“双碳”背景下高炉使用高比例球团的展望

碳达峰和碳中和是我国承担解决气候问题的大国责任，推动生态文明建设和高质量发展的重要举措。高的碳排放是限制钢铁行业实现“双碳”目标的关键因素。为了达到低碳发展目标，一方面进行突破性的低碳冶金工艺的开发和应用，或拥有足够的优质废钢资源供给；另一方面，充分发挥现有高炉流程成熟、高效、优质、低成本等特点，结合铁矿资源条件，充分利用球团矿优良的冶金性能、生产过程低能耗和低排放等优势，开发高炉使用高比例球团的炉料结构和相关操作制度，实现全系统最佳的能源消耗和碳排放水平，提高现有流程的综合竞争力。高炉使用高比例球团的相关技术研究、开发和应用在国内外都已取得显著进展，我国在部分企业具备一定的资源优势条件，开展了大量前期研究和生产实践，未来的发展将为我国钢铁行业实现低碳目标产生积极效应。要点：(1)钢铁行业碳排放占世界碳排放总量的比例较大，尤其我国是钢铁大国，行业低碳发展意义重大。(2)钢铁生产过程中，铁前系统的能耗和碳排放占据主导地位，而球团矿生产的能耗、有害气体排放和碳排放等指标大大优于烧结矿生产。(3)国内外高炉使用高比例球团的技术趋于成熟，充分利用球团矿优良的冶金性能，优化高炉系统和操作制度，是...

Prospect on high ratio pellet utilized in blast furnace under the background of carbon peaking and carbon neutrality

Carbon peaking and carbon neutrality are important measures taken by China to shoulder its responsibility as a major country in addressing climate issues and promote ecological progress and high-quality development. High carbon emissions are a key factor limiting the steel industry's ability to achieve carbon peaking and carbon neutrality goals. In order to achieve the goal of low-carbon development, on the one hand, breakthrough low-carbon metallurgical processes should be developed and applied, or enough high-quality scrap resources be supplied. On the other hand, the merits of existing blast furnace process, i.e., mature, high efficiency, high quality and low cost, etc., will be brought to full play to. And combining with the condition of iron ore resources, making full use of pellets' excellent metallurgical performance, low energy consumption and low emissions advantages of the production, developing blast furnace optimized burden structure and the related operation system by using high percentage of pellets, the best energy consumption and carbon emissions in the system level will be achieved. The overall competitiveness of existing processes will be improved. Significant progresses have been made in the research, development and application of technologies related to the use of high proportion of pellets in blast furnace at home and abroad. In China, some enterprises have certain resource advantages, and a large number of preliminary studies have been carried out. The future development will have a positive effect on China's steel industry to achieve the goal of low carbon emission.