The organic fertilizer disk granualtor machine is a core piece of equipment in the fertilizer granulation process. Its wear patterns directly affect the operating efficiency, granulation quality, and production costs of the disc granulation production line, requiring a comprehensive analysis considering material characteristics, equipment parameters, and operating conditions.

Wear is mainly concentrated in three key components: the disc liner, scraper, and baffle ring, exhibiting a "localized concentration and gradual acceleration" characteristic. In the initial stage, the surface of the new equipment's liner is smooth, and the friction with fertilizer raw materials (such as organic fertilizer powder and compound fertilizer granules) is mainly slight abrasive wear, with a gentle wear rate. This stage usually lasts 1-2 months and has little impact on the uniformity of granulation particle size. As operating time increases, pits and scratches gradually form on the liner surface. The material undergoes a "grinding-impact" composite action during rotation, and the wear rate enters an accelerated phase. At this time, the gap between the scraper and the liner increases, easily leading to material sticking to the wall and a decrease in the granulation rate.

The degree of wear is closely related to the hardness and moisture content of the material: harder mineral raw materials will exacerbate abrasive wear, while excessive moisture content will cause the material to adhere to the liner surface, resulting in repeated extrusion wear, and simultaneously accelerating the corrosive wear of the baffle ring. In addition, equipment operating parameters also affect the wear rate; an excessively large disc inclination angle and high rotation speed will increase the relative sliding speed between the material and the liner, significantly shortening the service life of wear parts.

When the wear amount exceeds the critical value, the failure rate of the components will increase sharply, not only increasing the frequency of downtime for replacement but also leading to excessive deviations in the particle size of the granulated product. Therefore, it is necessary to develop a periodic maintenance plan based on the wear patterns, regularly check the liner thickness and scraper gap, and select wear-resistant liner materials based on material characteristics to extend the service life of the equipment.