Siliceous mullite structure-insulating integrated composite brick and preparation method thereof

A technology of silicon molybdenum structure and composite brick, which is applied in the field of silicon molybdenum structure heat insulation integrated composite brick and preparation field, can solve the problems of high thermal conductivity, low strength of lightweight parts, low refractoriness, etc. Excellent peeling performance and energy saving effect

Active Publication Date: 2010-10-13
浙江盛旺耐火材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the existing problems of high thermal conductivity, low strength and low refractoriness of wear-resistant silica bricks used in rotary kilns, the pur

Method used

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  • Siliceous mullite structure-insulating integrated composite brick and preparation method thereof
  • Siliceous mullite structure-insulating integrated composite brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] In this embodiment, a dense silicon molybdenum heavy working layer and aluminum oxide hollow spheres are used for layered compounding. The raw materials and mass percentages used in the heavy working layer are:

[0040] 3~5mm high bauxite 18%

[0041] 1~3mm high bauxite 33%

[0042] Less than 1mm high bauxite 15%

[0043] No more than 325 mesh high bauxite 12%

[0044] Less than 1mm silicon carbide 10%

[0045] Not more than 200 mesh silicon carbide 6%

[0046] Clay 6%

[0047] Plus liquid binder 3%

[0048] Functional admixture 8%

[0049] The added liquid binder is industrial wood sulfonate solution, and the functional additive is kyanite;

[0050] The raw materials used in the light working layer and their mass percentages are: 65% of aluminum oxide hollow spheres, 35% of α-Al2O3 micropowder, and 35% of the mass percent of α-Al2O3 micropowder as a phosphoric acid binder.

[0051] The manufacturing method of Simo structural heat insulation integrated composite...

Embodiment 2

[0058] In this embodiment, a dense silicon molybdenum heavy working layer and aluminum-magnesium hollow spheres are used for layered compounding. The raw materials and mass percentages of the heavy working layer are:

[0059] 3~5mm high bauxite 23%

[0060] 1~3mm high bauxite 30%

[0061] Less than 1mm high bauxite 10%

[0062] No more than 325 mesh high bauxite 15%

[0063] Silicon carbide less than 1mm 11%

[0064] Not more than 200 mesh silicon carbide 9%

[0065] Clay 2%

[0066] Plus liquid binder 5%

[0067] Functional admixture 3%

[0068] The additional liquid binder is methyl cellulose solution, and the functional additive is zirconia

[0069] The raw materials used in the light working layer and their mass percentages are: 38% of aluminum-magnesium hollow spheres, 62% of high-bauxite powder, and 31% of the mass percentage of high-bauxite powder added with aluminum dihydrogen phosphate binder. %.

[0070] The manufacturing method of Simo structural heat insul...

Embodiment 3

[0077] In this embodiment, dense silicon molybdenum heavy working layer and corundum hollow spheres are used for layered compounding. The raw materials and mass percentages used in the heavy working layer are:

[0078] 3~5mm high bauxite 20%

[0079] 1~3mm high bauxite 30%

[0080] Less than 1mm high bauxite 10%

[0081] No more than 325 mesh high bauxite 12%

[0082] Less than 1mm silicon carbide 13%

[0083] Not more than 200 mesh silicon carbide 9%

[0084] Clay 6%

[0085] Plus liquid binder 4%

[0086] Functional admixture 5%

[0087] The added liquid binder is 4% yellow dextrin solution, and the functional additive is zirconium silicate;

[0088] The raw materials used in the light working layer and their mass percentages are: 60% of corundum hollow balls, 40% of coke gemstone powder, and 35% of the mass percentage of coke gemstone powder plus aluminum sulfate binder.

[0089] The manufacturing method of Simo structural heat insulation integrated composite brick ...

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Abstract

The invention discloses a siliceous mullite structure-insulating integrated composite brick and a preparation method thereof. The brick consists of a heavy working layer and a high-strength light insulating layer, wherein the main materials of the heavy working layer are dense bauxite and silicon carbide material, the aggregate of the high-strength light insulating layer is one or the mixture of alumina hollow balls, alumina-magnesia hollow balls, corundum hollow balls, hollow microspheres and light ceramisite, the heavy working layer and the light insulating layer are combined together by adopting vibratory pressing or mechanical pressing, and the length proportion between the heavy working layer and a light insulating layer is 1 to 5:2 to 1. The invention overcomes the defect of the abrasion-resistant siliceous mullite brick for rotary kilns, i.e. high coefficient of heat conductivity, and the defects of the light part of the conventional siliceous mullite composite brick, i.e. low strength and low refractoriness, and the structure-insulating integrated composite brick has the advantages of high abrasion resistance, high refractoriness, high structure strength and high insulating property.

Description

technical field [0001] The invention relates to a refractory composite brick and a preparation method, in particular to a composite brick with a silicon molybdenum structure and heat insulation integration and a preparation method. 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. Most of the existing refractory bricks and heat insulation bricks have a single structure, and bricks with various properties need to be used together. If they are used on relatively fixed equipment, such as tunnel kilns and downdraft kilns, they can meet the requirements when used together. ; But on some relatively moving equipment, such as a rotary kiln, it is difficult to meet the requirement...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/622
Inventor 王家邦王立旺
Owner 浙江盛旺耐火材料股份有限公司
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