Drum granulator is a molding machine that can manufacture materials into specific shapes. The drum granulator is one of the key equipment in the compound fertilizer industry. It is suitable for cold and hot granulation and large-scale production of high, medium and low concentration compound fertilizers. The main working method is wet granulation of agglomerates. Through a certain amount of water or steam, the basic fertilizer is fully chemically reacted in the cylinder after the humidity is adjusted. Under a certain liquid phase condition, the rotation of the cylinder can make the material particles Produce squeezing force to reunite into balls.

The drum type fertilizer granulator machine is filled with steam, gas ammonia or phosphoric acid or nitrogen solution, phosphorous ammonia slurry, heavy calcium slurry, and the compound fertilizer granulation process of chemical reaction and heating is completed in the drum; or supplement cold granulation process of compound fertilizer with small amount of water. The material to be granulated is passed through the rotating movement of the cylinder, and the cylinder is rotated when there is no material, and it is agglomerated into balls under a certain humidity and temperature to complete the ball making process.

In the granulator machine for fertilizer drum granulation, the powdery materials are mainly cladding, so the material circulation volume needs to be larger, so that the materials can be clumped into large particles in the process of cladding. It should be smaller, so that the fertilizer that makes the pellets will absorb less water. When using this bonding method to granulate, the water content of the material is small, so it is necessary to add more water injection volume, because the materials are bonded to each other, the gap between the powder particles needs to be filled with water. Because the understanding of the granulation process has been deepened, some suitable monitoring instruments have been developed, so it is possible to simulate and computer automation control the granulation process.