wear resistance and mechanical properties.

[0006] The present invention solves its technical problems by adopting the following technical solutions:

[0007] A high-proportion recycled material low-temperature rapid-firing ceramic, comprising the following preparation raw materials: reinforcing material, polishing clay, pressing clay, talc clay, recycled material, lignin, liquid deflocculant; the weight ratio of the reinforcing material, polishing clay, pressing clay, talc clay, recycled material, lignin, and liquid deflocculant is (1-3):(4-7):(12-18):(1-2):(2-3):(0.05-0.2):(0.8-1.2);

[0008] The pressing clay comprises the following chemical components in weight percentage: 18-20% Al2O3, 0.7-1% Fe2O3, 0.005-0.012% TiO2, 2-2.5% MgO, 1.8-2.2% CaO, 3-3.5% K2O, 2-2.5% Na2O, and the balance SiO2.

[0009] The present invention uses the waste materials (polishing clay, pressing clay, recycled material) generated in the ceramic production process, reinforcing material, talc clay and lignin to obtain a ceramic with excellent wear resistance and mechanical properties. The present invention can turn waste into treasure and recycle the unusable raw materials.

[0010] As a preferred implementation scheme of the present invention, the sintering temperature of the high-proportion recycled material low-temperature rapid-firing ceramic is 1125-1150 °C, and the time is 30-60 min.

[0011] The present invention adopts low-temperature raw firing, which has the effects of energy conservation and environmental protection, and effectively reduces fuel consumption.

[0012] As a preferred embodiment of the present invention, the recycled material comprises the following chemical components in weight percentage: 15-18% Al2O3, 0.2-0.4% Fe2O3, 0.08-0.2% TiO2, 3-3.5% MgO, 2.5-2.8% CaO, 2.5-2.8% K2O, 2.4-2.6% Na2O, 5-7% ZnO, and the balance SiO2.

[0013] As a preferred embodiment of the present invention, the polishing clay comprises the following chemical components in weight percentage: 12-14% Al2O3, 10-15% B2O3, 0.5-0.8% Fe2O3, 0.008-0.02% TiO2, 4-6% MgO, 2-3% CaO, 3-3.4% K2O, 2-3.5% BaO, 1-1.5% Na2O, and the balance SiO2.

[0014] As a preferred embodiment of the present invention, the reinforcing material comprises modified magnesite, calcined kaolin, wollastonite and strontium carbonate; the mass ratio of the modified magnesite, calcined kaolin, wollastonite and strontium carbonate is 1:(0.8-1.2):(0.2-0.5):(0.1-0.4).

[0015] Among them, the modified magnesite of the present invention has excellent reaction activity and dispersion performance, can prevent the propagation of cracks and increase the flexural strength and toughness. After modification, the interfacial bonding force between the modified magnesite and the ceramic matrix is enhanced, which helps stress transfer and improves the overall mechanical properties of the composite material; the calcined kaolin has a relatively high surface area, and when filled in the ceramic matrix, it can effectively improve the density and flexural strength of the ceramic. Moreover, the calcined kaolin can form a new reinforcing phase with the alkali metal oxides in the system, improving the sinterability and mechanical properties of the ceramic; the acicular crystals of wollastonite play the role of "micro reinforcing ribs" in the ceramic matrix, increasing the crack resistance and improving the fracture toughness of the ceramic. At the specific sintering temperature of the present invention, wollastonite will partially melt to form a glass phase, which helps to improve the densification and bonding strength of the ceramic material; strontium carbonate acts as a flux in the ceramic, helping to form a low-melting-point liquid phase during the sintering process, making the matrix more uniform and densified, thereby improving the mechanical properties and sintering density; at the same time, strontium carbonate can refine the grains and inhibit the crack propagation to improve the toughness of the ceramic.

[0016] By using modified magnesite, calcined kaolin, wollastonite, and strontium carbonate as reinforcing materials, the present invention can significantly improve the comprehensive performance of ceramic materials. These reinforcing materials act together to improve the mechanical properties and wear resistance of ceramics by increasing the density, toughness, and high-temperature stability of the ceramics, reducing crack propagation and thermal expansion mismatch. Specifically, modified magnesite enhances the refractory performance and mechanical stability, calcined kaolin promotes the formation of mullite and increases the density, wollastonite improves the crack resistance through its acicular structure, and strontium carbonate improves the crack resistance and strength performance through fluxing and grain optimization.

