General Kinematics DUCTA-SCREEN™ Rotary Sand Screen blends and conditions sand, all while removing tramp metal and core butts for a cleaner sand recycle back to your sand system. Sand is broken down, leaves the rotary shell, and is deposited on GK’s vibratory sand take-away conveyor. The removal of sand from the rotary shell allows cooler equipment temperatures, allowing for increased equipment and component life.