
In addition to the need of a high attrition and wear resistance, foundry sands are expected to maintain their mineralogical composition after the continuous use (cycles) into the molding process. ... IMPROVING THE YIELD DURING THE SAND RECLAMATION PROCESS 60 50 40 30 20 10 0 %R etained 20 30 40 50 70 100 140 200 270 fines