... can press 2-8mm diameter biomass pellet, animal feed and fertilizer pellets , raw biomass materials can be waste from sawdust, ... , peanut shell, sun flower, paper ect ,animal feed materials can be grain, soybean, maize ect, fertilizer materials can be animal manure ... center of die , increase pellet machine working efficiency . 4.fertilizer pellet press can make biomass pellets as burning fuel , make ...