China Clay/Kaolin Powder
China Clay is a clay mineral, part of the group of industrial minerals, with the chemical composition Al2O3.2SiO2.2H2O. It is a layered silicate mineral, with one tetrahedral sheet linked through oxygen atoms to one octahedral sheet of alumina octahedra. Rocks that are rich in kaolinite are known as china clay, white clay, or kaolin.
China Clay is Hydrated Aluminium Silicate. It is a soft, earthy, white colour mineral. It is widely used as filler in many industries.
Chemical Analysis of China Clay Powder:
Al2o3 30 - 38 %
Sio2 40 - 45 %
LOI 10 - 13 %
Uses For China Clay
China Clay is used in ceramics, medicine, coated paper, as a food additive, in toothpaste, as a light diffusing material in white incandescent light bulbs, and in cosmetics. It is generally the main component in porcelain.
It is also used in paint to extend titanium dioxide (TiO2) and modify gloss levels; in rubber for semi-reinforcing properties; and in adhesives to modify rheology.
The largest use is in the production of paper, including ensuring the gloss on some grades of paper. Commercial grades of kaolin are supplied and transported as dry powder, semi-dry noodle or as liquid slurry.
Applications of China Clay / Kaolin Powder:-
Paper as Filler
Fiber Glass as Filler