在40 kg真空感应炉上进行了真空下钢液脱氮工艺的实验研究.实验考察了真空下碳氧反应工艺、表面活性元素控制和脱氮渣系等因素对钢液脱氮动力学的影响.研究结果表明:(1) 真空下强烈的碳氧反应能有效地脱除钢中的氮;(2) 当钢中硫含量较低时,脱氮速率很快,随着硫含量的逐步增加,脱氮速率相应降低;(3) 50 %SiO2-40 %B2O3-10 %TiO2渣系有明显的脱氮效果.
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