现代炼铁工艺及低碳发展方向分析

分析了现代高炉炼铁和非高炉炼铁(直接还原、熔融还原)工艺特点和发展现状,从多个方面比较现有生产条件下各工艺的优缺点。从能源结构、生产规模及工艺成熟度阐述高炉炼铁在当前仍是国内主流工艺,并结合当前国内外低碳发展趋势和政策要求,提出高炉工艺降低碳耗的措施,明确了以“短流程”替代“长流程”和以新能源替代碳素冶金的发展方向,以最终实现“零碳炼铁”。结合现有的国际上的能源结构调整方向,指出了氢冶金的发展方向。

Analysis of modern ironmaking technology and low-carbon development direction

The process characteristics and development status of modern blast furnace ironmaking and non-blast furnace ironmaking (direct reduction, smelting reduction) are analyzed, and the advantages and disadvantages of each process under existing production conditions are compared from many aspects. From the energy structure, production scale and process maturity, it is expounded that blast furnace ironmaking is still the main process in China. Combined with the current trend of low carbon development at home and abroad and the policy requirements, the measures to reduce carbon consumption of blast furnace process are put forward. At the same time, the development direction of "short process" instead of "long process" and new energy instead of carbon metallurgy was clarified, so as to realize "zero carbon ironmaking" finally. The development direction of hydrogen metallurgy is pointed out according to the current international energy structure adjustment direction.