Discussion on high blast temperature of blast furnace

Changes of blast temperature of blast furnaces year by year in the key steelworks of China,as well as a progress of high blast temperature practice in Shougang in recent years are introduced in this paper.In addition,annual blast temperature of blast furnaces in Shougang's different plants are analyzed in detail.Among them,No.2 BF in Qiangang region is a good example of blast temperature technology progress in Shougang,which has reached a monthly blast temperature above 1 250 ℃.Problems related to high blast temperature,such as technologies,facilities,refractory materials,fuel and raw materials,as well as blast furnace operation,are discussed.High blast temperature is an integrated technology matched with large coal injection and oxygen enrichment together.Only in these conditions,the energy-saving function of high blast temperature can be achieved.