本文是对重钢四高炉热风管道系统为实例,以寻求节能的途径,找出现有管道系统的热损失及影响焦比的数量;提出下一步大中修彻底改造的有效措施可节约的焦比量;在目前不具备条件改造时,在管外采用硅酸铝耐火纤维进行包扎,并探讨它的可能性及节焦的途径等。作者还对50～60年代修建投产的中小型高炉提出在大中修改造及当前节能的意见,以供参考。 This article is a case study of the hot blast pipe system in Chongqing Iron and Steel Co., Ltd. to find ways to save energy, to find out the heat loss of the existing pipeline system and the number of coke ratio; Proposed next step large and medium-sized renovation of the effective measures can save the coke ratio Volume; in the current do not have the conditions of transformation, outside the tube with aluminosilicate refractory fiber dressing, and explore its possibilities and focus coke route. The author also put forward suggestions on large and medium-sized renovation and current energy conservation for small and medium-sized blast furnaces put into operation in the 1950s and 1960s for reference.