Due to its outstanding advantages, double roller press granulators have become the preferred equipment for many companies in organic fertilizer production lines, contributing to efficient and comprehensive organic fertilizer production.

They are suitable for processing high-moisture raw materials, significantly simplifying the production process. Organic fertilizer raw materials are mostly livestock and poultry manure and fermented straw, with moisture contents often reaching 25%-40% after composting. Traditional granulators require drying beforehand, while double roller press granulators utilize a "dry granulation" process. The double roller press granulator forms wet raw materials using a single press, eliminating the drying step. This not only reduces equipment purchase and operating costs but also shortens production cycles, making it particularly suitable for small and medium-sized enterprises to quickly start production.
Another key advantage is its high raw material compatibility. Organic fertilizer raw materials are complex, containing fiber and impurities, placing high demands on the equipment's durability. The press rollers of this equipment are constructed from wear-resistant alloy steel with customizable surface textures. They can process fermented straw and livestock and poultry manure, and can also be mixed with inorganic nutrients to produce compound fertilizers. It also accommodates a wide moisture content range (20%-45%), eliminating the need for strict particle size screening, reducing raw material pretreatment and achieving efficient waste conversion.
It offers significant energy-saving and cost-reduction advantages. Operation requires only the driving rollers, eliminating the need for high-temperature heating or large amounts of steam. Its energy consumption per unit of output is only 60%-70% of that of a ring die pelletizer, saving 15-30 yuan in electricity costs per ton of organic fertilizer. Furthermore, the equipment boasts a simple structure, a long replacement cycle for wearing parts (3,000-5,000 hours), and maintenance without the need for disassembly of complex components. This reduces labor and spare parts costs, resulting in high long-term cost-effectiveness.It also meets environmental requirements. The pelletizing process takes place in a closed chamber, eliminating dust emissions. It also eliminates the need for chemical binders, preventing residual hazards. It also produces no wastewater or exhaust gas, and unqualified pellets can be re-pelletized, achieving zero raw material waste. In addition, the finished particles have excellent properties, with an adjustable diameter of 3-8 mm and a hardness of 15-30N. They are not easy to break during transportation, can slowly disintegrate and release nutrients in the soil, and are also convenient for mechanized fertilization, thereby increasing the application value of organic fertilizers and providing strong support for the development of organic agriculture.