Fused silica brick supplier

Fused silica brick is a high-performance refractory material. It has been widely used in many high-temperature industrial fields due to its excellent thermal stability, low thermal expansion rate, and high temperature resistance. This article will introduce the characteristics, production processes, and application scenarios of fused quartz brick in detail.

Fused silica brick specification

Fused silica brick production

Fused quartz brick is a kind of high-precision and high-purity quartz material. The production method is to heat pure quartz sand in an electric furnace to above 1800℃ to melt it into fused quartz and then cut it with professional cutting equipment. Various sizes can be produced. Ordinary purity SiO2>99.5%. High purity SiO2z99.99%. Because the glass contains a large number of 0.003-0.3mm bubbles, the spectrum is dispersed. So it is opaque. The gas in the small bubbles contains about 60% CO, 10% CO2, 8% 02, va 22% N2. This will have favorable effects on heat insulation, thermal stability, infrared absorption, and glass emission. It is a high-grade refractory material.

Characteristics of fused silica brick

• Ultra-low thermal expansion rate: The thermal expansion coefficient of fused quartz bricks is close to zero. Even in the environment of rapid cooling and heating, it can maintain good dimensional stability and is not easy to crack or peel off.
• Excellent thermal shock resistance: Due to its special microstructure, fused quartz bricks can withstand extreme temperature fluctuations and are particularly suitable for equipment that requires frequent heating and cooling.
• High temperature resistance: It can withstand high temperatures above 1650℃ and is suitable for extremely high-temperature environments.
• Kimyoviy korroziyaga qarshilik: It has strong corrosion resistance to acidic slag, glass melt, silicate, va boshqalar., and is particularly suitable for the glass industry and ceramic industry.
• Good insulation performance: It can still maintain good elec.

Application areas of fused silica bricks

1 Shisha sanoati
Used in the kiln lining, heat storage chamber, kiln head, and furnace door of the glass melting furnace, effectively preventing material damage caused by temperature changes.

Applicable to equipment such as glass melting pool, glass liquid flow channel, and glass annealing furnace.

2 Ceramic and electronic industry
Applicable to the lining of high-temperature equipment such as electronic ceramic firing kiln and alumina ceramic sintering kiln.

Quartz crucibles and chip production furnaces are used in the electronics industry.

3. The iron and steel metallurgical industry
As an acidic furnace lining material, it is used in high-temperature melting equipment such as ladles, induction furnaces, and refining furnaces.

Applicable to high-temperature refractory linings, such as medium-frequency induction furnace linings.

4 Solar photovoltaic and semiconductor industries
Used in single crystal silicon and polycrystalline silicon melting equipment because of its high purity and excellent thermal stability.