Material sticking to the rollers is a common problem during the operation of a double-roller press granulator. This can lead to uneven granule formation, reduced equipment capacity, and in severe cases, damage to the rollers and blockage of the feed port, affecting production continuity. Roller sticking is often related to material characteristics, equipment parameters, and operating procedures.  Targeted treatment measures should be taken, along with proactive prevention, balancing treatment efficiency and equipment maintenance.

To address roller sticking, the machine should be stopped and cleaned to avoid damaging the roller surface with harsh scraping. A combination of physical and chemical cleaning methods can be used: physically, use a soft brush or wooden scraper to remove adhering material from the roller surface. If the adhesion is strong, warm water can be used to soak the material before cleaning. Metal tools are strictly prohibited. Chemically, for non-corrosive materials, a small amount of specialized release agent can be applied to assist in cleaning. After cleaning, the roller surface must be thoroughly wiped to prevent residual chemicals from affecting subsequent granulation quality.
Identifying the cause of roller sticking is key to solving the problem and requires systematic troubleshooting and adjustment. High material moisture content is a major contributing factor; the moisture content should be controlled at 8%-10%. If the moisture content is too high, it can be adjusted by drying or mixing with dry material. If the material is too sticky, a suitable amount of inert diluent can be added to reduce stickiness, while avoiding the use of hygroscopic raw materials.
Equipment parameters and operating procedures also need to be optimized. High roller temperature can exacerbate roller sticking; a cooling device can be added to control the roller surface temperature within a reasonable range. Adjust the roller speed and pressure to avoid excessive pressure and speed leading to excessive material compression and sticking. In addition, the roller surface of the double-roller press granulator should be regularly polished to maintain a smooth surface. If the roller surface shows wear or scratches, it should be repaired or replaced promptly to prevent material adhesion.
Effective daily prevention can significantly reduce the frequency of roller sticking. Strict control of feed quality is necessary, including screening and removing impurities to prevent impurities from scratching the roller surface. The equipment should be cleaned regularly, keeping the feed port, rollers, and discharge port clean.  The appropriate roller material should be selected based on the material characteristics, using wear-resistant and non-stick materials for sticky materials. By combining scientific treatment with precise prevention, we can both solve the problem of roller sticking and extend the equipment's lifespan, ensuring the stable and efficient operation of the fertilizer production line.