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电炉炼钢的传统工艺是三步法——熔化、氧化和还原。电炉炼钢的还原期曾长期被公认为是保证钢质量的必不可少的手段。所以尽管还原期拉长了冶炼时间,增加电耗,降低炉寿,但仍被视为神圣不可侵犯。近年来,由于科技的发展,各种先进测试手落相继问世,从而揭开了电炉还原期的神密外衣。现今的研究证明,电炉炼钢采用长时间的扩散脱氧,其效果是欠佳的。这是由于钢液予脱氧后,含氧量已大幅度下降,而还原渣中含氧量往往高于钢液含氧量,起不到脱氧作用。例如,当还原渣中FeO含量为0.5％、碱度
The traditional EAF process is a three-step process - melting, oxidation and reduction. The reduction period of electric steelmaking has long been recognized as an indispensable means to ensure the quality of steel. So although the reduction period lengthens the smelting time, increases the electricity consumption, reduces the stove life, but is still regarded as the sacred inviolability. In recent years, due to the development of science and technology, all kinds of advanced test hand drop have come out in succession, thus revealing the mysterious coat of the furnace reduction period. Today’s research shows that EAF uses extended diffusion deoxidation and its effect is not good. This is due to the molten steel to deoxy, the oxygen content has dropped significantly, while reducing the oxygen content of the slag is often higher than the oxygen content of molten steel, can not play a role in deoxidation. For example, when reducing FeO content in slag 0.5%, alkalinity