Preheater outlet flue gas heat recovery and utilization for energy saving has a very important role, for vertical preheater exit gas heat recycling, it can not only improve fuel combustion efficiency heat exchanger. Preheater kiln improves the heat exchange line can also reduce energy consumption. An upper portion of the rotary kiln preheater feeding system, which mainly comprises an upper hopper, cutting pipe, cutting methods and structures can be guaranteed to the body of the feed preheater secure seal when the environment by reducing the entry of cold air . Preheater body is: is preheated to 900 degrees Celsius, the material of the most important part, by the preheating chamber, suspension devices and other components refractory lining. Most structural metal building materials, materials depending on the position of the Ministry of the need to use heat-resistant steel, guaranteed at 1000 - 1100 degrees Celsius to work properly. Pusher device comprises a pusher, frames and connecting rods and other parts, Tuitou using heat-resistant steel casting or welded together, can withstand high temperatures, with electronic control and hydraulic systems, hydraulic pusher each program can be automatically controlled by sequentially push material. Preheater advantages are: easy to start, easy to operate, can reduce engine wear, also can protect the environment. Please indicate Henan YuFeng Heavy Machinery (http://www.yufchina.com)