Currently, the effective realization of the Rotary Kiln gas emissions, reduce harmful gas emissions to the greatest extent.Through the optimization of process management want to achieve results.In this article, continue to talk technical issues related emissions from gas emissions. The development of China's lime Rotary kiln is now forging ahead towards this goal, the use of selective grading process gas burner to achieve gas detoxification program run is worth promoting.Rotary kiln is relatively concentrated, denitration technology is basically impossible in a Rotary kiln, the best way is through process management optimization, the use of coal and stable wind systems, the reasonable control of air, reducing large fluctuations in the system, by strengthening the Rotary kiln body stability, to achieve effective gas emissions, so to get a large-scale lime Rotary kiln in the cement industry, the role of emissions of hazardous substances to obtain the greatest degree.