THE 2-MINUTE RULE FOR UREA FERTILIZER PRICE IN IRAN

3. Drying and cooling: The wet granules are transferred to a rotary dryer to eliminate the excess humidity. The dryer uses warm air or flue gas as the heat source, and it has a superior drying performance and small Electrical power use. The dried granules are then sent to the rotary cooler to decreased their temperature and stop caking.On the whole