... efficiency and qualified 2012 hot selling Durable rotary drum dryer rotary drum dryer structure:Rotary dryer is formed by rotary body,lifting blade, ... rotary dryer made by Zhengzhou HUADE company is mainly used in buliding materials, metallurgy, chemical plant, cement plant for ... soil, lime stone, sand, quartz stone etc.3. Ore processing industry: Various metal concentrates, slag, tailings etc.4. ...