Fused silica is a high-purity silicon dioxide (SiO₂) material produced by melting natural quartz or high-grade silica sand at extremely high temperatures. Unlike crystalline silica, fused silica has an amorphous structure, giving it exceptional thermal stability, very low thermal expansion, and excellent resistance to thermal shock.
As a professional industrial mineral supplier, Zexi Mineral provides high-quality fused silica materials suitable for refractory, glass, semiconductor, and high-temperature industrial applications.
Key Properties of Fused Silica
High Thermal Stability
Fused silica can operate continuously at temperatures above 1000°C and withstand short-term exposure up to 1650°C, making it ideal for extreme thermal environments.
Extremely Low Thermal Expansion
Its ultra-low coefficient of thermal expansion minimizes cracking, deformation, and stress under rapid heating and cooling cycles.
High Chemical Purity
With SiO₂ content typically above 99.5%, fused silica exhibits excellent resistance to acids and most chemical environments.
Excellent Electrical Insulation
Fused silica offers outstanding dielectric strength, suitable for electrical and electronic applications operating at high temperatures.
Fused Silica Applications
Refractory Industry
Fused silica is widely used in refractory linings, ramming masses, furnace components, and kiln furniture due to its superior thermal shock resistance.
Glass Industry
In glass manufacturing, fused silica is used for furnace linings, rollers, crucibles, and molds where purity and dimensional stability are critical.
Semiconductor & Electronics
High-purity fused silica plays a key role in semiconductor manufacturing equipment, wafer processing, and electronic insulation components.
Chemical Processing
Its resistance to corrosion makes fused silica suitable for chemical reactors, laboratory equipment, and specialized linings.
Available Forms & Specifications
Fused silica powder
Fused silica sand / grain
Custom particle size distribution
Industrial and high-purity grades available on request
Why Choose Zexi Mineral?
Stable quality and strict raw material control
Consistent chemical composition
Professional technical support
Reliable global supply and packaging solutions
Contact Us
For technical data sheets (TDS), samples, or pricing of fused silica materials, please contact our sales and technical team.
