This project offered a unique bulk material handling challenge due to the extremely abrasive characteristics of crushed alumina. KWS offered years of experience and expertise in conveying alumina and other extremely abrasive products. Because of the existing plant layout, Aleris required a 54-foot long screw conveyor to transfer crushed alumina from a screener to another conveyor. Aleris had used screw conveyors in the past with very disappointing results. Their previous solutions were poorly designed and a maintenance nightmare. Internal screw conveyor components such as screws, coupling shafts, hanger bearings and trough liners were only lasting a few weeks and adding tremendous amounts of downtime and additional labor costs.