... sand dryer 2.High dealing capacity 3.Energy saving&low pollution What We Offer:Rotary dryer for coal, ... coal slurry,sand,fly ash,sludge,iron ore,sawdust,wood chips,DDGS etc.About ... the high-end to join, heat carrier from the low-end entry, countercurrent contact with material, also have heat ... for reference,which should be changed accordingly. Low pollution sand drying machine