Sawdust pellets are small, cylindrical or spherical compressed forms of biomass made from sawdust, a byproduct of wood processing. These pellets are produced through a process called pelletization.
Here’s how sawdust pellets are typically made:
- Sawdust Collection: Sawdust is collected from wood processing facilities, such as sawmills, woodworking shops, or furniture manufacturing plants. It is often generated as a byproduct of sawing, sanding, or shaping wood.
- Drying: Sawdust typically contains moisture, which needs to be reduced to a certain level for pelletization. The sawdust is dried using methods such as rotary drum dryers, belt dryers, or flash dryers to achieve the desired moisture content.
- Grinding: The dried sawdust is then ground into finer particles using a hammer mill or similar equipment. Grinding helps to reduce the particle size and improve the density and quality of the pellets.
- Pelletization: The ground sawdust is fed into a pellet mill, where it is compressed under high pressure and temperature through a die. The die has small holes through which the material is forced, forming dense pellets as it emerges.
- Cooling and Packaging: The newly formed sawdust pellets are cooled to room temperature to stabilize them. They are then typically packaged in bags or bulk containers for distribution and storage.
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