BENTONITE FRACTIONATED AND DRYED (Bentonite crumb)
The products are manufactured from lump bentonite. Crushed dry bentonite is used for the production of bentonite products for various purposes: clay powders for foundry, for drilling muds, adsorbents, etc. as well as in the production technology of iron ore pellets.
Processing includes stone separation, grinding of bentonite in its raw form to a particle size of not more than 18 mm. If necessary, grinding it in a wet state with additives of soda or other reagents and subsequent drying to a moisture content of 14-20% – the exact humidity level is determined by the Customer’s requirements.
Quality indicators of bentonite crumb.
|Indicator (standard definition)|
0,0 – 18,0
14 – 20
|Methylene blue adsorption, mg eq.|
(MBA-test, VDG P-69)
300 – 400
|Swelling Index, ml. / 2g. (ASTM D5890)|
8 – 28
|Compressive strength in the wet state, kg.s. / cm.2 (VDG P-69)||on request|
|Tensile strength at break in the zone of moisture condensation, kg.s. / cm.2 (VDG P-69)||on request|
|Thermal stability (P-69 VDG)||on request|
|Colloidal,% (VDG P-69)||on request|
|Water absorption, units (VDG P-69)||on request|