铁水预处理与纯净钢冶炼(一)

HOT METAL PRETREATMENT AND PURE STEEL MAKING PROCESSES

铁水预处理特别是铁水三脱处理技术自获得工业化应用以来,已成为纯净钢冶炼必不可少的最经济工序。综述了国内外铁水深度预处理以及转炉生产纯净钢冶炼工艺的发展现状和部分工业规模生产的操作结果,论述了铁水预处理对纯净钢生产的意义,分析了冶炼纯净钢的铁水深度预处理技术。认为在目前我国调整钢铁产业结构、开发品种、提高质量的关键时期,大力发展和推广铁水深度预处理技术,辅以钢水炉外精炼,必将为钢铁企业扩大纯净钢种冶炼、改善质量、降低成本、提高产品竞争力和附加值发挥巨大作用,带来显著经济效益。

Hot metal pretreatment, especial desiliconization, dephosphorization and desulfurization, has increasingly become an economic and essential process in pure steel making. The development status and tendencies of the pure steel making processes based on hot metal deep pretreatment and its partially commercial operation results at home and abroad were overviewed. The advantages of the pure steel making based on hot metal pretreatment and the deep (treatment technologies of hot metal desiliconization, dephosphorization and desulfurization were analyzed. Today, applications of hot metal deep dephosphorization and desulfurization processes plus molten steel refining to our iron and steel production will be certain to play a significant role in the aspects of pure steel grade making, decrease of production costs, improvement of steel qualities and grades, and enhancement of steel product market competition.