A light-weight heat-insulating brick with uniformly distributed pores and a preparation process thereof

Abstract

The application discloses a kind of pore uniform distribution type light heat insulation bricks and preparation process thereof, including positioning main frame, positioning column, internal solidification layer, top encapsulation layer;The application changes the operation structure and process of traditional raw materials unified stirring, integral pouring and firing forming, the application is prepared by separate structure, including positioning main frame, positioning column, internal solidification layer, top encapsulation layer, by evenly inserting a plurality of burning loss spheres on positioning column, then respectively inserting positioning column on multiple plug-in slots below in positioning main frame interior, so that the burning loss spheres are evenly positioned in the interior of positioning main frame by multiple positioning columns, so that the positioning and dispersion of burning loss position are realized, and then the internal solidification layer and top encapsulation layer are filled, so that the uniform distribution of burning loss pore in structure is realized, the uniformity of heat insulation and light uniformity of structure are improved.

Description

Technical Field

[0001] This invention belongs to the field of lightweight insulating brick preparation technology, and particularly relates to a lightweight insulating brick with uniformly distributed pores and its preparation process. Background Technology

[0002] Lightweight insulating bricks have broad application prospects in the field of refractory insulation firing. In places requiring heat insulation and refractory applications, lightweight insulating bricks are often necessary. They greatly improve the convenience and efficiency of the work. The current manufacturing method for lightweight insulating bricks for heat insulation layers generally involves metering and adding mineral powders such as kaolin, alumina powder, bauxite, and kyanite powder into a mixer in a certain proportion. After thorough mixing with water and sawdust, a mixed raw material or slurry is formed. This mixture is then vacuum extruded or cast into a blank, dried, fired at high temperature, and cut and shaped into the required specifications. In order to improve the lightweight and heat insulation properties of heat-insulating bricks, expandable polystyrene foam balls are often added to the raw materials. After decomposition upon ignition, pores are generated inside the structure, which achieve the purpose of heat insulation and lightweight. However, because expandable polystyrene foam balls often float during the casting of the raw materials, the pores are concentrated in the upper layer of the structure, resulting in uneven pore distribution and affecting the uniformity of heat insulation. Therefore, it is necessary to upgrade and modify the existing structural process to improve the uniformity of pore distribution. Summary of the Invention

[0003] To address the shortcomings of the prior art, the present invention provides a lightweight heat-insulating brick with uniform pore distribution and good heat insulation effect, as well as its preparation process.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows: A lightweight thermal insulation brick with uniformly distributed pores includes a positioning main frame, positioning columns, an inner curing layer, and a top sealing layer. The positioning main frame has a structure that is closed at the bottom and all four sides and open at the top. Multiple positioning columns are uniformly installed inside the positioning main frame. The interior of the positioning main frame is filled with the inner curing layer. Multiple pores are uniformly distributed around the positioning columns and along the columns from top to bottom. The top sealing layer is installed on the upper end of the inner curing layer and is distributed on the upper inner surface of the positioning main frame to achieve sealing.

[0005] Furthermore, the longitudinal cross-section of the positioning main frame has a U-shaped structure.

[0006] Furthermore, multiple insertion slots are evenly provided inside the lower part of the positioning main frame; the lower end of the positioning post is inserted into the insertion slot.

[0007] Furthermore, the positioning main frame and positioning column are made of kaolin, alumina powder, magnesia clay, bauxite, and kyanite powder.

[0008] Furthermore, the internal curing layer is made of kaolin, alumina powder, feldspar powder, and gypsum powder.

[0009] Furthermore, the top encapsulation layer is made of kaolin, alumina powder, graphite powder, and bauxite.

[0010] Furthermore, the thickness of the top encapsulation layer is 2 to 3 cm.

[0011] Furthermore, the upper surface of the internal curing layer is flush with the upper surface of the positioning post.

