在现代烧结生产中,生产所耗的热量,近三分之一在烧结矿冷却过程中随废气排入了大气。回收并利用这一部分废热,对于进一步降低烧结工序能耗具有现实意义。由于冷却过程中所产生的热废气实质上就是被预热到一定温度的热空气[表1],可直接用于助燃点火。据日本若松厂和室兰6号机资料报导,如果用300℃温度的热空 In modern sintering production, nearly one-third of the heat consumed in production is discharged into the atmosphere with the flue gas during the cooling of the sinter. Recycling and utilization of this part of the waste heat is of practical significance for further reducing the energy consumption of the sintering process. As the hot exhaust gas generated during cooling is essentially hot air preheated to a certain temperature [Table 1], it can be directly used for combustion ignition. According to Japan’s Wakamatsu plant and Muroran 6 machine data reported that if the temperature of 300 ℃ with hot air