High-efficiency rotary dryer: mainly used for the drying of slag, clay, coal powder, leaching slag and other materials in the building materials industry or metallurgical industry. The high-efficiency dryer adopts a new type of lifting plate device, which has many functions such as guiding, equalizing flow, and lifting material. It can make the material evenly distributed in the radial section of the dryer, and the material curtain becomes thin, uniform and full, completely contacting the hot air flow, so as to achieve the purpose of making full use of thermal energy. The high-efficiency dryer selects reasonable operating parameters, reduces coal consumption and electricity consumption by more than 10-15% compared with ordinary dryers, and increases the output per hour by more than 10-15%. It has been widely used in building materials, metallurgy, chemical industry and other fields. Applications.