Aluminum titanate ceramic launder production method

Abstract

The invention discloses a production method of an aluminum titanate ceramic launder, which comprises the following steps: mixing raw materials to complete proportioning, and carrying out ball milling on the raw materials after proportioning to prepare aluminum titanate ceramic slurry; defoaming the prepared aluminum titanate ceramic slurry, performing spray granulation, and aging for later use; pressing the aged ceramic powder into an aluminum titanate ceramic launder green body, drying the pressed and molded green body, and simultaneously releasing the stress of the ceramic green body; the aluminum titanate ceramic launder green body is subjected to heating, heat preservation and cooling procedures; and processing the fired aluminum titanate launder, bonding the launder into a designed shape, then filling the launder with a thermal insulation material, installing a metal shell, and manufacturing the aluminum titanate ceramic launder. According to the invention, the service life of the launder is prolonged, the replacement frequency is reduced, the continuity of the production process is guaranteed, the use cost is reduced, the product loss caused by melt pollution is reduced, the labor intensity of operators is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ceramic launder production, and in particular to a method for producing an aluminum titanate ceramic launder. Background Art

[0002] In the aluminum casting industry, the aluminum liquid conveying channel is a key component used to transport the smelted high-temperature aluminum liquid from the furnace to subsequent processing equipment (such as casting molds, die-casting machines, etc.). It plays a role in ensuring the continuity of the production process, guaranteeing the quality of the aluminum liquid, and meeting different processing requirements. Therefore, the performance of the aluminum liquid conveying channel has a vital impact on production efficiency and product quality. At present, the industry generally uses castable chutes as aluminum liquid conveying channels, but this type of chute has the following defects: 1. Its service life is short, generally only about one year. Frequent replacement of the chute not only increases production costs, but also affects the continuity of production. Moreover, in actual production, the replacement of the chute requires downtime, which will cause production stagnation and delay the production plan, thereby increasing the company's operating costs. 2. The casting trough is easily corroded by the aluminum alloy melt, which not only shortens the service life of the trough itself, but also contaminates the aluminum alloy melt. Once the aluminum alloy melt is contaminated, it will affect the quality of the final product, resulting in product defects or even scrap. To ensure product quality, boron nitride coating needs to be sprayed before each use. However, boron nitride coating is expensive and the spraying operation is cumbersome, requiring professional equipment and operators, which further increases production costs and operational difficulty. 3. The surface of the castable chute is prone to aluminum sticking and must be cleaned before each use. The cleaning work not only consumes a lot of manpower and time, but also requires the use of special cleaning tools and chemicals, which greatly increases the labor intensity of the operator and reduces production efficiency.

[0003] Therefore, those skilled in the art are committed to providing a method for producing aluminum titanate ceramic launders that can effectively solve the above technical problems. Summary of the Invention

[0004] In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide a method for producing an aluminum titanate ceramic launder that can effectively solve the above-mentioned technical problems.

[0005] To achieve the above object, the present invention provides a method for producing an aluminum titanate ceramic launder, comprising the following steps: S1: mixing the raw materials to complete the batching, and ball-milling the raw materials after the batching to prepare aluminum titanate ceramic slurry; Through precise batching and sufficient ball milling, various raw materials are evenly mixed, laying the foundation for the subsequent formation of aluminum titanate ceramics with good performance and ensuring that the various performance indicators of the ceramics meet the requirements.

[0006] S2: Spray granulation Defoaming the prepared aluminum titanate ceramic slurry, and then spray granulating it to make aluminum titanate ceramic powder, which is then aged for later use; Defoaming treatment can prevent bubbles in the slurry from affecting the quality of the powder; spray granulation can convert the slurry into powder with uniform particle size, which is convenient for subsequent molding operations; controlling the moisture content and aging process of the powder can improve the process performance of the powder and enhance the quality of the molded body.

