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Method for preparing high-performance light-weight insulating brick by using quartz mine

A quartz ore, high-performance technology, used in the manufacture and application of chemical building materials, can solve the problems of high power consumption, large heat loss, slow furnace temperature rise, etc., to achieve low power consumption, small heat loss, and fast furnace temperature rise Effect

Inactive Publication Date: 2010-06-23
沈阳临德陶瓷研发有限公司
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  • Summary
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the commercially available thermal insulation bricks for industrial furnace lining are magnesia and aluminum refractory bricks. Their thermal conductivity is high. high battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The place of origin of the basic raw material natural quartz stone that the present invention adopts is Faku County, Shenyang City. Most of the ore is white, and the outer layer is slightly yellowish. Its high grade, SiO 2 The content is above 98.5%, and the impurities include Fe 2 o 3 、Al 2 o 3 , CaO, MgO, Na 2 O, etc., and the contents of other trace elements are all lower than the detection limit, and do not contain crystal water.

[0021] The above-mentioned base material is filled into the skeleton material after reaction, and is molded by sol-gel technology to prepare high-performance lightweight insulation bricks. The process is as follows: crush the natural high-quality quartz ore, take a certain amount of quartz ore block, crush it into small pieces, and then ball mill, pass the obtained quartz stone powder through a 200-mesh sieve, and leave the sieved part. Add 1.0mol / L hydrochloric acid to it, completely immerse the quartz stone powder in the acid, an...

Embodiment 2

[0023] The quartz ore is used as the basic raw material, and after being reacted, it is filled into the skeleton material, and the sol-gel technology is used to form it to prepare high-performance lightweight insulation bricks. The process is as follows: crush the natural high-quality quartz ore, take a certain amount of quartz ore block, crush it into small pieces, and then ball mill, pass the obtained quartz stone powder through a 200-mesh sieve, and leave the sieved part. Add 1.2mol / L hydrochloric acid to it, completely immerse the quartz stone powder in the acid, and stir for 4 hours. Add distilled water to wash until AgNO 3 Check that there is no chloride ion, filter it, dry it, mix it with soda ash at a molar ratio of 1:1.3, melt it in a high-temperature furnace, control the melting temperature to 960°C and keep it for 30 minutes to obtain solid sodium silicate. Slowly cool the prepared solid sodium silicate to room temperature, add distilled water, heat to 95°C to diss...

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Abstract

The invention relates to a method for preparing high-performance light-weight insulating bricks by using quartz mine. The method is that low-price natural high-quality quartz mine is used as basic raw material, the crushed natural quartzite and the soda ash react with each other and are prepared into water glass, framework material is filled and finally high-performance light-weight insulating bricks are obtained by using the sol-gel technology. The heat conductivity factor of the insulating bricks under room temperature is 0.05-0.06W / m.K and the density is 500-600Kg / m3. The effect is very excellent when the insulating bricks are used for long time in industrial furnaces with temperature no more than 1000 DEG C. Moreover, the insulating bricks can also be used in other places requiring heat isolation and heat insulation.

Description

technical field [0001] The invention relates to a method for preparing high-performance light-weight insulation bricks with quartz ore. The method uses low-cost natural high-quality quartz ore as a basic raw material, and belongs to the technical field of chemical building material manufacturing and application. Background technique [0002] Most of the commercially available thermal insulation bricks for industrial furnace lining are magnesia and aluminum refractory bricks. Their thermal conductivity is high. High battery. Therefore, the present invention provides a method for high-performance lightweight insulating bricks. The raw materials used in the method are cheap and the process is simple, which can well meet the needs of industrial furnace linings whose long-term service temperature does not exceed 1000°C. Contents of the invention [0003] The purpose of the present invention is to address the shortcomings of the above-mentioned prior art, and provide a process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B14/04
Inventor 韩绍娟许壮志薛健赵明亢永珍周涛
Owner 沈阳临德陶瓷研发有限公司
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