Active white clay

Clay is an important mineral raw material. It is composed of various hydrated silicates and a certain amount of alumina, alkali metal oxides, and alkaline earth metal oxides, and contains impurities such as quartz, feldspar, mica, sulfate, sulfide, carbonate, etc. Clay minerals are small and often within the colloidal size range, appearing as crystals or non crystals. Most of them are sheet-like, while a few are tubular or rod-shaped. Clay minerals have plasticity after being moistened with water. They can deform under low pressure and maintain their original state for a long time. Moreover, they have a large specific surface area and negative charge on the particles, thus exhibiting good physical adsorption and surface chemical activity, as well as the ability to exchange with other cations.