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针对上钢化铁炼钢的状况，详述了COREX－MIDREX煤基炼铁工艺和链篦机-回转窑氧化球团的生产工艺、工艺参数、特点、技术经济指标等，认为建设上述工艺为基础的炼铁工序对改造和优化上钢工艺结构具重要意义。
Aiming at the condition of steelmaking steelmaking, the COREX-MIDREX coal-based ironmaking process and the production process, process parameters, characteristics, technical and economic indexes of grate-rotary kiln oxidation pellets are described in detail. It is considered that the above process is the foundation Ironmaking process on the transformation and optimization of steel structure is of great significance.