中国高炉炼铁技术装备发展成就与展望

 近40年来，我国钢铁工业取得了巨大进步，钢铁产量连续多年居世界第一。我国高炉炼铁技术装备在大型化、现代化、高效化、长寿化等方面发展成就显著。2000年以来，一批5000m3以上特大型高炉、500m2以上大型烧结机、7.63m超大容积焦炉和年产400万t/a以上大型球团生产线相继建成投产，一系列自主研发、集成创新的炼铁关键技术在生产实践中取得重大应用成效。在技术装备大型化的同时，高炉富氧喷煤、无料钟炉顶、煤气干法除尘、顶燃式热风炉及高风温、高效低耗烧结技术、大型清洁炼焦技术等先进技术及其装备研发与应用成效显著，有力推动了炼铁技术装备进步。到本世纪中叶，我国钢铁工业格局和流程结构将发生重大变革，减量化、绿色化、智能化、高效化将是未来一个时期炼铁技术装备的主要发展趋势。

Prospect and Development Achievements of Blast Furnace Ironmaking Technologies and Equipments in China

In the past 40 years, Chinese iron and steel industry has made great progress, the crude steel production output has ranked first in the world for many years. Chinese blast furnace ironmaking technological equipments have achieved outstanding achievements in large-scale, modernization, high-efficiency, long service life and so on. Since 2000, a batch of super large blast furnaces above 5000m3, large sintering machines above 500m2, large volume coke ovens with battery height 7.0 m and large pelletizing production lines with an annual output of 4 million t/a have been built and put into commissioning in succession, and a series of the key technologies of integrated innovation and independent research have been achieved great achievements in production practice. At the same time of the technical equipments large sizing, a lots of advanced technologies and equipments research and application have been achieved remarkable results, such as blast oxygen enrichment and pulverized coal injection, bell-less top equipment, BF gas dry dust removal, dome combustion hot blast stove and high blast temperature technology, high efficiency and low consumption sintering technology, large scale clean coking technology, and so on. These achievements promote the progress of ironmaking technologies and equipments. Up to the middle of this century, great changes will take place in the situation and steel manufacturing process structure of China’s iron and steel industry. Reduction, greennization, intelligentization and high efficiency will be the main development tendency of ironmaking technology and equipment in the coming period.