[0007] S3: Isostatic Pressing The aged ceramic powder is pressed into an aluminum titanate ceramic launder green body, and the pressed green body is dried to release the stress of the ceramic green body; Isostatic pressing enables the powder to form a flow channel green body under the condition of uniform pressure in all directions, ensuring uniform density and dense structure of the green body; drying in the drying room removes moisture from the green body and releases stress to prevent deformation, cracking and other defects in the green body during subsequent processing or use.

[0008] S4: Aluminum titanate ceramic launder sintering The aluminum titanate ceramic launder green body is subjected to heating, heat preservation and cooling processes; S5: Subsequent processing and assembly The fired aluminum titanate launder is processed and bonded into the designed shape, and then filled with insulation material and installed with a metal shell to produce the aluminum titanate ceramic launder.

[0009] Furthermore, in S1, the raw materials include 35-60 parts by mass of aluminum oxide, 25-40 parts by mass of titanium dioxide, 15-35 parts by mass of mullite, 1-5 parts by mass of magnesium oxide, 1-5 parts by mass of yttrium oxide, 1-3 parts by mass of ammonium polyacrylate, and 1-2 parts by mass of PVA, and are ball milled in a ratio of material, ball, and water = 1:2:1 to prepare aluminum titanate ceramic slurry; Furthermore, the ball milling is specifically performed by using a stirred mill for 20-30 hours.

[0010] Furthermore, the alumina is α-alumina powder, D50≤2 microns, purity 99.9%; The titanium dioxide is anatase powder with a D50 of ≤ 2 microns and a purity of 99%; The mullite is fused mullite powder with a D50 of ≤3 microns; The magnesium oxide is chemically pure magnesium oxide powder with a D50 of ≤1 micron; The yttrium oxide is chemically pure yttrium oxide powder with D50≤1 micron.

[0011] Furthermore, in S2, the prepared aluminum titanate ceramic slurry is defoamed with a defoaming agent.

[0012] Furthermore, the step S2 further includes controlling the moisture content of the aluminum titanate ceramic powder to 1-1.5% after the powder is prepared, and then aging the powder for later use.

[0013] Furthermore, the S3 specifically includes loading the aged ceramic powder into an isostatic pressing mold and sealing it, placing it in an isostatic press and pressurizing it to 200 MPa to press out an aluminum titanate ceramic flow trough green body, taking out the formed green body, and placing it in a 50°C drying room for drying, while releasing the stress of the ceramic green body.

[0014] Furthermore, the S4 specifically includes heating the aluminum titanate ceramic launder green body at a heating rate of 40°C / hour, slowly heating it between 200-350°C for 5 hours, then continuing to heat it to 1550-1570°C, keeping it warm for 5 hours, and finally cooling it to room temperature.

[0015] Furthermore, the aluminum titanate ceramic launder green body is placed in a gas-fired shuttle kiln for heating and heat preservation processes.

[0016] Furthermore, the S5 specifically includes processing the fired aluminum titanate flow trough with a precision engraving machine to form the mortise and tenon structure of each flow trough, bonding the flow trough into the designed shape with nano-aluminum sol according to the flow trough drawing, filling the insulation material according to the drawing, installing the metal shell, and making the aluminum titanate ceramic flow trough.

[0017] The beneficial effects of the present invention are 1. The service life of traditional castable troughs is generally only about one year. Frequent replacement not only increases costs but also affects production continuity. The process of the present invention and the aluminum titanate ceramic trough thereof are not wetted by the aluminum alloy melt and are not corroded by it, which greatly extends the service life of the trough, reduces the replacement frequency, ensures the continuity of the production process, and reduces the cost of use. 2. The castable trough is easily corroded by the aluminum alloy melt, which will contaminate the aluminum alloy melt, affecting the quality of the final product, causing defects or even scrapping of the product. The process of the present invention combined with the aluminum titanate ceramic trough will not contaminate the aluminum alloy melt, thus ensuring product quality from the source and reducing product losses caused by melt contamination; 3. The production cost is effectively reduced in the following aspects. On the one hand, the service life of the aluminum titanate ceramic runner is extended, which reduces the replacement cost of the runner. On the other hand, there is no need to spray expensive boron nitride coating before use, as is the case with castable runners, which reduces material costs. At the same time, it also reduces the professional equipment and personnel costs required for spraying operations, as well as the production downtime costs caused by shutting down for runner replacement. 4. In the prior art, the surface of the castable trough is easily adhered to aluminum and must be cleaned before each use, which consumes a lot of manpower and time, and requires special tools and chemicals. The labor intensity is high and the production efficiency is low. However, the aluminum titanate ceramic in the present invention has a low thermal expansion coefficient and does not wet with aluminum alloy melt, so the surface is not easily adhered to aluminum. It is easy to clean after each use, reducing the labor intensity of the operator and improving production efficiency. 5. Through a series of process steps such as precise batching, sufficient ball milling, spray granulation, isostatic pressing, specific sintering system and subsequent reasonable processing and assembly, the aluminum titanate ceramic flow trough can obtain good crystal structure and performance, improve the strength, hardness and chemical stability of the ceramic, and better meet the use needs of the aluminum casting processing industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the mold in the present invention.

