Rotary dryer is used for drying sand, coal, sludge, coal slurry, fly ash, gypsum, clay, Kaolin, grain ( corn, wheat) , mineral powder etc. It is widely used in building materials, metallurgy, cement and mining industry. Rotary dryer mainly consists of drum barrel, roll ring, wheel gear, lifting board, reduction gears, and motor etc parts. It is matched with conveyor, dust remover and draught fan etc equipments.