What raw materials can be processed into biomass pellets? ?

There is a wide application of raw materials, such as wood, sawdust, straw, chaff, bamboo shaving, peanut shells, bagasse, alfalfa and other raw materials, etc. All the forestry and agricultural scraps can be made into small wood pellets. But different materials have different request to moisture and size. Generally, moisture of raw material is near 15%. Under this situation, pellets produced will have perfect quality. But materials whose lignin or sugar content is high will need less moisture. For the size of raw materials, it should be no longer than the diameter of die holes. For example, if the diameter of die hole is 6mm, while the size of raw materials is near 8 mm, there will be accumulation or even damage inside the pellet machine.