Vibration-molded low-heat-conductivity pool bottom large brick and preparation method thereof

Abstract

The invention discloses a vibration-molded low-heat-conductivity pool bottom large brick and a preparation method thereof, and belongs to the technical field of brick production, the vibration-molded low-heat-conductivity pool bottom large brick comprises the following components: light clay, mineral powder, porous mullite, alumina, alumina hollow spheres, aluminate cement and an auxiliary agent; by adopting a vibration molding technology and high-frequency vibration, molding of a mixed material is realized, the method can enable raw materials to be quickly distributed and dispersed in a mold in the high-frequency vibration process, the compactness of the materials in the whole brick can be effectively improved, all components in the material collide under the action of high-speed vibration, and the quality of the brick is improved. And some mixed oxides are adopted in the material of the brick body, so that the high-temperature-resistant effect of the finished brick can be improved, the thermal conductivity of the main body of the brick can be reduced, and the brick is a stable material of the bottom brick of the pool body, and the practical application effect of the whole method is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of brick production, and in particular relates to a vibration-formed low-heat-conductivity pool bottom large brick and a preparation method thereof. Background Art

[0002] Industrial kilns are equipment made of refractory materials, mainly used for calcining materials or firing products. They are widely used in many industries such as metallurgy, chemical industry, building materials, ceramics, glass, electronics, food, etc., and are indispensable and important equipment in industrial production. When producing the bricks at the bottom of industrial kilns, production preparation methods need to be applied.

[0003] A Chinese patent discloses (CN104529312A) a high-strength nickel slag brick with a large amount of admixture and a preparation method thereof. The nickel slag brick is prepared according to the following components and their mass percentages: 50-75 parts of water-quenched nickel slag, 12-25 parts of air-cooled nickel slag, 0-6 parts of sand, 6-9 parts of cement, 0.01-0.08% of the mass of cement as a water reducer, and 7-10 parts of water. The nickel slag consumption is large, reaching more than 75%, and the nickel slag resource utilization and environmental protection benefits are significant; the prepared nickel slag brick has high strength, meeting the requirements of MU20 non-sintered bricks, and can be used as an effective substitute for sintered bricks, reducing energy consumption and production costs, and having obvious energy-saving and consumption-reducing benefits; the molding and curing processes are simple, and it is easy to realize large-scale production, and the market prospects are broad. Although the current large brick preparation method can also complete the production and preparation of large bricks, it does not use vibration molding technology when forming the bricks, but instead uses pressing and other methods to achieve brick molding, resulting in low density of the components in the bricks, resulting in poor quality of the final product. In order to solve this problem, there is an urgent need for vibration-molded low thermal conductivity pool bottom large bricks and their preparation methods. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that although the current large brick preparation method can also complete the production and preparation of large bricks, it does not adopt vibration molding technology when forming bricks, but adopts pressing and other methods to achieve brick molding, resulting in low density of components in the bricks and poor quality of the final product. A vibration-molded low thermal conductivity pool bottom large brick and a preparation method thereof are proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme: vibration forming low thermal conductivity pool bottom large bricks, including the following components: light clay, mineral powder, porous mullite, alumina, alumina hollow balls, aluminate cement and additives.

[0006] As a further description of the above technical solution:

[0007] The weight proportions of the lightweight clay, mineral powder, porous mullite, alumina, hollow alumina spheres, aluminate cement and additives are: 8-10 parts, 3-5 parts, 1-2 parts, 4-6 parts, 2-5 parts and 1-3 parts, wherein the additives are binders, debonders, delayed-acting coagulants and stabilizers.

[0008] This article also discloses a method for preparing large bricks of a vibration-molded low thermal conductivity pool bottom, comprising the following steps:

[0009] S1. Take mineral powder, porous mullite, alumina and hollow alumina balls and place them in a grinding device, grind and sieve the mixture, perform strong magnetic iron removal during the sieving process, collect the ground material, place the collected ground material on an electronic scale, weigh it, and evenly divide it into three parts according to the weighing result;

[0010] S2, placing aluminate cement in a mixing device, adding excess water thereto, and stirring the cement for a period of time;

[0011] S3, wait for a while, introduce the evenly divided grinding material into the mixing device three times, and continue mixing for a while;

[0012] S4, controlling the amount of water added according to the state of the mixture;

[0013] S5, adding additives to the mixture successively, raising the mixing temperature and stirring for a period of time;

[0014] S6, adding lightweight clay to the mixture, mixing for a period of time, and then introducing the mixture into a vibration molding;

[0015] S7, setting the vibration frequency of the device and waiting for the formation of a dense embryo;

[0016] S8, removing the embryo from the mold and placing it in a kiln for firing;

[0017] S9, take out the finished product and wait for cooling;

[0018] S10. Precisely cut according to the designed size, polished on six sides, inspected, and packaged for shipment.

