Kaolin belongs to nonmetallic ore, a kind of clay whose main components are kaolin-group minerals. This name is from a Chinese village called Kaolin where the villagers use the white clay (kaolin) to produce porcelain. Kaolin clay is white, smooth and soft. It has good plasticity and fire resistance capacity. The mineral components of kaolin are kaolinite, halloysite, hydromica, illite, montmorillonite, quartz and feldspar.
In terms of different applications and output finenesses, the operational mills may vary from one to another.