wood log is the most common raw material for making wood pellets.

1. Crushing process:

The raw material used to make wood pellets must be broken to a small size,  and pellet machine users typically use a wood chipper to cut the wood into pieces of 2.5 cm (0.98 in) or smaller

2. Fine crushing process:

Using a hammer mill, smaller pieces are crushed and cut into very small particles,  Reduce the size of the raw material to 5 mm (0.20 in). Some users will choose the pre-treated sawdust and can skip this step.

3. Drying process:

Drying the raw material to the proper moisture content is essential for the manufacture of high quality particles.  Before granulation,  it is necessary to ensure that the water content of the raw material is about 10%-15%. For a small batch of particles,  the raw material can be left in the sun for at least 24 hours to dry naturally;  For larger batches, a dryer can be used to dry the raw material to the desired moisture content.

4.Pelleting process:

The most commonly used equipment for granulation is the pellet machine. TONY's new 304 stainless steel vertical ring die  pellet machine is extruded by ring die and press roll, the raw material is squeezed into the ring die hole to form,  and constantly extruded to the outer end. When pelleting,  it is necessary to ensure the uniform feed to prevent the blocking caused by too fast feed.

5. Cooling process:

When the molding particles leave the pellet machine, the particles themselves will be hot and release water vapor,  so they must be cooled and dried, which can make them harder.

6. Packaging process:

Once the particles are cooled, they are transported to a packaging facility, packed and stored in a dry place.

It is important to note that different pellet manufacturers may have different process details and quality control  standards.

If the wood chips raw materials may contain stones or metal and other debris,  if these debris into the pellet machine particle chamber,  they are likely to lead to the pellet machine mold clogging or wear,  so the raw materials into the wood pellet machine before screening iron impurities. If processing pellets with a variety  of raw materials may need to use a drum or blender batch mixing adjustment. Finally,  not all particles can be pressed well, during the pressing process, some particles will be scattered or broken,  usually using the aperture of the same size as the wood particles of the filter shaking or screening to remove the  deformed particles.

The above is the main processing process of wood pellets. If you have any questions, please contact TONY.