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For example, crop straw, peanut shells, rice husks, bamboo chips, palm, caragana, leaves, waste cloth and other combustible materials can be used as raw materials for for making wood pellets. The raw materials of biomass pellets are mainly divided into two categories: wood waste and agricultural waste. In addition, you can also consider using biomass resources such as switch grass and miscanthus as raw materials.

Logs, branches, leaves, bark, dead wood and other wood waste
The calorific value of biomass fuel pellets determines the energy, quality and efficiency of the fuel. Therefore, when we choose wood, we need to consider and analyze the different calorific values of different types of wood.

Forest waste is a potential raw material resource for making wood pellets. Generally speaking, softwood barks such as pine bark, birch bark and oak bark are the preferred raw materials. They have a higher lignin content (15-30%) and a wider distribution range, making it easier to obtain raw materials.

Wood chips, sawdust and other wood waste generated by industries such as wood processing and furniture manufacturing are also important raw materials for making wood pellet. The secondary utilization of wood waste can reduce the processing cost of wood pellets and improve resource utilization efficiency.

Agricultural waste
Agricultural waste is also an important raw material for biomass pellet machines to make wood pellets. We need to know roughly the pelletizing rate of each raw material, as well as the lignin content (usually 15-30%), which is the key to determining whether agricultural waste can be successfully pelletized. The following table will provide you with the commonly used agricultural waste in pellet production machines and their characteristics.

Other raw materials
There are many other potential biomass resources that can be used for biomass pellet production. Exploring and utilizing these resources can diversify raw material production and reduce the cost of wood pellet production. For example, energy crops, food processing waste, cellulose waste, aquatic plants, urban organic waste, livestock and poultry manure, etc. can all be used to make biomass pellets.

Selection of biomass pellet machine
Flat die pellet machines are easy to operate and highly efficient, but have a slightly lower output than ring die pellet machines. Ring die pellet machines have a higher output and are more suitable for larger scale wood pellet production lines. The working principle of biomass pellet machines is to gradually squeeze and press biomass raw materials into dense, high-quality fuel pellets using dies and rollers. The wood pellets produced by ring die pellet machines also have the characteristics of high density and high combustion efficiency.
In short, flat die pellet machines and ring die pellet machines have unique advantages in various production scales and applications. The appropriate pellet machine depends on production needs, material properties and required output.
The biomass pellet machine produced by Henan Hengju Machinery are suitable for a variety of raw materials, whether it is wood waste or agricultural waste, can be easily processed. Contact us for more details on biomass pellet machine.