roller screen suppliers in china for iron ore pellet plant 1. algeria rock phosphate. algeria rock phosphate. mining equipment and parts inc. mining equipment and parts inc. crushing of raw material for cement. crushing of raw material for cement. iron crusher mobile.,roller screen for iron ore pellet,roller screen for iron ore stone processing plant. fakoor meghnatis spadana co. roller screen / roller feeder. the main characteristic of roller screen is its smooth movement and integrity and are mainly used in iron ore processing plants for concentrate scalping before hpgr and sizing pellets after the balling disc.