How to use the ring die granulator correctly to improve its production efficiency?

Ring die granulators are core equipment in producing organic fertilizer, feed, and similar products. Their efficiency directly impacts output and costs. Proper operation and maintenance not only extend the ring die granulator's life but also boost production capacity.

1.Raw Material Prep

Moisture Control: Keep raw material moisture between 12%-18% (can go up to 20%-25% for organic fertilizer). Too high causes die hole clogging; too low reduces pellet formation rate.

Particle Size: Crush material below 3mm. Ensures even feeding and reduces ring die wear.

Mixing Uniformity: Use a mixer to thoroughly blend raw materials with binders (like bentonite or starch). Improves pellet density.

2.Ring Die and Roller Matching

Ring Die Selection: Choose the right die hole diameter (usually 2.5-8mm) and compression ratio (1:5 to 1:8) based on material type.

Roller Gap Adjustment: Keep the gap between rollers and ring die at 0.1-0.3mm. Too large a gap lowers pellet formation; too small speeds up wear.

3.Optimizing Process Settings

Feeding Speed: Keep feeding steady. Avoid sudden speed changes to prevent motor overload or jamming.

Main Shaft Speed: Generally control between 200-400 rpm. Use lower speed for hard materials; slightly higher for soft materials.

4.Troubleshooting

Loose, Crumbly Pellets: Check moisture, compression ratio, or add more binder.

Sudden Drop in Output: Check for clogged die holes or worn rollers.

Abnormal Machine Vibration: Check main shaft bearings or drive components for damage.

By optimizing raw material prep, equipment adjustments, process settings, and maintenance, the ring die granulator's efficiency can be significantly increased while reducing energy use and repair costs.