A method for preparing a white foamed ceramic carving substrate

Abstract

The application relates to the household kitchen technical field and provides a preparation method of a white foamed ceramic carving substrate, the white foamed ceramic carving substrate comprises a first component: 10-20% of coal gangue, 20-30% of fly ash, 10-15% of talc, 15-20% of kaolin, 5-10% of quartz sand, 5-10% of aluminum silicate, 10-15% of paper pulp waste, 2-4% of fluxing agent and 3-5% of white pigment, the rest is unavoidable impurities <=0.5%; and the second component is composed of 50-60% of aluminum oxide powder and 40-50% of an organic solvent. The recyclable resources are selected as the ceramic base material, the consumption of natural resources is reduced, the sustainable development concept is met, the energy consumption and environmental pollution in the production process are reduced, the production cost of the ceramic plate is reduced, the ceramic substrate has good carving performance, is convenient to process, has good wear resistance and corrosion resistance, the lines are clear, and the storage time is long.

Description

Technical Field

[0001] This invention relates to the field of ceramic plate preparation technology, specifically a method for preparing a white foamed ceramic engraving substrate. Background Technology

[0002] With the development of modern technology and the improvement of people's living standards, the demand for new building materials and decorative materials is constantly growing. Ceramic slabs, as a new type of building material, have been widely used in construction and decoration due to their excellent fire resistance, compressive strength, and environmental performance.

[0003] However, traditional ceramic slabs have certain limitations in terms of sculptability, which cannot meet the market demand for personalization and creativity. Therefore, researching ways to improve the sculptability of ceramic slabs is of great practical significance. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a method for preparing a white foamed ceramic engraving substrate, which solves the problem of poor engraving performance of ceramic plates in existing technologies.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for preparing a white foamed ceramic engraving substrate, comprising the following steps:

[0006] S1. First component: 10%-20% coal gangue, 20%-30% fly ash, 10%-15% talc, 15%-20% kaolin, 5%-10% quartz sand, 5%-10% aluminum silicate, 10%-15% pulp waste, 2%-4% flux and 3%-5% white pigment, with the remainder being unavoidable impurities ≤0.5%, are mixed as raw materials;

[0007] The second component: 50%-60% by weight of alumina powder and 40%-50% by weight of organic solvent are mixed evenly to prepare a coating slurry for later use.

[0008] S2. The mixed raw materials are put into a ball mill for ball milling to obtain a raw material mixture with uniform solid particles. Then, the ball-milled mixture is dried.

[0009] S3. Place the dried mixture into a molding die and press it into a plate-shaped blank.

[0010] S4. After grinding and polishing the surface of the blank, the coating slurry in S1 is uniformly coated onto the surface of the blank using a spraying machine and then naturally dried to obtain a blank with an alumina coating.

[0011] S5. The billet with an alumina coating is placed in a high-temperature furnace for sintering. During the sintering process, the atmosphere is neutral.

[0012] S6. Polish the sintered ceramic plate. After polishing, inspect the ceramic plate. The ceramic plate that passes the inspection is the desired lightweight, high-hardness white foamed ceramic substrate.

[0013] Preferably, the flux in S1 is selected from one or more of borax, barite, albite, or potassium feldspar.

[0014] Preferably, the organic solvent in S1 is selected from one or more of methanol, ethanol, acetone or butanone.

[0015] Preferably, the drying method in S2 is natural drying, and the drying time is 1-2 days.

[0016] Preferably, the ball milling time in S2 is 2-4 hours, and the ball mill speed is 100-150 r / min.

[0017] Preferably, the pressure in step S3 is controlled at 10-30 MPa, and the molding temperature is 150-200℃.

[0018] Preferably, the coating thickness in S4 is 1-2 μm.

[0019] Preferably, in step S5, the billet is heated to 1000-1100°C in a high-temperature furnace, held at that temperature for 2-4 hours, and then cooled to room temperature.

[0020] Preferably, the polishing liquid in step S6 is an alumina polishing liquid, the polishing time is 5-10 min, the polishing speed is 0.1-0.2 μm / min, and the polishing liquid concentration is 5%-10%.

[0021] This invention provides a method for preparing a white foamed ceramic engraving substrate. It has the following beneficial effects:

[0022] 1. By selecting recyclable resources as ceramic base materials, this invention helps reduce the consumption of natural resources, conforms to the concept of sustainable development, reduces energy consumption and environmental pollution in the production process, and can reduce the production cost of ceramic slabs.

