... drying of limestone slag, coal powder, slag, clay stone. This dryer is formed of rotary body, lifting blade ... materials with humidity or granularity in the industries of mineral dressing, building material, metallurgy and chemical. Rotating dryer ... Hongji Group can also produce the whole set of mineral selection equipment, process design and can accept 50- ... ISO9001:2008 Spin Drier for Drying Sand/Stone