Foundry: Bentonite is used as a bonding material in the preparation of molding sand for the production of iron, steel and non-ferrous casting. The unique properties of bentonite yield green sand moulds with good flowability, compactability and thermal stability for the production of high quality castings.
Moulding sand binders
GRADE HX12-30
GREEN STRENGTH(Kpa2) ≥110
HOT-GREEN STRENGTH(Kpa2) ≥3.0
EXPANDING(ml/3g) ≥80
ABSORBED BLUE(g/100g) ≥34
GRANULAR(-200mesh%) ≥90
MOISTURE(%) ≤12