SPECJAL bentonite

Specjal Bentonite is a casting bentonite enhanced with sodium cations (i.e. activated) to radically improve performance. It is used in founding as a binder for moulding sands and core sands.

The advantages of using the activated Specjal Bentonite:

  • Improved resistance of moulding sands to compression and tearing;
  • Improved resistance to high temperature (refractory performance);
  • Higher swell factor, i.e. hydration of bentonite;
  • Better flowing of moulding sands.

Specjal Bentonite is intended for processing with automatic moulding lines and moulding machines. It is widely used for casting of iron, steel and non-ferrous metals.

Item Parameter SPECJAL bentonite
1 Compression strength in humid state [MPa], min. 0,075
2 Spill rate [%], max. 5,0
3 Swell factor [cm3/2g], min. 17
4 Carbonate content [%], max. 5,0
5 Water content [%], max. 13
6 Montmorillonite content [%], min. 75
7 Particle size 80% under 0,056mm
bentonit specjal

Packaging method

21+2 kg paper bags, stacked on Euro pallet 1200×800 mm Big Bag, approx. 1000 kg Bulk in truck tanks Other types of packaging to be arranged


Detailed information can be obtained from our technical consultant:

Damian Drogosz
Implementation and Development Specialist

PHONE: +48 41 2767251
MOBILE: +48 606497245

EMAIL: damian.drogosz@zebiec.pl

Sylwia Sieczka
Implementation and Development Specialist

PHONE: +48 41 27 67 321
MOBILE: +48 608 665 346

e-mail: sylwia.sieczka@zebiec.pl