... of material such as chemical products, foundry sand, abrasive wheel, medical products and other materials mixed coal .After drying ... , such as sawdust, pellets, bricks, grain, straw.Rotary drum dryer adopts three lays low-speed rotary, dispersing raw materials ... been widely used in biomass, fertilizer and feed industry.Rotary Drum dryer is mainly used building materials, metallurgy, chemical and ...