Project Description


Bentonite clay is created from volcanic ash and consists of smectite minerals, mostly montmorillonite, quartz, feldspar gypsum and more. It has a very fine and soft texture, and when mixed with water, it forms a paste. Bentonite has strong colloidal properties, and hence this paste is widely used. Other noteworthy properties include hydration, viscosity, thixotropy and quick water absorption, making this clay a valuable material in the ceramic industry.

Bentonite is an aluminium phyllosilicate clay composed of montmorillonite with the chemical formula
(Ca,Na)0,3(Al,Mg)2Si4O10(OH)2 ·n H2O.

Physical Properties

Bentonite clay exhibits the following physical properties, which is why it is used in a variety of applications in the ceramic industry:

Strong Colloidal Properties

Swells on Water Contact

Water Absorption

High Viscosity

High Plasticity

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Bentonite clay’s physical properties place it in a unique position in the clay industry and also promote its use for a broad set of applications:


Given bentonite’s good thermal stability, it is used as a special bonding material while preparing modling sand for producing steel, iron and other non-ferrous castings.


Iron ore fines are shaped into spherical pellets using bentonite as a binding agent during the production of iron ore pellets.

Skin Care

Bentonite clay’s absorbent power is handy in treating oily skin and acne breakouts, as the clay can help remove sebum or oil from the skin’s surface.

Water Systems

Apart from being used in retention systems for the overall control of stickers and pitch, bentonite is also used to enhance the efficiency of water systems.