顾宇,郭磊,郭占成

• 1:北京科技大学绿色低碳钢铁冶金全国重点实验室

摘要(Abstract)：

铁水中析出的片状石墨是一种可持续利用的资源。在一定的温度范围内，采用降温的方式可以从铁水中析出大量石墨并加以回收利用，我国的生铁产量巨大，因此，这种从铁水中回收石墨的方法具有广阔的应用前景。本研究对硫含量不同的铁水进行降温，并采用扫描电子显微镜（SEM）、X射线衍射仪（XRD）、拉曼光谱仪（Raman）等表征手段，研究了硫含量对铁水中片状石墨析出行为的影响。结果表明，随着硫含量增加，铁中的锰与硫结合生成大量的MnS，铁中析出的石墨倾向于在MnS异质晶核上生长，石墨由片状向碎块状转变，结晶度逐渐降低，石墨的表面缺陷增多。因此，低硫含量的铁水通过降温可以析出结晶度较好的片状石墨，并据此提出了一种新的炼铁流程石墨生产工艺，为实现铁水析出石墨工业化提供理论参考。

关键词(KeyWords)： 铁水;石墨析出;硫含量;资源回收

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 顾宇,郭磊,郭占成

DOI: 10.19864/j.cnki.jxye.2024.02.009

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