Kaolin clay comes in several types based on its purity, color, and processing methods. The most common types include washed kaolin,calcined kaolin ,meta kaolin
Washed kaolin is pure kaolin after cleaning and removing impurities. It is fine and white, and is suitable for many industries such as ceramics and paper making. Calcined kaolin is obtained by calcination of kaolin at high temperature. It has the advantages of high whiteness, strong activity and uniform particle size. It is widely used in papermaking, coating, paint and other fields to improve product performance. Metakaolin is anhydrous aluminum silicate formed by dehydration of kaolin at high temperature. It has high activity and is often used as concrete admixture, which can significantly improve the strength of concrete.