... for sawdust, 3-5mm;The characteristics of biomass burner:1. Use the biomass pellet and agriculture (straw, wheat straw, cornstalk, ... gas, environmental3. Screw feeding material, high temperature increasing oxygen, control the temperature and water automatically.4. Vortex design, multilevel ... heating equipment, aluminum melting equipment and so on. biomass pellet burner for 2000kw steam boiler