Among various fertilizer granulation techniques, the double roller press granulator stands out with its unique working principle, producing fertilizer pellets with exceptional density. What makes this equipment so magical? Let’s explore this granulation marvel achieved through pressure.
The heart of roller compaction granulation lies in two parallel arranged pressure rollers. When precisely formulated raw materials enter the space between the rollers, an extraordinary compression journey begins. Under tremendous mechanical pressure, powdered materials are forced through the mold holes on the roller surfaces, instantly transforming from loose powder into dense pellets. This dry granulation process requires no liquid binders, yet produces uniquely shaped oval pellets with distinctive concave-convex patterns, resembling naturally formed mineral crystals.
However, the success of roller compaction granulation relies on the exquisite coordination of the entire production line. Chain crusher first pulverize raw materials to ideal fineness, laying the foundation for subsequent compaction; quantitative feeders act as precise “nutritionists,” ensuring accurate proportional input of various components; vertical disc mixer then play the role of “colorists,” using dual-shaft agitation to achieve uniform blending of raw materials. After granulation, the pellets undergo strict “selection” by screening machines, where qualified products proceed to packaging while unformed materials return for reprocessing, achieving zero-waste production.
The unique advantages of this granulation method are truly remarkable. It produces pellets with extremely high bulk density, significantly reducing storage and transportation space; excellent mechanical strength ensures pellets remain intact during handling and application; more importantly, the absence of drying工序 substantially lowers energy consumption costs. These characteristics make roller compaction granulation particularly suitable for processing temperature-sensitive organic materials and various compound fertilizers.
From loose powder to solid pellets, the roller compaction granulator, with its unique pressure granulation method, has opened a new efficient and energy-saving pathway for the modern fertilizer industry. This granulation technology not only enhances the commercial value of fertilizers but also contributes significantly to the development of sustainable agriculture.
