First, the product characteristics and uses the characteristics of advanced technology, reasonable operating parameters, the operation is simple and feasible. Use can be widely used in various industries for slag, clay, coal, iron, ore and other mixed materials, construction of dry mortar, yellow sand, etc. as well as chemical, foundry and other industry raw material drying. Second, the product advantages 1, Dryer scientific and rational energy efficient. Dryer high thermal efficiency, energy saving effect is remarkable. 2, the machine uses materials and hot air downstream drying process, a wide range. 3, the external surface area of ??the aircraft than monocular rotary dryer to reduce more than 30%, the inner tube and the outer tube has a thermal insulation effect, the outer cylinder surface temperature is low, less heat loss, the energy-efficient, while greatly improving the working environment and working conditions. 4, a variety of lifting plate design, angular lifting plate and lifting plate words combine to make the material more fully with the hot gas exchange, reducing the dryer cylinder body "wind tunnel" generation mechanism. 5, the use of frequency control, adjust the cylinder speed, according to water into the machine, production requirements, with appropriate speed, to ensure that meet the needs of the next process. Automatic temperature control system, make the operation more convenient.