Stepping into a modern fertilizer production workshop, a large cylindrical device rotates smoothly—this is the rotary drum granulator. As a key piece of equipment in fertilizer production, it uses a unique rotary motion to aggregate powdery raw materials into uniform granules, becoming an indispensable part of fertilizer production.

In the NPK fertilizer production line, the rotary drum granulator plays a crucial role in connecting upstream and downstream processes. In the previous process, various raw materials are precisely proportioned and thoroughly mixed; here, the mixed material undergoes granulation to achieve an ideal physical form. This form not only facilitates subsequent packaging, storage, and transportation but also ensures the uniform release of nutrients during fertilizer application.

Unlike NPK blending machines, which simply perform physical mixing, the rotary drum granulator adds an appropriate amount of liquid phase component, forming granules that nucleate, grow, and compact during rotation. This process maintains the flexibility required for formulation in NPK blending fertilizer production lines while giving the fertilizer product better physical properties. The granulated fertilizer particles have higher strength and more uniform particle size, effectively reducing dust pollution during use.

In a complete NPK blending fertilizer production line, the process parameters of the rotary drum granulator need to be precisely adjusted according to the characteristics of the formula. The humidity and temperature of the raw materials, as well as the rotation speed and tilt angle of the equipment, all affect the quality of the final product. Modern rotary drum granulators have seen significant improvements in energy consumption control, automation, and product quality, providing a reliable guarantee for the production of high-quality compound fertilizers.