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Bentonite encyclopedia knowledge
Release time:
2024-05-27
Bentonite is also called spot off rock, bentonite or bentonite rock, accurate name can also become montmorillonite clay, montmorillonite is also called microcrystalline kaolin. China's development and use of bentonite has a long history, the original is only as a detergent. Really widely used but only a hundred years of history. The United States was first found in the ancient strata of Wyoming, a yellow-green clay, which can expand into a paste after adding water. Later, people referred to all clays with this nature as bentonite.
On the mineral composition of bentonite
The main mineral composition of bentonite is montmorillonite-bede stone series minerals, followed by a small amount of other clay minerals, such as illite, kaolinite, ground start, halloysite, chlorite, hydroaluminite, attapulgite and so on.
Classification of bentonite
Bentonite minerals in nature are divided into the following specifications according to the percentage of exchangeable cations in the total exchange of particles: sodium bentonite, sodium calcium bentonite, calcium sodium bentonite, calcium bentonite, magnesium calcium bentonite, calcium bentonite and lithium bentonite.
According to the different post-processing technology of bentonite, it can also be divided into organic bentonite, inorganic bentonite, activated clay and other types.
Industrial Application of Bentonite
With the development of science and technology and the maturity of research and development in various industrial fields, bentonite is more and more widely used in various industrial fields:
* Drilling, foundation pile, subway ground wall mud formula
* Binders for metallurgical casting
* Chemical decolorant, environmental protection treatment agent
* Feed and pharmaceutical disinfectant, adsorbent
* Binders for refractory and ceramic materials
* Other building materials additives
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