In the granulation link of fertilizer production lines, disc granulators are widely used due to their high granulation rate and round particles. However, if the equipment fails, it will directly affect the production progress and particle quality. Mastering common faults and solutions can keep the disc granulator in an efficient operating state and escort the production line.

Uneven particle size is the most common problem, mostly due to unstable feeding speed or inappropriate disc inclination. Feeding fast and slow will cause uneven distribution of materials in the disc and large differences in granulation conditions. At this time, a variable frequency feeding device can be installed to stabilize the feed amount by accurately controlling the motor speed, so that the material can be evenly spread on the bottom of the disc. If the disc inclination is too small, the material stays in the disc for a long time and the particles are easy to be too large; if the inclination is too large, the material is thrown out quickly and the particles are small. By adjusting the inclination to the appropriate range and fine-tuning in combination with the material characteristics, uniform particles can be produced.
Disc sticking will significantly reduce the granulation efficiency, mainly due to improper material humidity or too low disc speed. When the humidity is too high, the material is easy to stick together and clump. A pre-drying process can be added before feeding to control the humidity within an appropriate range. If the humidity is too low, it is necessary to spray water appropriately through the disk edge spray device. At the same time, adjust the speed to a reasonable range, use centrifugal force to reduce sticking, and cooperate with the anti-stick coating on the inner wall of the disk to greatly reduce the amount of sticking.
Bearing overheating is an invisible killer that affects the life of the equipment, mostly caused by insufficient lubrication or dust intrusion. Regularly add high-temperature grease, disassemble the bearing seat to clean the internal dust and replace the seals to effectively prevent the bearing from overheating due to wear. If abnormal noise occurs during operation, it is necessary to stop the machine immediately to check whether the transmission gears and pulleys are loose, and tighten them in time to restore to normal.
Choosing equipment from reliable manufacturers and mastering these troubleshooting methods can make the granulation process efficient and stable, and help improve the quality and efficiency of fertilizer production