徐钢高炉炉壳开裂的主要原因是由于碱金属使砖中的莫来石变为钾霞石产生体膨所致;砖衬的抗碱能力与其密度和气孔度有密切的关系;炉底砖衬的碱富集带与910℃等温线基本一致。同时发现,通过特殊处理的砖衬其抗碱力显著提高。 Xu steel blast furnace shell cracking is mainly due to alkali metal so that the brick into the kapok nepheline produce body swelling caused by; brick lining of the alkali resistance and density and porosity are closely related; bottom brick Lining alkali enrichment zone and 910 ℃ isotherm basically the same. At the same time, it was found that the anti-alkali strength of bricks treated with special treatment increased significantly.