Double Roller Extrusion Granulator – Active-Retaining Granulation for Sensitive Materials
The Low-Temp Double Roller Extrusion Granulator is specialized dry-type granulation equipment designed for heat-sensitive, high-value powdery raw materials. It converts powder to pellets through high-pressure mechanical extrusion (0.8-22MPa) between two counter-rotating, temperature-controlled rollers, without adding water, chemical binders, or relying on high-temperature drying. The unique roller cooling system maintains granulation temperature below 60℃, effectively preserving active ingredients, nutritional value, and chemical stability of sensitive materials.
Application Scope
Optimized for heat-sensitive, high-purity material granulation, this machine is widely applied in:
- Biological & Organic Fertilizer Industry: Granulation of bio-fertilizers with viable microorganisms, enzyme-added fertilizers, and organic nutrient supplements—retaining microbial activity and nutrient integrity
- Food & Feed Industry: Production of functional food additives, vitamin premixes, and high-protein feed pellets—preserving heat-sensitive nutrients like vitamins and amino acids without degradation
- Fine Chemical Industry: Granulation of catalyst powders, specialty chemicals, and electronic materials—avoiding chemical structure changes caused by high temperature or moisture
Product Highlights
- Low-Temp Granulation & Active Ingredient Retention: Internal circulation cooling system maintains process temperature below 60℃, retaining over 95% of heat-sensitive active ingredients compared to traditional high-temperature granulation
- Binder-Free & High-Purity Output: No chemical binders or water addition ensures 100% raw material purity, avoiding cross-contamination and meeting high-standard industry requirements including GMP and organic certification
- Precision Pressure Control & Uniform Pellets: Servo-controlled pressure regulation system with 0.1MPa precision produces pellets with consistent density (1.3-1.9t/m³) and compressive strength (≥3.5MPa) with particle size deviation within ±0.2mm
- Energy-Saving & Eco-Friendly Design: No drying or pre-heating processes reduce energy consumption by 45% compared to wet granulators, with fully enclosed structure capturing over 99.5% of dust and compact design occupying 30% less space
- Wear-Resistant & Easy-to-Clean Structure: Food-grade/wear-resistant alloy steel rollers (HRC ≥62) with 10,000+ hour service life, detachable roller sleeves, and smooth inner walls facilitate quick cleaning and prevent cross-contamination
Technical Specifications
| Model |
DZJ-I-2.0 |
| Capacity (t/h) |
1.5~2.5 |
| Power (kw) |
18.5kw |
| Pressure Roller Size |
Φ150×300 |
| Feed Size (mm) |
≤0.5mm |
| Granule Diameter (mm) |
Φ2.5~Φ10 |
| Reducer Type/Hardened Gear Series |
ZQH400/ZLY160 |
| Material Moisture |
2%~5% |
With customizable roller patterns (corrugated, honeycomb, customized grooves) and adjustable particle sizes (0.8-12mm), this granulator achieves a forming rate of over 94%, delivering uniform, dense pellets. Suitable for both small-batch customization (0.5-5t/h) and large-scale continuous production (8-35t/h), it serves as core equipment for high-quality granulation in industries requiring strict material purity and activity retention
