High sodium-based content, high viscosity, strong adsorption, sodium-based soap clay

Non-metallic minerals with montmorillonite as the main mineral composition.

Bentonite is a non-metallic mineral with montmorillonite as the main mineral component, montmorillonite structure is composed of two silicon-oxygen tetrahedron sandwiched with a layer of aluminum oxygen octahedron composed of 2:1 crystal structure, due to the layered structure formed by montmorillonite unit cells There are certain cations, such as Cu, Mg, Na, K, etc., and these cations and montmorillonite unit cells are very unstable, easy to be exchanged by other cations, so it has better ion exchangeability. Foreign countries have been applied in more than 100 departments in 24 fields of industrial and agricultural production, with more than 300 products, so people call it “universal soil”.

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Bentonite is also called porphyry, soap clay or bentonite. China has a long history of developing and using bentonite, which was originally only used as a detergent. (There were open-pit mines in the Renshou area of Sichuan hundreds of years ago, and locals called bentonite as soil flour). It is only a hundred years old. The United States was first found in the ancient strata of Wyoming, yellow-green clay, which can expand into a paste after adding water, and later people called all clay with this property bentonite. In fact, the main mineral component of bentonite is montmorillonite, the content is 85-90%, and some properties of bentonite are also determined by montmorillonite. Montmorillonite can come in a variety of colors such as yellow-green, yellow-white, gray, white and so on. It can be a dense block, or it can be loose soil, and it has a slippery feeling when rubbed with fingers, and the volume of the small block expands several times to 20-30 times after adding water, and it is suspended in water and pasty when there is less water. The properties of montmorillonite are related to its chemical composition and internal structure.


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