Drum granulator is an efficient granulation equipment in the fertilizer production process, playing an important role in the fertilizer industry with its unique working mode and excellent performance.

The rotary drum granulator is mainly composed of a rotary drum, a transmission device, a feeding system, a spraying system, and a discharging system. After the equipment is started, the transmission device drives the drum to rotate at a stable speed.

The feeding system evenly feeds the pre treated powdered fertilizer raw materials into the rotating drum. Inside the drum, the material moves upward along the inner wall of the drum under the combined action of centrifugal force, friction force, and gravity, and then falls back after reaching a certain height, forming a continuous cyclic motion.

The spraying system is crucial in this process. It evenly sprays adhesive or an appropriate amount of water in a mist form onto the material inside the drum. The binder binds the small powder fertilizer particles to each other. As the drum continues to rotate, these bonded particles continuously roll and collide, adsorbing the surrounding powder materials and gradually forming larger particles.

The drum is usually equipped with a scraper, which continuously lifts the material and forms a parabolic motion trajectory inside the drum. This not only increases the contact area between the material and the binder, but also increases the collision frequency between the materials, which is beneficial for the formation and growth of particles.

The rotary drum granulator has significant advantages. Firstly, high production efficiency. Due to the continuous rotation of the drum and the circulation of materials, large-scale fertilizer granulation production can be achieved. Secondly, the particle quality is relatively good. The materials are thoroughly mixed and rolled in the drum, resulting in relatively uniform particle size and regular shape of the produced fertilizer.

However, there are also some things to pay attention to when using a rotary drum granulator. For example, during the operation of the equipment, certain noise and vibration will be generated, and corresponding noise reduction and shock absorption measures need to be taken. Moreover, components such as the drum and the plate may experience wear and tear after long-term use, requiring regular inspection and maintenance.

Overall, the rotary drum granulator has become an important choice for many fertilizer production enterprises due to its efficient granulation capacity and good particle quality, effectively promoting the scale and standardization of fertilizer production.