[0017] As a preferred embodiment of the present invention, the preparation method of the modified magnesite is as follows:

[0018] Crush magnesite to 200 - 500 mesh, calcine it to obtain calcined magnesite powder;

[0019] Add the calcined magnesite powder and boric acid to a nitric acid solution, stir evenly to obtain a first mixed solution;

[0020] Add vinyltriacetoxysilane, sodium dodecylbenzenesulfonate, and graphene to the first mixed solution, stir evenly to obtain a second mixed solution;

[0021] Add lanthanum nitrate and cerium nitrate to the second mixed solution, perform ultrasonic treatment, stir evenly, filter, and dry to obtain modified magnesite.

[0022] As a preferred embodiment of the present invention, the calcination temperature is 450 - 500 °C, and the calcination time is 2 - 5 h.

[0023] As a preferred embodiment of the present invention, the mass ratio of the calcined magnesite powder, boric acid, and nitric acid solution is 1:(0.05 - 0.12):(8 - 12);

[0024] The concentration of the nitric acid solution is 0.5 - 2 mol / L.

[0025] As a preferred embodiment of the present invention, the mass ratio of vinyltriacetoxysilane, sodium dodecylbenzenesulfonate, graphene, and the first mixed solution is (0.1 - 0.3):(0.5 - 1.2):(1 - 3):100;

[0026] The mass ratio of lanthanum nitrate, cerium nitrate, and the second mixed solution is (1 - 3):(1 - 3):100.

[0027] The present invention also provides a preparation method for a high - proportion recycled material low - temperature rapid - firing ceramic, including the following steps:

[0028] Mix the reinforcing material, polishing clay, pressing clay, talc clay, recycled material, lignin, and liquid glue remover evenly, sieve through a 200 - 500 mesh sieve, dry, and press into shape under a pressure of 60 - 100 MPa to obtain a green body; sinter the green body, cool, and grind the edges to obtain a low - temperature and rapid - firing ceramic with a high proportion of recycled material.

[0029] As a preferred embodiment of the present invention, the sintering temperature is 1125 - 1150 °C and the time is 30 - 60 min.

[0030] Advantages of the present invention: The present invention uses the waste materials (polishing clay, pressing clay, recycled material) generated during the ceramic production process, together with the reinforcing material, talc clay, and lignin, to obtain a ceramic with excellent wear resistance and mechanical properties. The present invention can turn waste into treasure and recycle the unusable raw materials. Detailed implementation manners

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] In the present invention, among the technically characterized described in an open - ended manner, there are included both a closed - ended technical solution composed of the listed features and an open - ended technical solution containing the listed features.

[0033] In the present invention, regarding the numerical range, unless otherwise specified, the above - mentioned numerical range is considered continuous and includes the minimum and maximum values of this range, as well as each value between such minimum and maximum values. Further, when the range refers to an integer, it includes each integer between the minimum and maximum values of this range. In addition, when multiple ranges are provided to describe features or characteristics, these ranges can be combined. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all sub - ranges subsumed therein.

[0034] In the present invention, there is no particular limitation on the specific dispersion and stirring treatment methods.

[0035] For the reagents or instruments used in the present invention that are not indicated by the manufacturer, they are all conventional products that can be obtained through commercial purchase. The raw materials used in each comparative ratio and the raw materials used in the parallel experiments of each example are the same commercially available products unless otherwise specified.

[0036] Example 1

[0037] A low-temperature and fast-firing ceramic with a high proportion of recycled materials, comprising the following preparation raw materials: reinforcing material, polishing clay, pressing clay, talc clay, recycled material, lignin, liquid deflocculant; the weight ratio of the reinforcing material, polishing clay, pressing clay, talc clay, recycled material, lignin, and liquid deflocculant is 2:6:16:1.5:2.5:0.1:0.95.

[0038] Among them, the liquid deflocculant is a sodium tripolyphosphate solution with a mass concentration of 20%.

[0039] The pressing clay includes the following chemical components by weight percentage: 18.86% Al2O3, 0.83% Fe2O3, 0.01% TiO2, 2.3% MgO, 1.98% CaO, 3.25% K2O, 2.35% Na2O, and the balance SiO2.

