Product Description
GORESIL (Calcined Cristobalite Powder) is a high-temperature polymorph of silicon dioxide (SiO₂). Because natural cristobalite resources are insufficient for industrial demands, it is produced by converting selected high-purity quartz in a rotary kiln at temperatures above 1500°C under catalytic assistance.
The product appears as a pure white, fine powder. It is made from premium natural quartz, calcined at approximately 1500°C, followed by pollution-free grinding, magnetic separation, and precision classification. The powder has stable properties, with a silica content above 99.5% and a tetragonal crystal structure. Through high-temperature calcination and rapid cooling, the crystal structure is stably transformed, featuring excellent weather resistance, strong anti-settling ability, and good thermal shock resistance.
Main Applications
- Enamel frit and glaze formulations
- Refractory raw material
- Ceramic and pottery applications
- Industrial grinding and polishing
- Glass and coating industries
Technical Specifications
Chemical Composition & Properties
| 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
GORESIL is available in multiple mesh grades:
📦 Packaging & Storage
Packaging: 25 kg bags / 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 in enamel formulations
- Widens the firing temperature range of enamel glaze
- Prevents over-firing of enamel products
- Enhances the structural stability of the ground coat during multiple firings
- Improves glaze permeability and breathability
- Helps prevent crazing and fish-scale defects
- Provides better resistance to thermal shock and glaze stress