... 15-20days 2. Using adjustable motor 3.10%capacily improved 4. ISO9001-2008 certificate Henan Huazhu Machinery Equipment Co., ... used for drying many kinds of materials limestone slag, coal powder , slag, clay stone. And it formed by rotary body ... ring.Features: The dryer has advantages of reasonable structure, high efficiency, low energy consumption and convenient for transportation, and convenient ...