[0019] Furthermore, the method realizes the molding of the mixed material by adopting vibration molding technology and high-frequency vibration. The method can make the raw materials quickly distributed and dispersed in the mold during the high-frequency vibration process, which can effectively improve the density of the internal material of the whole brick. The various components in the material collide under the action of high-speed vibration, which can also ensure the fusion effect of the components in the material. In addition, some mixed oxides are used in the material of the brick body. These substances can not only improve the high temperature resistance of the finished bricks, but also reduce the thermal conductivity of the main body. They are stable materials for the bottom bricks of the pool body. The practical application effect of the overall method.

[0020] As a further description of the above technical solution:

[0021] In S1, mineral powder, porous mullite, alumina and hollow alumina balls are placed in a grinding device, the mixture is ground and sieved through a 120-140 mesh sieve, strong magnetic iron removal is performed simultaneously during the sieving process, and the ground material is collected, placed on an electronic scale, weighed, and evenly divided into three parts according to the weighing result.

[0022] As a further description of the above technical solution:

[0023] In S2, aluminate cement is placed in a mixing device, excess water is added thereto, and the aluminate cement is stirred for 10-15 minutes.

[0024] As a further description of the above technical solution:

[0025] In S3, wait for 5-10 minutes, introduce the evenly divided grinding material into the mixing device three times, and the time interval between introductions is 3-5 minutes, and continue mixing for 15-20 minutes.

[0026] As a further description of the above technical solution:

[0027] In S4, the amount of water added is controlled according to the state of the mixture until the mixture becomes viscous, wherein after adding water, the total water content in the mixture is maintained at 1.2 times the content of the mixture.

[0028] As a further description of the above technical solution:

[0029] In S5, the additives are added to the mixture successively, the time interval of adding the additives is 2-3 minutes, and the order of adding the additives is the arrangement of binder, debonder, delayed coagulant and stabilizer. The mixing temperature is increased to 50-60° C. and stirred for 25-30 minutes.

[0030] As a further description of the above technical solution:

[0031] In S6, light clay is added to the mixture, and after mixing for 5-10 minutes, the mixture is introduced into a vibration molding machine.

[0032] As a further description of the above technical solution:

[0033] In the above S7, the vibration frequency of the equipment is set to 10000-12000 times / min, and a dense embryo body is waited to be formed. In the above S8, the embryo body is demoulded, removed from the mold, placed in a kiln for drying for 2-3 days, and then placed in the kiln for firing for 25 days before being taken out of the kiln.

[0034] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0035] This method uses vibration molding technology and high-frequency vibration to achieve the molding of the mixed material. This method can make the raw materials quickly distribute and disperse in the mold during the high-frequency vibration process, which can effectively improve the density of the internal material of the whole brick. The various components in the material collide under the action of high-speed vibration, which can also ensure the fusion effect of the components in the material. In addition, some mixed oxides are used in the material of the brick body. These substances can not only improve the high temperature resistance of the finished brick, but also reduce the thermal conductivity of its main body. They are stable materials for the bottom bricks of the pool body. The actual application effect of the overall method. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The present invention is a flow chart of the preparation method of large bricks of vibration-formed low thermal conductivity pool bottom. DETAILED DESCRIPTION

[0037] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example 1

[0039] See also Figure 1 The present invention provides a technical solution: vibration-formed low thermal conductivity pool bottom large bricks, including the following components: lightweight clay, mineral powder, porous mullite, alumina, alumina hollow balls, aluminate cement and additives, the weight proportions being 8 parts, 3 parts, 1 part, 4 parts, 2 parts and 1 part, wherein the additives are binders, debonders, delayed-acting coagulants and stabilizers.

