Silica Material Portfolio
Compare crystalline silica powder, fused silica powder and sand, cristobalite, ultrafine silica and surface-treated silica for industrial applications.
PRODUCT FAMILIES
Start with the material family that matches your process, then compare grades, particle sizes, properties and applications.
Crystalline silica powders for coatings, silicone rubber and electronic packaging.
Low-expansion fused silica powders, sand and granules for casting, refractory and ceramics.
High-whiteness cristobalite flour, powder and sand for casting, coatings and engineered compounds.
Clean quartz raw material and refined particles for purity-sensitive industrial applications.
Refined translucent and porcelain-white quartz sand grades for casting, ceramics and refractory uses.
Precision quartz rods, plates and engineered quartz components for technical applications.
Clear quartz tubes and solid rods for thermal processing, optical systems and precision equipment. Available in custom dimensions with polished or application-specific finishing, dimensional inspection and protective export packing. Send your drawing or required size for grade and tolerance confirmation.
Refined 40–140 mesh high-purity quartz sand for optical quartz components and electronic quartz materials. Available in ultra-low-alkali and controlled-aluminium grades, with SiO₂ from 99.9% to 99.999% and Fe₂O₃ up to 0.001%. Batch inspection and sealed paper-drum packing support stable industrial processing.
High-purity quartz sand processed from selected natural crystal or premium quartz for quartz glass and crucible manufacturing. SiO₂ 99.9–99.999%, Fe₂O₃ ≤0.001%, ultra-low alkali potential and application-specific grading available by confirmed specification.
High-purity fused quartz sand for electrical insulation compounds and refractory formulations. Amorphous silica with low thermal expansion, controlled granular grades and multiple particle-size options for application-specific evaluation.
Natural crystalline quartz sand processed from selected quartz stone for glass, ceramic and foundry formulations. Mohs hardness 7, milky-white to translucent appearance and particle-size grading available to agreed requirements. Contact Changtong for grade-specific chemistry, sizing, samples and quotation.
Calcined PV silica powder prepared for shoe mold and related precision mold-making processes where consistent mineral chemistry, hardness and powder control matter.
High-purity fused silica powder for investment casting, refractory, ceramic and epoxy applications. Produced from selected crystalline silica through high-temperature fusion, with low thermal expansion, excellent thermal shock resistance and multiple particle-size options available.
Amorphous fused silica powder for investment casting with low thermal expansion, high SiO2 purity, and dust-removed, size-controlled particles for reliable shell building.
Clean, high-purity fused silica sand selected for technical ceramics, fused silica rollers, crucibles and advanced refractory products.
White cristobalite flour at G325 mesh with SiO2 above 99.6% for precision casting, exterior and traffic paints, silicone rubber, and specialty ceramics.
Graded cristobalite sand for foundry and refractory applications, with controlled particle-size behavior, high whiteness and a stable mineral feedstock for application trials.
High-purity 325 mesh fused silica powder for refractory, technical ceramics, epoxy molding compounds, electrical insulation, powder coatings, resins, foundry and precision-casting applications.
Technical Resources
Use practical guides to compare silica materials, convert mesh to microns and prepare clearer specifications for your application and RFQ.
Learn how cristobalite flour is produced through phase conversion, grinding, classification, and particle-size control.
Compare fused silica, cristobalite, and crystalline quartz by structure, properties, process fit, and purchasing questions.
Learn how to evaluate fused silica for investment casting using chemistry, particle size, slurry behavior, and firing requirements.
