How is bentonite applied in fertilizer production?
Adsorption is a natural phenomenon in all solid matter. The phenomenon that we gather certain molecules on the surface of bentonite is called adsorption of bentonite. This adsorption has been widely used in industry. Mud parameters such as adsorption characteristics of drilling mud often using bentonite minerals to adjust for different purposes, such as adding filtration reducing agent, is through the end of polymer adsorbed on the surface of bentonite particles, the other end is soluble in water between the bentonite particles and water molecules to produce a kind of indirect contact. A bridging effect is formed, which reduces the free water in the slurry, changes the performance parameters of the slurry, and achieves the purpose of reducing the filtration rate.
Bentonite is also called bentonite, bentonite and bentonite rock. The development and use of bentonite in China has a long history, but it was only used as a kind of detergent. (in Sichuan Renshou area, there was an open-air mine hundreds of years ago, and the local people called bentonite as earth powder). What is widely used but only a few hundred years of history. The earliest discovery in the United States was the yellowish green clay in Wyoming's ancient state, which expanded into a paste after adding water. Later, people referred to all these clays as "bentonite". In fact, the main mineral composition of montmorillonite is montmorillonite, the content is 85-90%, and some properties of bentonite are also determined by montmorillonite. Montmorillonite can be a variety of colors, such as yellow green, yellow white, gray, white and so on. Can be dense, massive, or for loose soil, with fingers rubbed when there is a sense of sliding, small pieces of water after the volume of swelling several times to 20-30 times, in the water as a suspended shape, less water when it was mushy. The properties of montmorillonite are related to its chemical composition and internal structure.
The bentonite is non metallic mineral montmorillonite as the main mineral composition, structure of montmorillonite is 2:1 type crystal structure of [1] consists of two silicon oxygen tetrahedron sandwiching a layer of aluminum eight surface body composition, due to the layered structure of montmorillonite crystal cell formation in the presence of some cations, such as Cu, Mg, Na, K, and the cation with montmorillonite crystal cell function is not stable, easy to by other cation exchange, so it has good ion exchange property. Foreign countries have already applied 24 fields and more than 100 departments in industry and agriculture. There are more than 300 products, so people call it "omnipotent soil"".