[0040] This article also discloses a method for preparing large bricks of a vibration-molded low thermal conductivity pool bottom, comprising the following steps:

[0041] S1. Take mineral powder, porous mullite, alumina and hollow alumina balls and place them in a grinding device, grind the mixture, and pass it through a 120-mesh sieve. During the sieving process, strong magnetic iron removal is performed simultaneously, and the ground material is collected, and the collected ground material is placed on an electronic scale and weighed. According to the weighing result, it is evenly divided into three parts;

[0042] S2, placing aluminate cement in a mixing device, adding excess water thereto, and stirring the cement for 10 minutes;

[0043] S3, wait for 5 minutes, introduce the evenly divided grinding material into the mixing device three times, and the time interval between introductions is 3 minutes, and continue mixing for 15 minutes;

[0044] S4, according to the state of the mixture, the amount of water added is controlled until the mixture is in a viscous state, wherein after adding water, the total water content in the mixture is maintained at 1.2 times the content of the mixture;

[0045] S5. Add additives to the mixture successively, with the time interval of adding additives being 2 minutes. Add additives in the order of binder, degumming agent, delayed-acting coagulant and stabilizer, increase the mixing temperature to 50°C and stir for 25 minutes;

[0046] S6. Add lightweight clay to the mixture, mix for 5 minutes, and then introduce the mixture into a vibration mold;

[0047] S7. Set the vibration frequency of the equipment to 10,000 times / min and wait for the formation of a dense embryo;

[0048] S8, demoulding the embryo, removing it from the mold, placing it in a kiln to dry for 2 days, and then placing it in the kiln to burn for 25 days before taking it out of the kiln;

[0049] S9, take out the finished product and wait for cooling;

[0050] S10. Precisely cut according to the designed size, polished on six sides, inspected, and packaged for shipment.

[0051] In this embodiment, the method adopts vibration molding technology and high-frequency vibration to achieve the molding of the mixed material. This method can make the raw materials quickly distributed and dispersed in the mold during the high-frequency vibration process, which can effectively improve the density of the internal material of the whole brick. In addition, the various components in the material collide with each other under the action of high-speed vibration, which can also ensure the fusion effect of the components in the material.

[0052] Example 2

[0053] See also Figure 1 The present invention provides a technical solution: vibration-formed low thermal conductivity pool bottom large bricks, including the following components: lightweight clay, mineral powder, porous mullite, alumina, alumina hollow balls, aluminate cement and additives, the weight proportions being: 9 parts, 4 parts, 1 part, 5 parts, 4 parts and 2 parts, wherein the additives are binders, debonders, delayed-acting coagulants and stabilizers.

[0054] This article also discloses a method for preparing large bricks of a vibration-molded low thermal conductivity pool bottom, comprising the following steps:

[0055] S1. Take mineral powder, porous mullite, alumina and hollow alumina balls and place them in a grinding device, grind the mixture, and pass it through a 130-mesh sieve. During the sieving process, strong magnetic iron removal is performed simultaneously, and the ground material is collected, and the collected ground material is placed on an electronic scale and weighed. According to the weighing result, it is evenly divided into three parts;

[0056] S2. Place aluminate cement in a mixing device, add excess water into the mixing device, and stir the mixture for 12 minutes;

[0057] S3, wait for 5-10 minutes, introduce the evenly divided grinding material into the mixing device three times, and the time interval between introductions is 4 minutes, and continue mixing for 17 minutes;

[0058] S4, according to the state of the mixture, the amount of water added is controlled until the mixture is in a viscous state, wherein after adding water, the total water content in the mixture is maintained at 1.2 times the content of the mixture;

[0059] S5. Add additives to the mixture successively, with the time interval of adding additives being 2 minutes. Add additives in the order of binder, degumming agent, delayed-acting coagulant and stabilizer, increase the mixing temperature to 55°C and stir for 28 minutes;

[0060] S6. Add lightweight clay to the mixture, mix for 8 minutes, and then introduce the mixture into a vibration molding machine;

[0061] S7, setting the vibration frequency of the equipment to 800 times / min, and waiting for the formation of a dense embryo;

[0062] S8, demoulding the embryo, removing it from the mold, placing it in a kiln to dry for 3 days, and then placing it in the kiln to burn for 25 days before taking it out of the kiln;

[0063] S9, take out the finished product and wait for cooling;

[0064] S10. Precisely cut according to the designed size, polished on six sides, inspected, and packaged for shipment.

[0065] In this embodiment, some mixed oxides are used in the material of the brick body. These substances can not only improve the high temperature resistance of the finished bricks, but also reduce the thermal conductivity of the main body. They are stable materials for the bottom bricks of the pool body and the practical application effect of the overall method.

[0066] Example 3

[0067] See also Figure 1The present invention provides a technical solution: vibration-formed low thermal conductivity pool bottom large bricks, including the following components: lightweight clay, mineral powder, porous mullite, alumina, alumina hollow balls, aluminate cement and additives, the weight proportions are: 10 parts, 5 parts, 2 parts, 6 parts, 5 parts and 3 parts, wherein the additives are binders, debonders, delayed-acting coagulants and stabilizers.

