Bentonites:
Bentonite clays are formed through extensive weathering of volcanic glass or ash. These clays are mined by both open pit and underground mining methods. As mentioned due to good plasticity and strength this mineral is used in whiteware manufacturing. But to a minimal extent as excessive addition can cause cracks in the whiteware body

Bentonites:
Clays that contain 75% of montmorillonite as the primary clay mineral are called as Bentonite. They swell to a great extent in water due to the interlayer water adsorption tendencies. Following are few of the highlighted properties of this mineral.
1. Fine size of this mineral makes it very plastic
2. The mineral has very high base-exchange […]

Bentonite is a very peculiar type of clay which is the disintegration product of glassy particles of volcanic ash. Chemically, bentonites contain more silica, lime and magnesia than Ball clay. But the alumina content is very low while iron content is very high than that of ball clays and china clays. The colour of bentonite […]