宝钢用后废弃MgO-C砖的再生利用

Recycling Used MgO-C Bricks at Baosteel

随着世界环保、循环经济的发展,我国加大对用后废弃耐火材料开发利用的力度。文章概述了国内外用后耐材的基本状况,详细介绍了宝钢废耐材资源的情况,并对用后废弃转炉钢包镁碳砖进行了深入的研究开发,同时还探讨了其它几类废耐材的利用方法。开发成功的优质再生镁碳砖,试验研究发现无论在使用中的表现和使用寿命还是用后残厚均与目前使用的镁碳砖无差别,其使用性能已达到目前宝钢炼钢厂正常使用镁碳砖的水平,能满足多种精炼工况条件下大型钢包的要求。在宝钢300 t钢包渣线上的使用取得了良好效果。

With the advancement of the worldwide environmental protection and recycling economy, China has strengthened its development and utilization of used refractory materials. A bird＇ s-eye account of refractory material development both at home and broad and a detailed illustration of the situation in Baosteel have been made. Further research and development of MgO-C bricks from the LD ladle has been carried out and utilizations of used refractory materials have been explored. Regenerated quality MgO-C bricks have been successfully developed which prove no difference to the current MgO-C bricks in terms of performance,life span and residual thickness as is shown in the resuits of the research. In particular, they parallel the performance of the MgO-C bricks commonly used in Baosteel Steelmaking Plant ,and can meet the requirements of large ladle under various refining conditions. Satisfactory results of the application in the 300 t ladle slag line in Baoteel have been obtained.