Case Study: Deploying the Gofine Double Roller Granulator on an Industrial Production Line

In high-capacity compound fertilizer and chemical processing plants, thermal drying consumes a massive portion of total operational expenditure. Moisture-sensitive powder blends—such as NPK formulations, ammonium sulfate, and potassium chloride—often struggle under conventional wet granulation processes.

To overcome these processing hurdles and lower utility costs, a leading fertilizer producer recently commissioned an automated dry extrusion fertilizer production line driven by the Gofine double roller granulator. By adopting room-temperature physical compaction, this field installation demonstrates how fertilizer manufacturers can achieve continuous high-strength pelletizing without heating or binder additives.

Field Site Application: High-Pressure Dry Compaction in Action

At the customer’s facility, the manufacturing bay required a compact, energy-saving setup to transform fine chemical powder into durable 3–6 mm oblate and spherical granules. The core of the operation features a synchronized Gofine double roller granulator integrated directly between upstream automatic batching hoppers and downstream sizing screens.

• Continuous Material Flow Step-by-Step

1. Dry Raw Powder Input: Prepared raw chemical powders are uniformly fed into the machine's primary intake hopper.

2. High-Pressure Mechanical Compression: The powder enters the Gofine double roller granulator extrusion zone, where dual counter-rotating alloy rollers squeeze the material into dense, solid sheet flakes using mechanical force alone.

3. Internal Crushing and Sizing: The compressed flakes immediately pass into an integrated lower crushing chamber, where rotating blades break them down into granular particles.

4. Finished Product Screening: A screening unit separates the target-sized, high-strength pellets for direct packaging, while any undersized fine particles are automatically routed back to the feed hopper in a continuous recycling loop.

Operational Advantages Captured at the Field Site

Deploying the non-drying compound fertilizer pelletizer delivered immediate efficiency gains across the customer's processing pad:

• Zero Thermal Drying & Massive Energy Savings

By utilizing physical pressure rather than liquid misting or chemical binders, the Gofine double roller granulator bypasses rotary drying and cooling drums entirely. This non-drying process lowered fuel and electricity consumption by over 40% compared to traditional wet drum systems, while preserving heat-sensitive chemical nutrients.

• Uniform Pellet Hardness & Flexible Sizing

Equipped with specialized anti-corrosive alloy roller shells and an eccentric sleeve adjustment mechanism, the operator can tune the roller spacing to adjust pellet density and diameter in real time. The resulting pellets exhibit high crush strength, resisting degradation during bulk logistics and maritime transport.

Automated End-of-Line Bulk Handling Integration

To prevent final product accumulation from stalling the continuous 3–5 TPH granulator output, the field site integrated an end-of-line bulk logistics system.

• Semi-Automatic Ton-Bag Packaging Scales

While smaller retail bags suit local distribution, industrial agricultural buyers rely on high-volume shipping. The Gofine double roller granulator line feeds finished granules directly into a heavy-duty semi-automatic ton-bag packaging machine.

A single operator mounts flexible bulk bags (FIBCs) onto pneumatic hooks. The smart scale performs automated, weight-controlled filling, shutting off material flow instantly once the 1-ton threshold is hit. This keeps the factory floor clear, minimizes dust, and readies product for immediate transport.

Upgrade Your Fertilizer Processing Line

Are you planning to upgrade an existing powder mixing pad or build a new dry extrusion fertilizer production line? Our engineering team manufactures customized Gofine double roller granulator equipment tailored to your target output, raw material formulas, and space limits.