... 2. sold to Malaysia, India, US, Bangladesh, Mexico, etc Bailing rotary drum dryer is widely used in mining industry, building material ... nearly 20 years. Up to now, we've designed various rotary dryers for drying slag, limestone, coal powder, clay, sawdust, ... , throws moisture materials into the rotary cylinder. Then water will be separated from the materials by hot air-flow and changed into vapour ...