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Composite silicon brick and preparation method thereof

A technology of silica bricks and silica, which is applied in the field of composite silica bricks and its preparation, can solve problems such as easy flocculation of lime milk solution, uneven dispersion of silica bricks, and insufficient fineness of iron oxide particle size, so as to improve acid and alkali corrosion resistance and raw materials The effect of enriching and reducing porosity

Active Publication Date: 2015-12-16
唐山市开平区鑫惠保温耐火材料厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the grain size of iron oxide is not fine enough when the existing silica brick is made, and the dispersion in the silica brick is not uniform enough; calcium oxide is actually added with calcium hydroxide, and its milk of lime solution is easy to flocculate and not easy to disperse. Provide a composite silica brick with excellent thermal shock resistance, strong resistance to slag and alkali metal erosion, erosion resistance, excellent heat insulation performance, and high temperature volume stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A composite silica brick, which uses silica as the main raw material, and the main raw material silica is divided into silica particles, silica powder, silica coarse powder and silica fine powder according to the particle size. The composite silica brick is composed of the following weight percentage: silica particles 15% , 40% silica powder, 20% coarse silica powder, 6% fine silica powder, 10% graphene, 3% nano-silica, 3% composite mineralizer, 2% binder and 1% nano-zirconia.

[0034]The parts by weight of each component in the raw material composition of the composite mineralizer are: 50 parts of granite, 30 parts of fluorite, 25 parts of potassium feldspar, 20 parts of diatom mud, 2 parts of boron nitride, and 3 parts of glass microspheres , 10 parts of nano-iron oxide and 5 parts of nano-zinc oxide. The composite mineralizer is prepared through the following steps: 1) crush granite, fluorite, and potassium feldspar through a 100-300 mesh sieve to remove impurities; ...

Embodiment 2

[0041] A composite silica brick, which uses silica as the main raw material. The main raw material silica is divided into silica particles, silica powder, silica coarse powder and silica fine powder according to the particle size. The composite silica brick is composed of the following weight percentage: silica particles 20% , 30% silica powder, 15% silica coarse powder, 19% silica fine powder, 5% graphene, 4% nano-silica, 2% composite mineralizer, 3% binder and 2% nano-zirconia.

[0042] The parts by weight of each component in the raw material composition of the composite mineralizer are: 50 parts of granite, 30 parts of fluorite, 25 parts of potassium feldspar, 20 parts of diatom mud, 2 parts of boron nitride, and 3 parts of glass microspheres , 10 parts of nano-iron oxide and 5 parts of nano-zinc oxide. The composite mineralizer is prepared through the following steps: 1) crush granite, fluorite, and potassium feldspar through a 100-300 mesh sieve to remove impurities; 2) ...

Embodiment 3

[0049] A composite silica brick, which uses silica as the main raw material. The main raw material silica is divided into silica particles, silica powder, silica coarse powder and silica fine powder according to the particle size. The composite silica brick is composed of the following weight percentage: silica particles 30% , 20% silica powder, 10% coarse silica powder, 15% fine silica powder, 8% graphene, 5% nano-silica, 4% composite mineralizer, 5% binder and 3% nano-zirconia.

[0050] The parts by weight of each component in the raw material composition of the composite mineralizer are: 50 parts of granite, 30 parts of fluorite, 25 parts of potassium feldspar, 20 parts of diatom mud, 2 parts of boron nitride, and 3 parts of glass microspheres , 10 parts of nano-iron oxide and 5 parts of nano-zinc oxide. The composite mineralizer is prepared through the following steps: 1) crush granite, fluorite, and potassium feldspar through a 100-300 mesh sieve to remove impurities; 2) ...

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Abstract

The present invention relates to a composite silicon brick and a preparation method thereof, wherein silica rock is adopted as a main raw material, the main raw material silica rock is divided into silica rock particles, silica rock powder, silica rock coarse powder and silica rock fine powder according to the particle size, and the composite composition comprises silica rock particles, silica rock powder, silica rock coarse powder, silica rock fine powder, graphene, nanometer silica, a composite mineralization agent, a binder and nanometer zirconia. According to the present invention, the composite silicon brick has characteristics of excellent thermal shock resistance, strong slag erosion resistance, strong alkali metal erosion resistance, excellent erosion resistance, excellent thermal insulation and good high temperature volume stability; with the graphene, the internal contact of the brick is close so as to reduce the stress generated by expansion during the firing and prevent the product from loosening or cracking; and with the high strength of the graphene, the excellent mechanical property of the silicon brick is ensured, and the acid-alkali corrosion resistance of the silicon brick can be enhanced.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a composite silica brick with excellent thermal shock resistance, strong resistance to slag and alkali metal erosion, erosion resistance, excellent heat insulation performance, and good high-temperature volume stability and a preparation method thereof . Background technique [0002] With the increasing shortage of energy, countries pay more and more attention to the development, production and use of energy-saving materials for high-temperature industry. Silica bricks have been widely used and researched in lightweight refractory systems due to their high load softening temperature, good volume stability at high temperatures, and no shrinkage after long-term use. [0003] Due to the large volume expansion caused by the rapid crystal transformation of silica during heating, the firing of silica bricks is more difficult than other refractory materials. The core tech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 景红卫
Owner 唐山市开平区鑫惠保温耐火材料厂
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