Materials are crushed to a uniform fineness and then intensively mixed in a horizontal mixer for 3-5 minutes to achieve perfect nutrient distribution.

Rotary Drum Granulation: The mixed powder is agglomerated into spherical granules in a rotating drum using a liquid binder (steam/water). The tumbling action forms uniform, round granules.

Double Roller Extrusion Granulation: Dry powder is compressed into dense sheets by two counter-rotating rollers, then crushed and sieved into uniform, irregularly shaped granules. Ideal for heat-sensitive materials.

Moist granules are dried in a rotary dryer fueled by hot air to reduce moisture to <2%. They are then cooled in a rotary cooler to ambient temperature to solidify strength and prevent caking.

Cooled granules are classified by a vibrating screen. On-size product proceeds; oversize is crushed and undersize powder is recycled back to the mixer, maximizing yield (>95%).

Qualified granules are coated in a polishing drum with a thin layer of anti-caking agent to enhance flowability, reduce dust, and improve storage stability.

Finished granules are automatically weighed, filled into bags (woven/valve), sealed, and palletized for storage or shipment.