[0068] This article also discloses a method for preparing a large brick of a vibration-molded low thermal conductivity pool bottom, comprising the following steps:

[0069] S1. Take mineral powder, porous mullite, alumina and hollow alumina balls and place them in a grinding device, grind the mixture, and pass it through a 140-mesh sieve. During the sieving process, strong magnetic iron removal is performed simultaneously, and the ground material is collected, and the collected ground material is placed on an electronic scale and weighed. According to the weighing result, it is evenly divided into three parts;

[0070] S2, placing aluminate cement in a mixing device, adding excess water thereto, and stirring the cement for 15 minutes;

[0071] S3, wait for 8 minutes, introduce the evenly divided grinding material into the mixing device three times, and the time interval between introductions is 5 minutes, and continue mixing for 20 minutes;

[0072] S4. Control the amount of water added according to the state of the mixture until the mixture is in a viscous state, wherein after adding water, the total water content in the mixture is maintained at 1.2 times the content of the mixture;

[0073] S5. Add additives to the mixture successively, with the time interval of adding additives being 3 minutes. Add additives in the order of binder, degumming agent, delayed-acting coagulant and stabilizer, increase the mixing temperature to 55°C and stir for 30 minutes;

[0074] S6. Add lightweight clay to the mixture, mix for 10 minutes, and then introduce the mixture into a vibration molding machine;

[0075] S7, setting the vibration frequency of the equipment to 500 times / min, and waiting for the formation of a dense embryo;

[0076] S8, demoulding the embryo, removing it from the mold, placing it in a kiln to dry for 2 days, and then placing it in the kiln to burn for 25 days before taking it out of the kiln;

[0077] S9, take out the finished product and wait for cooling;

[0078] S10. Precisely cut according to the designed size, polished on six sides, inspected, and packaged for shipment.

[0079] Example 4

[0080] See also Figure 1The present invention provides a technical solution: vibration-formed low thermal conductivity pool bottom large bricks, including the following components: lightweight clay, mineral powder, porous mullite, alumina, alumina hollow balls, aluminate cement and additives, the weight proportions are: 10 parts, 5 parts, 2 parts, 6 parts, 5 parts and 3 parts, wherein the additives are binders, debonders, delayed-acting coagulants and stabilizers.

[0081] This article also discloses a method for preparing a large brick of a vibration-molded low thermal conductivity pool bottom, comprising the following steps:

[0082] S1. Take mineral powder, porous mullite, alumina and hollow alumina balls and place them in a grinding device, grind the mixture, and pass it through a 140-mesh sieve. During the sieving process, strong magnetic iron removal is performed simultaneously, and the ground material is collected, and the collected ground material is placed on an electronic scale and weighed. According to the weighing result, it is evenly divided into three parts;

[0083] S2, placing aluminate cement in a mixing device, adding excess water thereto, and stirring the cement for 15 minutes;

[0084] S3, wait for 10 minutes, introduce the evenly divided grinding material into the mixing device three times, and the time interval between introductions is 5 minutes, and continue mixing for 20 minutes;

[0085] S4. Control the amount of water added according to the state of the mixture until the mixture is in a viscous state, wherein after adding water, the total water content in the mixture is maintained at 1.2 times the content of the mixture;

[0086] S5. Add additives to the mixture successively, with the time interval of adding additives being 3 minutes. Add additives in the order of binder, debonder, delayed-acting coagulant and stabilizer, increase the mixing temperature to 60°C and stir for 30 minutes;

[0087] S6. Add lightweight clay to the mixture, mix for 8 minutes, and then introduce the mixture into a vibration molding machine;

[0088] S7, setting the vibration frequency of the equipment to 600 times / min, and waiting for the formation of a dense embryo;

[0089] S8, demoulding the embryo, removing it from the mold, placing it in a kiln to dry for 3 days, and then placing it in the kiln to burn for 25 days before taking it out of the kiln;

[0090] S9, take out the finished product and wait for cooling;

[0091] S10. Precisely cut according to the designed size, polished on six sides, inspected, and packaged for shipment.