[0012] A preparation process for a lightweight insulating brick with uniformly distributed pores includes the following steps: S1. Add 40 to 50 parts by weight of kaolin, 20 to 30 parts of alumina powder, 5 to 10 parts of magnesia clay, 3 to 4 parts of bauxite, 2 to 3 parts of kyanite powder, 20 to 30 parts of water, and 5 to 10 parts of sawdust into a mixer and mix thoroughly to form a mixture. Pour the mixture into the casting mold of the positioning main frame and the casting mold of the positioning column respectively. After standing, demolding, and hot steam curing, send it into the kiln for sintering to obtain the positioning main frame and the positioning column. Drill multiple insertion grooves evenly inside the lower part of the positioning main frame using a drilling machine. S2. Evenly insert multiple burn-out spheres onto the positioning post, and then insert the positioning post into the insertion slot respectively. The upper end of the positioning post is located inside the upper end of the positioning main frame. S3. Add 30 to 40 parts by weight of kaolin, 5 to 10 parts of feldspar powder, 5 to 10 parts of gypsum powder, 20 to 30 parts of alumina powder, and 20 to 30 parts of water into a mixer. After thorough mixing, a mixture with an internal solidification layer is obtained. The mixture with the internal solidification layer is then filled into the interior of the positioning main frame so that the upper surface of the mixture is flush with the upper surface of the positioning column. S4. Add 30 to 40 parts by weight of kaolin, 20 to 30 parts of alumina powder, 5 to 10 parts of graphite powder, 5 to 8 parts of bauxite, and 10 to 20 parts of water into a mixer. After thorough mixing, the top sealing layer mixing material is obtained. The top sealing layer mixing material is injected onto the top side of the inner curing layer mixing material, so that the upper surface of the top sealing layer mixing material is flush with the upper perimeter of the positioning main frame. S5. The structure from step S4 is left to stand and dry, and then sent to a kiln for sintering. The multiple burn-off spheres in step S2 burn off after being fired at high temperature, resulting in multiple pores being evenly distributed inside the internal solidified layer, thus obtaining a lightweight heat-insulating brick.

[0013] Furthermore, the burn-off spheres in step S2 are expandable polystyrene foam spheres.

[0014] The beneficial effects of this invention are as follows: This invention changes the traditional operation structure and process of uniformly mixing raw materials and integrally casting and firing. This invention is prepared through a separate structure, including a positioning main frame, positioning columns, an internal curing layer, and a top encapsulation layer. Multiple burn-off spheres are evenly inserted into the positioning columns, and then positioning columns are inserted into multiple insertion slots inside the lower part of the positioning main frame. In this way, the burn-off spheres are evenly positioned inside the positioning main frame by multiple positioning columns, thus achieving the positioning and dispersion of burn-off positions. Then, the internal curing layer and the top encapsulation layer are filled in sequence, thus achieving the uniform distribution of burn-off pores inside the structure, improving the thermal insulation uniformity and lightweight uniformity of the structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the positioning main frame, positioning column, and burn-out sphere of the present invention.

[0016] Figure 2 For the present invention Figure 1 A schematic diagram of a structure filled with an internal curing layer.

[0017] Figure 3 For the present invention Figure 2 A schematic diagram of the structure filled with the top encapsulation layer.

[0018] Figure 4 This is a schematic diagram of the structure in which pores appear after the present invention is burned off.

[0019] Figure 5 For the present invention Figure 4 A structural diagram of one side. Detailed Implementation

[0020] The invention will now be described in further detail with reference to the accompanying drawings.

[0021] like Figures 1 to 5 As shown, a lightweight thermal insulation brick with uniformly distributed pores includes a positioning main frame 1, positioning posts 2, an internal curing layer 3, and a top sealing layer 4. The positioning main frame 1 has a structure that is closed at the bottom and all four sides and open at the top. Multiple positioning posts 2 are uniformly installed inside the positioning main frame 1. The internal curing layer 3 is filled inside the positioning main frame 1. Multiple pores 31 are uniformly provided inside the internal curing layer 3, and the multiple pores 31 are evenly distributed around the positioning posts 2 and distributed from top to bottom along the positioning posts 2. The top sealing layer 4 is installed on the upper end of the internal curing layer 3 and is distributed on the upper inner surface of the positioning main frame 1 to achieve sealing.

