Solid waste treatment into the Rotary Kiln is a prerequisite, mainly cement will not adversely affect the quality and production processes. Will usually be divided into three categories of solid waste into the kiln. 1, as the auxiliary fuel is solid waste. Rotary kiln process consumes a lot of fuel, high calorific value of solid waste can be used as part of an auxiliary fuel alternative fuels. Can be used as an auxiliary fuel solid waste, including waste paper, scrap textiles, scrap plastic, rubber, garbage, etc.. 2, solid waste as a secondary raw material. Many solid waste contained in the inorganic component is similar to the cement raw materials, which can be used as secondary raw materials in cement production use. These include solid waste power plant fly ash, bottom ash, slag, ash and residues such as kiln. 3, the use of rotary kiln destruction of hazardous waste. Hazardous waste chemically reactive, toxic, explosive, corrosive properties, usually by incineration, landfill and biochemical techniques for processing. For the higher heating value of organic waste, such as waste paint, medical waste, organic resins, incineration is an effective method of reduction, sound and resource-oriented.