No Drying Required Double Roller Extrusion Granulator with Adjustable Pellet Diameter 4-10mm and High Granulation Rate ≥85% for Dry Powder Fertilizer

The double roller extrusion granulator adopts a no-drying granulation process, achieving normal-temperature, one-time forming for dry powder materials. It eliminates the need for additional drying equipment, significantly reducing overall production investment and energy consumption. The finished pellets feature a high granulation rate and strong compressive strength.

With a compact structure and stable operation, this machine delivers fast returns and strong economic benefits. It is widely used for granulation in the fertilizer, feed, and chemical industries. It processes dry powder materials with low moisture content of 2%–5% and produces oblate pellets with an adjustable diameter from 4 mm to 10 mm. It is an ideal molding device for small and medium dry powder granulation projects.

• No drying required — normal-temperature granulation with one-step forming, saving drying costs
• High granulation rate of ≥85%, with finished pellets offering high compressive strength of 6–20 N that resist breakage
• Suitable for low-moisture dry powder raw materials (only 2%–5% moisture required)
• Compact layout, low total investment, quick payback, and strong economic benefit
• Adjustable pellet size from 4 mm to 10 mm with an oblate pellet shape
• Stable running, low failure rate, and easy operation and maintenance
• Wide raw material compatibility for fertilizer, chemical, and feed powder materials

This double roller extrusion granulator is widely applied in the fertilizer, animal feed, and chemical industries. It works with organic fertilizer, compound fertilizer, ammonium sulfate, humic acid, bentonite, graphite powder, snow-melting agent, carbon additive, talcum powder, white carbon black, mineral powder, catalyst, pesticide powder, and other dry powder materials. It is well suited to small and medium production lines that require dry granulation without a drying process.

This machine operates on the dry roll compaction extrusion principle. Dry powder raw materials with a moisture content of 2%–5% are fed evenly between a pair of synchronously rotating rollers. Under the squeezing force of the two rollers, the powder materials are compressed and extruded into oblate pellets through the mold grooves on the roller surface.

The entire granulation process runs at normal temperature without adding water or binders, and no drying treatment is needed after forming. Qualified pellets are discharged directly after extrusion, while a small amount of unformed powder can be recycled and fed again for secondary granulation.