Disc and new type organic fertilizer granulators: Two granulation solutions for bio-organic fertilizer production lines

The core challenge in bio-organic fertilizer production line lies in achieving both aesthetically pleasing granules and maintaining low-temperature microbial protection throughout the process. Disc granulators and new type organic fertilizer granulators represent two different technological approaches. Disc Granulator: Classic and Gentle Approach Disc granulators use the low-speed rotation of an inclined disc to roll the powder into granules with the help of moisture. The entire process generates no mechanical heat, maintaining the material temperature at around room temperature to 45°C, which is extremely beneficial to functional bacteria, achieving a survival rate of over 80%. The finished granules are round and uniform with a high-quality appearance. Its advantages include simple structure and low investment threshold, making it suitable for small to medium-sized or start-up projects. However, single-machine output is limited, and it has strict requirements on raw material fineness and moisture content. New Type Organic Fertilizer Granulator: High-Efficiency and Powerful Approach New type organic fertilizer granulators utilize a high-speed rotating rotor to drive agitator teeth, generating strong stirring, shearing, and throwing effects on the material, causing the powder to rapidly agglomerate into granules within the cylinder. It also uses wet granulation, and by adjusting the rotation speed and controlling the spray volume, the material temperature can be kept below 50℃, while also maintaining the activity of the microorganisms. Its core advantages lie in its high pelleting rate (up to 90% or more), large processing capacity, stronger adaptability to fibrous materials, and higher particle density and strength. However, the equipment structure is more complex, and energy consumption and investment costs are correspondingly higher. Selection Recommendations For those with limited budgets, low production volumes, and a focus on stability, the disc granulator is a mature and reliable choice. If high production efficiency and particle strength are desired, and the raw material contains a certain amount of fiber, the new organic fertilizer granulator is a better option. Both are low-temperature granulation equipment; the key is to accurately match the production scale with the material characteristics.