Roller Press Granulation vs. Drum Granulation: Choosing the Right Process for High-Concentration NPK?
In the production of high-concentration NPK compound fertilizer (total nutrients ≥45%), the choice of granulation process directly affects product quality, production costs, and return on investment. Currently, the two main technical routes—roller granulation (double roller extrusion granulator) and drum granulation (rotary drum granulator)—differ significantly in principle, energy consumption, and finished product characteristics. This article compares and analyzes four core parameters to help manufacturers make a reasonable selection.
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