As we all know, the pellet machine is divided into two series - flat die series and ring die series. You should be familiar with the ring die series, because many feed companies at home and abroad use the ring die machine for granulation. The raw materials for feed are concentrates, such as corn, soybean meal, cotton meal, etc., with high adhesion rate, and equipped with a steam conditioner before granulation, which can soften and mature the material in advance, so as to better granulate, and increase the gloss of the particles. However, coarse fibers such as straw and sawdust have a low adhesion rate.
It is difficult to form, and if it is used as a fuel pellet, it requires a lot of density, so it requires a lot of pressure to reach the density of the particles, which invisibly increases the difficulty. Due to the gradual rise of renewable energy in recent years, the ring die pellet mill for fuel pellets promoted on the market is evolved from the ring die machine for feed, so there are still many drawbacks to be improved.