[0040] The recycled material includes the following chemical components by weight percentage: 16.58% Al2O3, 0.24% Fe2O3, 0.15% TiO2, 3.35% MgO, 2.67% CaO, 2.72% K2O, 2.54% Na2O, 6.42% ZnO, and the balance SiO2.

[0041] The polishing clay includes the following chemical components by weight percentage: 12.62% Al2O3, 13.51% B2O3, 0.67% Fe2O3, 0.01% TiO2, 5.24% MgO, 2.62% CaO, 3.28% K2O, 2.85% BaO, 1.3% Na2O, and the balance SiO2.

[0042] The reinforcing material includes modified magnesite, calcined kaolin, wollastonite, and strontium carbonate; the mass ratio of the modified magnesite, calcined kaolin, wollastonite, and strontium carbonate is 1:1:0.3:0.2.

[0043] The preparation method of the modified magnesite is as follows:

[0044] Crush magnesite to 400 mesh and calcine it at 480 °C for 3 h to obtain calcined magnesite powder;

[0045] Add the calcined magnesite powder and boric acid to a 1 mol / L nitric acid solution and stir evenly at a speed of 100 rpm to obtain a first mixed solution; the mass ratio of the calcined magnesite powder, boric acid, and nitric acid solution is 1:0.1:10;

[0046] Add vinyltriacetoxysilane, sodium dodecylbenzenesulfonate, and graphene to the first mixed solution and stir evenly at a speed of 100 rpm to obtain a second mixed solution; the mass ratio of vinyltriacetoxysilane, sodium dodecylbenzenesulfonate, graphene, and the first mixed solution is 0.2:1:2:100;

[0047] Add lanthanum nitrate and cerium nitrate to the second mixed solution, ultrasonically treat it at 300 W for 20 min, stir evenly at a rotation speed of 100 rpm, filter, and dry to obtain modified magnesite. The mass ratio of lanthanum nitrate, cerium nitrate, and the second mixed solution is 2:2:100.

[0048] The preparation method of the high-proportion recycled material low-temperature rapid-firing ceramic includes the following steps:

[0049] Mix the reinforcing material, polishing clay, pressing clay, talc clay, recycled material, lignin, and liquid deflocculant evenly, pass through a 400-mesh sieve, dry, and press into a shape at a pressure of 80 MPa to obtain a green body; sinter the green body at 1135 °C for 50 min, cool, and grind the edges to obtain the high-proportion recycled material low-temperature rapid-firing ceramic.

[0050] Example 2

[0051] A high-proportion recycled material low-temperature rapid-firing ceramic includes the following preparation raw materials: reinforcing material, polishing clay, pressing clay, talc clay, recycled material, lignin, and liquid deflocculant; the weight ratio of the reinforcing material, polishing clay, pressing clay, talc clay, recycled material, lignin, and liquid deflocculant is 1:4:12:1:2:0.05:0.8.

[0052] Among them, the liquid deflocculant is a sodium tripolyphosphate solution with a mass concentration of 20%.

[0053] The pressing clay includes the following chemical components in weight percentage: 18.86% Al2O3, 0.83% Fe2O3, 0.01% TiO2, 2.3% MgO, 1.98% CaO, 3.25% K2O, 2.35% Na2O, and the balance SiO2.

[0054] The recycled material includes the following chemical components in weight percentage: 16.58% Al2O3, 0.24% Fe2O3, 0.15% TiO2, 3.35% MgO, 2.67% CaO, 2.72% K2O, 2.54% Na2O, 6.42% ZnO, and the balance SiO2.

[0055] The polishing clay includes the following chemical components in weight percentage: 12.62% Al2O3, 13.51% B2O3, 0.67% Fe2O3, 0.01% TiO2, 5.24% MgO, 2.62% CaO, 3.28% K2O, 2.85% BaO, 1.3% Na2O, and the balance SiO2.

[0056] The reinforcing material includes modified magnesite, calcined kaolin, wollastonite, and strontium carbonate; the mass ratio of the modified magnesite, calcined kaolin, wollastonite, and strontium carbonate is 1:1:0.3:0.2.

