Kaolin grades classified into three main groups.

• White Ball Kaolins (Clays),

• Hydrous Kaolins

• Spray Dried Kaolins

• Meta Kaolins  

• Calcined Kaolins.

• Chamottes  

 

Kaolin (China Clay) is nearly White in colour derived

from mineral Kaolinite. Chemical Formula is composed

from clusters of Al2O3.2H2O.2H2O
 

 Natural Kaolins also classified in two main groups, primary and secondary as a raw material. Primary kaolins are found naturally where they exist.   Secondary Kaolins are washed and deposited away from primary kaolins. Lower impurities and high brightness are the main parameters to   differentiate   secondary kaolins from primary kaolins. Selected and washed secondary kaolins are used to produce hydrous kaolins on industrial scale.