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Analysis of the Wear mechanism of MgO-C Slag Line Bricks for Steel Ladles and Formulation of friendly Slag for enhancing Steel Ladle Life at Rourkela Steel Plant

机译:钢材钢材砖砖磨损机理分析及友好炉渣配方,加强罗克拉钢铁厂

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摘要

The main wear mechanism of the refractory ladle slag line are chemical corrosion and mechanical erosion due to stirring of the steel bath. The chemical potential difference between the refractory and the slag under high temperature conditions is the driving force for the chemical weaf mechanism.The objective of this work was to analyse the wear mechanism of MgO-C brick at the steel ladle slag line.An investigation was done through optical and electronics microscopy (SEM) and EDS analysis. By using these techniques glaze characteristics and the slag- refractory interactions were determined. Also, micro structural changes in the bricks were evaluated.The identified attack mechanisms were: graphite oxidation, slag penetration into the matrix and around the MgO grains, magnesia-wustite formation, loosening of MgO grains and finally dissolution of MgO grains into the slag.
机译:由于钢浴搅拌,耐火材料钢包渣线的主要磨损机构是化学腐蚀和机械侵蚀。 在高温条件下,耐火材料和炉渣之间的化学势差是化学卫生机构的驱动力。这项工作的目的是分析钢钢包渣线的MgO-C砖的磨损机制。调查是 通过光学和电子学显微镜(SEM)和EDS分析完成。 通过使用这些技术,确定釉质特性和渣霉菌相互作用。 此外,评估了砖的微结构变化。确定的攻击机制是:石墨氧化,炉渣渗透到基质中,并围绕MgO颗粒,氧化镁 - 摩尔特形成,MgO颗粒松开,最终将MgO颗粒溶解到炉渣中。

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  • 来源
    《IIM Metal News》 |2018年第3期|共13页
  • 作者

    R.B. Gupta;

  • 作者单位

    Refractories Rourkela Steel Plant SAIL;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 冶金工业;
  • 关键词

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