**Chemical Composition**
| Component | Grains (%) | Powders (%) |
|------------|-------------|--------------|
| SiO₂ | 99.8 | 99.8 |
| Al₂O₃ | < 0.02 | < 0.03 |
| Fe₂O₃ | < 0.02 | < 0.03 |
| TiO₂ | < 0.01 | < 0.01 |
| CaO | < 0.01 | < 0.01 |
| MgO | < 0.02 | < 0.02 |
| K₂O | < 0.01 | < 0.01 |
| Na₂O | < 0.02 | < 0.02 |
| C | < 0.01 | < 0.01 |
| Quartz (SiO₂) | 0 | 0 |
| Cristobalite (SiO₂) | < 0.01 | < 0.01 |
**Structure:** Amorphous (fully fused)
**Specific Gravity:** 2.2
**pH:** 6.5
**Key Features**
- 99.8% SiO₂ high-purity fused silica
- Low alkali and iron content
- Excellent thermal shock resistance
- No crystalline quartz or cristobalite
- Available in 20–50 mesh grains and fine powders
**Applications**
- Investment casting shell materials
- Refractory linings and foundry coatings
- Precision ceramics and glass fillers
About Ze Xi Mineral
Ze Xi Mineral Co., Ltd. supplies high-quality fused minerals, including Fused Silica, Fused Alumina, Fused Spinel, and Tabular Alumina, serving global foundry and refractory industries.
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