More than 50% of heat energy is taken away by waste gas in sinter production,thus improving the recovery rate of waste heat is one of the key measures to save energy and reduce consumption in sintering. The system composition and technical principle of sintering waste heat power generation and SHRT are introduced in detail,and the energy utilization efficiency and fixed investment of these two schemes under different process configurations are compared and analyzed. The results show that when the energy consumption of fans is considered together,although the energy conversion rate of SHRT system is the highest,the overall energy consumption is not the lowest. For the scale of the sintering machine equipped with two main exhaust fans,the comprehensive energy consumption is from low to high:waste heat power generation + variable frequency speed control fan system < waste heat power generation + constant speed fan system