Introduction to Fused Silica
Fused silica, also known as fused quartz, is a high-purity silicon dioxide (SiO₂) material produced by melting natural quartz at extremely high temperatures. Due to its exceptional thermal stability, low thermal expansion, and excellent chemical resistance, fused silica is widely used in high-temperature and precision industrial applications.
As a professional fused silica manufacturer with over 25 years of experience, we supply high-quality fused silica materials to global customers in the foundry, refractory, and glass industries.
What Makes Fused Silica Unique?
Fused silica stands out among industrial minerals because of its outstanding physical and chemical properties:
- High Purity (SiO₂ ≥ 99.5%)
- Extremely Low Thermal Expansion
- Excellent Thermal Shock Resistance
- High Softening Point (≈ 1650°C)
- Strong Chemical Stability
- Low Electrical Conductivity
These characteristics make fused silica an ideal material for environments exposed to rapid temperature changes and extreme heat.
Key Applications of Fused Silica
1. Foundry and Investment Casting Industry
Fused silica is widely used in foundry applications, especially for:
- Investment casting shells
- Precision casting molds
- Ceramic cores
- High-temperature binders
Its low thermal expansion helps prevent cracking and deformation during metal pouring, ensuring excellent surface finish and dimensional accuracy.
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2. Refractory Materials
In refractory applications, fused silica is commonly used to produce:
- Neutral ramming mass
- Silica refractory bricks
- Furnace linings
- Tundish and ladle refractories
Fused silica refractories perform exceptionally well in steel furnaces, induction furnaces, and glass melting furnaces due to their resistance to thermal shock and corrosion.
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3. Glass and Ceramic Industry
Because of its high purity and transparency potential, fused silica is also used in:
- High-grade glass production
- Technical ceramics
- Kiln furniture
- Electronic-grade components
Its chemical stability ensures consistent performance in demanding production environments.
Advantages of Using Fused Silica
Choosing fused silica as a raw material brings several long-term benefits:
- Longer Service Life: Reduced cracking and wear
- Lower Maintenance Costs: Fewer shutdowns and repairs
- Improved Product Quality: Better thermal performance
- High Reliability: Stable performance under extreme conditions
These advantages make fused silica a cost-effective solution for high-temperature industrial processes.
Fused Silica Grades and Custom Solutions
Fused silica is available in different grades and particle sizes, including:
- A Grade Fused Silica
- B Grade Fused Silica
- Fine powder, sand, and granular forms
We provide customized solutions based on customer requirements, including particle size distribution, chemical composition, and application-specific performance.
Why Choose a Reliable Fused Silica Manufacturer?
When sourcing fused silica, quality consistency and technical support are critical. A professional manufacturer ensures:
- Stable raw material supply
- Strict quality control
- International export experience
- Technical guidance for applications
Our fused silica products are exported worldwide and trusted by customers across Asia, Europe, South America, and the Middle East.
Conclusion
Fused silica is an essential material for high-temperature industries that demand stability, precision, and durability. Whether used in foundry casting, refractory linings, or glass manufacturing, fused silica delivers outstanding performance and long-term value.
If you are looking for a reliable fused silica supplier with proven expertise, we are ready to support your business with high-quality products and professional service.