The half-wet material crusher inputs impact energy. Its dual-stage rotor spins at high speed, with hammers repeatedly striking the material to break down large, fermented clumps into fine powder. This process involves neither added heat nor pressure; instead, it relies on the instantaneous release of kinetic energy. The moment a hammer strikes the material, kinetic energy is converted into the work required to fracture the material, along with a small amount of heat. The advantages of impact energy are high efficiency and broad adaptability, allowing it to handle viscous materials with moisture content ranging from 20% to 55%. Its drawback is uneven energy distribution, making it difficult to avoid having a small number of incompletely pulverized coarse particles mixed in with the fine powder. Consequently, its role in the upstream process is clearly defined: to provide "qualified intermediates" with controllable particle sizes for subsequent granulation, rather than producing the final product directly.

Double-roller press granulation technology inputs static pressure energy. Two high-strength rollers rotating toward each other compress dry powder material into a dense sheet at ambient temperature, reducing the spacing between particles to a range where van der Waals forces, adsorption forces, and crystalline bridge connections can take effect. This type of energy application is characterized by being slow, uniform, and continuous—the pressure supplied by the hydraulic system acts steadily on the material without generating impact or heat. Consequently, it eliminates the need for the drying and cooling systems required by wet granulation, reducing overall energy consumption by 30% to 50% compared to wet processes. However, static pressure granulation imposes extremely strict requirements on the material state: the feed moisture content must be kept below 5%, and particle size fluctuations must be minimal; otherwise, the roller's material intake becomes unstable, leading to a sharp decline in granule strength consistency. It is suitable for "dry and uniform" powders rather than wet materials.

The new "two-in-one" organic fertilizer granulator utilizes shear and frictional energy. It integrates mixing and granulation within a single barrel: high-speed mixing teeth at the inlet shear and break up the material at speeds of 300 to 1,000 rpm; the middle section facilitates agglomeration using centrifugal force and mechanical extrusion; and a built-in polishing assembly at the outlet rounds the granules in real-time after formation. The defining characteristic of shear energy is "simultaneous mixing and forming"—materials undergo breakup, agglomeration, and densification concurrently within the machine. No pre-drying is required, allowing for the direct processing of fermented materials with moisture contents ranging from 25% to 45%. The pelletization rate remains consistently above 90%, with material recycling losses kept under 3%. The trade-off for this energy method is relatively concentrated mechanical wear, necessitating regular inspection and replacement of the mixing teeth and barrel walls.