This “waste-to-fertilizer” resource utilization approach not only meets the needs of green development but also provides high-quality organic fertilizer for agriculture. In this process, the rotary drum granulator, with its adaptability to diverse organic waste types and efficient granulation capabilities, serves as a crucial bridge between “waste” and “qualified organic fertilizer.”
The core value of the rotary drum granulator lies primarily in its inclusive treatment of diverse organic waste types. For high-fiber waste such as straw, the rotary drum granulator uses the slow tumbling of its tilted drum, combined with the action of its lifting plates, to thoroughly mix the pulverized straw with a binder, evenly dispersing the fibers and gradually entrapping them into granules. This achieves a granulation rate exceeding 80%.
For high-moisture waste (30%-40%) such as poultry and livestock manure, the equipment uses a built-in ventilation device to regulate the humidity within the drum, achieving simultaneous “granulation and initial dehydration.” This eliminates the need for additional dehydration equipment, reducing processing steps and energy consumption. Even when processing food waste with complex composition, the rotary drum granulator’s flexible mixing design prevents impurities from clogging and ensures uniform granule shape.
Rotary drum granulators also enhance the commercial value of organic waste fertilizer. Ungranulated organic waste has a dispersed fertilizer effect, easily clumps, and is expensive to transport and store. However, the granulated organic fertilizer produced by a rotary drum granulator not only maintains a moisture content below 15%, facilitating long-term storage, but also allows for standardized granules to be created by adjusting the die aperture, meeting market demand for organic fertilizer that is easy to apply and has stable fertilizer effect.