[0057] The preparation method of the modified magnesite is as follows:

[0058] Crush magnesite to 400 mesh, calcine it at 480 °C for 3 h to obtain calcined magnesite powder;

[0059] Add the calcined magnesite powder and boric acid into a 1 mol / L nitric acid solution, stir evenly at a speed of 100 rpm to obtain a first mixed solution; the mass ratio of the calcined magnesite powder, boric acid, and nitric acid solution is 1:0.1:10;

[0060] Add vinyltriacetoxysilane, sodium dodecylbenzenesulfonate, and graphene into the first mixed solution, stir evenly at a speed of 100 rpm to obtain a second mixed solution; the mass ratio of vinyltriacetoxysilane, sodium dodecylbenzenesulfonate, graphene, and the first mixed solution is 0.2:1:2:100;

[0061] Add lanthanum nitrate and cerium nitrate into the second mixed solution, perform ultrasonic treatment at 300 W for 20 min, stir evenly at a speed of 100 rpm, filter, and dry to obtain modified magnesite. The mass ratio of lanthanum nitrate, cerium nitrate, and the second mixed solution is 2:2:100.

[0062] The preparation method of the high-proportion recycled material low-temperature rapid-firing ceramic includes the following steps:

[0063] Mix the reinforcing material, polishing clay, pressing clay, talc clay, recycled material, lignin, and liquid deflocculant evenly, pass through a 400-mesh sieve, dry, press and form at a pressure of 80 MPa to obtain a green body; sinter the green body at 1135 °C for 50 min, cool, and grind the edges to obtain the high-proportion recycled material low-temperature rapid-firing ceramic.

[0064] Example 3

[0065] A high-proportion recycled material low-temperature rapid-firing ceramic includes the following preparation raw materials: reinforcing material, polishing clay, pressing clay, talc clay, recycled material, lignin, and liquid deflocculant; the weight ratio of the reinforcing material, polishing clay, pressing clay, talc clay, recycled material, lignin, and liquid deflocculant is 3:7:18:2:3:0.2:1.2.

[0066] Among them, the liquid deflocculant is a sodium tripolyphosphate solution with a mass concentration of 20%.

[0067] The pressed mud comprises the following chemical components by weight percentage: 18.86% Al2O3, 0.83% Fe2O3, 0.01% TiO2, 2.3% MgO, 1.98% CaO, 3.25% K2O, 2.35% Na2O, and the balance is SiO2.

[0068] The recycled material comprises the following chemical components by weight percentage: 16.58% Al2O3, 0.24% Fe2O3, 0.15% TiO2, 3.35% MgO, 2.67% CaO, 2.72% K2O, 2.54% Na2O, 6.42% ZnO, and the balance is SiO2.

[0069] The polished mud comprises the following chemical components by weight percentage: 12.62% Al2O3, 13.51% B2O3, 0.67% Fe2O3, 0.01% TiO2, 5.24% MgO, 2.62% CaO, 3.28% K2O, 2.85% BaO, 1.3% Na2O, and the balance is SiO2.

[0070] The reinforcing material comprises modified magnesite, calcined kaolin, wollastonite, and strontium carbonate; the mass ratio of the modified magnesite, calcined kaolin, wollastonite, and strontium carbonate is 1:1:0.3:0.2.

[0071] The preparation method of the modified magnesite is as follows:

[0072] Crush magnesite to 400 mesh, and calcine it at 480 °C for 3 h to obtain calcined magnesite powder;

[0073] Add the calcined magnesite powder and boric acid into a 1 mol / L nitric acid solution, and stir evenly at a speed of 100 rpm to obtain a first mixed solution; the mass ratio of the calcined magnesite powder, boric acid, and nitric acid solution is 1:0.1:10;

[0074] Add vinyltriacetoxysilane, sodium dodecylbenzenesulfonate, and graphene into the first mixed solution, and stir evenly at a speed of 100 rpm to obtain a second mixed solution; the mass ratio of vinyltriacetoxysilane, sodium dodecylbenzenesulfonate, graphene, and the first mixed solution is 0.2:1:2:100;

[0075] Add lanthanum nitrate and cerium nitrate into the second mixed solution, perform ultrasonic treatment at 300 W for 20 min, stir evenly at a speed of 100 rpm, filter, and dry to obtain modified magnesite. The mass ratio of lanthanum nitrate, cerium nitrate, and the second mixed solution is 2:2:100.