[0019] Figure 2 It is a structural diagram of another mold.

[0020] Figure 3 This is a schematic diagram of an aluminum titanate lined flow channel (flow channel drawing). DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and examples: In the description of the present invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0023] Aluminum titanate ceramic troughs are not wetted by aluminum alloy melts and are not corroded by aluminum alloy melts. Boron nitride coating does not need to be sprayed before use. Aluminum titanate ceramics have a low thermal expansion coefficient and are not wetted by aluminum alloy melts. Therefore, the surface of the aluminum titanate trough is not easy to stick to aluminum and is easy to clean after each use. Figures 1 to 3 As shown, the present invention includes the following embodiments: Example

[0024] A method for producing an aluminum titanate ceramic launder comprises the following steps: S1: mixing the raw materials to complete the batching, and ball-milling the raw materials after the batching to prepare aluminum titanate ceramic slurry; Through precise batching and sufficient ball milling, various raw materials are evenly mixed, laying the foundation for the subsequent formation of aluminum titanate ceramics with good performance, ensuring that the various performance indicators of the ceramics meet the requirements; S2: Spray granulation Defoaming the prepared aluminum titanate ceramic slurry, and then spray granulating it to make aluminum titanate ceramic powder, which is then aged for later use; Defoaming treatment can prevent bubbles in the slurry from affecting the quality of the powder; spray granulation can convert the slurry into powder with uniform particle size, which is convenient for subsequent molding operations; controlling the moisture content and aging process of the powder can improve the process performance of the powder and enhance the quality of the molded body.

[0025] S3: Isostatic Pressing The aged ceramic powder is pressed into an aluminum titanate ceramic launder green body, and the pressed green body is dried to release the stress of the ceramic green body; Isostatic pressing enables the powder to form a flow channel green body under the condition of uniform pressure in all directions, ensuring uniform density and dense structure of the green body; drying in the drying room removes moisture from the green body and releases stress to prevent deformation, cracking and other defects in the green body during subsequent processing or use.

[0026] S4: Aluminum titanate ceramic launder sintering The aluminum titanate ceramic launder green body is subjected to heating, heat preservation and cooling processes; Through a specific heating, insulation and cooling system, a series of physical and chemical changes occur in the aluminum titanate ceramic green body, such as grain growth, pore elimination, component diffusion, etc., thereby obtaining a good crystal structure and performance, and improving the strength, hardness and chemical stability of the ceramic.

[0027] S5: Subsequent processing and assembly The fired aluminum titanate launder is processed and bonded into the designed shape, and then filled with insulation material and installed with a metal shell to produce the aluminum titanate ceramic launder.

