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Heat-insulating integral compound brick with lutaceous structure and preparation method

A composite brick and clay-based technology, applied in the field of refractory materials, can solve the problems of high thermal conductivity, poor structural strength, poor thermal insulation performance, etc. Effect

Inactive Publication Date: 2011-11-02
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of existing clay bricks used in rotary kilns, such as poor structural strength, high thermal conductivity, and poor thermal insulation performance, the purpose of the present invention is to provide a clay structure with good structural strength and good thermal insulation performance. Thermal insulation integrated composite brick and preparation method thereof

Method used

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  • Heat-insulating integral compound brick with lutaceous structure and preparation method
  • Heat-insulating integral compound brick with lutaceous structure and preparation method
  • Heat-insulating integral compound brick with lutaceous structure and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Example 1: Clay structure heat insulation integrated composite brick

[0034] The raw materials and mass percentages thereof used in the heavy working layer of this embodiment are:

[0035]

[0036] Among them, the grade of coke gem is YNS36.

[0037] According to the above proportioning ratio, the mass percentage of the obtained heavy working layer composition Al 2 o 3 43%, SiO 2 52.4%, and the rest are other ingredients introduced by raw materials.

[0038]The raw materials and their mass percentages used in the lightweight heat insulation layer are: 40% corundum hollow balls, 30% floating beads, 25% coke gems not larger than 325 mesh, 5% 325 mesh Suzhou mud, plus binder paper pulp waste Liquid 6%; among them, the mass percentage content of Al in corundum hollow spheres 2 o 3 It is 96%; the mass percentage content of Al in floating beads 2 o 3 25%, SiO 2 65%.

[0039] The manufacturing method of clay structure heat insulation integrated composite brick c...

Embodiment 2

[0045] Example 2: Clay structure heat insulation integrated composite brick

[0046] The raw materials and mass percentages thereof used in the heavy working layer of this embodiment are:

[0047]

[0048] Among them, the grade of coke gem is YNS36, and the grade of silica is GS-98.5.

[0049] According to the above proportioning ratio, the mass percentage of the obtained heavy working layer composition Al 2 o 3 It is 30%, silicon oxide is 65%, and the rest are other components introduced by raw materials.

[0050] The raw materials and their mass percentages used in the lightweight heat insulation layer are: 45% lightweight high-alumina aggregate, 15% lightweight ceramsite, 40% coke gemstones not larger than 325 mesh, and methyl fiber as a binder 7% plain solution; among them, the mass percentage content of Al in the lightweight high alumina aggregate 2 o 3 70%, the mass percentage content of Al in lightweight ceramsite 2 o 3 It is 18% and silicon oxide is 65%.

[...

Embodiment 3

[0057] Example 3: Clay structure heat insulation integrated composite brick

[0058] The raw materials and mass percentages thereof used in the heavy working layer of this embodiment are:

[0059]

[0060] Among them, the grade of coke gem is YNS36.

[0061] According to the above proportioning ratio, the mass percentage of the obtained heavy working layer composition Al 2 o 3 42%, SiO 2 It is 47.5%, and the rest are other ingredients introduced by raw materials.

[0062] The raw materials and their mass percentages used in the lightweight heat insulation layer are: 30% corundum hollow balls, 25% lightweight mullite aggregates, 35% coke powder not larger than 325 mesh, 10% 325 mesh Liuzhou mud , plus 10% of the binder lignosulfonate solution; wherein the mass percentage of the composition in the corundum hollow sphere is Al 2 o 3 96%, the mass percentage of Al in the lightweight mullite aggregate 2 o 3 was 74%.

[0063] The manufacturing method of clay structure he...

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Abstract

The invention discloses a heat-insulating integral compound brick with a lutaceous structure. The heat-insulating integral compound brick comprises a dense clay heavy working layer and a light heat-insulating layer which is prepared from one or more lightweight aggregates serving as raw materials such as corundum hollow spheres, light porzite aggregate, light high-alumina aggregate, cenospheres and light ceramsite, wherein the dense clay heavy working layer and the light heat-insulating layer are compounded to obtain the compound brick; and the length ratio of the heavy working layer to the light heat-insulating layer is (1-5):(3-1). The invention further discloses a preparation method of the heat-insulating integral compound brick with the lutaceous structure. The heat-insulating integral compound brick has high structural strength and high heat insulating performance.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a refractory composite brick and a preparation method thereof. Background technique [0002] With the continuous emergence of new technologies for cement production, the main equipment of cement production is developing in the direction of large-scale, increasing production, improving quality, saving energy, reducing consumption, and reducing costs have become the key to increasing efficiency in production management. The rotary kiln is mainly composed of kiln shell, refractory bricks and transmission equipment. During the production process, the heat in the material is transferred to the kiln skin, refractory bricks and kiln shell through radiation and conduction, and the heat transferred to the kiln shell is then dissipated into the atmosphere through radiation and convection. Since the thermal conductivity and the thickness of the material determine t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D1/06C04B35/66
Inventor 王家邦
Owner ZHEJIANG UNIV
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