In fertilizer production, whether the pressure of a double roller press granulator is set correctly directly affects product quality and production efficiency.
- Observing Particle Appearance
Shape Integrity
Under the right pressure, particles are fully formed. For example, in compound fertilizer production, properly pressed particles appear round or oval. If the pressure is too low, particles may have uneven edges or irregular shapes due to insufficient compression.
If the pressure is too high, particles can become deformed or lose their intended shape from over-compression.
Surface Smoothness
Proper pressure ensures a smooth particle surface. Low pressure often leaves particles rough with visible bumps from un-compacted material.
Excessively high pressure may cause cracks on the surface due to uneven internal stress distribution.
- Monitoring Equipment Performance
Motor Load
At optimal pressure, the double roller press granulator’s motor operates within its standard load range. If pressure is too high, the motor’s current exceeds normal levels, leading to overheating, higher energy use, and reduced motor lifespan.
If pressure is too low, the motor runs under lighter loads, which can cause inefficiency or idle operation.
Vibration and Noise
Proper pressure ensures stable operation with minimal vibration and noise. Excessive pressure increases vibration and noise as components endure extra stress. Conversely, low pressure may cause irregular vibrations or unusual noises from unstable operation.
- Evaluating Product Performance
For products like feed pellets, proper pressure ensures ideal density and hardness. Over-pressed pellets become too hard, affecting digestibility for animals. Under-pressed pellets are fragile, prone to breaking during storage or transport.
By combining these checks—particle appearance, equipment behavior, and final product quality—you can reliably adjust the double roller press granulator’s pressure for efficient, high-quality production.