Drum granulation is the most common granulation method in fertilizer industry. It can produce high, medium and low content fertilizers with steam or water.Water and liquid raw materials and powder materials in the cylinder, forward and backward way of reciprocating rolling granulation, commonly used raw materials are: nitrogen, phosphorus, potassium, clay, and other powder materials. It can match urea melt, urea formaldehyde and ammonia acid process to reduce production cost and increase output.

The process flow：