Fused Silica
High-Purity Fused Silica Grade A Sand
Clean, high-purity fused silica sand selected for technical ceramics, fused silica rollers, crucibles and advanced refractory products.
Silica Material Portfolio
Industrial Silica Powder & Fused Silica Products
Compare crystalline silica powder, fused silica powder and sand, cristobalite, ultrafine silica and surface-treated silica for industrial applications.
PRODUCT FAMILIES
Choose the Right Silica Material
Start with the material family that matches your process, then compare grades, particle sizes, properties and applications.
Silica Powder
Crystalline silica powders for coatings, silicone rubber and electronic packaging.
Fused Silica
Low-expansion fused silica powders, sand and granules for casting, refractory and ceramics.
Cristobalite Series
High-whiteness cristobalite flour, powder and sand for casting, coatings and engineered compounds.
High-Purity Quartz
Clean quartz raw material and refined particles for purity-sensitive industrial applications.
Silica Sand / Quartz Sand
Refined translucent and porcelain-white quartz sand grades for casting, ceramics and refractory uses.
Quartz Products
Precision quartz rods, plates and engineered quartz components for technical applications.
All products
40 products
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Cristobalite Series
Calcined Cristobalite Powder for Silicone Rubber
M4000 calcined cristobalite powder for silicone rubber and selected industrial rubber compounds. The supplied batch report records D50 6.15 μm, SiO2 99.63%, Fe2O3 0.009%, moisture 0.1% and whiteness 94%. Final loading and performance must be qualified in the customer's polymer, filler and cure system.
Fused Silica
Fused Silica Powder for Refractory Castables
Fused silica powder for refractory castable development, supplied as a silica-based mineral raw material for thermal-cycling, dimensional-stability and high-temperature process evaluation. Grade, particle-size distribution, chemistry and supporting documents should be confirmed against the customer’s castable recipe, binder system, curing schedule and service conditions.
Surface-Treated Silica
Hydrophobic Silica Powder for EV Battery Encapsulation
Natural-quartz-derived silica powder with hydrophobic surface treatment for evaluation in EV battery module encapsulation, sealing and insulation resin systems. Controlled particle-size options support moisture, dispersion and viscosity studies; final grade and acceptance limits must be matched to the customer’s resin and process.
Cristobalite Series
Cristobalite Powder for Enamel Frits and Ceramic Glazes
Cristobalite powder for enamel frit and ceramic glaze formulations, processed from selected natural quartz through controlled calcination, grinding, classification and sieving. Grade, phase evidence, particle-size distribution and chemistry should be confirmed against the customer’s frit, glaze and firing process.
Silica Sand/Quartz Sand
Natural Quartz Sand for Glass, Ceramics and Foundry
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.
Cristobalite Series
Calcined Quartz Powder for Enamel Glazes
Calcined quartz powder for enamel glaze systems on metal and glass. Customer-side comparison reports reviewed 200 and 325 mesh residue, SiO2, Fe2O3 and an 8% glaze addition trial; final grade selection must be confirmed against the frit, substrate and firing process.
Cristobalite Series
High-Whiteness Cristobalite Powder for Epoxy and Refractory Applications
High-whiteness cristobalite powder processed from selected white natural quartz through high-temperature calcination, fine grinding, filtration, drying and sieving for epoxy compounds, casting, engineering plastics, silicone rubber, precision ceramics and paint formulations.
Cristobalite Series
Cristobalite Sand CSE-200 for Foundry and Refractory Applications
Graded cristobalite sand for foundry and refractory applications, with controlled particle-size behavior, high whiteness and a stable mineral feedstock for application trials.
Cristobalite Series
Cristobalite Flour for Jewelry Investment Casting
Cristobalite flour for jewelry investment casting, with white appearance, controlled M3000–M6000 options and particle-size data for wax-tree and flask evaluation. Confirm grade, packing and process requirements before ordering.
Cristobalite Series
Cristobalite Powder for Dental Investment Materials
Cristobalite powder for dental investment materials, produced from selected white quartz by calcination, grinding, filtration, drying and sieving. Review M3000–M6000 grades, whiteness 90–98 and the approved particle-size data for dental casting trials.
Crystalline Silica
Electronic Packaging Crystalline Silica Filler 2000–5000 Mesh
Crystalline silica filler for electronic packaging and epoxy encapsulation, with a 2000–5000 mesh reference, whiteness ≥92, Mohs 7, good mobility and anti-overflow focus. Confirm the resin system and acceptance limits before sampling.
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Technical Resources
Silica Selection & Processing Guides
Use practical guides to compare silica materials, convert mesh to microns and prepare clearer specifications for your application and RFQ.
Sep 17, 2026Industrial Application Guides
Silica Powder in Ceramic Membrane Supports: A Slurry-to-Sintering Screening Guide
Learn how to screen silica powder for ceramic membrane supports by linking phase, PSD, slurry behavior, forming, firing, porosity, permeability and strength.
Sep 17, 2026Silica Materials & Properties
Fused Silica vs Cristobalite in Electrical Encapsulation: Why Phase Comes Before Particle Size
A material-identity guide for electrical encapsulation that separates fused silica from cristobalite before PSD, grade and component-trial decisions.
Sep 17, 2026Industrial Application Guides
Cristobalite in High-Solids UV Coatings: A Dispersion and Surface Trial Plan
A controlled trial plan for cristobalite in high-solids UV coatings, covering powder data, dispersion, drawdown, cure conditions and finished-film checks.