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Bentonite clay is a natural clay material composed primarily of montmorillonite, a type of smectite mineral. It is formed from the weathering of volcanic ash and is known for its ability to swell when wet. This unique property makes bentonite clay highly versatile and useful in various industrial applications, particularly in the ceramics and minerals sectors.
| Chemical composition | Primarily montmorillonite with varying amounts of other minerals |
| Moisture content | Typically 10% to 15% |
| pH level | Usually between 7 and 9 |
| Particle size | Commonly ranges from 20 to 200 microns |
| Swelling capacity | Can swell up to 15 times its dry volume |
When selecting bentonite clay, consider the specific application requirements such as swelling capacity, moisture content, and particle size. It is important to specify the desired chemical composition and any necessary certifications, especially for food-grade or pharmaceutical uses. Buyers should also indicate the quantity needed, as this can affect pricing and availability.
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Bentonite clay is used in ceramics, drilling muds, and as a bonding agent in foundries.
Food-grade bentonite clay is safe, but always verify certifications.
It acts as a lubricant and stabilizer, preventing the collapse of boreholes.
Yes, it is often used for sealing landfills and in remediation projects.
Moisture content usually ranges from 10% to 15%.
Consider the specific requirements of your process; finer particles may be needed for certain applications.