Extending the service life of double roller press granulator revolves around five core aspects: roller protection, material pretreatment, precise operation, regular maintenance, and working condition adaptation.  This involves targeted protection of key components such as the rollers, transmission system, and hydraulic system, while avoiding damage caused by hard impurities in the raw materials and improper operating parameters.  The equipment should be adapted to organic fertilizer/compound fertilizer granulation scenarios. Specific operational points are as follows:

1. Raw Material Pretreatment: Reducing Roller Wear from the Source

Before granulation, materials must be processed through a double-layer vibrating screen and a magnetic separator to remove hard impurities such as stones and metal scraps (hard materials with a particle size > 5mm are strictly prohibited from entering the machine); organic fertilizer raw materials must be fully fermented and crushed to over 80 mesh to prevent dry material slippage and wet material sticking to the rollers, which can cause localized wear on the roller surface.

3. Precise Operation: Avoiding Equipment Damage from Improper Working Conditions

When starting the machine, follow the sequence of "empty machine operation → feeding → pressurization"; when stopping the machine, follow the sequence of "stop feeding → depressurize → empty machine operation for 2-3 minutes to clear material → then stop the machine".

5. Daily Roller Maintenance: Extending the Service Life of Wear Parts

After each shift, promptly clean the residual material on the roller surface and in the roller cavity to prevent material caking and hardening; if the machine is shut down for a long time (more than 7 days), apply anti-rust oil to the roller surface and wrap the roller body with waterproof cloth to prevent corrosion.

6. Working Condition Adaptation Optimization: Reducing Additional Equipment Load

Match the granulator model to the roller press granaultor produciton line capacity to avoid overloading a small machine or underloading a large machine; during high-temperature seasons, ensure proper equipment cooling to prevent the gearbox and hydraulic oil from failing due to high temperatures; during low-temperature seasons, preheat the hydraulic oil to prevent increased viscosity leading to insufficient pressure.