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[Chemical Knowledge]：Properties and Uses of Bentonite

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Bentonite is a chemical raw material with special properties. Because of its unique properties and wide range of uses, it has been widely used in chemical industry, building materials, metallurgy, agriculture and other fields. This article will detail the properties and uses of bentonite.

1. the properties of bentonite

1. Adsorption: bentonite has a strong adsorption capacity, can absorb a variety of organic and inorganic substances, such as heavy metal ions, pigments, oils and fats. This adsorption capacity makes bentonite play an important role in various chemical processes.

2. expansion: bentonite has good expansion properties, in water or other liquids can quickly expand to form a gel-like substance. This property makes bentonite widely used in building materials, metallurgy and other fields.

3. ion exchange: bentonite contains a large number of cations, ion exchange reaction can be carried out. This property makes bentonite has a high value in the treatment of wastewater, purification of substances and so on.

4. Stability: Bentonite has good thermal stability and chemical stability, and can maintain its properties under high temperature and acidic or alkaline environment. The use of

2. bentonite

1. Chemical industry: In the chemical industry, bentonite is mainly used as an adsorbent and catalyst. Using its strong adsorption properties, bentonite can be used to remove heavy metal ions, pigments and other harmful substances in wastewater. At the same time, bentonite can also be used as a catalyst carrier to improve the activity and stability of the catalyst.

2. Building materials: In the field of building materials, bentonite is mainly used as an additive to improve the performance and strength of concrete, mortar and other building materials. The expansion properties of bentonite make it can be used as an expansion agent to reduce the shrinkage and cracking of concrete.

3. Metallurgical field: In the field of metallurgy, bentonite can be used as an additive for casting sand to improve the wet strength and dry strength of the sand and improve the surface quality of castings. At the same time, bentonite can also be used as a binder for iron ore pellets to improve the strength and reducibility of the pellets.

4. Agricultural field: In the agricultural field, bentonite can be used as a soil conditioner to improve soil water retention and air permeability, and promote plant growth. At the same time, bentonite can also be used as an additive for animal feed to improve the absorption rate and utilization rate of feed.

In short, bentonite as an important raw material for chemical production has a wide range of uses and unique properties. In the future development, with the continuous progress of science and technology and the continuous expansion of application fields, the application of bentonite in various fields will be more extensive.

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