How to Adjust the Size of Particles Produced by a Disc Granulator?

The size of the particles produced by a disc granualtor can be flexibly controlled by adjusting key parameters. Specific methods are as follows:

1. Adjust the disc angle. The disc angle directly affects the residence time and rolling frequency of the material within the disc: a smaller angle results in a longer residence time, more rolling cycles, and increased particle size due to adhesion; a larger angle results in a shorter residence time, causing particles to be thrown out before sufficient adhesion, leading to smaller finished particles.

2. Control the disc rotation speed. The rotation speed is related to the centrifugal force and friction experienced by the particles: too low a speed results in insufficient rolling force, causing the particles to be loose and small; too high a speed results in excessive centrifugal force, causing the material to be thrown towards the edge of the disc, accelerating adhesion, and resulting in larger particles or even clumping.

3. Adjust the feed rate and moisture content. Excessive feed rate leads to excessive material accumulation in the disc, insufficient rolling space, and increased particle size due to adhesion; insufficient feed rate results in low material collision frequency, hindering particle growth. Feeding should be consistent with the organic fertilizer equipment's capacity (e.g., 1-5 tons per hour) to maintain a stable "bed" of material within the disc.

4. Clean the disc surface and optimize raw materials. If residual material forms scale on the disc surface, it will hinder particle rolling, leading to uneven particle size. Regular cleaning with a scraper is necessary to keep the disc surface smooth.

Through coordinated adjustments of the above parameters, the disc granulator can produce particles of different sizes from 0.5 to 5 mm, meeting the needs of various applications such as organic fertilizer and compound fertilizer. In actual operation, small-batch trial production is recommended to record the correspondence between parameters and particle size before mass production to ensure stability.