At Ze Xi Mineral Co., Ltd., fused silica is produced from fused quartz blocks through a controlled process of crushing, grading, magnetic separation, and fine screening.
The final product features exceptional thermal stability, low thermal conductivity, and consistent particle distribution — making it ideal for use in crucibles, technical ceramics, refractories, and precision casting materials.
Chemical Composition :SiO₂ ≥ 99.8 % (grains), ≥ 99.7 % (powder)
Impurities:Al₂O₃ < 500 ppm, Fe₂O₃ < 300 ppm, Na₂O < 100 ppm, K₂O < 100 ppm
Appearance：Colorless transparent lumps, grains, or white powder
True Density:~ 2.21 g/cm³
Hardness (Mohs):~ 7.0
pH Value:~ 6.0
Grain Sizes:From 0–100 mm to –600 mesh (fine powder)
Packing:1200 kg / 1250 kg jumbo bags with pallet
Why Is Fused Silica Important?
Excellent Thermal Stability – Maintains its structure and strength even under rapid temperature changes.
Low Thermal Expansion – Ensures dimensional stability in high-temperature applications.
High Chemical Purity – Low levels of Fe₂O₃, Al₂O₃, and alkalis make it chemically inert and electrically resistant.
Versatile Grain Sizes – Available in multiple particle sizes for different industrial processes.
Wide Range of Applications – Commonly used in ceramics, refractories, crucibles, casting, and glass industries.
Typical Applications
Crucible Raw Material – Its high purity and heat resistance make it ideal for quartz and semiconductor crucibles.
Refractory Industry – Used in the production of monolithic refractories and shaped products that require high thermal shock resistance.
Investment Casting – Ensures precise mold surfaces and excellent finish quality.
Technical Ceramics & Glass – Enhances strength, transparency, and thermal insulation performance.
Abrasives & Coatings – Utilized for its hardness and stability.
How to Choose the Right Fused Silica
When selecting fused silica for industrial applications, consider:
Purity Level – Higher SiO₂ content (≥ 99.8%) ensures better performance in high-end applications.
Impurity Control – Low Al₂O₃ and Fe₂O₃ content improves chemical stability and minimizes contamination.
Grain Size Distribution – Choose fine powders for casting and ceramics; coarse grains for refractories and crucibles.
Moisture Protection – Use sealed jumbo bags and dry storage conditions to prevent contamination.
Reliable Supplier – Partner with a manufacturer that offers stable quality control and technical support.
Why Choose Ze Xi Mineral
At Ze Xi Mineral, we focus on high-purity fused silica production with strict quality control from raw material to finished product.
Our advantages include:
Consistent quality and low impurity levels.
Multiple grain size options from coarse to fine powder.
Advanced crushing, grading, and magnetic separation processes.
Professional packaging and safe delivery worldwide.
Technical support and customized solutions for various industries.
Conclusion
Fused silica is a premium industrial material known for its purity, stability, and versatility.
With excellent resistance to heat and corrosion, it plays a key role in refractory, ceramic, glass, and casting industries.
If you are searching for a trusted fused silica manufacturer, Ze Xi Mineral Co., Ltd. is ready to provide you with high-performance materials and reliable service.
👉 Contact us today to learn more or request a quotation!
📩 info@zeximineral.com
