FIELD: foundry.
SUBSTANCE: method comprises steps of charging granular filler into mixer; at first charging one doze of filler and mixing it with binder till uniform distribution of binder on surface of grains of filler; adding second doze of filler and mixing it till uniform distribution of filler in the whole mass of molding sand. Invention provides shortened time period of distributing binder on surface of filler grains.
EFFECT: enhanced strength of molding sand without increased consumption of binder.
1 ex
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