Raw coal dryer is a new type of equipment specialized in drying raw coal, which is built on the basis of traditional drum dryer. Dingli raw coal dryer can realize drying moisture 8-15%, enhance the calorific value of 50-75kcal/kg, fully heat exchange and heat conversion to realize the raw coal drying, according to the customer's specific requirements for environmental protection indexes of the dust collector matching selection, reduce the exhaust gas temperature and exhaust dust emission concentration, to ensure that energy saving and emission reduction and green environmental protection purposes.