Roller Granulator
Product Overview
Equipment Components
A – Frame: Supports the entire equipment
B – Feed Inlet: Material entry point
C – Discharge Outlet: Discharges extruded material
D – Drive Cover: Safety protection
E – Gear Reducer: Reduces speed, increases torque
F – Coupling Guard: Safety protection
G – Granulating Unit: Core working component, including the roller assembly
H – Motor: Power source
- Frame: Supports the entire equipment
- Feed Inlet: Material entry point
- Discharge Outlet: Discharges extruded material
- Drive Cover: Safety protection
- Gear Reducer: Reduces speed, increases torque
- Coupling Guard: Safety protection
- Granulating Unit: Core working component, including the roller assembly
- Motor: Power source
Working Principle
The core of the roller granulator is the dry extrusion forming process. The working principle is: the motor drives a pair of counter‑rotating high‑pressure rollers, which force powdered organic material into a narrow nip gap. Under high mechanical pressure of 20–30 MPa, the material is compacted into dense, hard sheets. These sheets are then broken up by a flake crusher and screened through a sieving system to obtain uniform granules.
This process requires no water addition and no drying. The finished pellets have a moisture content of only 2%–10%, and overall energy consumption is reduced by 30%–50% – making it an efficient, energy‑saving, and environmentally friendly granulation method.
Applicable Materials
Material Category | Typical Examples |
Fermented Organic Materials | Fermented livestock manure (pig, chicken, cow, etc.), humic acid, bio‑organic fertilizer, biogas residue |
Organic Wastes | Straw powder, peat, distiller’s grains, sugar filter mud, municipal sludge |
Material Category
Typical Examples
Features and Benefits
No Drying Required
Ambient-temperature extrusion, one‑step forming, finished pellet moisture content only 2%–10%, protecting heat‑sensitive ingredients.
Eco‑Friendly & Zero Emissions
High Pellet Strength
Compact Footprint
Fast Return on Investment
Easy Operation & Maintenance:
Roller Granulator vs. Disc Granulator
Comparison Aspect | Roller Granulator | Disc Granulator |
Granulation Method | Dry pressure forming | Wet agglomeration |
Drying Requirement | No drying or only low‑temperature drying | Requires drying system |
Pellet Shape | Columnar or irregular, high strength | Spherical, well‑rounded, moderate strength |
Raw Material Moisture | 2%–5% (optimal) | 25%–35% |
Energy Consumption | Low (saves 30%–50%) | Moderate |
Equipment Investment | Moderate | Lower |
Applicable Scale | Small to large (parallel configurable) | Small to medium |
Environmental Control | Zero emissions, fully enclosed system | Open system |
Microbial Survival Rate | >90% (cold granulation) | Affected by drying heat |
Granulation Method
Drying Requirement
Requires drying system
2%–5% (optimal)
Resources
When “No Drying Required” Changes the Economics of Organic Fertilizer Production
In organic fertilizer production, drying is the single largest energy
