make wood pellets from sawdust
Sawdust is a kind of by-product from cutting, grinding, drilling, sanding or pulverizing wood with a saw or other tools. Traditionally it is used for making particleboard to make furniture or wood pulp to produce paper; also can be served as mulch, alternative to clay cat litter.The most significant role of sawdust is played as fuel by processed into pellets.
It is an emerging and promising career to make wood pellets from sawdust. Nowadays, hundreds of countries all over the world have built their factories of making wood pellets from sawdust.
Usages of sawdust pellets
- As a matter of fact, sawdust pellet made from waste wood is a good kind of fuel to replace traditional fossil fuels like coal, gas, petrol, etc. It can be used for burning in a stove to cook at home;
- Heat the house, school, hotel, or greenhouse, farm;
- Industrial scale sawdust pellets production can be used in thermal power plants to replace coal.
- Used as cat litter to replace clay;
- Also can be used as horse bedding, or beddings for cow, chicken, dogs, and other animals.
- Other usages waiting to be discovered.
How to make wood pellets from sawdust?
Knowing the usages of sawdust pellets will follow the question of how to make wood pellets from sawdust. The process is not that complicated. Here are the details of wood pellet line:- Get the raw material ready. Generally sawdust is small enough for pellet making. So the first step is to add water to the sawdust till its moisture content is between 8-15%, which is the best moisture content for pelletizing. But if the raw material is wood chips, they should be pulverized first.
- Put the sawdust into the pellet machine gradually. Large scale pellet production need a screw feeder to make sure stable feeding of raw material.
- After pelletized, the sawdust pellets are of high temperature that is not suitable for direct packing. So they should be cooled by pellet cooler.
- Then, pellets go through a vibrating sieve, where good pellets will be left, while broken ones or powder will be collected for reproduction.
- After all the above procedures, pellets can be packed with a pellet packing machine.