Kaolin is composed of 2SiO2·Al2O3·2H2O, which is a kind of clay and claystone dominated by kaolinite clay minerals.White and delicate, soft soil, good plasticity and fire resistance and so on the physical and chemical properties, it is mainly used for paper making, ceramics and refractory materials, secondly used in paints, rubber filler, enamel glaze and white cement raw material, a few used in plastics, paint, paint, grinding wheel, pencil, daily cosmetics, soap, pesticide, medicine, textile, oil, chemical industry, building materials, national defense and other industries.
