本课题针对“多目标优化的清洁低碳综合炼铁技术”进行研究，主要围绕炼铁流程高炉使用大比例球团冶炼开展工作，在新建的 5500m3 高炉高比例球团应用示范工程上实现入炉球团比例提高到 50%以上。球团工序比烧结工序能耗低、污染物排放少，且球团品位高，可大幅降低渣量，可支撑项目的吨铁能耗降低5kgce以上、吨钢气体污染物排放比2015年降低 20%以上。

This subject is aimed at "multi-objective optimized clean and low-carbon integrated ironmaking technology". It mainly focuses on the use of large-scale pellet smelting in the blast furnace of the ironmaking process. The new 5500m3 blast furnace high-proportion pellet application demonstration project is realized in the furnace The proportion of pellets is increased to more than 50%. Compared with the sintering process, the pelletizing process has lower energy consumption and lower pollutant emissions, and the pellets are of high grade, which can greatly reduce the amount of slag, which can support the project to reduce the energy consumption per ton of iron by more than 5 kgce, and the emission of gas pollutants per ton of steel is reduced by 20% compared with 2015.