Application & composition: The indirect heat transfer dryer made by our company can be used in building materials, metallurgy, chemical industry, cement plant for drying of limestone slag, coal powder, slag, clay stone. This dryer is formed of rotary body, lifting blade, driving device, supporting device and sealing ring. Advantages: The dryer has advantages of reasonable structure, high efficiency, low energy consumption and convenient transportation. Performance characteristics : This series drier is used for drying materials with humidity or granularity in the industries of mineral dressing, building material, metallurgy and chemical. Rotating dryer can be used for drying many kinds of materials and with convenient and reliable operation; therefore, it has been widely used.