The results have shown that the concentrated stress area exist in the lining of the hearth and bottom with different firebrick which should be one of the reason eroded the hearth and bottom of the blast furnace.

• 计算结果表明：在用具有不同的导热性能和力学性能的耐火材料砌筑的炉缸内存在著应力集中现象，这是导致高炉炉缸破损的主要原因之一。