FOERFARANDE FOER FOERBAETTRANDE AV VATTENABSORPTIONSFOERMAOGAN HOS BENTONIT, ISYNNERHET ANVAENT SOM TILLSATSMATERIAL FOER FORMSAND.

摘要

1. A process to accelerate the water adsorption of bentonite as an additive to moulding sands, characterized in that a material of laminated structure with distinctively smooth cleavage and not swelling in water is added to the bentonite before its use as additive material.