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Heat-insulation refractory brick manufacturing method

A technology for insulating refractory bricks and bricks, which is applied in the field of refractory material manufacturing, can solve the problem of high thermal conductivity of refractory bricks, and achieve the effects of low thermal conductivity, high compressive strength and good thermal insulation effect.

Inactive Publication Date: 2015-09-02
LIUZHOU PUYA TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for preparing heat-insulating refractory bricks to solve the problem of high thermal conductivity of refractory bricks currently produced

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0019] A method for preparing heat-insulating refractory bricks, comprising the following raw materials in parts by weight: 250 kg of bauxite clinker, 300 kg of silica powder, 150 kg of bonded clay, and 50 kg of calcium aluminate cement;

[0020] The operation steps are as follows:

[0021] a. take by weighing bauxite clinker, silica powder, bonded clay, calcium aluminate cement by the weight portion of above-mentioned each raw material, for subsequent use;

[0022] b. Put the bauxite clinker and silica powder into the mixer, add water accounting for 3% of the total weight of the raw materials, stir for 5 minutes, then add bonded clay and calcium aluminate cement and stir and mix evenly to obtain a mixture;

[0023] c. using a brick press to press the mixture obtained in step b to form an adobe;

[0024] d. The adobe is dried at a temperature of 80°C until the moisture content is lower than 7%;

[0025] e. Put the adobe obtained in step d into a firing kiln and sinter at a t...

Embodiment 2

[0027] A method for preparing heat-insulating refractory bricks, comprising the following raw materials in parts by weight: 350 kg of bauxite clinker, 400 kg of silica powder, 200 kg of bonded clay, and 80 kg of calcium aluminate cement;

[0028] The operation steps are as follows:

[0029] a. take by weighing bauxite clinker, silica powder, bonded clay, calcium aluminate cement by the weight portion of above-mentioned each raw material, for subsequent use;

[0030] b. Put the bauxite clinker and silica powder into the mixer, add water accounting for 5% of the total weight of the raw materials, stir for 8 minutes, then add bonded clay and calcium aluminate cement and stir and mix evenly to obtain a mixture;

[0031] c. using a brick press to press the mixture obtained in step b to form an adobe;

[0032] d. The adobe is dried at a temperature of 120°C until the moisture content is lower than 7%;

[0033] e. Put the adobe obtained in step d into a firing kiln and sinter at a ...

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Abstract

The invention discloses a heat-insulation refractory brick manufacturing method and relates to the technical field of manufacturing of refractory materials. The heat-insulation refractory brick manufacturing method includes preparing, by weight, 25-35 parts of calcined bauxite, 30-40 parts of silica powder, 15-20 parts of combined clay and 5-8 parts of calcium aluminate cement, mixing, making blank, drying and baking. Compared with the prior art, the heat-insulation refractory brick manufacturing method is high in compression strength, resistant to high temperature and low in heat conductivity and is good in heat insulation effect as a heat-insulation material of a boiler wall, and the boiler using the heat-insulation refractory brick keeps heat long and energy resource is saved.

Description

technical field [0001] The invention relates to the technical field of refractory material manufacturing, in particular to a method for preparing heat-insulating refractory bricks. Background technique [0002] The heat insulation layer of the boiler furnace wall and the lining that is not affected by high-temperature slag and corrosive gases can play the role of heat insulation, reduce the heat loss of the boiler, and save energy. The refractory brick used in the heat insulation layer requires high compressive strength. , high temperature resistance, low thermal conductivity, and the current production of refractory bricks has high compressive strength and high temperature resistance, but high thermal conductivity, used as the insulation layer material of the boiler furnace wall will cause poor heat insulation effect of the boiler, fast heat dissipation, and waste energy . Contents of the invention [0003] The technical problem to be solved by the present invention is t...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 梁运富
Owner LIUZHOU PUYA TRADE
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