ZE XI MINERAL CO., LTD
Calcined Cristobalite Powder (GORESIL)
GORESIL (Calcined Cristobalite Powder) is a high-temperature polymorph of silicon dioxide (SiO₂), produced by converting selected high-purity quartz in a rotary kiln at temperatures above 1500°C under catalytic assistance. The material features stable tetragonal crystal structure, excellent weather resistance, and strong thermal shock resistance.
Main Applications
GORESIL is widely used in enamel frit and glaze formulations, refractory raw materials, ceramic and pottery production, industrial grinding and polishing, as well as glass and coating industries.
Technical Specifications
| Item | Specification |
|---|---|
| SiO₂ | 99.5% min |
| Whiteness | 95–98% |
| Crystal Phase | Tetragonal (Cristobalite) |
| Hardness (Mohs) | ~6.5 |
| Density | 2.2–2.3 g/cm³ |
Physical Properties
Appearance: Pure white fine powder
Solubility: Insoluble in water
Weather Resistance: Excellent
Thermal Shock Resistance: Good
Available Mesh Sizes
300 Mesh · 400 Mesh · 600 Mesh · 800 Mesh · 1250 Mesh · 2000 Mesh · 5000 Mesh · 8000 Mesh
Packaging & Storage
Packaging: 25 kg bags or 1 MT jumbo bags.
Storage: Store in a cool, dry place. Avoid moisture and contamination.
Shelf Life: Unlimited under proper storage conditions.
GORESIL Functions in Enamel Glaze
Acts as a refractory raw material, widens firing temperature range, prevents over-firing, improves glaze permeability and breathability, enhances structural stability during multiple firings, and reduces crazing and fish-scale defects.