Aiming at the problems of poor permeability of the sinter bed, high return ratio, high solid fuel consumption and process energy consumption caused by TISCO taking the predominance of ultra-fine concentrate powder as the raw material for sintering, TISCO has conducted a series of research and practice on low-carbon and low-emission technologies, which mainly include the front homogenization stacking technology of fine-grained fuel, powerful mixing sintering technology, hot-air oxygen-enriched sintering technology, "activated carbon + low-temperature SCR" flue gas purification technology, micro-negative ignition gas-solid separation technology, low emission and high-efficiency waste heat recovery technology of the ring cooler. Therefore, the solid fuel consumption has been reduced from over 45 kg/t to less than 41 kg/t, the energy consumption of the process has been reduced from 42 kgce/t to 35 kgce/t, and the environmental protection index of the whole system of sintering has reached the national standard of Class A enterprise. Its related technologies are highlighted in order to provide reference for peers.