It is good to know that kaolin is a white rock mineral from the group of clay minerals and is composed of two quadrilateral layers of silica and the other octahedral layer of hyalomintonium. Kaolin may not be of much value compared to other rocks, but due to the above properties Its extravagance, its abundant use, and its white color are often referred to as white gold. Some of its applications require particles, dyes, and transparency, but in some cases this is not the case. It is similar. But most of the use and application of kaolin is in fillers and spreaders or special polishes and bleaches or even to create resistance to abrasion and hardening. It is also due to its many properties and capabilities in other fields such as paper making, ceramics, oil, inks, paints, refractories, rubber, pharmaceuticals, fiberglass, refractory industries, construction materials and plaster, insecticides, food and so on.It is used in agricultural industries.In Iran, this mineral material is used in chamotte bricks and internal covering of furnaces, heating boilers and tiles.It is interesting to know that about 50% of kaolin is used in paper making and as a coating or 30% in the ceramic industry. Also 20% is used in rubber and paint. The absorbency of the compound as well as its good coverage and transparency in the paper are some of the advantages of using kaolin in this industry. Kaolin is formed when anhydrous aluminum silicate in feldspar rocks such as granite changes due to weathering or hydrothermal process. Quartz and mica remain relatively unchanged while feldspar becomes kaolin. Floating airflow clay is a dry hydrated kaolin isolated to reduce impurities and control particle size distribution. The coating industry uses only a small amount of floating clay due to its weaker color and more wear due to mineral impurities compared to water-washed grades. Calibrated clay is made of washed and bleached kaolin during a heat treatment. Fully calcined clays are produced with maximum brightness and turbidity in the range of 1150-1000 �° C. Due to the importance of the effect of kaolin on coatings, these clay models are offered in more types than other applied silicate fillers. Also, these clays are produced through chemical modification. Kaolin is used in various industries due to its unique physical and chemical properties. Shape, size, particles, color, softness and non-abrasiveness are physical properties that a Some applications require particles, color, and clarity, but in some cases this is not the case. Similar.
