What is the relationship between montmorillonite and bentonite? What's the difference?
Broadly speaking, montmorillonite is actually a kind of bentonite, but the content of montmorillonite is more than 80%. Moreover, it has been used for impurity removal and purification.Kaolin is a mainly kaolinite as the main component of clay minerals, is also a kind of aqueous silicoaluminate mineral, mainly white muddy, fine particles, like flour. Its chemical composition is fairly stable and is reputed as "universal stone"". The main raw material for making porcelain and pottery.The difference is that the spatial structure of montmorillonite and kaolinite: kaolinite is a hydrous aluminum silicate, three triclinic structure layer there is no cations or water molecules, strong hydrogen bonds (O-OH=0.289nm) to strengthen the connection between the structure layer. Montmorillonite, also called microcrystalline kaolinite, is a kind of layered and flaky crystalline silicate clay with monoclinic structure and cation or water molecules.
An hydrous aluminosilicate mineral with a small amount of alkali and alkaline earth metals. Its chemical formula is Nax (H2O) 4{(Al2 ~ xMg0.33) [Si4O10] (OH) 2}.Relationship between montmorillonite and montmorillonite:Bentonite is a kind of layered silicate clay mine with montmorillonite as its main component. International clay meeting held in 1972 in Madrid (AIPEA), proposed a broad meaning of bentonite, bentonite is that the Montmorillonite Mineral is the main component of rock is to use the content of montmorillonite clay or clay rock". Various properties of bentonite, is mainly produced by the properties of montmorillonite which contains, the differences in many literatures in smectitic and bentonite in the concept of no strict distinction, often with different purity bentonite are called montmorillonite or pristine montmorillonite.In order to distinguish the bentonite, the industrial montmorillonite is defined again, in the bentonite ore, when the content of montmorillonite is more than 80%, it is called montmorillonite. High purity montmorillonite can be obtained after purification of bentonite ores.
According to the causes and use transliteration, also known as bentonite, bentonite etc.. Montmorillonite (also known as microcrystalline kaolinite, gum stone) as the main mineral component of clay rock - montmorillonite clay rock, often containing a small amount of illite, kaolinite and zeolite, feldspar, calcite and so on.
