Calcination is one of the important processing technologies of kaolin. The calcined kaolin is used to remove structural water or crystal water, carbon and other volatile substances and become metakaolinite, which is called calcined kaolin. Calcined kaolin has the characteristics of high whiteness, small capacity, large specific surface area and pore volume, good oil absorption, covering and wear resistance, high insulation and thermal stability.
it plasticity, cohesiveness, certain drying strength, sintering property and whiteness after sintering of kaolin make it the main raw material for ceramic production; Flake shape, white, soft, highly dispersible. Its adsorbability and chemical stability make it widely used in paper industry. In addition, kaolin and calcined kaolin are also used in rubber, plastics, coatings, chemical and petroleum refining, building materials, refractories, pesticides, aerospace and other fields.