[0092] In this embodiment, the method adopts vibration molding technology and high-frequency vibration to achieve the molding of the mixed material. This method can make the raw materials quickly distributed and dispersed in the mold during the high-frequency vibration process, which can effectively improve the density of the internal material of the whole brick. The various components in the material collide under the action of high-speed vibration, which can also ensure the fusion effect of the components in the material. In addition, some mixed oxides are used in the material of the brick body. These substances can not only improve the high temperature resistance of the finished bricks, but also reduce the thermal conductivity of the main body. They are stable materials for the bottom bricks of the pool body. The actual application effect of the overall method.

[0093] In Examples 1-4, the technical standards for preparing finished bricks are as follows:

[0094]

[0095] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Vibration-molded low thermal conductivity pool bottom bricks, characterized by: The invention comprises the following ingredients: light clay, mineral powder, porous mullite, alumina, alumina hollow spheres, aluminate cement and additives.

2. The vibration-formed low thermal conductivity pool bottom large brick according to claim 1 is characterized in that: The weight proportions of the lightweight clay, mineral powder, porous mullite, alumina, hollow alumina spheres, aluminate cement and additives are: 8-10 parts, 3-5 parts, 1-2 parts, 4-6 parts, 2-5 parts and 1-3 parts, wherein the additives are binders, debonders, delayed-acting coagulants and stabilizers.

3. A method for preparing large bricks of a vibration-molded low thermal conductivity pool bottom, characterized in that: The steps include: S1. Take mineral powder, porous mullite, alumina and hollow alumina balls and place them in a grinding device, grind and sieve the mixed materials, perform strong magnetic iron removal during the sieving process, collect the ground materials, place the collected ground materials on an electronic scale, weigh them, and evenly divide them into three parts according to the weighing results; S2, placing aluminate cement in a mixing device, adding excess water thereto, and stirring the cement for a period of time; S3, waiting for a while, introducing the evenly divided grinding material into the mixing device three times, and continuing to mix for a while; S4, controlling the amount of water added according to the state of the mixture; S5, adding additives to the mixture successively, raising the mixing temperature and stirring for a period of time; S6, adding lightweight clay to the mixture, mixing for a period of time, and then introducing the mixture into a vibration molding; S7, setting the vibration frequency of the device and waiting for the formation of a dense embryo; S8, removing the embryo from the mold and placing it in a kiln for firing; S9, take out the finished product and wait for cooling; S10. Precisely cut according to the designed size, polished on six sides, inspected, and packaged for shipment.

4. The method for preparing large bricks of vibration-molded low thermal conductivity pool bottom according to claim 3 is characterized in that: In S1, mineral powder, porous mullite, alumina and hollow alumina balls are placed in a grinding device, the mixture is ground and sieved through a 120-140 mesh screen, and the ground material is collected, the collected ground material is placed on an electronic scale, weighed, and evenly divided into three parts according to the weighing result.

5. The method for preparing large bricks of vibration-molded low thermal conductivity pool bottom according to claim 3, characterized in that: In S2, aluminate cement is placed in a mixing device, excess water is added thereto, and the aluminate cement is stirred for 10-15 minutes.

6. The method for preparing large bricks of vibration-molded low thermal conductivity pool bottom according to claim 3, characterized in that: In S3, wait for 5-10 minutes, introduce the evenly divided grinding material into the mixing device three times, and the time interval between introductions is 3-5 minutes, and continue mixing for 15-20 minutes.

7. The method for preparing large bricks of vibration-molded low thermal conductivity pool bottom according to claim 3, characterized in that: In S4, the amount of water added is controlled according to the state of the mixture until the mixture becomes viscous, wherein after adding water, the total water content in the mixture is maintained at 1.2 times the content of the mixture.

8. The method for preparing large bricks of vibration-molded low thermal conductivity pool bottom according to claim 3, characterized in that: In S5, the additives are added to the mixture successively, the time interval of adding the additives is 2-3 minutes, and the order of adding the additives is the arrangement of binder, debonder, delayed coagulant and stabilizer. The mixing temperature is increased to 50-60° C. and stirred for 25-30 minutes.

9. The method for preparing large bricks of vibration-molded low thermal conductivity pool bottom according to claim 3, characterized in that: In S6, light clay is added to the mixture, and after mixing for 5-10 minutes, the mixture is introduced into a vibration molding machine.

10. The method for preparing large bricks of vibration-molded low thermal conductivity pool bottom according to claim 3, characterized in that: In the above S7, the vibration frequency of the equipment is set to 10000-12000 times / min, and a dense embryo body is waited to be formed. In the above S8, the embryo body is demoulded, removed from the mold, placed in a kiln for drying for 2-3 days, and then placed in the kiln for firing for 25 days before being taken out of the kiln.

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