[0076] The preparation method of the high-proportion recycled material low-temperature rapid-firing ceramic comprises the following steps:

[0077] Mix the reinforcing material, polishing clay, pressing clay, talc clay, recycled material, lignin, and liquid glue remover evenly, pass through a 400-mesh sieve, dry, and press into shape under a pressure of 80 MPa to obtain a green body; sinter the green body at 1135 °C for 50 min, cool, and grind the edges to obtain a low-temperature and rapid-firing ceramic with a high proportion of recycled material.

[0078] Comparative Example 1

[0079] The difference between Comparative Example 1 and Example 1 is that Comparative Example 1 does not contain the reinforcing material, and the others are the same.

[0080] A low-temperature and rapid-firing ceramic with a high proportion of recycled material, comprising the following raw materials for preparation: polishing clay, pressing clay, talc clay, recycled material, lignin, and liquid glue remover; the weight ratio of the polishing clay, pressing clay, talc clay, recycled material, lignin, and liquid glue remover is 6:16:1.5:2.5:0.1:0.95.

[0081] Comparative Example 2

[0082] The difference between Comparative Example 2 and Example 1 is that the reinforcing material in Comparative Example 1 is a single modified magnesite, and the others are the same.

[0083] The reinforcing material described in this comparative example is modified magnesite.

[0084] Comparative Example 3

[0085] The difference between Comparative Example 3 and Example 1 is that in Comparative Example 3, an equal amount of magnesite is used to replace the modified magnesite, and the others are the same.

[0086] The reinforcing material includes magnesite, calcined kaolin, wollastonite, and strontium carbonate; the mass ratio of magnesite, calcined kaolin, wollastonite, and strontium carbonate is 1:1:0.3:0.2.

[0087] Comparative Example 4

[0088] The difference between Comparative Example 4 and Example 1 is that the preparation method of the modified magnesite described in Comparative Example 4 is different from that in Example 1, and the others are the same.

[0089] The preparation method of the modified magnesite is as follows:

[0090] Crush the magnesite to 400 mesh, calcine it at 480 °C for 3 h to obtain calcined magnesite powder;

[0091] Add the calcined magnesite powder and boric acid to a 1 mol / L nitric acid solution, stir evenly at a speed of 100 rpm to obtain a first mixed solution; the mass ratio of the calcined magnesite powder, boric acid, and nitric acid solution is 1:0.1:10;

[0092] Lanthanum nitrate and cerium nitrate were added to the first mixed solution, ultrasonicated at 300 W for 20 min, stirred evenly at a rotation speed of 100 rpm, filtered, and dried to obtain modified magnesite. The mass ratio of lanthanum nitrate, cerium nitrate, and the first mixed solution was 2:2:100.

[0093] Comparative Example 5

[0094] The difference between Comparative Example 5 and Example 1 is that the preparation method of the modified magnesite described in Comparative Example 4 is different from that in Example 1, and the others are the same.

[0095] The preparation method of the modified magnesite is as follows:

[0096] The magnesite was crushed to 400 mesh and calcined at 480 °C for 3 h to obtain calcined magnesite powder;

[0097] The calcined magnesite powder and boric acid were added to a 1 mol / L nitric acid solution and stirred evenly at a rotation speed of 100 rpm to obtain a first mixed solution; the mass ratio of the calcined magnesite powder, boric acid, and nitric acid solution was 1:0.1:10;

[0098] Vinyltriacetoxysilane, sodium dodecylbenzenesulfonate, and graphene were added to the first mixed solution and stirred evenly at a rotation speed of 100 rpm to obtain a second mixed solution; filtered and dried to obtain modified magnesite. The mass ratio of vinyltriacetoxysilane, sodium dodecylbenzenesulfonate, graphene, and the first mixed solution was 0.2:1:2:100.

[0099] Comparative Example 6

[0100] The difference between Comparative Example 6 and Example 1 is that the sintering temperature of Comparative Example 6 is 1050 °C, and the others are the same.

[0101] Comparative Example 7

[0102] The difference between Comparative Example 7 and Example 1 is that the sintering temperature of Comparative Example 7 is 1300 °C, and the others are the same.

[0103] Test Example

[0104] 1. The glaze abrasion resistance was tested using the test method in GB / T3810.7-2016 "Determination of Surface Abrasion Resistance of Glazed Tiles", and the wear loss was tested at 6000 revolutions. The test results are shown in Table 1.

