Abstract:In Lianyuan Iron and Steel Co., Ltd the waste heat power plant of 280 sintering circular cooler .has been reformed for efficient waste heat utilization, and the waste heat recovery patent equipment with the stepped self sealing has been installed. After the reform th flow field of e flue gas is improved in the waste heat recovery hood, the efficiency of waste heat recovery is improved, and the power generation of waste heat power station has been increased, so the project has achieved remarkable results.