[0022] like Figures 1 to 5As shown, the longitudinal cross-section of the positioning main frame 1 is U-shaped. To facilitate the insertion and installation of multiple positioning posts 2, multiple insertion slots 11 are evenly provided inside the lower part of the positioning main frame 1; the lower ends of the positioning posts 2 are inserted into the insertion slots 11. To facilitate the preparation of the positioning main frame 1, the positioning main frame 1 and the positioning posts 2 are made of kaolin, alumina powder, magnesia clay, bauxite, and kyanite powder. To facilitate the preparation of the internal curing layer 3, the internal curing layer 3 is made of kaolin, alumina powder, feldspar powder, and gypsum powder. To facilitate the preparation of the top encapsulation layer 4, the top encapsulation layer 4 is made of kaolin, alumina powder, graphite powder, and bauxite. The thickness of the top encapsulation layer 4 is 3 cm. The upper surface of the internal curing layer 3 is flush with the upper surface of the positioning posts 2.

[0023] like Figures 1 to 5 As shown, the preparation process of a lightweight insulating brick with uniformly distributed pores of 31 includes the following steps: S1. Add 45 parts kaolin, 25 parts alumina powder, 7 parts magnesia clay, 3 parts bauxite, 2 parts kyanite powder, 25 parts water, and 7 parts sawdust to a mixer and mix thoroughly to form a mixture. Pour the mixture into the casting mold of the positioning main frame 1 and the casting mold of the positioning column 2. After standing, demolding, and hot steam curing, send them into a kiln for sintering to obtain the positioning main frame 1 and the positioning column 2. Drill multiple insertion grooves 11 evenly inside the lower part of the positioning main frame 1 using a drilling machine.

[0024] S2. Multiple burn-out spheres 5 are evenly inserted into the positioning post 2, and then the positioning post 2 is inserted into the insertion groove 11 respectively. The upper end of the positioning post 2 is located inside the upper end of the positioning main frame 1. The burn-out spheres 5 in this step are expandable polystyrene foam spheres.

[0025] S3. Add 35 parts by weight of kaolin, 6 parts by weight of feldspar powder, 7 parts by weight of gypsum powder, 25 parts by weight of alumina powder and 25 parts by weight of water into a mixer. After thorough mixing, the mixture of the inner solidification layer 3 is obtained. The mixture of the inner solidification layer 3 is filled into the interior of the positioning main frame 1 so that the upper surface of the mixture is flush with the upper surface of the positioning column 2.

[0026] S4. Add 35 parts by weight of kaolin, 25 parts by weight of alumina powder, 8 parts by weight of graphite powder, 6 parts by weight of bauxite, and 15 parts by weight of water into a mixer. After thorough mixing, the mixing material of the top encapsulation layer 4 is obtained. The mixing material of the top encapsulation layer 4 is injected into the upper side of the mixing material of the inner curing layer 3, so that the upper surface of the mixing material of the top encapsulation layer 4 is flush with the upper perimeter of the positioning main frame 1.

[0027] S5. The structure from step S4 is left to stand and dry, and then sent to a kiln for sintering. The multiple burn-off spheres 5 in step S2 burn off after being fired at high temperature, resulting in multiple pores 31 being evenly distributed inside the internal solidified layer 3, thus obtaining a lightweight heat-insulating brick.

[0028] This invention changes the traditional operation structure and process of uniformly mixing raw materials and integral casting and firing. This invention is prepared by a separate structure, including a positioning main frame 1, positioning columns 2, an internal curing layer 3, and a top encapsulation layer 4. Multiple burn-off spheres 5 are evenly inserted into the positioning columns 2, and then the positioning columns 2 are respectively inserted into multiple insertion slots 11 at the bottom of the positioning main frame 1. In this way, the burn-off spheres 5 are evenly positioned inside the positioning main frame 1 by multiple positioning columns 2, thus realizing the positioning and dispersion of burn-off positions. Then, by filling the internal curing layer 3 and the top encapsulation layer 4 in sequence, the burn-off pores 31 inside the structure are evenly distributed, improving the heat insulation uniformity and lightweight uniformity of the structure.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lightweight insulating brick with uniformly distributed pores, characterized in that, The device includes a positioning main frame, positioning posts, an internal curing layer, and a top encapsulation layer. The positioning main frame has a structure that is closed at the bottom and all four sides and open at the top. Multiple positioning posts are evenly installed inside the positioning main frame. The internal curing layer is filled inside the positioning main frame. Multiple pores are evenly distributed around the positioning posts and along the posts from top to bottom. The top encapsulation layer is installed on the upper end of the internal curing layer and is distributed on the upper inner surface of the positioning main frame to achieve encapsulation.

