In the fertilizer production sector, which strives for high efficiency and environmental protection, the double roller press granulator has become a favorite among many manufacturers due to its unique advantages. It eliminates the need for a drying step. Instead, a pair of counter-rotating rollers compress pre-treated powdered raw materials into compact flakes. After crushing and screening, granules are quickly produced. The entire process is energy-efficient and pollution-free. It is ideally suited for temperature-sensitive materials such as organic fertilizers and biofertilizers, avoiding the nutrient damage caused by high-temperature drying.

However, the efficient operation of this “energy-saving pioneer” requires the close cooperation of other fertilizer equipment. In the raw material processing stage, the fertilizer crusher first grinds raw materials such as straw and livestock manure into a fine powder, laying the foundation for subsequent extrusion and granulation. The fertilizer mixer acts as a “nutrition mixer,” precisely blending nitrogen, phosphorus, potassium, and trace elements to ensure a balanced nutrient content in each granule. After granulation, the screening machine immediately “goes to work” to select products with acceptable particle sizes and send unqualified scraps back for reprocessing, greatly improving raw material utilization. For larger production scales, a quantitative packaging machine can be added to automatically weigh and seal the finished product, further improving production efficiency.

With the increasing demand for green fertilizers in agriculture, roller extrusion granulators are undergoing continuous upgrades. These include more wear-resistant rollers, a stable pellet formation rate exceeding 92%, and flexible adjustment of pellet size. Working in tandem with supporting equipment, these machines enable energy-efficient and efficient fertilizer production while maximizing nutrient retention.