In the pellet production line, YONGLI ring die pellet mill is one of the main key equipment, from the state to the feed powder particles forming, will be completed by four regions: 1. Raw materials fed from forced feeder into conditioner, with the help of water and steam, flow through the chute shaped tube, and the ring mold cover, by centrifugal force and gravity and the rotation of the ring die, the material strongly fit the cover and the inner wall of the ring die. 2. Under the feeding blade action, material continuously feeding into the wedge space between roller and ring die. 3. Because of pressure of work roll surface and inner ring die face clearance, only 0.1 mm to 0.3 mm and the gap is substantially constant, formed a certain pressure. 4. Because the material between die and roller have strong extrusion, the material is compacted into the die hole. The material is continuously fed into the pressing area, and is extruded from the die hole is continuously...