Product Description
Calcined Kaolin is produced by calcining high-purity kaolin at controlled temperatures to obtain excellent whiteness, optimized particle size distribution, low impurity levels, and high chemical inertness. It is widely used in ceramics, high-end coatings, papermaking, refractory materials, rubber, plastics, and cosmetics.
Key Properties
- High whiteness and brightness
- Fine and controlled particle size distribution
- Low abrasion, suitable for high-speed papermaking & coatings
- Excellent opacity and tinting strength
- Enhanced chemical inertness
- High thermal stability after calcination
- Good reinforcement effect in polymers
Typical Applications
Ceramics (Body & Glaze)
Improves whiteness and vitrification; Enhances mechanical strength
Paper Coating Grades
Improves printability, smoothness, and ink holdout; High opacity for premium coated paper
High-End Coatings & Paints
Excellent gloss, hiding power and matt finish control
Refractory Materials
Used as alumina source, improves thermal stability
Rubber & Plastics
Reinforcing filler, improves wear resistance and dispersion
Cosmetics
Soft skin feel, high purity, excellent whiteness
Technical Specifications
Chemical & Physical Properties
| Application | Whiteness (%) | Al₂O₃ (%) | Fe₂O₃ (%) | Particle Size (−2 μm, %) |
|---|---|---|---|---|
| Ceramics (Body) | ≥75 | ≥34 | ≤0.8 | ≥70 |
| Papermaking (Coating) | ≥85 | ≥35 | ≤0.5 | ≥80 |
| High-End Coatings | ≥90 | ≥38 | ≤0.3 | ≥90 |
| Refractory Materials | ≥65 | ≥38 | ≤1.0 | ≥60 |
| Rubber & Plastic Compounds | ≥75 | ≥30 | ≤1.2 | ≥50 |
| Cosmetics | ≥92 | ≥35 | ≤0.1 | ≥95 |
Available Grades
Customized grades available on request:
Available Particle Sizes
Aggregates (mm)
Powders (mesh)
−2 μm ≥50–95% | Tailored PSD available based on customer requirements
Customized particle size distributions for ceramics, coatings, and refractory applications are available.
Advantages Compared with Hydrous Kaolin
- Higher brightness
- Better opacity / hiding power
- Lower abrasion
- Improved rheology in coatings
- Thermal inertness
📦 Packaging
25 kg paper or woven bags | 500–1000 kg jumbo bags
Palletized and shrink-wrapped (optional)
(Custom packing available)
⚠ Storage & Handling
- Keep dry and avoid moisture absorption
- Store in ventilated warehouse
- Reseal bags after opening