white kaolin

White kaolin or soft white clay is a mineral and an essential element from the category of very pure micronized mineral powders in the manufacture of porcelain and ceramics and is widely used in the manufacture of paper, rubber, paint and many other industrial products.
Kaolin is named after a hill in China (Kao Ling) where it has been mined for centuries.
Kaolin or Chinese soil, called aluminum silicate, is a clay mineral with a chemical composition of Al2Si2O5(OH)4, which is layered and belongs to the silicate group, with a quadrangular sheet of silica (SiO4) that Through an oxygen atom attached to a sheet with eight faces of alumina (AlO6), it is octahedral.
Kaolin minerals include kaolinite, dickite, nacrite and halloysite.
The most abundant mineral of this group is kaolinite. All these minerals are aluminum silicate minerals that are crystallized in monoclinic or triclinic system.
One of the most important mineralogical characteristics of kaolin clays is their softness and non-abrasiveness. The hardness of kaolin on Mohr’s scale is about 2.5-2 mos. This softness is considered an advantage in its industrial applications.
Kaolin stone is classified into two groups of soft and hard bonds according to the type of bonds. One of the most important industrial characteristics of kaolin is its neutral chemical nature.
Kaolin is stable under industrial chemical conditions and in the pH range between 3 and 9.
The shape of the particles is another important characteristic of kaolin and determines its viscosity and coverage. Therefore, thin crystal plates provide good covering power and are better for covering paper and paint.
Therefore, it can be easily used as a pigment, coating and filler with other compounds.
The best kaolins have up to 20% impurities, which are processed in different ways in order to reduce these impurities, and in each method, a special type of this material is obtained.
 Kaolin is composed of a collection of very loose tiny crystals that mostly have a fixed shape and size, and the size used in the industry is less than two microns, and this is considered an economic advantage for it. Therefore, in the industry, the size of kaolin particles is expressed in terms of the weight percentage of particles smaller than two microns.
Kaolin is often used in industrial processes as a liquid or water polymer suspension. The viscosity of these liquid slurries is an important point. Basically, the value of kaolin is high due to its very low viscosity in solid percentages. This feature is unlike the feature of bentonite, which is used as a viscous material with high viscosity.

In short, the important characteristics of kaolin, which has led to its many uses, can be named as follows:

1- Chemically, it remains unchanged in a wide range of pH changes.
2- Having a white color that makes it usable as a colorant.
3- Having a very good covering property
4- Its softness and non-abrasiveness. It helps the health of the scalp
In such a way that the regular use of kaolin clay, by gently increasing blood circulation, causes the skin and hair to glow naturally.
5- little ability to conduct electricity and heat
6- Kaolin (aluminum silicate) is used to make agricultural poisons because it is a repellent substance that is often used as a coating because kaolin, by creating a white and uniform coating on plants, significantly reduces the damage caused by insects and the sun. burns and dehydration and in this way reduces or stops the pollution caused by excessive consumption of chemical poisons and as a result increases the productivity of the product.
In addition to reducing transpiration (as a result of affecting the function of the leaf openings) and the respiration of the leaves, premium white kaolin is able to reduce the temperature of the leaf surface by one to six degrees Celsius.

Tanin Alarade Co

As one of micronized mineral powders is also one of the largest and best suppliers and producers of very white and anti-acid Kaolin powder in Dubai for various industrial producers such as paint and coatings, tile and ceramics, and other industries.