NPK compound fertilizer has two main routes: rotary-drum wet granulation and double-roller dry granulation. This article explains how formula, capacity, energy and target granule size decide the route, and how screening recycle reduces rework.
Event background
The wet route suits larger capacities and classic NPK formulas but needs drying and cooling; the dry route uses less energy and suits moisture-sensitive raw materials. Choosing the wrong route raises energy cost and makes the finished granule less stable.
Key facts
- Typical plant capacity is 1–30 t/h, selected by formula, energy availability and budget.
- Automatic multi-hopper batching with PLC recipe control meters N, P, K and fillers.
- Twin-shaft or horizontal mixers homogenize the formula before granulation.
- Rotary-drum granulation supports steam or ammoniation options; double-roller compaction is the dry, low-energy alternative.
- Rotary dryers and coolers stabilize granule moisture and temperature after wet granulation.
- Rotary screeners classify product and close the recycle loop so off-size granules return to the circuit.
- Anti-caking coating and automatic bagging with palletizing complete the line.
What this means for customers
A buyer can judge the route from its own formula and energy cost before quotation, reducing back-and-forth. The recycle loop cuts rework and material loss, which matters at multi-tonne hourly rates.
How we support this
YUSHUNXIN delivers both routes and integrates batching, granulation, drying/cooling, screening, coating and packing as one complete line.
Next steps
Provide formula, target capacity, energy source and target granule size. We will recommend the wet or dry route and identify which sections the project needs.