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Bentonite is a clay derived from the alteration of volcanic ash. Bentonite is solid, so after extracting it from the deposits, it has to be crushed and dried to reduce its moisture content up to 15%.

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Grinding and drying of bentonite

After crushing and drying mined bentonite, this clay mineral is usually processed through a...

Milling and drying machine for fine powders

When you need to produce ultra-fine powders, the milling and drying process em...

Flash drying grinder for powders

Drying and grinding can be an important feature when trying to process products such as raw...

Automatic bag slitter

Unacceptably high dust levels can be generated whilst manual emptying and handling of bags, also produc...

Belt filter press

When a saturated slurry or sludge must be dehydrated in a continuous process municipal waste water treatmen...

High yield filter press

When a saturated slurry or sludge must be dehydrated with high yield results mining and other heavy i...

Side bar filter press

Production of dry cakes is required in a variety of industries and robust, low-cost side bar filtration...

Overhead filter press

To name just a few of the myriad applications for overhead filter presses:  industrial mineral industri...

Hygienic FIBC handling line

There are many considerations when handling FIBC’s (Flexible Intermediate Bulk Containers)...

Big bag discharge system

Dust emissions, product loss and product contamination are the main risks when discharging products ...

Light duty rotary dust valve

In some light industrial applications there is limited pressure differential for valve operation.

Heavy duty rotary valve

Handling powdered and granulated materials in pneumatic conveying systems requires consistent, safe v...

Dual channel plug diverter valve

Short switching times are often required when diverting or combining powder or granular sol...

Two-way flap type diverter valve

Routing powder, pellets or granules from a product source to two receiving points must be d...

Table roller mill

Table roller mills are robust and time-proven mills for soft to medium-hard mineral raw materials and indus...

Air flow classifier

Air-flow classifier (pneumatic product feed) for the fine classification of talc, calcium carbonate, bent...

Circuit-air classifier

For high throughputs, with a fineness range of approx. d97 = 32 µm – 200 µm. Ideal for use in th...

Pelleting press with overhead drive

Production of certain pelletized products requires working with output products of a pa...

Small scale pelleting press

Many industries require reliable pelletizing equipment with smaller scale production capacities....

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What is bentonite clay?

The two different names, bentonite or montmorillonite clay, come from the places where it was used and found for the first time, Fort Benton, United States, and Montmorillon, France. It mainly consists of montmorillonite, a clay mineral belonging to a class of phyllosilicates called smectites which when in contact with a liquid start swelling. It can absorb water up to ten times its own weight. There are two types of bentonite according to the mineral mostly present in it: calcium bentonite and sodium bentonite.

Calcium bentonite clay for skincare products

Major deposits of calcium bentonite are in Greece, Australia, and Turkey. Compared to sodium bentonite, calcium bentonite has a low level of swelling and has a more greenish-yellow tone. Calcium bentonite is typically used in skincare as a face mask, for instance. It carries a negative charge that binds to the positive charge of the toxins in your skin to draw them out. It can also be ingested to remove the toxins for your body.

Sodium bentonite clay for industrial uses

Sodium bentonite is also known as swelling clay because of its high level of swelling. It has a gray color and is used in industrial applications. You can find it as drilling mud and as a binder in the foundry as well as a clarifying agent in the production of beer or wine. It acts as a water softener to remove calcium from hard water. Its high absorption ability makes it a useful natural sealant to line the base of landfills or to seal roads.

Bentonite processing – How to dry and grind your bentonite clay

Grinding and drying are key steps when processing bentonite. When bentonite comes out of the mines, it is solid and its natural moisture content is about 30%. Therefore, you need to dry it to reduce the moisture. A dryer brings the moisture down to allow the bentonite to be pulverized. A grinder usually is used to reduce the particle sizes of the material.

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