Different types and sizes of cement rotary kiln process and its different parts have different requirements for refractories, must be selected with suitable refractory material, in order to achieve full kiln and its different parts of the lining of the long life and high efficiency. Rotary kiln refractory selection and matching should follow the following principles: 1, firing zone and transition zone on both sides of a stable kiln leather parts should be alkaline brick; production capacity in smaller, open stop with frequent kiln also uses high alumina bricks, mainly phosphate bonded alumina bricks. 2, instability and even skin exposed brick kilns transition zone should be used within the spinel brick; ability of smaller and lower kiln temperature inside the kiln can be its transition alumina bricks, high alumina brick is mainly phosphate-binding. 3, the decomposition zone, should be made of high strength insulating bricks, bricks and insulation bricks. Tile surface temperature is below 1350 ℃ most parts should adopt high alumina bricks. Large kiln kiln door hood and cooler cooler throat and high temperature zone of high temperature parts with anti-spalling high alumina bricks or chemical bonding (special) high alumina brick for the working layer material. In the high-pressure high-temperature area of ​​grate cooler sidewall clinker was boiling parts of the state should adopt silicon carbide composite tiles. 4, part of the kiln feed preheating, including kiln with subsequent decomposition of the rear cylinder, preheater and calciner system, tertiary air duct, and a cooling unit in the temperature zone, the surface temperature is below 1200 ℃ lining of parts used fireclay refractories, including ordinary brick, clay series alkali refractory castable. Please indicate Henan YuFeng Heavy Machinery