The main factors affecting the quality of the lime burning: limestone quality and particle size. CaO content and crystal structure of limestone is burned out of the premise of good quality lime, and limestone particle size ratio is reasonable (Large / Small = 2/1), to improve the state of the furnace air movement, heating the material to enhance the effect of decomposition. The main factors affecting the quality of the lime burning: fuel and heating mode. Solid fuel than gas, liquid fuel heating effect of sewage treatment with lime quotes, fuel to be used in low S, P content of the fuel. Heating mode is arranged for hot spots in the middle of bank sewage treatment with lime price, forcing pressurized heating, or high-temperature air layer is heated through, the better.