How to Choose a Cooling Method for Compound Fertilizer? Comparison of Rotary Drum, Fluidized Bed, and Bulk Cooling
Choosing a cooling method for compound fertilizer essentially involves a trade-off between particle strength tolerance, cooling efficiency, footprint, and ambient humidity. Rotary drum cooling is versatile and has a high tolerance for particle strength, suitable for most compound fertilizers and organic fertilizer granules. Fluidized bed cooling is highly efficient and requires little space, but it has a threshold for particle strength; loose and fragile particles will break in large quantities during boiling. Bulk coolers (plate/powder flow) have a small footprint and indirect heat exchange is unaffected by ambient humidity, but often require additional lifting and buffer designs. The choice depends on your particle strength, site conditions, and local climate.
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