[0028] Example 2 A method for producing an aluminum titanate ceramic launder comprises the following steps: S1: mixing the raw materials to complete the batching, and ball-milling the raw materials after the batching to prepare aluminum titanate ceramic slurry; In this embodiment, the raw materials include 35-60 parts by mass of aluminum oxide, 25-40 parts by mass of titanium dioxide, 15-35 parts by mass of mullite, 1-5 parts by mass of magnesium oxide, 1-5 parts by mass of yttrium oxide, 1-3 parts by mass of ammonium polyacrylate, and 1-2 parts by mass of PVA, and are ball milled in a ratio of material, ball, and water = 1:2:1 to prepare aluminum titanate ceramic slurry; Through precise batching and sufficient ball milling, various raw materials are evenly mixed, laying the foundation for the subsequent formation of aluminum titanate ceramics with good performance, ensuring that the various performance indicators of the ceramics meet the requirements; S2: Spray granulation Defoaming the prepared aluminum titanate ceramic slurry, and then spray granulating it to make aluminum titanate ceramic powder, which is then aged for later use; Defoaming treatment can prevent bubbles in the slurry from affecting the quality of the powder; spray granulation can convert the slurry into powder with uniform particle size, which is convenient for subsequent molding operations; controlling the moisture content and aging process of the powder can improve the process performance of the powder and enhance the quality of the molded body.

[0029] S3: Isostatic Pressing The aged ceramic powder is pressed into an aluminum titanate ceramic launder green body, and the pressed green body is dried to release the stress of the ceramic green body; Isostatic pressing enables the powder to form a flow channel green body under the condition of uniform pressure in all directions, ensuring uniform density and dense structure of the green body; drying in the drying room removes moisture from the green body and releases stress to prevent deformation, cracking and other defects in the green body during subsequent processing or use.

[0030] S4: Aluminum titanate ceramic launder sintering The aluminum titanate ceramic launder green body is subjected to heating, heat preservation and cooling processes; Through a specific heating, insulation and cooling system, a series of physical and chemical changes occur in the aluminum titanate ceramic green body, such as grain growth, pore elimination, component diffusion, etc., thereby obtaining a good crystal structure and performance, and improving the strength, hardness and chemical stability of the ceramic.

[0031] S5: Subsequent processing and assembly The fired aluminum titanate launder is processed and bonded into the designed shape, and then filled with insulation material and installed with a metal shell to produce the aluminum titanate ceramic launder.

[0032] Example 3 A method for producing an aluminum titanate ceramic launder comprises the following steps: S1: mixing the raw materials to complete the batching, and ball-milling the raw materials after the batching to prepare aluminum titanate ceramic slurry; In this embodiment, the raw materials include 35-60 parts by mass of aluminum oxide, 25-40 parts by mass of titanium dioxide, 15-35 parts by mass of mullite, 1-5 parts by mass of magnesium oxide, 1-5 parts by mass of yttrium oxide, 1-3 parts by mass of ammonium polyacrylate, and 1-2 parts by mass of PVA. Ball milling is performed in a ratio of material, ball, and water = 1:2:1 to prepare aluminum titanate ceramic slurry; the ball milling is specifically performed using a stirred mill for 20-30 hours.

[0033] The alumina is α-alumina powder, D50≤2 microns, purity 99.9%; The titanium dioxide is anatase powder with a D50 of ≤ 2 microns and a purity of 99%; The mullite is fused mullite powder with a D50 of ≤3 microns; The magnesium oxide is chemically pure magnesium oxide powder with a D50 of ≤1 micron; The yttrium oxide is chemically pure yttrium oxide powder with D50≤1 micron.

[0034] Through precise batching and sufficient ball milling, various raw materials are evenly mixed, laying the foundation for the subsequent formation of aluminum titanate ceramics with good performance, ensuring that the various performance indicators of the ceramics meet the requirements; S2: Spray granulation Defoaming the prepared aluminum titanate ceramic slurry, and then spray granulating it to make aluminum titanate ceramic powder, which is then aged for later use; Defoaming treatment can prevent bubbles in the slurry from affecting the quality of the powder; spray granulation can convert the slurry into powder with uniform particle size, which is convenient for subsequent molding operations; controlling the moisture content and aging process of the powder can improve the process performance of the powder and enhance the quality of the molded body.

