... widely used. Main belt conveyor:plate conveyor, scraper conveyor, screw conveyor,bucket conveyor, bucket elevator, overhead conveyors and so on.(2)Used ... different transgerring requirements ,the transferring system can be of only one belt conveyor or consists of several conveyors , ... low-abrasive materials and bags of materials, such as coal, gravel, sand, cement, fertilizer, and grain. Sent material ...