Technical Strength and Quality Details
Production Flow
High-purity quartz production involves a complex process and requires highly advanced technical expertise.
Step 1
Use quartz sand
Step 2
Soak in dilute hydrofluoric acid (HF)
Step 3
Rinse to remove acid residues
Step 4
Air-dry
Step 5
Calcine
Step 6
Soak in aqua regia
Step 7
Filter
Step 8
Grind
Step 9
Filter off residual solution
Step 10
Water quench
Step 11
Rinse with deionized water
Step 12
Dry
Step 13
Get high-purity quartz sand
Quality control system
Test items (example)
- product name:High-purity silica powder
- surface:White powder
- density: 2.65 +- 0.5g/cm³
- particle size: 0.5-100 micrometer
- purity: 99.99%
- Mohs hardness: 6-7
- Specific surface area: 0.1-10 m²/g
- thermal conductivity: 0.5-1 W/(m·K)
- Dielectric constant DK: 4.65 εr
- Dielectric loss Df: 0.0018 tgδ
- linear expansion coefficient: 5*10^-6 1/K
- Refractive index: 1.48-1.55
- SiO₂: 99.99%
- Al₂O₃: 0.3%
- CaO: 0.01%
- Fe₂O₃: 0.02%
Quality System
- Product sales, complaints, adverse reactions and recalls
- Quality policy/objectives/organization/personnel
- Verification
- Production Management
- Materials and Products
- Equipment
- Factory buildings and facilities
- Quality Management System
