Bentonite is a kind of claystone, consisting mostly of montmorillonite and rarely of feld***r,quartz,beidellite,calcite,pyroclastic tephra. Generally, Bentonite present whiteness. Howerer, if there is some impurity substances in Bentonite, the color of Bentonite is different, such as greyish-green,lightcyan,albescent, pink, brown. Bentonite granule is fine and smooth, possessing the characteristic of strong water absorption,high plasticity and better cohensive force. |