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上钢一厂为提高高炉利用系数,曾采用煤+油150公斤/吨铁的大喷吹量配合下的富氧操作,取得了较好的效果。但自1980年起,由于能源紧张,高炉停止使用重油,这样,原来喷油时油在风口区分解所消耗的热量不需要了,如再保持原来喷油时的富氧量,此时风口区理论燃烧温度高出适宜理论燃烧温度120℃左右,超出了高炉在当时条件下所能接受的极限值。为保证高炉料顺行,只有把氧量大幅度降下来,富氧率由过去的3%降低到0.3%左右。而富氧率降低后,影响高炉产量6%左右。现经改进采用空气加湿鼓风配合富氧操
In order to improve the utilization factor of the blast furnace, the First Steel Plant has achieved good results by using the oxygen-rich operation with the large injection amount of 150 kg / ton of iron of coal + oil. However, since 1980, because of energy shortage, the blast furnace stopped using heavy oil. In this way, the original oil consumed in the tuyere area is not required for the fuel to be consumed. For example, to maintain the oxygen-rich content of the original fuel injection, Theoretical combustion temperature higher than the appropriate theoretical combustion temperature of about 120 ℃, beyond the limits of the blast furnace can accept the conditions at that time. In order to ensure the smooth blast furnace material, only a substantial reduction in oxygen, oxygen rate from the past 3% to 0.3% or so. The oxygen-rich rate is reduced, affecting about 6% of blast furnace production. Improved air humidification is now used with oxygen-enriched aerobics