[0023] 2. This invention replaces traditional foaming agents with paper pulp waste. The addition of paper waste can form a microporous structure during sintering, which allows the ceramic plate to release internal stress more evenly, reducing the occurrence of cracks and fractures, and reducing the weight of the ceramic plate. At the same time, it increases the water absorption of the ceramic plate. During the engraving process, the cooling water absorbed in the engraving groove can help the heat dissipate more quickly and reduce tool wear.

[0024] 3. This invention improves the hardness and density of the ceramic slab surface by coating it with an alumina coating, resulting in clearer engraved lines, reduced splashing during engraving, and better protection for the ceramic slab, thus extending the shelf life of the engraved product. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1:

[0027] This invention provides a method for preparing a white foamed ceramic engraving substrate, comprising the following steps:

[0028] S1. First component: 10% coal gangue, 30% fly ash, 10% talc, 15% kaolin, 10% quartz sand, 10% aluminum silicate, 10% pulp waste, 2% flux and 3% white pigment, with the remainder being unavoidable impurities ≤0.5%, are mixed as raw materials.

[0029] The second component: Mix 50% by weight of alumina powder with 50% by weight of organic solvent to prepare a coating slurry.

[0030] S2. Place the mixed raw materials into a ball mill for ball milling. Then, dry the ball-milled mixture by natural drying for 1 day. The ball milling time is 2 hours and the ball mill speed is 100 r / min.

[0031] S3. Place the dried mixture into a molding mold and press it into a plate-shaped blank. The pressure is controlled at 10MPa and the molding temperature is 150℃.

[0032] S4. After grinding and polishing the surface of the blank, the coating slurry in S1 is uniformly coated onto the surface of the blank using a spraying machine and then naturally dried to obtain a blank with an alumina coating thickness of 1μm.

[0033] S5. The billet with alumina coating is placed in a high-temperature furnace for sintering. During the sintering process, the atmosphere is neutral. The temperature in the high-temperature furnace is raised to 1000℃ and held for 2 hours, and then cooled to room temperature.

[0034] S6. Polish the sintered ceramic plate with alumina polishing liquid for 5 minutes at a speed of 0.1 μm / min and a concentration of 5%. After polishing, inspect the ceramic plate. The qualified ceramic plate is the desired lightweight, high-hardness white foamed ceramic substrate.

[0035] Borax is selected as the flux in S1.

[0036] Methanol is selected as the organic solvent in S1.

[0037] Example 2:

[0038] This invention provides a method for preparing a white foamed ceramic engraving substrate, comprising the following steps:

[0039] S1. First component: 15% coal gangue, 25% fly ash, 12% talc, 18% kaolin, 5% quartz sand, 7% aluminum silicate, 13% pulp waste, 2% flux and 3% white pigment, with the remainder being unavoidable impurities ≤0.5%, are mixed as raw materials.

[0040] The second component: Mix 50% by weight of alumina powder with 50% by weight of organic solvent to prepare a coating slurry.

[0041] S2. Place the mixed raw materials into a ball mill for ball milling. Then, dry the ball-milled mixture by natural drying for 1 day. The ball milling time is 3 hours and the ball mill speed is 100 r / min.

[0042] S3. Place the dried mixture into a molding mold and press it into a plate-shaped blank. The pressure is controlled at 20MPa and the molding temperature is 150℃.

[0043] S4. After grinding and polishing the surface of the blank, the coating slurry in S1 is uniformly coated onto the surface of the blank using a spraying machine and then naturally dried to obtain a blank with an alumina coating thickness of 1.5μm.

[0044] S5. The billet with alumina coating is placed in a high-temperature furnace for sintering. During the sintering process, the atmosphere is neutral. The temperature in the high-temperature furnace is raised to 1000℃ and held for 3 hours, and then cooled to room temperature.

[0045] S6. Polish the sintered ceramic plate with alumina polishing liquid for 5 minutes at a speed of 0.15 μm / min and a concentration of 7%. After polishing, inspect the ceramic plate. The qualified ceramic plate is the desired lightweight, high-hardness white foamed ceramic substrate.

[0046] The flux used in S1 is barite.

[0047] Ethanol is selected as the organic solvent in S1.

[0048] Example 3:

[0049] This invention provides a method for preparing a white foamed ceramic engraving substrate, comprising the following steps:

[0050] S1. First component: 20% coal gangue, 20% fly ash, 10% talc, 20% kaolin, 5% quartz sand, 5% aluminum silicate, 15% pulp waste, 3% flux and 2% white pigment, with the remainder being unavoidable impurities ≤0.5%, are mixed as raw materials.

