Calcined Kaolin
Al₂O₃·2SiO₂
Thermally processed kaolin supplied for refractories, paper opacity, and high-performance ceramic and coating applications.
Overview
Calcined kaolin is produced by firing raw kaolin at 600–1100 °C, eliminating hydroxyl groups to create a structurally transformed alumino-silicate with enhanced hardness, whiteness, and opacity. It outperforms raw kaolin in refractory applications, coated paper, and high-brightness coatings, offering significantly reduced LOI and improved abrasion resistance.
Source Details
Source Name
Calcined Kaolin Supply Network
Region / Country
Multi-Origin, India / Turkey / Brazil
Dispatch Ports
Mundra, Kandla, Izmir
Sourcing Note
Available in metakaolin and fully calcined grades. Supply structured by Al₂O₃, brightness, and particle size.
Quality Parameters
| Parameter | Typical Range / Content |
|---|---|
| Al₂O₃ | 40–45% |
| SiO₂ | 50–55% |
| Brightness (ISO) | 88–92%+ |
| LOI | <1% |
| Fe₂O₃ | As per grade |
* Final chemistry, sizing, and commercial grade are supplied subject to confirmed assay, origin, and buyer application.
Applications
Refractory Castables
Key raw material in refractory castables, bricks, and kiln furniture.
Paper Coating Pigment
Superior opacity and brightness as a coating pigment in coated paper and board.
Ceramics
Used in tiles, sanitaryware, and technical ceramics for controlled firing behaviour.
Industries Served
Technical Documentation
Access detailed technical specifications, safety data sheets (SDS), and certificate of analysis (COA) examples.
Commercial Details
Packaging Options
- 25 kg bags
- 50 kg bags
- 1 MT jumbo bags
Export Availability
Containerized export available
Contact Sales
Request Calcined Kaolin Supply
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