The rotary drum dryer is also called as a roller drying equipment or a cylinder dryer, it is also the most common and widest drying equipment in application of the mineral equipment. It is suitable for drying metal and magnetic, heavy, and floating concentrate of non-metallic mine, clay of cement industry, and coal mud of coal mineral industry. The rotary drum dryer is characterized in high production rate and convenient operation. http://www.nadomining.com/