Wet granulation is a crucial step in compost fertilizer production, especially when turning moist organic matter into uniform, dense, and round granules. Compared to dry granulation, wet granulation helps bind compost particles more effectively using moisture and mechanical force. For fertilizer producers looking to improve pellet quality and increase production efficiency, choosing the right wet granulation machine is essential. Below are the top 3 wet granulation machine widely used in compost granule fertilizer production lines.
1. Disc Granulator (Pan Granulator)
The disc granulator is one of the most popular wet granulation equipment for compost fertilizer plants. It features a rotating inclined disc that continuously spins, allowing compost materials to agglomerate and form round pellets under the effect of water spray and centrifugal force.
Ideal for: Small to medium-scale organic fertilizer production (1–6 t/h)
Features: Simple structure, adjustable angle, uniform pellet size (2–5 mm)
Advantages: Low cost, energy-saving, easy to operate and maintain
Disc granulators are suitable for composts with moderate moisture content (30–40%) and are especially effective for animal manure compost like chicken, cow, and sheep dung.
Disc granulator for compost pellet making
2. Rotary Drum Granulator
The rotary drum granulator is a large-capacity wet granulation of compost that uses the rotating motion of a horizontal drum to tumble and mix compost materials with moisture and binder, forming spherical granules.
Ideal for: Medium to large-scale compost fertilizer production (5–30 t/h)
Features: High capacity, continuous granulation, durable structure
Advantages: Suitable for compound fertilizer and organic-inorganic mixtures, supports high-output lines
This granulator works well with pre-fermented compost that is already crushed and mixed with additives. It is often used in commercial compost fertilizer factories seeking high output and automation.
rotary drum granulator design
3. New Type Organic Fertilizer Granulator (Stirring Tooth Granulator)
This advanced wet granulator uses high-speed rotary stirring teeth to mix and granulate compost under moist conditions. It doesn’t rely on water spray but instead uses the internal friction and cohesive force of organic material itself.
Ideal for: High-purity organic compost granulation (2–8 t/h)
Features: No binder needed, good for fibrous or sticky compost
Advantages: Produces dense, uniform pellets with excellent roundness
This machine is perfect for composts made from crop straw, green waste, food waste, and livestock manure.
New type organic fertilizer granulator
Conclusion
Each of these wet granulation machines serves a different production scale and material type. Whether you’re a small compost processor or a large-scale fertilizer manufacturer, investing in the right granulator—disc, drum, or stirring tooth—can significantly improve product quality and efficiency in compost fertilizer production. If you plan to start the project, you can visit https://www.granulatedcompostsolutions.com/product/wet-granulation-machine-for-compost-pellet-making/