[0035] S3: Isostatic Pressing The aged ceramic powder is pressed into an aluminum titanate ceramic launder green body, and the pressed green body is dried to release the stress of the ceramic green body; Isostatic pressing enables the powder to form a flow channel green body under the condition of uniform pressure in all directions, ensuring uniform density and dense structure of the green body; drying in the drying room removes moisture from the green body and releases stress to prevent deformation, cracking and other defects in the green body during subsequent processing or use.

[0036] S4: Aluminum titanate ceramic launder sintering The aluminum titanate ceramic launder green body is subjected to heating, heat preservation and cooling processes; Through a specific heating, insulation and cooling system, a series of physical and chemical changes occur in the aluminum titanate ceramic green body, such as grain growth, pore elimination, component diffusion, etc., thereby obtaining a good crystal structure and performance, and improving the strength, hardness and chemical stability of the ceramic.

[0037] S5: Subsequent processing and assembly The fired aluminum titanate launder is processed and bonded into the designed shape, and then filled with insulation material and installed with a metal shell to produce the aluminum titanate ceramic launder.

[0038] Example 4 A method for producing an aluminum titanate ceramic launder comprises the following steps: S1: mixing the raw materials to complete the batching, and ball-milling the raw materials after the batching to prepare aluminum titanate ceramic slurry; In this embodiment, the raw materials include 35-60 parts by mass of aluminum oxide, 25-40 parts by mass of titanium dioxide, 15-35 parts by mass of mullite, 1-5 parts by mass of magnesium oxide, 1-5 parts by mass of yttrium oxide, 1-3 parts by mass of ammonium polyacrylate, and 1-2 parts by mass of PVA. Ball milling is performed in a ratio of material, ball, and water = 1:2:1 to prepare aluminum titanate ceramic slurry; the ball milling is specifically performed using a stirred mill for 20-30 hours.

[0039] The alumina is α-alumina powder, D50≤2 microns, purity 99.9%; The titanium dioxide is anatase powder with a D50 of ≤ 2 microns and a purity of 99%; The mullite is fused mullite powder with a D50 of ≤3 microns; The magnesium oxide is chemically pure magnesium oxide powder with a D50 of ≤1 micron; The yttrium oxide is chemically pure yttrium oxide powder with D50≤1 micron.

[0040] Through precise batching and sufficient ball milling, various raw materials are evenly mixed, laying the foundation for the subsequent formation of aluminum titanate ceramics with good performance, ensuring that the various performance indicators of the ceramics meet the requirements; S2: Spray granulation The prepared aluminum titanate ceramic slurry is defoamed and then spray granulated to prepare aluminum titanate ceramic powder, the moisture content of which is controlled at 1-1.5%, and then aged for later use. In this embodiment, the prepared aluminum titanate ceramic slurry is defoamed with a defoaming agent.

[0041] Defoaming treatment can prevent bubbles in the slurry from affecting the quality of the powder; spray granulation can convert the slurry into powder with uniform particle size, which is convenient for subsequent molding operations; controlling the moisture content and aging process of the powder can improve the process performance of the powder and enhance the quality of the molded body.

[0042] S3: Isostatic Pressing The aged ceramic powder is pressed into an aluminum titanate ceramic launder green body, and the pressed green body is dried to release the stress of the ceramic green body; Isostatic pressing enables the powder to form a flow channel green body under the condition of uniform pressure in all directions, ensuring uniform density and dense structure of the green body; drying in the drying room removes moisture from the green body and releases stress to prevent deformation, cracking and other defects in the green body during subsequent processing or use.

[0043] S4: Aluminum titanate ceramic launder sintering The aluminum titanate ceramic launder green body is subjected to heating, heat preservation and cooling processes; Through a specific heating, insulation and cooling system, a series of physical and chemical changes occur in the aluminum titanate ceramic green body, such as grain growth, pore elimination, component diffusion, etc., thereby obtaining a good crystal structure and performance, and improving the strength, hardness and chemical stability of the ceramic.

[0044] S5: Subsequent processing and assembly The fired aluminum titanate launder is processed and bonded into the designed shape, and then filled with insulation material and installed with a metal shell to produce the aluminum titanate ceramic launder.

