LUMP BENTONITE

The lump bentonite of the Askansky field is a bentonite clay extracted from a quarry, without any technological processing, with career moisture and fractional composition after mining by an excavator.
Lump bentonite is designed for use in foundries, where bentonite is introduced into the molding mixture in suspension. It is also used as a raw material for the production of powder and fractional bentonite products for various purposes.

Quality indicators of bentonite of the lump Askan deposit
№
 Indicator (standard definition) Value
1
 Fraction, mm
0,0 – 300,0
2
Humidity,% (ГОСТ 28177 – 89 )
28 – 33
3
Colloidal,% (ГОСТ 28177 – 89)
25 – 85
4
Water absorption unit (ГОСТ 28177 – 89)
2,8 – 8,0
5
Methylene blue adsorption, mg eq. (MBA-test , VDG P-69)
300  –  400
6
Swelling Index, ml. / 2g. (ASTM D5890)
8 – 28
7
Compressive strength in the wet state, kg.s./cm.2 (ГОСТ 28177 – 89 или  VDG P-69)
 on request
8
Tensile strength at break in the zone of moisture condensation, kg.s./cm.2 (ГОСТ 28177 – 89  или  VDG P-69)
 on request
9
Thermal stability (ГОСТ 28177 – 89)
 on request
Lump bentonite of the Askan field can be produced according to the requirements:
  1. Georgian Enterprise Standard СТП ГР 22983003-001-2017;
  2. Interstate standard ГОСТ 28177-89  «Bentonite molding clay. General technical conditions»;
  3. Customer Specifications