... service life, which have been widely used of the drying industry.3.The sphere of application First ... the material scope of application, It is widely used in minerals, building materials, chemical products, fertilizer, ... residue, corn residue, soybean residue, such as drying.Third ,from drum-type drier of the bodies ... and other forms of heating.Fourth, from the drying temperature ,it is between 60 °C and ...