... used in building material, metallurgy, chemical industuy, cement to dry the slag, limestone, coal powder,clay. Color: any color is avaliableUsed for ... rotary dryer: Drier is a kind of machine with a rotating cylinde which is a little ... dryed. Rotary dryer is used to dry slag, clay, limestone, It is mainly used for cement, chemical, metallurgical, ... .8 Dryer /rotary dryer/dry machine/used for cement drying