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Bentonite quarry

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Bentonite Identity, physical and chemical properties

Bentonite is a rock formed of highly colloidal and plastic clays composed mainly of montmorillonite, a clay mineral of the smectite group, and is produced by in situ devitrification of volcanic ash. In addition to montmorillonite, bentonite may contain feldspar, cristobalite, and crystalline quartz. The special properties of bentonite are an ability to form thixotrophic gels with water, an ability to absorb large quantities of water, and a high cation exchange capacity. The properties of bentonite are derived from the crystal structure of the smectite group, which is an octahedral alumina sheet between two tetrahedral silica sheets. Variations in interstitial water and exchangeable cations in the interlayer space affect the properties of bentonite and thus the commercial uses of the different types of bentonite. By extension, the term bentonite is applied commercially to any clay with similar properties. Fuller’s earth is often a bentonite.


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We provide solutions for bentonite production, Capacity varying from 1 - 1000 t/h,which means max capacity could be over 8,60,000 t/year.Our products have been exported to more than 167 countries and are widely used in global mining and construction industry.We have a lot of bentonite quarrying experience and success stories.