Industrial Minerals

Calcined Kaolin

Al2O3·2SiO2
Calcined Kaolin
Industrial MineralsCalcined Kaolin
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Product Overview

About Calcined Kaolin

Produced through controlled calcination to enhance brightness, opacity, hardness and thermal performance, Calcined Kaolin is used across coatings, polymers, rubber, paper, ceramics and construction-related formulations. Its low moisture content, fine particle size and good dispersion support hiding, reinforcement, dimensional stability and surface quality. In coatings and paper, it contributes to opacity and brightness, while in polymer, rubber and ceramic systems it supports reinforcement and thermal stability.

Advantages

Key Benefits

Why Calcined Kaolin is preferred across demanding industrial formulations.

Product advantage

High Brightness – Supports improved whiteness and appearance.

Product advantage

Good Opacity – Enhances hiding and coverage.

Product advantage

Fine Particle Size – Promotes uniform dispersion.

Product advantage

Low Moisture Content – Supports moisture-sensitive processing.

Product advantage

Good Reinforcement – Improves stiffness and dimensional stability.

Product advantage

High Thermal Stability – Supports performance at elevated temperatures.

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Product Range

Available Grades

01

HYPER Series A premium opacity and brightness line

ultrafine calcined kaolin.

02

GLAZEX Series

For ceramic glazes and matte coating systems, coarser versions are recommended.

03

Standard Calcined Kaolin

Multigeneral grades used for paints, paper and industry.

04

Fine to Coarse PSD Options

Customizable grinds to meet your hiding, texture or rheology requirements.

05

Specialty Blends

Calcined/hydrous kaolin hybrids that are engineered for performance.

Product Markets

Calcined Kaolin Markets

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Product Support

Frequently Asked Questions

Important information about Calcined Kaolin, grades and applications.

Calcined kaolin (metakaolin) is thermally treated kaolin clay with chemically bound water removed, resulting in higher brightness, hardness, and opacity.

Hydrous kaolin retains structural water and is softer, whereas calcined kaolin is anhydrous, more rigid, and provides superior opacity enhancement.

It functions as a TiO₂ extender, improving dry hiding, film build, and cost efficiency—especially in matt and satin coatings.

Yes. It is widely used in glazes and whiteware bodies to improve whiteness, thermal stability, and mechanical strength.

Yes. Multiple grades are available based on particle size, brightness, and end-use performance requirements.

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