[0045] Example 5 A method for producing an aluminum titanate ceramic launder comprises the following steps: S1: mixing the raw materials to complete the batching, and ball-milling the raw materials after the batching to prepare aluminum titanate ceramic slurry; In this embodiment, the raw materials include 35-60 parts by mass of aluminum oxide, 25-40 parts by mass of titanium dioxide, 15-35 parts by mass of mullite, 1-5 parts by mass of magnesium oxide, 1-5 parts by mass of yttrium oxide, 1-3 parts by mass of ammonium polyacrylate, and 1-2 parts by mass of PVA. Ball milling is performed in a ratio of material, ball, and water = 1:2:1 to prepare aluminum titanate ceramic slurry; the ball milling is specifically performed using a stirred mill for 20-30 hours.

[0046] The alumina is α-alumina powder, D50≤2 microns, purity 99.9%; The titanium dioxide is anatase powder with a D50 of ≤ 2 microns and a purity of 99%; The mullite is fused mullite powder with a D50 of ≤3 microns; The magnesium oxide is chemically pure magnesium oxide powder with a D50 of ≤1 micron; The yttrium oxide is chemically pure yttrium oxide powder with D50≤1 micron.

[0047] Through precise batching and sufficient ball milling, various raw materials are evenly mixed, laying the foundation for the subsequent formation of aluminum titanate ceramics with good performance, ensuring that the various performance indicators of the ceramics meet the requirements; S2: Spray granulation The prepared aluminum titanate ceramic slurry is defoamed and then spray granulated to prepare aluminum titanate ceramic powder, the moisture content of which is controlled at 1-1.5%, and then aged for later use. In this embodiment, the prepared aluminum titanate ceramic slurry is defoamed with a defoaming agent.

[0048] Defoaming treatment can prevent bubbles in the slurry from affecting the quality of the powder; spray granulation can convert the slurry into powder with uniform particle size, which is convenient for subsequent molding operations; controlling the moisture content and aging process of the powder can improve the process performance of the powder and enhance the quality of the molded body.

[0049] S3: Isostatic Pressing The aged ceramic powder is pressed into an aluminum titanate ceramic launder green body, and the pressed green body is dried, and the ceramic green body is stress-released at the same time; specifically, the aged ceramic powder is loaded into an isostatic pressing mold 1 and sealed, and then placed in an isostatic press and pressurized to 200 MPa to press out an aluminum titanate ceramic launder green body, and after the formed green body is taken out, it is placed in a drying oven at 50°C to release the stress of the ceramic green body; isostatic pressing can form a launder green body under the condition of uniform pressure in all directions, ensuring that the green body has uniform density and dense structure; drying in the drying oven removes moisture from the green body, and releasing stress can prevent the green body from deformation, cracking and other defects during subsequent processing or use.

[0050] S4: Aluminum titanate ceramic launder sintering The aluminum titanate ceramic launder green body is placed in a gas-fired shuttle kiln for heating, heat preservation and cooling. The specific process includes: The aluminum titanate ceramic launder green body is heated at a heating rate of 40°C / hour, slowly heated between 200-350°C for 5 hours, then continued to heat to 1550-1570°C, kept at this temperature for 5 hours, and finally cooled to room temperature.

[0051] Through a specific heating, insulation and cooling system, a series of physical and chemical changes occur in the aluminum titanate ceramic green body, such as grain growth, pore elimination, component diffusion, etc., thereby obtaining a good crystal structure and performance, and improving the strength, hardness and chemical stability of the ceramic.

[0052] S5: Subsequent processing and assembly The fired aluminum titanate flow channel is processed and bonded into the designed shape, and then filled with insulation material and installed with a metal shell to produce the aluminum titanate ceramic flow channel; this step is specifically as follows: the fired aluminum titanate flow channel is processed with a precision engraving machine to form the mortise and tenon structure of each flow channel, and the flow channel is bonded into the designed shape with nano-aluminum sol according to the aluminum titanate lined flow channel 2 (flow channel drawing), and the insulation material is filled according to the drawing and the metal shell is installed to produce the aluminum titanate ceramic flow channel.