[0051] The second component: 60% by weight of alumina powder and 40% by weight of organic solvent are mixed evenly to prepare a coating slurry for later use;

[0052] S2. Place the mixed raw materials into a ball mill for ball milling. Then, dry the ball-milled mixture by natural drying for 2 days. The ball milling time is 3 hours and the ball mill speed is 150 r / min.

[0053] S3. Place the dried mixture into a molding mold and press it into a plate-shaped blank. The pressure is controlled at 30MPa and the molding temperature is 200℃.

[0054] S4. After grinding and polishing the surface of the blank, the coating slurry in S1 is uniformly coated onto the surface of the blank using a spraying machine and then naturally dried to obtain a blank with an alumina coating thickness of 2μm.

[0055] S5. The billet with alumina coating is placed in a high-temperature furnace for sintering. During the sintering process, the atmosphere is neutral. The temperature in the high-temperature furnace is raised to 1100℃ and held for 4 hours, and then cooled to room temperature.

[0056] S6. Polish the sintered ceramic plate with alumina polishing liquid for 10 min at a speed of 0.15 μm / min and a concentration of 10%. After polishing, inspect the ceramic plate. The qualified ceramic plate is the lightweight, high-hardness white foamed ceramic substrate.

[0057] The flux used in S1 is albite.

[0058] Acetone is selected as the organic solvent in S1.

[0059] Comparative example: Traditional foamed ceramic panels made primarily from clay, lime, silicates, and alumina.

[0060]

[0061] The white foamed ceramic engraving substrate preparation method provided in Examples 1-3 of this invention is excellent. The obtained ceramic substrate has good compressive strength, tensile strength, wear resistance and corrosion resistance. The product is lightweight, has high surface hardness, can be stored for a long time, and has outstanding performance in engraving processing.

[0062] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a white foamed ceramic engraving substrate, characterized in that, Includes the following steps: S1. First component: 10%-20% coal gangue, 20%-30% fly ash, 10%-15% talc, 15%-20% kaolin, 5%-10% quartz sand, 5%-10% aluminum silicate, 10%-15% pulp waste, 2%-4% flux and 3%-5% white pigment, with the remainder being unavoidable impurities ≤0.5%, are mixed as raw materials; The second component: 50%-60% by weight of alumina powder and 40%-50% by weight of organic solvent are mixed evenly to prepare a coating slurry for later use. S2. The mixed raw materials are put into a ball mill for ball milling to obtain a raw material mixture with uniform solid particles. Then, the ball-milled mixture is dried. S3. Place the dried mixture into a molding die and press it into a plate-shaped blank. S4. After grinding and polishing the surface of the blank, the coating slurry in S1 is uniformly coated onto the surface of the blank using a spraying machine and then naturally dried to obtain a blank with an alumina coating. S5. The billet with an alumina coating is placed in a high-temperature furnace for sintering. During the sintering process, the atmosphere is neutral. S6. Polish the sintered ceramic plate. After polishing, inspect the ceramic plate. The qualified ceramic plate is the lightweight, high-hardness white foamed ceramic substrate that is required.

2. The method for preparing a white foamed ceramic engraving substrate according to claim 1, characterized in that, The flux in S1 is selected from one or more of borax, barite, albite, or potassium feldspar.

3. The method for preparing a white foamed ceramic engraving substrate according to claim 1, characterized in that, The organic solvent in S1 is selected from one or more of methanol, ethanol, acetone or butanone.

4. The method for preparing a white foamed ceramic engraving substrate according to claim 1, characterized in that, The drying method in S2 is natural drying, and the drying time is 1-2 days.

5. The method for preparing a white foamed ceramic engraving substrate according to claim 1, characterized in that, The ball milling time in S2 is 2-4 hours, and the ball mill speed is 100-150 r / min.

6. The method for preparing a white foamed ceramic engraving substrate according to claim 1, characterized in that, The pressure in S3 is controlled at 10-30 MPa, and the molding temperature is 150-200℃.

7. The method for preparing a white foamed ceramic engraving substrate according to claim 1, characterized in that, The coating thickness in S4 is 1-2 μm.

8. The method for preparing a white foamed ceramic engraving substrate according to claim 1, characterized in that, In step S5, the billet is heated to 1000-1100℃ in a high-temperature furnace, held at that temperature for 2-4 hours, and then cooled to room temperature.

9. The method for preparing a white foamed ceramic engraving substrate according to claim 1, characterized in that, The polishing solution in S6 is an alumina polishing solution, the polishing time is 5-10 min, the polishing speed is 0.1-0.2 μm / min, and the polishing solution concentration is 5%-10%.

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