2. The lightweight insulating brick with uniformly distributed pores according to claim 1, characterized in that, The longitudinal cross-section of the positioning main frame has a U-shaped structure.

3. The lightweight insulating brick with uniformly distributed pores according to claim 1, characterized in that, Multiple insertion slots are evenly provided inside the lower part of the positioning main frame; the lower end of the positioning column is inserted into the insertion slot.

4. The lightweight insulating brick with uniformly distributed pores according to claim 1, characterized in that, The positioning frame and positioning column are made of kaolin, alumina powder, magnesia clay, bauxite, and kyanite powder.

5. The lightweight insulating brick with uniformly distributed pores according to claim 1, characterized in that, The internal curing layer is made of kaolin, alumina powder, feldspar powder, and gypsum powder.

6. The lightweight insulating brick with uniformly distributed pores according to claim 1, characterized in that, The top encapsulation layer is made of kaolin, alumina powder, graphite powder, and bauxite.

7. The lightweight insulating brick with uniformly distributed pores according to claim 1, characterized in that, The thickness of the top encapsulation layer is 2 to 3 cm.

8. The lightweight insulating brick with uniformly distributed pores according to claim 1, characterized in that, The upper surface of the internal curing layer is flush with the upper surface of the positioning post.

9. A preparation process for a lightweight insulating brick with uniformly distributed pores according to claim 1, characterized in that, The steps are as follows: S1. Add 40 to 50 parts by weight of kaolin, 20 to 30 parts of alumina powder, 5 to 10 parts of magnesia clay, 3 to 4 parts of bauxite, 2 to 3 parts of kyanite powder, 20 to 30 parts of water, and 5 to 10 parts of sawdust into a mixer and mix thoroughly to form a mixture. Pour the mixture into the casting mold of the positioning main frame and the casting mold of the positioning column respectively. After standing, demolding, and hot steam curing, send it into the kiln for sintering to obtain the positioning main frame and the positioning column. Drill multiple insertion grooves evenly inside the lower part of the positioning main frame using a drilling machine. S2. Evenly insert multiple burn-out spheres onto the positioning post, and then insert the positioning post into the insertion slot respectively. The upper end of the positioning post is located inside the upper end of the positioning main frame. S3. Add 30 to 40 parts by weight of kaolin, 5 to 10 parts of feldspar powder, 5 to 10 parts of gypsum powder, 20 to 30 parts of alumina powder, and 20 to 30 parts of water into a mixer. After thorough mixing, a mixture with an internal solidification layer is obtained. The mixture with the internal solidification layer is then filled into the interior of the positioning main frame so that the upper surface of the mixture is flush with the upper surface of the positioning column. S4. Add 30 to 40 parts by weight of kaolin, 20 to 30 parts of alumina powder, 5 to 10 parts of graphite powder, 5 to 8 parts of bauxite, and 10 to 20 parts of water into a mixer. After thorough mixing, the top sealing layer mixing material is obtained. The top sealing layer mixing material is injected onto the top side of the inner curing layer mixing material, so that the upper surface of the top sealing layer mixing material is flush with the upper perimeter of the positioning main frame. S5. The structure from step S4 is left to stand and dry, and then sent to a kiln for sintering. The multiple burn-off spheres in step S2 burn off after being fired at high temperature, resulting in multiple pores being evenly distributed inside the internal solidified layer, thus obtaining a lightweight heat-insulating brick.

10. The preparation process of the lightweight insulating brick with uniformly distributed pores according to claim 9, characterized in that, The burn-off spheres in step S2 are expandable polystyrene foam spheres.

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