How to avoid blockage of ring die hole of pellet machine

How to avoid blockage of ring die hole of pellet machine
August 17, 2023

How to avoid blockage of ring die hole of pellet machine

Pallet Manufacturers frequently experience the problem of blockage of the ring die holes when compressing wood pellets with a ring die pellet machine. The inability to generate pellets after the mold is clogged reduces manufacturing efficiency in addition to lengthening the time needed to disassemble and clean the mold. In this post, we’ll examine some of the most typical reasons of this issue, as well as some potential solutions to avoid blockage of ring die hole of pellet machine

How can a pellet machine’s ring die hole be kept clear of obstruction?

1. Polish the Mold but not too much

The mold for the pellet mill needs to be polished. The reasons for the new ring die’s obstruction is different from the old one. While being drilled, certain new molds will develop flaws in the mold hole. It’s possible that the hole’s interior surface is smooth. Unfortunately, drilling frequently results in minor scratches as well. Even minor scratches will generate enough resistance during the production of particles to jam the mold head.

Remember that blockage will result if the pellet machine’s rollers cannot exert enough energy to overcome the resistance of the die holes. Employ a polishing substance to assist clean the mold hole’s surface and get rid of rust.

2. Raw material granularity.

Make sure that the raw material’s particle size is less than the die hole’s diameter. To make 6 mm wood pellets, for instance, a ring die with a 5 mm hammer mill screen is used. It’s also important to check for contamination in the raw materials. They will seriously harm the pellet machine itself, in addition to clogging the die holes. This can involve damage to motor or gearbox damage.

You can read more: Ring Die Pellet Machine or Flat Die Pellet Machine?

3. Control Moisture in raw materials.

When manufacturing wood pellets, it is crucial to keep the raw material’s moisture content under control. Less than 15% is the recommended value of moisture for the raw material. As the material enters the pellet machine, it will readily produce particles if the moisture level is too high. The mold hole will get obstructed due to this. Utilizing granular binders can help you, even if you manufacture raw materials with the right particle size and moisture content. Granular binders can facilitate the procedure and lower the risk of pellet machine die clogging.

4. Feed it Slow to Prevent Blockage

It is advised to feed the pellet mill slowly to prevent mold clogging. Block of the mold occurs more if the raw material of the pellet machine is supplied into the mold more quickly than the raw material is processed.

5. Keep it Open, Let it Dry

The heat produced during the pellet production process causes the moisture in the raw material to evaporate. Putting raw materials within the pellet machine’s processing chamber prevents moisture from escaping. The entering raw materials then absorb this steam. This indicates that raw materials with moisture levels above 15% may clog dies. Thus, feed the pelletizer only at a rate that can be processed


Just follow these tips to avoid the blockage of ring die hole of pellet machine and get efficiency and productivity year after year for your Pallet Manufacturing unit. If you are looking out for a new Pallet Manufacturing Machine you can contact Satyajit Machineries a Leading Biomass Pellet Machine Production Plant provider for the best machines.

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