Bentonite lump
Possessing excellent stickiness and fire proof, use as bond and regulator in the molding of ferrous and non-ferrous metals, and in ceramics oil-refining and oil-drilling industries.
Specs.:
SiO2: 68% min
Al2O3: 19% min
Fe2O3: 2.5% max
Packing: in bulk or in gunny bags of about 25 kg net each.