When using organic fertilizer granualtors in winter, it is necessary to balance the stability of the organic fertilizer produciton line and the granulation effect, paying particular attention to the impact of low temperatures on materials and equipment. Specific precautions are as follows:

1. Material Pretreatment and Temperature Control: In winter, raw materials are prone to clumping due to low temperatures (such as livestock manure, straw powder, etc.). The materials need to be crushed and heated to 15-25℃ beforehand (through hot air pretreatment or indoor storage) to prevent low-temperature materials from sticking to the granulator wall, causing jamming or uneven granulation.

2. Equipment Preheating and Maintenance: Before starting, run the machine idle for 3-5 minutes to fully lubricate the motor and transmission components (gears, bearings) (the viscosity of lubricating oil increases in winter; low-temperature special lubricating oil can be used). This prevents damage to components due to excessive friction during cold starts. An insulation sleeve can be installed on the granulator cylinder to reduce heat loss and maintain a stable internal temperature.

3. Timely Cleaning and Freezing Prevention: After shutdown, all residual material inside the drum must be cleaned to prevent freezing and clumping due to low nighttime temperatures, which could cause equipment jamming upon startup the next day. After cleaning, a small amount of vegetable oil can be applied to the drum wall to prevent residual moisture from freezing and sticking together.

4.  Fine-tuning Granulation Parameters: Appropriately reduce the drum rotation speed (5%~10% slower than in summer) to extend the material's residence time inside the drum, allowing for full granulation. If using steam granulation, the steam temperature needs to be increased (5~10℃ higher than room temperature) to ensure uniform heating of the material.

Paying attention to these details can reduce the wear and tear on the granulator caused by low winter temperatures, while ensuring the granulation rate and strength of organic fertilizer granules, avoiding impacts on production efficiency due to environmental changes.