传统的炼铁工艺是在高炉内生成还原煤气,熔化直接还原铁和使铁矿石还原。这两个操作过程在高炉内同时进行,要求使用优质焦炭,保证通过炉料的气流不受干扰。由西德科夫公司和奥钢联共同开发的KR炼铁法基于将高炉内操作过程分开的设想,采用两套独立的反应装置,由溶化气化器通过煤的氧化产生还原煤气,同时溶化还原过的固态铁;由矿石还原炉将固态铁送入溶化气化器。KR法可以使用低品位的煤生产铁水,投资省。即使在年产10万t的低生产率条件下,也可生产出成本低廉的铁水。产生的可燃气体和 The traditional smelting process is the production of reducing gas in a blast furnace to melt the direct reduced iron and reduce the iron ore. Both operations are carried out simultaneously in the blast furnace, requiring the use of high quality coke to ensure unobstructed airflow through the charge. KR Ironmaking, developed jointly by Sidcov and VAI, based on the idea of ​​separating the operations in the blast furnace, uses two separate reaction units, from which a reducing gas is produced by the oxidation of coal in a melting gasifier, Reduced solid iron; by the ore reduction furnace solid iron into the melting gasifier. KR method can use low-grade coal production of hot metal, investment province. Even at low productivity with an annual output of 100,000 t, low-cost hot metal can be produced. The resulting combustible gas and