[0105] 2. The flexural strength was tested using a flexural testing machine. The test results are shown in Table 1.

[0106] Table 1

[0107]

[0108] As can be seen from Table 1, the ceramics according to the present invention have excellent wear resistance and mechanical properties.

[0109] Finally, it should be noted that the above embodiments are used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A low-temperature and rapid-firing ceramic with a high proportion of recycled materials, characterized in that, It includes the following preparation raw materials: reinforcing material, polishing clay, pressing clay, talc clay, recycled material, lignin, and liquid peptizer; the weight ratio of the reinforcing material, polishing clay, pressing clay, talc clay, recycled material, lignin, and liquid peptizer is (1~3):(4~7):(12~18):(1~2):(2~3):(0.05~0.2):(0.8~1.2); The pressing clay includes the following chemical components by weight percentage: 18~20% Al2O3, 0.7~1% Fe2O3, 0.005~0.012% TiO2, 2~2.5% MgO, 1.8~2.2% CaO, 3~3.5% K2O, 2~2.5% Na2O, and the balance SiO2; The recycled material includes the following chemical components by weight percentage: 15~18% Al2O3, 0.2~0.4% Fe2O3, 0.08~0.2% TiO2, 3~3.5% MgO, 2.5~2.8% CaO, 2.5~2.8% K2O, 2.4~2.6% Na2O, 5~7% ZnO, and the balance SiO2; The reinforcing material includes modified magnesite, calcined kaolin, wollastonite, and strontium carbonate; the mass ratio of the modified magnesite, calcined kaolin, wollastonite, and strontium carbonate is 1:(0.8~1.2):(0.2~0.5):(0.1~0.4); The preparation method of the modified magnesite is as follows: Crush magnesite to 200~500 meshes, and calcine to obtain calcined magnesite powder; Add the calcined magnesite powder and boric acid into a nitric acid solution, and stir evenly to obtain a first mixed solution; Add vinyltriacetoxysilane, sodium dodecylbenzenesulfonate, and graphene into the first mixed solution, and stir evenly to obtain a second mixed solution; Add lanthanum nitrate and cerium nitrate into the second mixed solution, perform ultrasonic treatment, stir evenly, filter, and dry to obtain modified magnesite.

2. The low-temperature rapid-firing ceramic with a high proportion of recycled materials according to claim 1, characterized in that, The polishing clay includes the following chemical components by weight percentage: 12~14% Al2O3, 10~15% B2O3, 0.5~0.8% Fe2O3, 0.008~0.02% TiO2, 4~6% MgO, 2~3% CaO, 3~3.4% K2O, 2~3.5% BaO, 1~1.5% Na2O, and the balance SiO2.

3. The low-temperature rapid-firing ceramic with a high proportion of recycled materials according to claim 1, characterized in that, The calcination temperature is 450~500 °C, and the calcination time is 2~5 h.

4. The low-temperature rapid-firing ceramic with a high proportion of recycled materials according to claim 1, wherein The mass ratio of the calcined magnesite powder, boric acid, and nitric acid solution is 1:(0.05~0.12):(8~12); The concentration of the nitric acid solution is 0.5~2 mol / L.

5. The low-temperature rapid-firing ceramic with a high proportion of recycled materials according to claim 1, characterized in that, The mass ratio of the vinyltriacetoxysilane, sodium dodecylbenzenesulfonate, graphene, and first mixed solution is (0.1~0.3):(0.5~1.2):(1~3):100; The mass ratio of the lanthanum nitrate, cerium nitrate, and second mixed solution is (1~3):(1~3):

100.

6. The preparation method of the high-proportion recycled material low-temperature rapid-firing ceramic according to any one of claims 1 to 5, characterized in that, It includes the following steps: Mix the reinforcing material, polishing clay, pressing clay, talc clay, recycled material, lignin, and liquid sizing agent evenly, sieve through a 200 - 500 mesh sieve, dry, and press into shape under a pressure of 60 - 100 MPa to obtain a green body; sinter the green body, cool, and grind the edges to obtain a low - temperature and rapid - firing ceramic with a high proportion of recycled material.

7. The preparation method of the high-proportion recycled material low-temperature rapid-firing ceramic according to claim 6, characterized in that, The temperature of the sintering is 1125 - 1150 °C, and the time is 30 - 60 min.

Images