Kaolin is a common clay mineral in nature and a very important non-metallic mineral. Because of its white color, it is also called dolomite. The pure kaolin is white, fine, soft and soft, with good plasticity, fire resistance, suspension, adsorption and other physical properties. The world is rich in kaolin resources, with a total amount of about 20.9 billion tons, which is widely distributed. Countries such as China, the United States, the United Kingdom, Brazil, India, Bulgaria, Australia, Russia and other countries have high-quality kaolin resources. my country's kaolin mineral resources rank among the top in the world, with 267 proven mineral deposits and proven reserves of 2.91 billion tons.
With the continuous economic development, the role of kaolin in social production has become increasingly prominent, and it is an essential mineral raw material for national economic construction. It is also widely used in industrial sectors such as rubber, plastics, refractory materials, petroleum refining, and cutting-edge technology in agriculture and national defense.
1. Papermaking industry: Kaolin is used in papermaking, which can give the paper good covering performance and good coating gloss performance. It can also increase the whiteness, opacity, smoothness and printability of the paper, greatly improving the quality of the paper.
2. Ceramic industry: Kaolin is used in ceramics field, which is beneficial to the formation of mullite and improves its chemical stability and sintering strength.
3. Petrochemical industry: Kaolin can be used as a catalyst filler for petroleum cracking. Kaolin has high purity, which is beneficial for making catalyst carriers.
4. Coating industry: The main role of kaolin in paint is filler and pigment substitute.
5. Rubber field: Nano-grade kaolin can improve rubber's performance in terms of elasticity, flex resistance, dimensional stability, compression deformation and other properties.
6. Agricultural field: The application of kaolin aqueous solution in fruit trees, grains, vegetables and other agricultural fields can greatly reduce production costs and reduce the amount of pesticide residues in crops.