[0053] In the present invention, embodiment 5 is the best embodiment.

[0054] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A method for producing an aluminum titanate ceramic launder, characterized in that: The following steps are involved: S1: mixing the raw materials to complete the batching, and ball-milling the raw materials after the batching to prepare aluminum titanate ceramic slurry; S2: Spray granulation Defoaming the prepared aluminum titanate ceramic slurry, and then spray granulating it to make aluminum titanate ceramic powder, which is then aged for later use; S3: Isostatic Pressing The aged ceramic powder is pressed into an aluminum titanate ceramic launder green body, and the pressed green body is dried to release the stress of the ceramic green body; S4: Aluminum titanate ceramic launder sintering The aluminum titanate ceramic launder green body is subjected to heating, heat preservation and cooling processes; S5: Subsequent processing and assembly The fired aluminum titanate launder is processed and bonded into the designed shape, and then filled with insulation material and installed with a metal shell to produce the aluminum titanate ceramic launder.

2. The method for producing an aluminum titanate ceramic launder according to claim 1, wherein: In S1, the raw materials include 35-60 parts by mass of aluminum oxide, 25-40 parts by mass of titanium dioxide, 15-35 parts by mass of mullite, 1-5 parts by mass of magnesium oxide, 1-5 parts by mass of yttrium oxide, 1-3 parts by mass of ammonium polyacrylate, and 1-2 parts by mass of PVA. Ball milling is performed in a ratio of material, ball, and water = 1:2:1 to prepare aluminum titanate ceramic slurry.

3. The method for producing an aluminum titanate ceramic launder according to claim 2, wherein: The ball milling is specifically performed by using a stirred mill for 20-30 hours.

4. The method for producing an aluminum titanate ceramic launder according to claim 3, wherein: The alumina is α-alumina powder, D50≤2 microns, purity 99.9%; The titanium dioxide is anatase powder with a D50 of ≤ 2 microns and a purity of 99%; The mullite is fused mullite powder with a D50 of ≤3 microns; The magnesium oxide is chemically pure magnesium oxide powder with a D50 of ≤1 micron; The yttrium oxide is chemically pure yttrium oxide powder with D50≤1 micron.

5. The method for producing an aluminum titanate ceramic launder according to claim 4, wherein: In the step S2, the prepared aluminum titanate ceramic slurry is defoamed with a defoaming agent.

6. The method for producing an aluminum titanate ceramic launder according to claim 5, wherein: Said S2 further includes controlling the moisture content of the aluminum titanate ceramic powder to 1-1.5% after the powder is prepared, and then aging the powder for later use.

7. The method for producing an aluminum titanate ceramic launder according to claim 6, wherein: Said S3 specifically comprises: loading the aged ceramic powder into an isostatic pressing mold (1) and sealing it, placing it into an isostatic press and pressurizing it to 200 MPa, pressing out an aluminum titanate ceramic launder green body, taking out the formed green body, and placing it into a drying room at 50°C for drying, while releasing the stress of the ceramic green body.

8. The method for producing an aluminum titanate ceramic launder according to claim 7, wherein: The S4 specifically includes heating the aluminum titanate ceramic launder green body at a heating rate of 40°C / hour, slowly heating it between 200-350°C for 5 hours, then continuing to heat it to 1550-1570°C, keeping it at that temperature for 5 hours, and finally cooling it to room temperature.

9. The method for producing an aluminum titanate ceramic launder according to claim 8, wherein: The aluminum titanate ceramic launder green body is placed in a gas-fired shuttle kiln for heating and heat preservation.

10. The method for producing an aluminum titanate ceramic launder according to claim 9, wherein: The S5 specifically includes processing the fired aluminum titanate flow channel with a precision engraving machine to form the mortise and tenon structure of each flow channel, bonding the flow channel into the designed shape with nano-aluminum sol according to the flow channel drawing, filling the insulation material according to the drawing, installing the metal shell, and making the aluminum titanate ceramic flow channel.

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