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Compound brick with dovetail tenon type embedding structure and preparation method of compound brick

A mosaic structure and composite brick technology, applied in lighting and heating equipment, furnace components, furnaces, etc., can solve the problems of large interface stress, small contact area, thermal insulation damage, etc., and achieve the effect of improving thermal insulation performance and reducing thermal conductivity

Inactive Publication Date: 2017-06-13
SHANDONG KEXIN NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patented design is novel and creative, and can be implemented, but it is difficult to achieve good results
Mainly because of the following problems: 1) The thermal insulation layer and the sintered layer are directly combined. During the firing process, the difference in expansion of the two materials will cause cracking and separation. 2) The lightweight thermal insulation layer must have a high Strength support, once the strength cannot keep up, coupled with the small contact area with the kiln skin, it will be worn during the operation of the rotary kiln, which will not only lead to damage to the insulation, but also damage to the kiln lining and stop the kiln
This is much better than straight-line compounding, but when the kiln cools down, the inner working layer is very large, causing bricks to fall and draw lots
Especially when the materials of the insulation layer and the working layer are very different, the interface stress between them is very large, which makes it easier to draw lots when cracking along the interface

Method used

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  • Compound brick with dovetail tenon type embedding structure and preparation method of compound brick
  • Compound brick with dovetail tenon type embedding structure and preparation method of compound brick
  • Compound brick with dovetail tenon type embedding structure and preparation method of compound brick

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 is attached figure 2 .Working layer A adopts magnesium aluminum spinel castable, and its properties are shown in Table 1. The lightweight insulation layer B is made of nano-micron aluminum-silicon castable, and its performance is shown in Table 1. The compound between them is compounded by dovetail tenon. The size of the large end of the dovetail groove is b, and the size of the small end is a. Both are required to meet the following conditions:

[0035] a≤0.97b

[0036] This can ensure that after the kiln is shut down, the size of the large end will still be larger than that of the small end after the size shrinks, so there will be no lottery and kiln collapse.

[0037] Table 1

[0038]

[0039] The composite brick is applied to the production of lime rotary kiln with a kiln chamber temperature of 1500°C. When the insulation layer length of the brick is 80mm and the working layer length is 170mm, the groove size is 10mm, and a 10mm high-temperatur...

Embodiment 2

[0041] See attached image 3 .The working layer adopts high-aluminum unfired bricks, and its properties are shown in Table 2. The lightweight insulation layer B is made of nano-micron aluminum-silicon castable, and its properties are shown in Table 2. The composite between them is composited by dovetail groove. The size of the large end of the dovetail is b, and the size of the small end is a. Both are required to meet the following conditions:

[0042] a≤0.97b

[0043] This can ensure that after the kiln is shut down, the size of the large end will still be larger than that of the small end after the size shrinks, so there will be no lottery and kiln collapse.

[0044] Table 2

[0045]

[0046] The composite brick is applied to the rotary kiln lining with a kiln chamber temperature of 1600°C. When the insulation layer length of the brick is 80mm and the working layer length is 180mm, the groove size is 10mm, and a 10mm high-temperature nano-plate is placed inside. i...

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PUM

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Abstract

The invention is a composite brick with a dovetail mosaic structure. The heavy material and the light thermal insulation material are respectively placed at both ends of the mold, separated by a dovetail baffle in the middle, and then formed and solidified to obtain a composite brick. . A dovetail-type seam inlay structure is used between light and heavy materials. In this way, even if the combination of the two materials is not strong due to the large difference in performance, the phenomenon of separation (drawing lots) between the working layer and the insulation layer will not occur.

Description

technical field [0001] The invention relates to a composite brick with a dovetail tenon mosaic structure and a preparation method thereof. It combines corrosion-resistant, wear-resistant and high-temperature-resistant materials with heat-insulating, refractory and heat-insulating materials to play a dual role of durability and heat preservation. It belongs to thermal Industrial kiln field. Background technique [0002] Patent 201520034200.9 relates to the lining structure of the rotary kiln, which is also a composite lining. The outer layer is the insulation layer, and the working layer is the dense layer. Metal anchors are used between the two, and the metal anchors are welded to the kiln shell. Because it is used in a rotary kiln, the working layer uses aluminum-silicon refractory materials containing silicon carbide, and the heat insulation layer is a lightweight aluminum-silicon refractory material without silicon carbide. The structure can keep heat, but when the ope...

Claims

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Application Information

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IPC IPC(8): F27D1/06C04B35/043C04B35/101C04B35/14C04B35/66
CPCF27D1/06C04B35/043C04B35/101C04B35/14C04B35/66C04B2235/3206C04B2235/3217C04B2235/3418C04B2235/77C04B2235/96C04B2235/9607
Inventor 田守信徐长武田守民贺恒星吴秀娟田伟杰
Owner SHANDONG KEXIN NEW MATERIALS
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