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Preparation method of low heat conducting wear-resistant silicon-mullite heat-insulating bricks

A technology with high wear resistance and low thermal conductivity, which is applied in the field of refractory materials, can solve the problems of high thermal conductivity of heavy bricks, increase the heat consumption of clinker, and increase the temperature of supporting wheel tiles, so as to achieve convenient masonry construction and prolong service life , The effect of reducing material consumption

Inactive Publication Date: 2019-03-19
无锡远能耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thermal conductivity of heavy bricks is large, which makes the temperature of the outer wall of the kiln shell higher, increasing the heat consumption of clinker, and causing an increase in the unit cost of clinker; The overheating of the cylinder increases the probability of damage to the mechanical equipment, accelerates the deformation of the cylinder, and is easy to drop bricks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The preparation method of low thermal conductivity and high wear resistance silicon molybdenum composite heat insulation brick comprises the following steps:

[0016] (1) After the raw materials are ground, they are sieved for later use; the raw materials include bauxite clinker, silicon carbide, brown corundum, white mud, corundum hollow spheres, mullite hollow spheres, alumina hollow spheres, light Quality ceramsite;

[0017] (2) Bauxite clinker, silicon carbide, brown corundum, and white mud are mixed according to the proportion, mixed evenly after the ingredients are mixed, and the mixed raw materials are mixed, and a binder is added during the mixing process to obtain the mud of the working layer ;

[0018] Corundum hollow spheres, mullite hollow spheres, alumina hollow spheres, and lightweight ceramsite are compounded according to the ratio, mixed evenly after compounding, and the mixed raw materials are mixed, and a binder is added during the mixing process to o...

Embodiment 2

[0024] The preparation method of low thermal conductivity and high wear resistance silicon molybdenum composite heat insulation brick comprises the following steps:

[0025] (1) After the raw materials are ground, they are sieved for later use; the raw materials include bauxite clinker, silicon carbide, brown corundum, white mud, corundum hollow spheres, mullite hollow spheres, alumina hollow spheres, light Quality ceramsite;

[0026] (2) Bauxite clinker, silicon carbide, brown corundum, and white mud are mixed according to the proportion, mixed evenly after the ingredients are mixed, and the mixed raw materials are mixed, and a binder is added during the mixing process to obtain the mud of the working layer ;

[0027] Corundum hollow spheres, mullite hollow spheres, alumina hollow spheres, and lightweight ceramsite are compounded according to the ratio, mixed evenly after compounding, and the mixed raw materials are mixed, and a binder is added during the mixing process to o...

Embodiment 3

[0033] The preparation method of low thermal conductivity and high wear resistance silicon molybdenum composite heat insulation brick comprises the following steps:

[0034] (1) After the raw materials are ground, they are sieved for later use; the raw materials include bauxite clinker, silicon carbide, brown corundum, white mud, corundum hollow spheres, mullite hollow spheres, alumina hollow spheres, light Quality ceramsite;

[0035] (2) Bauxite clinker, silicon carbide, brown corundum, and white mud are mixed according to the proportion, mixed evenly after the ingredients are mixed, and the mixed raw materials are mixed, and a binder is added during the mixing process to obtain the mud of the working layer ;

[0036] Corundum hollow spheres, mullite hollow spheres, alumina hollow spheres, and lightweight ceramsite are compounded according to the ratio, mixed evenly after compounding, and the mixed raw materials are mixed, and a binder is added during the mixing process to o...

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Abstract

The invention belongs to the technical field of fireproof materials, and in particular relates to a preparation method of low heat conducting wear-resistant silicon-mullite heat-insulating bricks. Thepreparation method comprises the following steps: grinding raw materials and screening the raw materials for later use; adding a binder into a bauxite clinker, silicon carbide, brown aluminium oxideand white clay mixing process to obtain working layer mud; adding the binder in a corundum hollow ball, mullite hollow ball, alumina hollow ball and light ceramsite mixing process to obtain heat-insulating layer mud; pressing the mixed working layer mud and heat-insulating layer mud in a same mold by a brick press to compound brick blanks; feeding the formed brick blanks into a drying kiln to be dried; and filling the kiln with the dried brick blanks and firing the bricks in the kiln. The compound bricks provided by the invention have the advantages of being wear-resistant and anti-peeling, islow in heat conductive coefficient and high in structural strength, is directly used for the kiln, is convenient for masonry construction, and has the advantages of saving energy and reducing material consumption. The action of the dosage of the fireproof material of the rotary kiln is reduced, and the service life of the equipment is prolonged.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a preparation method of a low heat conduction and high wear resistance silicon molybdenum composite heat insulation brick. Background technique [0002] At present, the silicon molybdenum used in cement kilns has gradually appeared composite bricks combining heavy and light working layers, but due to the characteristics of light working layer materials, the structural strength is relatively low, so heavy bricks are mainly used. The thermal conductivity of heavy bricks is large, which makes the temperature of the outer wall of the kiln shell higher, increasing the heat consumption of clinker, and causing an increase in the unit cost of clinker; The overheating of the cylinder increases the chance of damage to the mechanical equipment, accelerates the deformation of the cylinder, and makes it easy to drop bricks. Therefore, if composite bricks with refract...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/185C04B35/10C04B35/622
CPCC04B35/101C04B35/185C04B35/622C04B35/66C04B2235/3217C04B2235/3463C04B2235/349C04B2235/3826
Inventor 罗佳李淑静姚伯洪姚英俞江
Owner 无锡远能耐火材料有限公司