Bentonite意思
Bentonite is a type of clay mineral that is formed from the weathering of volcanic ash. It is named after Fort Benton, Wyoming, in the United States, where it was first discovered. Bentonite is composed mainly of montmorillonite, a clay mineral that has the ability to absorb large amounts of water, making it swell and form a thick suspension called "bentonite mud."
Bentonite has a number of uses due to its unique properties:
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Drilling Mud: Bentonite is used as a drilling mud in the oil and gas industry to lubricate and cool the drill bit, as well as to seal off the drill hole and prevent fluid loss.
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Foundry: It is used in the casting of metals to absorb moisture and prevent hot metal from sticking to the sand mold.
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Civil Engineering: Bentonite is used as a sealant in the construction of canals, dams, and landfills, as it can form a very thin layer that is impermeable to liquids.
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Medicine: Bentonite is used as a detoxifying agent in medicine, as it can absorb toxins in the gastrointestinal tract and help to treat diarrhea and constipation.
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Cosmetics: It is used in cosmetics as a thickener and emulsifier, and is found in some facial clays and mud masks.
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Agriculture: Bentonite can be used as a soil conditioner to improve water retention and increase crop yields.
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Paints and Coatings: It is used as a thickener and suspension agent in paints and coatings.
Bentonite is also used in other applications such as animal feed, litter for pets, and as a binder in the production of pellets for fuel.