Double roller press granulators use a dry granulation process. The materials are dry and hard, requiring no drying or bonding. The finished product often contains a mixture of powder, irregular fragments, and standard granules. To improve the purity of the finished product and recycle waste, suitable fertilizer screening equipment is needed. Compared to wet granulation, screening equipment for extrusion granulation prioritizes wear resistance and powder separation efficiency, making selection more targeted.

Drum fertilizer screener machines are the mainstream supporting equipment for roller press granulator production lines. They are suitable for dry, hard fertilizer granules, are less prone to clogging, and have high material throughput. The equipment operates stably, has a large processing capacity, and can match the continuous mass production rhythm of the granulator, accurately separating powder, fragments, and standard granules.

For small to medium-sized, refined production scenarios, multi-layer vibration fertilizer screener machines are more suitable. This equipment offers high screening accuracy and clear stratification, capable of simultaneously screening large particles, standard granules, and fine powder, ensuring uniform particle size and quality in the finished product. It boasts advantages such as small footprint and low energy consumption, making it suitable for the refined production needs of high-end customized fertilizers.

In practical selection, it’s crucial to choose wear-resistant screens for hard extruded fertilizers to reduce equipment wear and replacement frequency. Furthermore, equipment specifications should be matched to the production line’s capacity to avoid material accumulation and blockages caused by insufficient screening efficiency.

In summary, drum fertilizer screener machines are preferred for large-scale mass production, while multi-layer vibration screener machines are suitable for refined, high-end production. Properly matching screening equipment can optimize the production process of the double roller press dry granulation technology, reducing consumption, improving quality, and significantly increasing the commercial yield of finished fertilizer products.