... .used for drying slag limestone,coal powder,etc 4.durable widely used rotary sand dryer ♦Description of used rotary sand dryer ... used rotary sand dryer:The rotary dryer can dry many kinds of materials which contain moisture, such as coal, coal slurry ... , slag, industrial waste, and clay stone. Rotary dryer are widely used in building materials, metallurgy, and chemical industry. ♦Benefits of ...