Kaolin
Overview
Kaolin is a soft, white clay mineral mainly composed of kaolinite.
Because of its high whiteness, fine particle size, good oil absorption, chemical stability, and dispersion properties, kaolin is widely used in many industrial applications.
Applications
- Ceramics & Tiles — ceramic bodies, porcelain, and glazes
- Paints & Coatings — as a filler and extender
- Paper Industry — improving brightness, opacity, coating performance, and printability
- Plastics & Polymers — as a mineral filler and functional additive
- Rubber Industry — as a reinforcing and mineral filler
- Adhesives & Sealants
- Fiberglass
- Cement & Construction Materials
- Foundry Industry
- Chemical Industry
- Selected agricultural and specialty applications
Technical Specifications
| Parameter | Typical Specification |
|---|---|
| Kaolinite | > 80% |
| SiO₂ | 45 – 55% |
| Al₂O₃ | 30 – 40% |
| Fe₂O₃ | < 1.0% |
| TiO₂ | < 2.0% |
| CaO | < 1.0% |
| MgO | < 1.0% |
| K₂O + Na₂O | < 3.0% |
| Moisture | < 1.0% |
| Whiteness | > 85% |
| pH | 4 – 7 |
| Oil Absorption | According to grade |
| Particle Size | According to customer requirements |
Key Properties
High Whiteness
Suitable whiteness for applications in paints, paper, ceramics, and other color-sensitive products.
Fine Particle Size
Fine and consistent particle size provides good surface coverage and dispersion in industrial formulations.
Low Iron Content
Low iron content makes the material suitable for applications requiring high brightness and lighter final colors.
Chemical Stability
Kaolin offers good chemical stability under a wide range of industrial processing conditions.
Available Grades
Depending on the final application, kaolin can be supplied in different grades:
| Grade | Main Application |
|---|---|
| Ceramic Grade | Tiles, ceramics, porcelain, and glazes |
| Paper Grade | Paper manufacturing and paper coating |
| Paint Grade | Paints and coatings |
| Plastic Grade | Plastics and polymers |
| Rubber Grade | Rubber products |
| Industrial Grade | General industrial applications |
Packaging
- Bulk
- 25 kg Bags
- Jumbo Bags
- Customized Packaging
Note: The specifications above are typical and may vary by source, grade, and intended application. Confirm final specifications and technical data based on actual product analysis and customer requirements.