As the furnace campaign increases, the damage frequency and aglow phenomena of furnace shell became more, which seem to influence the long campaign of the blast furnace.

• 通过高炉大修和高炉冷却系统的在线改造，增加炉体冷却板、冷却壁的冷却水量，提高水压，改善循环水水质，强化对炉体的冷却，起到了良好效果。