Bentonite Powder
Bentonite is naturally occurring hydrated Aluminum Silicate. It has ability to absorb water several times its weight and give thick tropic fluid. Bentonite is an absorbent aluminum phyllosilicate, essentially impure clay consisting mostly of montmorillonite. There are different types of Bentonite, each named after the respective dominant element, such as potassium (K), sodium (Na), calcium (Ca), and aluminum (Al). Bentonite usually forms from weathering of volcanic ash, most often in the presence of water. Bentonite is highly plastic, sticky clay used in pottery both in clay bodies and in glazes.
Types
- Sodium Bentonite
- Calcium Bentonite
- Potassium Bentonite
Features
- High Bonding Strength
- High Grinding Efficiency
- High Water Absorption
Applications
- Ceramics Clay bodies: plasticity and MOR
- In glazes: Adhesion and suspension
- Sand Molding: Bonding, good flow ability, compatibility and thermal stability
- Water/oil well Drilling: Wall adhesion and increase water viscosity
- Cosmetics ingredients and Medical: Skin Treatment Pure washing by Ion exchange and Ingredient in a variety of pharmaceutical and cosmetic preparations.
- Food Grade (Water purification)
Different properties of Bentonite powder
Parameter | Na-Bentonite | Ca-Bentonite |
---|---|---|
pH | 8.0 ± 0.5 | 7.5 ± 0.5 |
Loss on Ignition, wt% | 6.5 ± 1.0 | 6.5 ± 0.5 |
Al2O3, wt% | 14.0 ± 1.5 | 15.0± 1.5 |
SiO2, wt% | 48.0 ± 6 | 46.0 ± 5 |
Fe2O3, wt% | 15 ± 3.5 | 15 ± 2.5 |
K2O+Na2O+MgO, wt% | 3.5 ± 0.5 | 3.0 ± 0.5 |
CaO, wt% | 2 ± 0.5 | 2 ± 0.5 |
MgO, wt% | 0.5 ± 0.5 | 0.5 ± 0.5 |
MnO2, wt% | 0.3 ± 0.1 | 0.2 ± 0.1 |
TiO2, wt% | 1 ± 0.5 | 2 ± 0.5 |
SO3, wt% | 1.0 ± 0.5 | 0.5 ± 0.5 |
Density, g/cm3 | 2.50 | 2.40 |
Specific gravity | 2.75 | 2.62 |
Liquid limit | 350% ± 25 | 380% ± 25 |
Plastic limit | 30% ± 2 | 35% ± 2 |