Pellet Mill

A pellet mill, also known as a pellet press, is a type of mill or machine press used to create pellets from powdered material. Pellet mills are unlike grinding mills, in that they combine small materials into a larger, homogeneous mass, rather than break large materials into smaller pieces.Pelleting takes place due to the process of extrusion. The press rolls provided inside the die, force the material to pass through the holes of the die and when the feed comes out of the die, it is in pellet form.A Description of the Pelleting Process. The process of manufacturing fuel pellets involves placing ground biomass under high pressure and forcing it through a round opening called a "die." When exposed to the appropriate conditions, the biomass "fuses" together, forming a solid mass.