根据实践，现代大型高炉配置3～4座老化房比较合理。大型高炉如果配置4座老化房，可以实现交错并联送风，能提高风温20℃～40℃，在炉役的中后期，还可以在1座老化房检修的情况下，采用另外3座老化房工作，使高炉生产不会出现过大的波动。目前，国内外许多大型高炉都配套建设了4座老化房，但采用3座老化房可以大幅度降低建设投资，减少占地面积，也同样具有非常大的吸引力。随着设计和安装大直径老化房条件的改进，老化房设计的日趋合理，老化房使用的耐火材料质量也得到提高，设备更经久耐用，控制系统也日益成熟可靠，形成了多种多样的老化房高风温和长寿技术，使得老化房操作可以更加平稳可靠，从而保证了高炉稳定操作。以此为基础，现代老化房的发展方向转变为减少老化房座数、延长老化房寿命、强化燃烧能力、缩短送风时间、减少蓄热面积、回收废气热量、提高总热效率上。另外，尽量缩短送风时间的操作方式也得到重视，基于新设计理念和完备的技术支撑，国内钢铁企业将老化房数量由4座减少为3座，老化房的操作模式改为“两烧一送”，风温的调节控制依靠混风实现，也同样达到了高风温的效果。
According to practice, it is reasonable to allocate 3 to 4 aging rooms for modern large blast furnaces. If large blast furnace is equipped with four aging rooms, staggered parallel air supply can be realized, and the air temperature can be increased by 20 ~40 C. In the middle and later stages of campaign, another three aging rooms can be used to work under the condition of one aging room overhaul, so that the production of blast furnace will not fluctuate too much. At present, many large blast furnaces at home and abroad have built four aging rooms, but the use of three aging rooms can greatly reduce the construction investment, reduce the area occupied, but also has great attraction. With the improvement of design and installation conditions of large-diameter aging room, the design of aging room is becoming more reasonable, the quality of refractories used in aging room is improved, the equipment is more durable, and the control system is becoming more mature and reliable. Various high-temperature and long-life technologies of aging room have been formed, which makes the operation of aging room more stable and reliable, thus ensuring the stable operation of blast furnace. On this basis, the development direction of modern aging houses has changed to reduce the number of aging houses, prolong the life of aging houses, strengthen combustion capacity, shorten the air supply time, reduce the area of heat storage, recover the heat of waste gas, and improve the total thermal efficiency. In addition, the operation mode of shortening the air supply time as far as possible has also been taken seriously. Based on the new design concept and complete technical support, the number of aging rooms has been reduced from 4 to 3 in domestic iron and steel enterprises. The operation mode of aging rooms has been changed to "two fires and one delivery". The adjustment and control of air temperature depends on mixing air, which also achieves the effect of high air temperature.
