What are the operating procedures for a disc granulator?

A disc granulator is a core forming equipment in the production of organic fertilizer and compound fertilizer. Its standardized operation directly affects granule quality, production efficiency, and equipment lifespan. Mastering scientific operating methods can effectively reduce the failure rate and ensure stable and efficient production. Below is its standardized operating procedure, balancing practicality and safety.

Pre-start preparation is the foundation of safe operation. First, check the equipment status, ensuring the disc liner screws and scraper gap are reasonable, the drive belt tension is appropriate, and the electrical system and auxiliary devices are functioning properly. Simultaneously, pre-treat the raw materials, controlling the moisture content within a reasonable range, removing impurities, and cleaning debris around the equipment. Operators should wear appropriate protective equipment, and clear division of labor should be established to avoid misoperation.

Start-up operation should follow the principle of "auxiliary equipment first, then main unit; no-load first, then load." First, start the auxiliary equipment and run it under no-load. After checking for any abnormalities, start the main unit and run it under no-load for 5 minutes to confirm that the speed, current, and temperature are normal. Then, feed slowly, adjusting the water or steam spray volume according to the material's condition, gradually increasing the feed rate to ensure proper material accumulation within the disc and avoid overload.

Real-time monitoring and inspection are required during operation. Check the equipment status every 30 minutes, paying attention to motor and bearing temperatures and any abnormal noises from the transmission system. Observe the pellet formation and make timely fine adjustments to the speed, tilt angle, or feed rate to ensure uniform pellets and a satisfactory pelleting rate. If any abnormality occurs, immediately press the emergency stop button, investigate the potential problem, and then restart.

Shutting down must be done systematically. First, stop feeding. After a small amount of material remains in the disc, turn off the auxiliary devices, then stop the main unit and disconnect the main power supply. After shutdown, promptly clean any remaining material inside and outside the equipment, lubricate bearings and other components, check for wear on vulnerable parts, and keep a record of the operation to prepare for the next startup.

Standardized operation is key to the efficient operation of the disc granulator. Operators must strictly follow the procedures, avoid violations, attend regular training, and master parameter adjustment techniques. This will improve production quality, extend equipment lifespan, and ensure production efficiency.

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