Micropore light weight silica brick and preparation method thereof

A lightweight, silica brick technology, applied in the field of refractory materials, can solve the problems of poor heat insulation effect, high bulk density, low service temperature, etc., and achieve the effect of reducing specific gravity, small bulk density and high porosity

Inactive Publication Date: 2016-05-11
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a microporous lightweight silica brick to solve the problems of existing lightweight silica bricks with high volume density, large pore size, low service temperature and poor heat insulation effect

Method used

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  • Micropore light weight silica brick and preparation method thereof
  • Micropore light weight silica brick and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0032] The microporous lightweight silica brick of the present embodiment is mainly made of a mixture and an animal hoof keratin foaming agent, and the consumption of the animal hoof keratin foaming agent is 9% of the mixture quality;

[0033] The mixture is made up of the following components in mass percent: 10% silica particles (SiO 2 Content is 98wt%), 58% silica fine powder (SiO 2 Content is 98wt%), 15% silicon powder (SiO 2 The content is 92wt%), 8% of calcium silicate cement, 1% of iron oxide powder, 3% of calcium oxide powder, 3% of fluorite powder, and 2% of calcium lignosulfonate.

[0034] Among them, the particle size of silica particles is 0.1-3 mm, and the particle size of silica fine powder and silicon micropowder is ≤0.075 mm; in the mixture, the mass ratio of silica particles to silica fine powder is 10:73.

[0035] The preparation method of the microporous lightweight silica brick of the present embodiment comprises the following steps:

[0036] 1) Take the...

Embodiment 2

[0042] The microporous lightweight silica brick of this embodiment is mainly made of a mixture and a tea saponin vegetable protein foaming agent, and the consumption of the tea saponin vegetable protein foaming agent is 3% of the mixture quality;

[0043] The mixture is made up of the following components in mass percent: 40% silica particles (SiO 2 Content is 99wt%), 20% silica fine powder (SiO 2 Content is 99wt%), 10% quartz powder (SiO 2 content of 99.4wt%), 10% silicon powder (SiO 2 The content is 96wt%), 10% of silica sol, 1% of iron oxide powder, 5% of milk of lime, 3.5% of fluorite powder, and 0.5% of sodium carbonate.

[0044] Among them, the particle size of silica particles is 0.1-3 mm, and the particle size of silica fine powder, quartz powder, and silicon micropowder is ≤0.075 mm; in the mixture, the mass ratio of silica particles to silica fine powder is 40:40.

[0045] The preparation method of the microporous lightweight silica brick of the present embodiment...

Embodiment 3

[0052] The microporous lightweight silica brick of this embodiment is mainly made of a mixture and a foaming agent, and the amount of the foaming agent is 3% of the mixture quality; the foaming agent is composed of the following components by mass percentage: 20% Sodium Lauryl Sulfate and 80% Sodium Ceteth Sulfate;

[0053] The mixture is made up of the following components in mass percent: 10% silica particles (SiO 2 Content is 98.5wt%), 15% waste silica brick particles (SiO 2 Content is 94.3wt%), 55% silica fine powder (SiO 2 The content is 98.5wt%), 8% calcium silicate cement, 0.5% iron oxide powder, 5% calcium oxide powder, 1% fluorite powder, 0.5% sodium tripolyphosphate, 5% gelatin.

[0054] Among them, the particle size of silica particles and waste silica brick particles is 0.1-3 mm, and the particle size of silica fine powder is ≤0.075 mm; in the mixture, the mass ratio of silica particles to silica fine powder is 25:55.

[0055] The preparation method of the micro...

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Abstract

The invention discloses a micropore light weight silica brick and a preparation method thereof. The light weight silica brick is mainly prepared from a mixture and a foaming agent; a use quantity of the foaming agent is 0.1% to 10% of mass of the mixture; the mixture consists of the following components in percentage by mass: 70% to 95% of siliceous material, 1% to 25% of inorganic cementitious material, 0.1% to 15% of mineralizer, and 0.1% to 5% of additive, wherein the siliceous material consists of siliceous particles and siliceous fine powder, a particle size of the siliceous particles is 0.1 to 3mm, a particle size of the siliceous fine powder is smaller than or equal to 0.075mm, and a mass ratio of the siliceous particles to the siliceous fine powder is (1 to 65):(35 to 99). The obtained micropore light weight silica brick product has the advantages of fine aperture, small density, low thermal conductivity, high porosity, high mechanical intensity, high high-temperature volume stability, high resistance to the acid atmosphere, high slagging resistance and the like, is low in preparation cost and good in heat insulation effect, meets the harsh requirements of thermal equipment for a high-temperature environment and heat insulation, and is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a microporous lightweight silica brick, and also relates to a preparation method of the microporous lightweight silica brick. Background technique [0002] Energy is the main factor to maintain human civilization, and energy conservation and environmental protection have become a worldwide research topic. In terms of energy consumption, high-temperature industry is the main energy-consuming industry in my country's industrial production. Studies have shown that due to poor insulation of various kilns and heat pipelines in my country, the annual heat loss is equivalent to about 30-40 million tons of standard coal. If the new throttling insulation technology is used for transformation, the heat loss can be reduced by 20% to 30%. , has a positive effect on saving energy. Therefore, vigorously developing high-efficiency heat insulation technology and widely ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/10C04B35/14
CPCC04B35/14C04B38/10C04B2235/77C04B2235/96C04B2235/9607C04B2235/9615C04B38/0051C04B38/0054C04B38/0067C04B38/007C04B38/0074
Inventor 李文凤郭会师韩平叶方保侯永改邹文俊
Owner HENAN UNIVERSITY OF TECHNOLOGY
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