Moderate moisture content for biomass raw materials
The biomass pellet mill is strict with the water content of the raw material. The moisture content of any biomass raw material must be kept in a range. If the raw materials are too dry, the biomass pellets are not easy to take shape. If the moisture content of raw materials is too high, the biomass pellets are easy to loose.
Biomass raw materials with adhesive force
The biomass raw material itself must have adhesive force. Otherwise, the pellet fuels made by biomass pellet machine are unformed or easily broken. Therefore, if you see that biomass raw materials that has no adhesiveness in itself can be pressed into pellets or blocks, the raw materials are likely to be fermented or something like an adhesive is added to the raw materials.
Biomass raw materials without adhesive
Pure sawdust can be processed into wood pellets, other adhesives are not needed. Because the wood chip is a kind of coarse fiber material, it has a certain adhesion. After the compression and pressing of the biomass pellet mill, wood pellets can be formed naturally, and they are very hard and smooth. The pressure of the biomass pellet mill is very large.