Chamotte is a high-quality hard refractory clay produced in Zibo, Shandong Province, China. The standard Al2O3 content of chamotte ore is 38%, after calcination the Al2O3 content is about 44%, and Fe2O3<2%. The composition is stable, the texture is uniform, the structure is dense, and the section is shell-shaped and white. It is used to produce high-quality clay refractory materials. The technical term is the first-grade hard clay clinker, the main chemical components are AL2O3 and SiO2, accompanied by a small amount of Fe2O3 and trace amounts of Na2O and K2O. The main mineral is kaolin.
The chamotte we call generally refer to CALCINED CLAY. . The content of Al2O3 in the calcined chamotte is about 44%, and the content of Fe2O3 is not more than 2%. The composition is stable, the texture is uniform, the structure is dense, and the section is shell-shaped.
The common colors of chamotte after high temperature calcination are: pure white, light gray, light yellow brown, and a small amount of brown iron sheet.