PT Journal AU Alp Kagan Gurdil, G Demirel, B TI Effect of Particle Size on Surface Smoothness of Bio-Briquettes Produced from Agricultural Residues SO Manufacturing Technology Journal PY 2018 BP 742 EP 747 VL 18 IS 5 DI 10.21062/ujep/170.2018/a/1213-2489/MT/18/5/742 DE Briquette; Image; Residue; Smoothness; Tumbler index AB This study analyzed the surface smoothness of some fuel briquettes produced from hazelnut, corn and sunflower residues. The residues were briquetted with different particle sizes (PS: 2-5 mm and 7-10 mm) under 80 MPa and 160 MPa. The surface smoothness of them were analyzed by image analyze from their high quality photos. In conclusion, it's seen obviously that the smaller particle sized briquettes had smoother surface than the ones produced with bigger PS. Furthermore, they had better results of compaction, toughness and physical properties. ER