A double roller press granulator is a mechanical compaction machine used to convert prepared powder materials into granules. Unlike wet granulation equipment, it relies primarily on pressure rather than liquid addition to form compacted material.
The machine is commonly considered for compound fertilizer and other powder-processing applications where a dry granulation route is suitable.
The actual granulation performance depends on feed particle size, moisture content, material composition, roller pressure and roller surface configuration.
The double roller press granulator operates through mechanical compression. Two counter-rotating rollers receive prepared powder material from the feeding system and apply pressure to form compacted sheets or shaped particles.
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Four Main Operating Stages
Prepared powder enters the feeding system and is distributed between the rollers.
Counter-rotating rollers apply mechanical pressure to compact the material.
Compacted sheets or particles are broken into smaller pieces.
Qualified granules are separated from oversized and undersized particles.
Screening and recycling arrangements should be designed according to the target particle size distribution and production requirements.
Double roller press granulation can be considered for selected fertilizer powders and mineral materials. However, different materials have different compaction characteristics.
Evaluate particle size, moisture content and compressibility before determining the roller configuration.
Feed uniformity and compaction behavior should be checked during material testing.
Formulation consistency and particle characteristics influence the pressing process.
Particle characteristics and material compatibility should be evaluated.
Note: Not every powder material has the same compaction behavior. Before selecting a roller press granulator, evaluate the material for: moisture content, particle size distribution, bulk density, flowability, and required finished granule strength. For materials with uncertain compaction behavior, laboratory or pilot testing is recommended prior to finalizing production equipment selection.
The double roller press granulator consists of several key components, each performing a specific function in the material feeding, compression, and discharge process.
The feed port guides raw materials into the machine and ensures a continuous supply to the roller compression area.
The driving device provides the mechanical power required to operate the rollers, ensuring stable rotation during the granulation process.
The two rollers rotate in opposite directions and apply mechanical pressure to the materials, compressing them into compact flakes or formed particles.
The discharge port releases the compressed materials from the machine for subsequent crushing, screening, or further processing.
The roller assembly is a key working component of the machine. Its surface structure and material properties influence compression performance, particle formation, and service life.
Selecting a double roller press granulator requires more than matching the machine's rated capacity with the target production output. The characteristics of the material and the complete processing system must also be considered.
Determine the required hourly output, daily operating time and annual production target.
Evaluate material composition, particle size, moisture and compressibility.
Confirm the required particle size, shape, strength and screening range.
Consider available floor space, power supply, material handling and equipment layout.
A complete roller press granulation line combines raw material preparation, batching, mixing, compaction, crushing, screening and finished product handling.
An automatic batching system accurately measures and controls the proportions of different raw materials before they enter the mixing process.
View Batching Equipment →An industrial fertilizer crusher reduces oversized raw material particles into smaller sizes to prepare suitable feed material for subsequent processing.
View Fertilizer Crusher →An industrial fertilizer mixer blends different powder ingredients to achieve a more uniform material mixture before granulation.
View Fertilizer Mixer →An industrial fertilizer vibrating screener separates finished granules according to particle size, removing oversized and undersized materials from qualified products.
View Screening Equipment →A fertilizer production line belt conveyor transfers raw materials, semi-finished products and finished granules between different processing stages.
View Conveyor →An automatic fertilizer packaging machine weighs and packs qualified finished granules into bags according to the required packaging weight.
View Packaging Machine →The final production line layout depends on the raw material, required capacity, plant space and process configuration. Not every project requires all equipment listed above.
Double Roller Granulation Equipment Delivery
Huaqiang double roller granulation equipment prepared for shipment to Malaysia
View the actual loading process, equipment preparation and project delivery information.
View Project Details
Production site of a double roller extrusion granulator in Malaysia
For additional project information, customers can request equipment configuration details based on their own production requirements.
A double roller press granulator is used to compress prepared powder materials into compacted sheets or shaped particles. It is commonly applied in compound fertilizer and other suitable dry powder granulation processes.
The machine uses two counter-rotating rollers to apply mechanical pressure to the feeding material. The compacted output is then crushed and screened to obtain the required particle size.
Dry roller press granulation generally relies on mechanical compression rather than liquid addition. However, the need for auxiliary materials depends on the properties and formulation of the raw materials.
Suitable materials may include compound fertilizer powders, ammonium sulfate, potassium chloride and certain mineral powders. Material testing is recommended before confirming the equipment configuration.
The published DZJ-I model data used in this page lists capacities ranging from 1 to 4 tons per hour. Actual output depends on material properties, operating conditions and the selected configuration. Please confirm the latest model specifications with Huaqiang.
Important factors include feed particle size, moisture content, material compressibility, roller pressure, roller surface design and screening conditions.
A typical system may include a batching system, crusher, mixer, conveying equipment, roller press granulator, screening machine and packaging equipment. The final configuration depends on the production process.
Consider your raw material composition, required capacity, target granule size, available installation space and production requirements. Huaqiang can evaluate these factors to recommend a suitable model.
| Model | DZJ-I 1.0 | DZJ-I 2.0 | DZJ-I 3.0 | DZJ-I 3.0 |
| Capacity (t/h) | 1-1.5 | 1.5-2.5 | 2-3 | 3-4 |
| Power (Kw) | 11 | 18.5 | 22 | 45 |
| Roller Dimension(mm) | ø150x220 | ø150x300 | ø186x300 | ø300x300 |
| Feed Material Size(mm) | <=0.5 | <=0.5 | <=0.5 | <=0.5 |
| Output Granules Size(mm) | ø2.5-ø10 | ø2.5-ø10 | ø2.5-ø10 | ø2.5-ø10 |
| Gearbox Model | ZLY-160 | ZLY-160 | ZLY-180 | ZLY-224 |
| Rotation Speed (r/min) | 60 | 60 | 60 | 60 |
