一、前言碱性平炉炉顶的局部剥片或断落,乃是炉顶损毁的主要因素。多年来,为了延长炉顶寿命,我们曾对平炉顶进行了大量的使用观察和损毁机理的研究。观察和研究的结果表明,碱性平炉顶砖剥片断落的根本原因,在于炉顶砖热端存在着巨大的结构应力。它来源于拱顶的原始结构和炉顶砖的热膨胀。因此,设法减少或消除炉顶砖热端的结构应力,或提高炉顶砖 First, the foreword Local flat hearth top of the local stripping or broken off, but the main roof damage. Over the years, in order to extend the roof life, we have carried out a large number of flat roof observation and use of damage mechanism of research. The results of observation and research show that the basic reason for the peeling of alkaline flat top brick is that there is huge structural stress on the hot side of the top brick. It comes from the original structure of the vault and the thermal expansion of the roof tile. Therefore, efforts have been made to reduce or eliminate the structural stresses on the hot ends of the roof tiles or to raise the roof tiles