How to purify kaolin clay and remove the iron content inside
Kaolin, as an important industrial raw material, its purity is directly related to the quality and performance of the product. Therefore, kaolin purification has become a key link. So, what are the methods for kaolin purification? What equipment is needed?
In terms of purification methods, physical method, chemical method and high-temperature calcination method have their own characteristics. The physical method separates impurities by differences in physical properties such as particle size and density. The chemical method uses chemical reactions such as acid leaching to remove specific impurities. High-temperature calcination can remove some impurities and improve whiteness.
In terms of equipment, centrifugal concentrators, hydrocyclones, mills, kaolin calcining kilns, etc. are all important tools for purifying kaolin. Centrifugal concentrators can effectively remove high-density impurities, and hydrocyclones can achieve the purpose of washing and grading. Mills can grind kaolin to the required fineness to further improve purity.
In short, kaolin purification is a complex and delicate process, and appropriate methods and equipment need to be selected to ensure product quality and performance.